This report illustrates an investigation on the electrochemical behaviour of LiFePO₄ in Al³⁺ ion conducting aqueous electrolyte for the first time. It is inferred from the electrochemical measurements that Al³⁺ ion together with the structural Li⁺ ion could take part in the reversible oxidation–reduction process of LiFePO₄. This is also supported by the ex-situ X-ray diffraction and X-ray photoelectron spectroscopy investigations. It is also found that leaching of iron species from LiFePO₄ in the electrolyte results in low cycling stability. This could be mitigated to an appreciable degree by tweaking the electrolyte composition with a low fraction of iron species in the electrolyte.

该报告首次阐述了 LiFePO ₄在 Al ³⁺离子导电水性电解质中的电化学行为研究。从电化学测量推断，Al ³⁺离子和结构Li ⁺离子可以参与LiFePO ₄的可逆氧化还原过程。这也得到了非原位X 射线衍射和 X 射线光电子能谱研究的支持。还发现铁物质从 LiFePO _4中浸出在电解质中导致低循环稳定性。通过在电解质中使用低比例的铁物质来调整电解质成分，可以在相当程度上减轻这种情况。