Wang Yaru, Liu Zhen, Liu Huijun, Liu Huan, Li Bing, Guan Shiyou
School of Materials Science and Engineering, East China University of Science and Technology, No.130, Mei Long Road, Shanghai, 200237, P. R. China.
Institute for Sustainable Energy, Shanghai University, No.99, Shangda Road, Shanghai, 200444, P. R. China.
Small. 2018 Apr;14(17):e1704094. doi: 10.1002/smll.201704094. Epub 2018 Apr 3.
A novel anode material for lithium-ion batteries derived from aromatic imides with multicarbonyl group conjugated with aromatic core structure is reported, benzophenolne-3,3',4,4'-tetracarboxylimide oligomer (BTO). It could deliver a reversible capacity of 829 mA h g at 42 mA g for 50 cycles with a stable discharge plateaus ranging from 0.05-0.19 V versus Li /Li. At higher rates of 420 and 840 mA g , it can still exhibit excellent cycling stability with a capacity retention of 88% and 72% after 1000 cycles, delivering capacity of 559 and 224 mA h g . In addition, a rational prediction of the maximum amount of lithium intercalation is proposed and explored its possible lithium storage mechanism.
报道了一种用于锂离子电池的新型阳极材料，其由具有与芳香核结构共轭的多羰基的芳香酰亚胺衍生而来，即二苯甲酮-3,3',4,4'-四羧基酰亚胺低聚物（BTO）。在42 mA g的电流密度下，它在50个循环中可提供829 mA h g的可逆容量，相对于Li /Li具有0.05 - 0.19 V的稳定放电平台。在420和840 mA g的更高电流密度下，经过1000次循环后，它仍能表现出优异的循环稳定性，容量保持率分别为88%和72%，放电容量分别为559和224 mA h g。此外，还对锂嵌入的最大量进行了合理预测，并探讨了其可能的锂存储机制。
