kth.sePublications
Change search
Link to record
Permanent link

Direct link
Alternative names
Publications (10 of 67) Show all publications
Tian, W., Kang, M., Shakya, J., Li, Q., Sui, X., Liu, M., . . . Hamedi, M. (2025). Liquid-phase exfoliation of 2D transition metal dichalcogenide nanosheets in water. Chemical Engineering Journal, 513, Article ID 162587.
Open this publication in new window or tab >>Liquid-phase exfoliation of 2D transition metal dichalcogenide nanosheets in water
Show others...
2025 (English)In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 513, article id 162587Article in journal (Refereed) Published
Abstract [en]

Liquid-phase exfoliation of 2D transition metal dichalcogenides (TMDs) nanosheets in water is critical for their practical applications towards advanced thin-film electronics and ionotronics. We here report a versatile strategy for liquid-phase exfoliation of clay-like water-swollen TMD multilayers into delaminated 2D TMD nanosheets (including MoS2, WS2, MoSe2, etc.) with thin thicknesses of < 2 nm (e.g., 1.4 nm of MoS2) and high nanosheet concentrations. The delaminated TMD nanosheets can form stable colloidal dispersions in water with low Zeta potentials of <–32 mV over a month, and undergo phase transformation upon annealing from metallic 1 T phase to semiconducting 2H phase. These nanosheets can be coated on various circuit substrates as thin-film ionotronics; for example, an ionotronic device with an as-delaminated MoS2 channel achieves a high transconductance of 23 µS at a low operating voltage of −0.2 V. The delaminated TMDs dispersions are capable of co-dispersing other nanomaterials including 2D MXene and graphene, and 1D carbon nanotube and cellulose nanofibrils, forming stable colloidal co-dispersions in water offering a platform to fabricate multifunctional TMD-based nanocomposite films with high electromechanical integrity. Examples of MoS2/MXene films show an electronic conductivity of 1.66 × 105 S m−1 and a tensile strength of 70 MPa, higher than pure MoS2 films of 1.08 × 104 S m−1 and 55 MPa, and MoS2/CNF films with a higher tensile strength of 178 MPa and their hydrogel films presenting a mixed electronic/ionic conductivity of 18.2/0.16 S m−1. These outcomes promise potentially scalable applications in neuromorphic ionotronics, flexible electronics, energy storage, etc.

Place, publisher, year, edition, pages
Elsevier BV, 2025
Keywords
Ionotronics, nanocomposite films, Liquid-phase exfoliation, Nanosheets, Transition metal dichalcogenides
National Category
Materials Chemistry Condensed Matter Physics
Identifiers
urn:nbn:se:kth:diva-363098 (URN)10.1016/j.cej.2025.162587 (DOI)001479644900001 ()2-s2.0-105002891897 (Scopus ID)
Note

QC 20250609

Available from: 2025-05-06 Created: 2025-05-06 Last updated: 2025-06-09Bibliographically approved
Benselfelt, T., Reid, M. S., Edberg, J., Belaineh, D., Fager, C., Subramaniyam, C. M., . . . Wågberg, L. (2025). Membranes and separators from cellulose fibrils of different degrees of refining. Journal of Environmental Chemical Engineering, 13(2), Article ID 115766.
Open this publication in new window or tab >>Membranes and separators from cellulose fibrils of different degrees of refining
Show others...
2025 (English)In: Journal of Environmental Chemical Engineering, E-ISSN 2213-3437, Vol. 13, no 2, article id 115766Article in journal (Refereed) Published
Abstract [en]

Membranes and separators are crucial components in many processes and devices. The state-of-the-art fossil-based membranes have a high carbon footprint, and polyfluorinated membranes are increasingly phased out. These limitations lead to an inevitable transition that calls for carbon-neutral membranes with the same or even better performance that can be produced at scale and low cost. Cellulose membranes have the potential to fulfill these criteria if they can be tuned for different purposes. A way to tailor cellulose membranes by preparing them from cellulose fibrils of different refining degrees is presented. The membranes’ effective pore size and permeability to PEG, Fluorescein, and different ions were characterized. The membranes were efficiently used as separators in aqueous-based Zn-ion batteries and PEDOT supercapacitors. This work demonstrates a route toward high-performing and versatile cellulose membranes that can be produced at scale in a more sustainable membrane industry.

