This report illustrates an investigation on the electrochemical stability of bismuth oxychloride (BiOCl) for rechargeable aluminium–metal battery for the first time. It is shown that Al³⁺ ion could be stored in bismuth oxychloride in aqueous electrolyte. A stable discharge capacity of 145 mAh g⁻¹ was achieved over 200 cycles at a current rate of 2.5 A g⁻¹. It is found that capacity decline was a major concern. However, a simple and innovative strategy was adopted to dramatically improve the electrochemical stability by synthesizing a binder-free BiOCl electrode on a thermally exfoliated graphite current collector. The use of such current collector is also shown for the first time. The facile method of processing the exfoliated graphite is also discussed.

本报告首次说明了对可充电铝金属电池的氯氧化铋 (BiOCl) 电化学稳定性的研究。结果表明，Al ³⁺离子可以储存在含水电解质中的氯氧化铋中。在 2.5 A g ^-1的电流速率下，200 次循环后实现了145 mAh g ^{-1 的}稳定放电容量。发现容量下降是一个主要问题。然而，通过在热剥离石墨集流体上合成无粘合剂的 BiOCl 电极，采用了一种简单而创新的策略来显着提高电化学稳定性。还首次展示了这种集电器的使用。还讨论了处理薄片化石墨的简便方法.