Fan Zheng, Hou Zhichao, Lu Wenqiang, Zheng Hongbao, Chen Nan, Yao Mingguang, Wang Chunzhong, Jiang Heng, Zhang Dong, Du Fei
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, P. R. China.
Small. 2025 Jan;21(1):e2406501. doi: 10.1002/smll.202406501. Epub 2024 Oct 25.
Aqueous manganese-ion batteries (AMIBs) are becoming more noticeable because of their excellent theoretical capacity, outstanding safety profile, and cost-effectiveness. However, there aren't many studies on cathode materials appropriate for AMIBs, and the manganese-ion storage mechanisms within these materials have not been thoroughly investigated. Furthermore, the electrochemical performance of existing cathode materials remains suboptimal. Here, AgVO is designed and synthesized as the cathode material and introduces the combination displacement/intercalation reaction mechanism to the manganese ion storage for the first time. AgVO demonstrates a capacity retention of 90.3% after 1200 cycles at 5 A g⁻¹ and achieves a high rate performance of 100.01 mAh g⁻¹ at 20 A g⁻¹. This impressive electrochemical performance is attributed to the reaction, which provides more Mn storage sites and generates highly conductive Ag within the electrode. This study presents a novel approach to achieving high-capacity AMIBs.
水系锰离子电池（AMIBs）因其出色的理论容量、卓越的安全性能和成本效益而越来越受到关注。然而，针对适用于AMIBs的阴极材料的研究并不多，并且这些材料中的锰离子存储机制尚未得到充分研究。此外，现有阴极材料的电化学性能仍不尽人意。在此，设计并合成了AgVO作为阴极材料，并首次将复合置换/嵌入反应机制引入到锰离子存储中。AgVO在5 A g⁻¹下循环1200次后容量保持率为90.3%，在20 A g⁻¹下实现了100.01 mAh g⁻¹的高倍率性能。这种令人印象深刻的电化学性能归因于该反应，它提供了更多的锰存储位点并在电极内生成了高导电性的银。本研究提出了一种实现高容量AMIBs的新方法。