Place, publisher, year, edition, pages
Elsevier BV, 2025
Keywords
Batteries, Cellulose, Fibrils, Membranes, Supercapacitors
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-360575 (URN)10.1016/j.jece.2025.115766 (DOI)001428726400001 ()2-s2.0-85217783398 (Scopus ID)
Note

QC 20250311

Available from: 2025-02-26 Created: 2025-02-26 Last updated: 2025-03-11Bibliographically approved
Askari, S., Hamedi, M. M. & Sevastyanova, O. (2025). Polycarboxylic polyester binders from renewable feedstock for high-performance battery electrodes. Journal of Energy Storage, 115, Article ID 115838.
Open this publication in new window or tab >>Polycarboxylic polyester binders from renewable feedstock for high-performance battery electrodes
2025 (English)In: Journal of Energy Storage, ISSN 2352-152X, E-ISSN 2352-1538, Vol. 115, article id 115838Article in journal (Refereed) Published
Abstract [en]

Polymer binder selection greatly impacts electrode performance, production, and recyclability in batteries and energy storage systems. We introduce a novel family of polymer binders that provide several key advantages over traditional binders in Li-ion batteries. Our findings show that in-situ cross-linked networks of eco-friendly polyesters bearing pendant carboxylic moieties can serve as superior binders for electrodes. When tested specifically in high‑silicon-content anodes, the electrodes exhibit high initial coulombic efficiency and sustain impressive specific capacity retention after 300 cycles. They reach approximately 2500 mAh/g, compared to 1580 mAh/g for electrodes using conventional PAA binders. Furthermore, the anode shows stable cycling performance when paired with NMC532 cathodes in full Li-ion cell tests. Notably, the transition of silicon from intermediate phases to its fully lithiated state is more efficient with the polyester binder, attributed to the formation of a more stable solid-electrolyte interphase (SEI) layer and reduced impedance. We assign the high performance of our binder to the presence of the polar groups, e.g. carbonyl, in the primary polymer chain, along with the end functional moieties, promoting Li+ solvation and transport, resulting in a high ionic conductivity of the binder. Moreover, the inherent flexibility in the formulations of the polyesters enables fine-tuning of properties such as adhesion, elasticity, and a suitable glass transition temperature, all of which could be customized to optimize battery performance. Produced from renewable feedstocks and adopting water-based or solvent-free fabrication processes, these polyesters offer a fully sustainable solution from production to recycling at the end of the battery's life.

Place, publisher, year, edition, pages
Elsevier BV, 2025
Keywords
Li-ion battery, Polymer binder, Renewable polyester, Silicon anode
National Category
Materials Chemistry Polymer Chemistry Polymer Technologies
Identifiers
urn:nbn:se:kth:diva-360891 (URN)10.1016/j.est.2025.115838 (DOI)001436635300001 ()2-s2.0-85218458156 (Scopus ID)
Note

QC 20250317

Available from: 2025-03-05 Created: 2025-03-05 Last updated: 2025-03-17Bibliographically approved
Liu, M., Zhang, L., Rostami, J., Zhang, T., Matthews, K., Chen, S., . . . Gogotsi, Y. (2025). Tough MXene-Cellulose Nanofibril Ionotronic Dual-Network Hydrogel Films for Stable Zinc Anodes. ACS Nano, 19(13), 13399-13413
Open this publication in new window or tab >>Tough MXene-Cellulose Nanofibril Ionotronic Dual-Network Hydrogel Films for Stable Zinc Anodes
Show others...
2025 (English)In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 19, no 13, p. 13399-13413Article in journal (Refereed) Published
Abstract [en]

