Zhang Haode, Tian Yu, Wang Wenxuan, Jian Zelang, Chen Wen
School of Material Science and Engineering, Wuhan University of Technology, 122, Luoshi Road, Hongshan District, Wuhan, 430070, China.
Angew Chem Int Ed Engl. 2022 Jul 4;61(27):e202204351. doi: 10.1002/anie.202204351. Epub 2022 May 11.
Nonmetallic ammonium (NH ) ion batteries are promising candidates for large-scale energy storage systems, which have the merit of low molar mass, sustainability, non-toxicity and non-dendrite. Herein, for the first time, we introduce the novel organic ammonium ion batteries (OAIBs). Significantly, a manganese-based Prussian white analogue (noted as MnHCF) as cathode exhibits a reversible capacity of 104 mAh g with 98 % retention over 100 cycles. We further demonstrate the electrochemical performance of the NH ion full cell, which delivers a reversible capacity of 45 mAh g with a broad electrochemical window. Combining ex situ XPS, ex situ XRD results and electrochemical properties, the NH ion storage mechanism of MnHCF in a non-aqueous electrolyte is clearly revealed. This work verifies the feasibility of employing NH ions as charge carriers in organic energy storage systems and provides new insights for designing organic nonmetallic ion batteries with broad electrochemical windows and high energy density.
非金属铵（NH ）离子电池是大规模储能系统的有前途的候选者，其具有低摩尔质量、可持续性、无毒和无枝晶的优点。在此，我们首次介绍了新型有机铵离子电池（OAIBs）。值得注意的是，一种基于锰的普鲁士白类似物（记为MnHCF）作为阴极，在100次循环中表现出104 mAh g的可逆容量，保留率为98%。我们进一步展示了NH 离子全电池的电化学性能，其在宽电化学窗口下提供45 mAh g的可逆容量。结合非原位XPS、非原位XRD结果和电化学性质，清楚地揭示了MnHCF在非水电解质中的NH 离子存储机制。这项工作验证了在有机储能系统中使用NH 离子作为电荷载体的可行性，并为设计具有宽电化学窗口和高能量密度的有机非金属离子电池提供了新的见解。
