Abstract
In this work, we investigate factors affecting the capacity retention of aqueous copper hexacyanoferrate/Zn batteries. We compare the performance of four different copper hexacyanoferrate (CuHCF) samples as cathode in CuHCF/Zn cells with Na2SO4 and ZnSO4 based electrolytes at different pH. In Na2SO4 electrolyte, the capacity retention is improved at lower pH, whereas cells with ZnSO4 electrolyte perform similarly at pH 2 and 4. Finally, we show that the performance of CuHCF/Zn cells is highly dependent on the CuHCF sample, underlining the necessity for detailed synthesis description and thorough structural characterization of electrode materials.
Original language | English |
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Pages (from-to) | 2036-2044 |
Journal | Materials Advances |
Volume | 2 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2021 |