Developing ionotronic interface layers for zinc anodes with superior mechanical integrity is one of the efficient strategies to suppress the growth of zinc dendrites in favor of the cycling stability of aqueous zinc-ion batteries (AZIBs). Herein, we assembled robust 2D MXene-based hydrogel films cross-linked by 1D cellulose nanofibril (CNF) dual networks, acting as interface layers to stabilize Zn anodes. The MXene-CNF hydrogel films integrated multifunctionalities, including a high in-plane toughness of 18.39 MJ m-3, high in-plane/out-of-plane elastic modulus of 0.85 and 3.65 GPa, mixed electronic/ionic (ionotronic) conductivity of 1.53 S cm-1 and 0.52 mS cm-1, and high zincophilicity with a high binding energy (1.33 eV) and low migration energy barrier (0.24 eV) for Zn2+. These integrated multifunctionalities, endowed with coupled multifield effects, including strong stress confinement and uniform ionic/electronic field distributions on Zn anodes, effectively suppressed dendrite growth, as proven by experiments and simulations. An example of the MXene-CNF|Zn showed a reduced nucleation overpotential of 19 mV, an extended cycling life of over 2700 h in Zn||Zn cells, and a high capacity of 323 mAh g-1 in Zn||MnO2 cells, compared with bare Zn. This work offers an approach for exploring mechanically robust 1D/2D ionotronic hydrogel interface layers to stabilize the Zn anodes of AZIBs.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2025
Keywords
cellulose nanofibrils, interface layers, Ionotronic hydrogel, MXene, zinc anodes
National Category
Materials Chemistry Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-362728 (URN)10.1021/acsnano.5c01497 (DOI)001451671200001 ()40130552 (PubMedID)2-s2.0-105002485153 (Scopus ID)
Note

QC 20250425

Available from: 2025-04-23 Created: 2025-04-23 Last updated: 2025-04-25Bibliographically approved
Enrico, A., Buchmann, S., De Ferrari, F., Lin, Y., Wang, Y., Yue, W., . . . Zeglio, E. (2024). Cleanroom‐Free Direct Laser Micropatterning of Polymers for Organic Electrochemical Transistors in Logic Circuits and Glucose Biosensors. Advanced Science, 11(27)
Open this publication in new window or tab >>Cleanroom‐Free Direct Laser Micropatterning of Polymers for Organic Electrochemical Transistors in Logic Circuits and Glucose Biosensors
Show others...
2024 (English)In: Advanced Science, E-ISSN 2198-3844, Vol. 11, no 27Article in journal (Refereed) Published
Abstract [en]

Organic electrochemical transistors (OECTs) are promising devices for bioelectronics, such as biosensors. However, current cleanroom-based microfabrication of OECTs hinders fast prototyping and widespread adoption of this technology for low-volume, low-cost applications. To address this limitation, a versatile and scalable approach for ultrafast laser microfabrication of OECTs is herein reported, where a femtosecond laser to pattern insulating polymers (such as parylene C or polyimide) is first used, exposing the underlying metal electrodes serving as transistor terminals (source, drain, or gate). After the first patterning step, conducting polymers, such as poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), or semiconducting polymers, are spin-coated on the device surface. Another femtosecond laser patterning step subsequently defines the active polymer area contributing to the OECT performance by disconnecting the channel and gate from the surrounding spin-coated film. The effective OECT width can be defined with high resolution (down to 2 µm) in less than a second of exposure. Micropatterning the OECT channel area significantly improved the transistor switching performance in the case of PEDOT:PSS-based transistors, speeding up the devices by two orders of magnitude. The utility of this OECT manufacturing approach is demonstrated by fabricating complementary logic (inverters) and glucose biosensors, thereby showing its potential to accelerate OECT research.

Place, publisher, year, edition, pages
Wiley, 2024
Keywords
conjugated polymer, direct writing, organic electrochemical transistor, poly(3, 4-ethylenedioxythiophene) polystyrene sulfonate, ultrashort pulsed lasers
National Category
Organic Chemistry Other Electrical Engineering, Electronic Engineering, Information Engineering Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-342521 (URN)10.1002/advs.202307042 (DOI)001142422700001 ()38225700 (PubMedID)2-s2.0-85182492139 (Scopus ID)
Funder
Swedish Research Council, 2018‐03483Swedish Research Council, 2022‐04060Swedish Research Council, 2022‐02855Knut and Alice Wallenberg Foundation, 2015.0178Knut and Alice Wallenberg Foundation, 2020.0206Knut and Alice Wallenberg Foundation, 2021.0312Swedish Research Council, 2022-00374
Note

