Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
The need for energy storage is growing to reduce the carbon footprint of electricity
production. Among the conceivable storage solutions, the redox ﬂow battery (RFB) is
one of the most promising. The best-researched type is the vanadium ﬂow battery, but
extensive research is underway to develop a cheaper and more compact system. The full-
iron redox ﬂow battery is an attractive alternative. A testing module has been developed,
in order to study the inﬂuence of diﬀerent operating parameters on the system output.
The experiments highlight that the electrode compression, the stacking of single cells and
the charge and discharge rates are design key factors and need a precise optimization. A
35% electrode compression is a good trade-oﬀ between pump power losses and low contact
resistances inside the cell. Single cells undergo a higher self-discharge when they are piled
up; it is the direct eﬀect of a power leakage called shunt current. The stack design must
be thought with caution to lessen this power loss. The cycling proﬁle also inﬂuence the
battery performance. The ﬁndings conﬁrm that optimizing the charge and discharge rates
can prolong the system lifespan.
2016. , 50 p.
Energy storage, Redox ﬂow battery, Electrode compression, Shunt current, Battery eﬃciency