Change search
ReferencesLink to record
Permanent link

Direct link
Lignin as a Binder Material for Eco-Friendly Li-Ion Batteries
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0001-5816-2924
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0002-9392-9059
Show others and affiliations
2016 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 9, no 3, 127Article in journal (Refereed) PublishedText
Abstract [en]

The industrial lignin used here is a byproduct from Kraft pulp mills, extracted from black liquor. Since lignin is inexpensive, abundant and renewable, its utilization has attracted more and more attention. In this work, lignin was used for the first time as binder material for LiFePO4 positive and graphite negative electrodes in Li-ion batteries. A procedure for pretreatment of lignin, where low-molecular fractions were removed by leaching, was necessary to obtain good battery performance. The lignin was analyzed for molecular mass distribution and thermal behavior prior to and after the pretreatment. Electrodes containing active material, conductive particles and lignin were cast on metal foils, acting as current collectors and characterized using scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge cycles. Good reversible capacities were obtained, 148 mAhg(-1) for the positive electrode and 305 mAhg(-1) for the negative electrode. Fairly good rate capabilities were found for both the positive electrode with 117 mAhg(-1) and the negative electrode with 160 mAhg(-1) at 1C. Low ohmic resistance also indicated good binder functionality. The results show that lignin is a promising candidate as binder material for electrodes in eco-friendly Li-ion batteries.

Place, publisher, year, edition, pages
MDPI AG , 2016. Vol. 9, no 3, 127
Keyword [en]
lignin, binder, leaching, electrodes, Li-ion batteries
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-186569DOI: 10.3390/ma9030127ISI: 000373805400072ScopusID: 2-s2.0-84962652184OAI: oai:DiVA.org:kth-186569DiVA: diva2:927987
Note

QC 20160513

Available from: 2016-05-13 Created: 2016-05-13 Last updated: 2016-05-13Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Lu, HuiranCornell, AnnBehm, MårtenLeijonmarck, SimonLindbergh, Göran
By organisation
Applied Electrochemistry
In the same journal
Materials
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 10 hits
ReferencesLink to record
Permanent link

Direct link