QC 20240123

Available from: 2024-01-23 Created: 2024-01-23 Last updated: 2025-02-18Bibliographically approved
Buchmann, S., Stoop, P., Roekevisch, K., Jain, S., Kroon, R., Müller, C., . . . Herland, A. (2024). In Situ Functionalization of Polar Polythiophene-Based Organic Electrochemical Transistor to Interface In Vitro Models. ACS Applied Materials and Interfaces, 16(40), 54292-54303
Open this publication in new window or tab >>In Situ Functionalization of Polar Polythiophene-Based Organic Electrochemical Transistor to Interface In Vitro Models
Show others...
2024 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 16, no 40, p. 54292-54303Article in journal (Refereed) Published
Abstract [en]

Organic mixed ionic-electronic conductors are promising materials for interfacing and monitoring biological systems, with the aim of overcoming current challenges based on the mismatch between biological materials and convectional inorganic conductors. The conjugated polymer/polyelectrolyte complex poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT/PSS) is, up to date, the most widely used polymer for in vitro or in vivo measurements in the field of organic bioelectronics. However, PEDOT/PSS organic electrochemical transistors (OECTs) are limited by depletion mode operation and lack chemical groups that enable synthetic modifications for biointerfacing. Recently introduced thiophene-based polymers with oligoether side chains can operate in accumulation mode, and their chemical structure can be tuned during synthesis, for example, by the introduction of hydroxylated side chains. Here, we introduce a new thiophene-based conjugated polymer, p(g42T-T)-8% OH, where 8% of the glycol side chains are functionalized with a hydroxyl group. We report for the first time the compatibility of conjugated polymers containing ethylene glycol side chains in direct contact with cells. The additional hydroxyl group allows covalent modification of the surface of polymer films, enabling fine-tuning of the surface interaction properties of p(g42T-T)-8% OH with biological materials, either hindering or promoting cell adhesion. We further use p(g42T-T)-8% OH to fabricate the OECTs and demonstrate for the first time the monitoring of epithelial barrier formation of Caco-2 cells in vitro using accumulation mode OECTs. The conjugated polymer p(g42T-T)-8% OH allows organic-electronic-based materials to be easily modified and optimized to interface and monitor biological systems.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2024
National Category
Chemical Sciences Materials Engineering
Identifiers
urn:nbn:se:kth:diva-354709 (URN)10.1021/acsami.4c09197 (DOI)001324895700001 ()39327895 (PubMedID)2-s2.0-85205308331 (Scopus ID)
Funder
Swedish Research Council Formas, 2022-00374Swedish Research Council, 2018-03483Swedish Research Council, 2022-02855Swedish Research Council, 2022-04060KTH Royal Institute of Technology, VF-2019-0110Knut and Alice Wallenberg Foundation, 2020.0206Knut and Alice Wallenberg Foundation, 2021.0312Knut and Alice Wallenberg Foundation, KAW2015.0178Karolinska Institute, 1- 249/2019EU, Horizon 2020, 101025599
Note

Not duplicate with DiVA 1834361

QC 20241213

Available from: 2024-10-10 Created: 2024-10-10 Last updated: 2024-12-13Bibliographically approved
Zeglio, E., Wang, Y., Jain, S., Lin, Y., Avila Ramirez, A. E., Feng, K., . . . Herland, A. (2024). Mixing Insulating Commodity Polymers with Semiconducting n‐type Polymers Enables High‐Performance Electrochemical Transistors. Advanced Materials, 36(23), Article ID adma.202302624.
Open this publication in new window or tab >>Mixing Insulating Commodity Polymers with Semiconducting n‐type Polymers Enables High‐Performance Electrochemical Transistors
Show others...
2024 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 36, no 23, article id adma.202302624Article in journal (Refereed) Published
Abstract [en]

Diluting organic semiconductors with a host insulating polymer is used to increase the electronic mobility in organic electronic devices, such as thin film transistors, while considerably reducing material costs. In contrast to organic electronics, bioelectronic devices such as the organic electrochemical transistor (OECT) rely on both electronic and ionic mobility for efficient operation, making it challenging to integrate hydrophobic polymers as the predominant blend component. This work shows that diluting the n-type conjugated polymer p(N-T) with high molecular weight polystyrene (10 KDa) leads to OECTs with over three times better mobility-volumetric capacitance product (µC*) with respect to the pristine p(N-T) (from 4.3 to 13.4 F V−1 cm−1 s−1) while drastically decreasing the amount of conjugated polymer (six times less). This improvement in µC* is due to a dramatic increase in electronic mobility by two orders of magnitude, from 0.059 to 1.3 cm2 V−1 s−1 for p(N-T):Polystyrene 10 KDa 1:6. Moreover, devices made with this polymer blend show better stability, retaining 77% of the initial drain current after 60 minutes operation in contrast to 12% for pristine p(N-T). These results open a new generation of low-cost organic mixed ionic-electronic conductors where the bulk of the film is made by a commodity polymer.

Place, publisher, year, edition, pages
Wiley, 2024
National Category
Polymer Technologies Materials Engineering Nano Technology Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-345903 (URN)10.1002/adma.202302624 (DOI)001181552500001 ()38431796 (PubMedID)2-s2.0-85187136336 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation, KAW2015.0178 2020.0206Knut and Alice Wallenberg Foundation, 2021.0312Swedish Research Council, 2018–03483Swedish Research Council, 2022‐04060Swedish Research Council, 2022‐02855Karolinska Institute, 1‐249/2019KTH Royal Institute of Technology, VF‐2019‐0110
Note

QC 20240429

Available from: 2024-04-25 Created: 2024-04-25 Last updated: 2025-03-20Bibliographically approved
Toldrà Filella, A., Chondrogiannis, G. & Hamedi, M. (2023). A 3D paper microfluidic device for enzyme-linked assays: Application to DNA analysis. Biotechnology Journal, 18(9), Article ID 2300143.
Open this publication in new window or tab >>A 3D paper microfluidic device for enzyme-linked assays: Application to DNA analysis
2023 (English)In: Biotechnology Journal, ISSN 1860-6768, E-ISSN 1860-7314, Vol. 18, no 9, article id 2300143Article in journal (Refereed) Published
Abstract [en]

A paper microfluidic device capable of conducting enzyme-linked assays is presented: a microfluidic enzyme-linked paper analytical device (μEL-PAD). The system exploits a wash-free sandwich coupling to form beads/analyte/enzyme complexes, which are subsequently added to the vertical flow device composed of wax-printed paper, waxed nitrocellulose membrane and absorbent/barrier layers. The nitrocellulose retains the bead complexes without disrupting the flow, enabling for an efficient washing step. The entrapped complexes then interact with the chromogenic substrate stored on the detection paper, generating a color change on it, quantified with an open-source smartphone software. This is a universal paper-based technology suitable for high-sensitivity quantification of many analytes, such as proteins or nucleic acids, with different enzyme-linked formats. Here, the potential of the μEL-PAD is demonstrated to detect DNA from Staphylococcus epidermidis. After generation of isothermally amplified genomic DNA from bacteria, Biotin/FITC-labeled products were analyzed with the μEL-PAD, exploiting streptavidin-coated beads and antiFITC-horseradish peroxidase. The μEL-PAD achieved a limit of detection (LOD) and quantification <10 genome copies/μL, these being at least 70- and 1000-fold lower, respectively, than a traditional lateral flow assay (LFA) exploiting immobilized streptavidin and antiFITC-gold nanoparticles. It is envisaged that the device will be a good option for low-cost, simple, quantitative, and sensitive paper-based point-of-care testing.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
high-sensitivity paper analytical device, lateral flow test, point-of-care diagnostics, quantitative multi-step assay, smartphone colorimetric readout, vertical flow μPAD
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-338571 (URN)10.1002/biot.202300143 (DOI)000999468200001 ()37222181 (PubMedID)2-s2.0-85161407012 (Scopus ID)
Note

QC 20231107

Available from: 2023-11-07 Created: 2023-11-07 Last updated: 2023-11-07Bibliographically approved
Wang, Z., Heasman, P., Rostami, J., Benselfelt, T., Linares, M., Li, H., . . . Wågberg, L. (2023). Dynamic Networks of Cellulose Nanofibrils Enable Highly Conductive and Strong Polymer Gel Electrolytes for Lithium-Ion Batteries. Advanced Functional Materials, 33(30), Article ID 2212806.
Open this publication in new window or tab >>Dynamic Networks of Cellulose Nanofibrils Enable Highly Conductive and Strong Polymer Gel Electrolytes for Lithium-Ion Batteries
Show others...
2023 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 33, no 30, article id 2212806Article in journal (Refereed) Published
Abstract [en]

Tunable dynamic networks of cellulose nanofibrils (CNFs) are utilized to prepare high-performance polymer gel electrolytes. By swelling an anisotropically dewatered, but never dried, CNF gel in acidic salt solutions, a highly sparse network is constructed with a fraction of CNFs as low as 0.9%, taking advantage of the very high aspect ratio and the ultra-thin thickness of the CNFs (micrometers long and 2–4 nm thick). These CNF networks expose high interfacial areas and can accommodate massive amounts of the ionic conductive liquid polyethylene glycol-based electrolyte into strong homogeneous gel electrolytes. In addition to the reinforced mechanical properties, the presence of the CNFs simultaneously enhances the ionic conductivity due to their excellent strong water-binding capacity according to computational simulations. This strategy renders the electrolyte a room-temperature ionic conductivity of 0.61 ± 0.12 mS cm−1 which is one of the highest among polymer gel electrolytes. The electrolyte shows superior performances as a separator for lithium iron phosphate half-cells in high specific capacity (161 mAh g−1 at 0.1C), excellent rate capability (5C), and cycling stability (94% capacity retention after 300 cycles at 1C) at 60 °C, as well as stable room temperature cycling performance and considerably improved safety compared with commercial liquid electrolyte systems.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
cellulose nanofibrils, composites, energy storages, lithium-ion batteries, polymer electrolytes
National Category
Materials Chemistry Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-338472 (URN)10.1002/adfm.202212806 (DOI)000973324900001 ()2-s2.0-85152801974 (Scopus ID)
Note

QC 20231115

Available from: 2023-11-15 Created: 2023-11-15 Last updated: 2023-11-15Bibliographically approved
Benselfelt, T., Shakya, J., Rothemund, P., Lindström, S. B., Piper, A., Winkler, T. E., . . . Hamedi, M. (2023). Electrochemically Controlled Hydrogels with Electrotunable Permeability and Uniaxial Actuation. Advanced Materials, 35(45), Article ID 2303255.
Open this publication in new window or tab >>Electrochemically Controlled Hydrogels with Electrotunable Permeability and Uniaxial Actuation
Show others...
2023 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 35, no 45, article id 2303255Article in journal (Refereed) Published
Abstract [en]

The unique properties of hydrogels enable the design of life-like soft intelligent systems. However, stimuli-responsive hydrogels still suffer from limited actuation control. Direct electronic control of electronically conductive hydrogels can solve this challenge and allow direct integration with modern electronic systems. An electrochemically controlled nanowire composite hydrogel with high in-plane conductivity that stimulates a uniaxial electrochemical osmotic expansion is demonstrated. This materials system allows precisely controlled shape-morphing at only −1 V, where capacitive charging of the hydrogel bulk leads to a large uniaxial expansion of up to 300%, caused by the ingress of ≈700 water molecules per electron–ion pair. The material retains its state when turned off, which is ideal for electrotunable membranes as the inherent coupling between the expansion and mesoporosity enables electronic control of permeability for adaptive separation, fractionation, and distribution. Used as electrochemical osmotic hydrogel actuators, they achieve an electroactive pressure of up to 0.7 MPa (1.4 MPa vs dry) and a work density of ≈150 kJ m−3 (2 MJ m−3 vs dry). This new materials system paves the way to integrate actuation, sensing, and controlled permeation into advanced soft intelligent systems.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
electrochemical actuation, electronic actuators, hydrogels, nanowires, osmotic pressure, tunable membranes
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-348212 (URN)10.1002/adma.202303255 (DOI)001057441300001 ()2-s2.0-85167722724 (Scopus ID)
Note

QC 20240624

Available from: 2024-06-24 Created: 2024-06-24 Last updated: 2024-06-24Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-9088-1064

Search in DiVA

Show all publications