用于高性能锂离子电池的毛荔枝状CoNiFeO阳极的制备。
Preparation of rambutan-like CoNiFeO as anode for high-performance lithium-ion batteries.
作者信息
Wang Qian, Wu Yongzi, Pan Ning, Yang Chenyu, Wu Shuo, Li Dejie, Gu Shaonan, Zhou Guowei, Chai Jinling
机构信息
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China.
Key Laboratory of Fine Chemicals in Universities of Shandong, Jinan Engineering Laboratory for Multi-scale Functional Materials, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.
出版信息
Front Chem. 2022 Oct 20;10:1052560. doi: 10.3389/fchem.2022.1052560. eCollection 2022.
NiFeO is a kind of promising lithium ion battery (LIB) electrode material, but its commercial applications have been limited due to the electronic insulation property and large volume expansion during the conversion reaction process, which results in rapid capacity decrease and poor cycling stability. We synthesized rambutan-like CoNiFeO using the self-templating solvothermal method. The special structure of CoNiFeO which was formed by the assembly of numerous nanosheets could effectively buffer the volume change during the charging and discharging process. Partial substitution of Ni with Co. in NiFeO leads to CoNiFeO, the coexisting of both nickel and cobalt components is expected to provide more abundant redox reactions. The specific capacity of the rambutan-like CoNiFeO as an anode material for LIB could reach 963 mA h g at the current density of 500 mA g after 200 cycles, confirming that the as-synthesized material is a promising candidate for LIBs.
镍铁氧化物是一种很有前景的锂离子电池（LIB）电极材料，但其商业应用受到限制，原因在于其电子绝缘性能以及在转化反应过程中体积大幅膨胀，这导致容量迅速下降且循环稳定性较差。我们采用自模板溶剂热法合成了红毛丹状的钴镍铁氧化物。由众多纳米片组装而成的钴镍铁氧化物的特殊结构能够有效缓冲充放电过程中的体积变化。在镍铁氧化物中用钴部分替代镍得到钴镍铁氧化物，镍和钴两种成分的共存有望提供更丰富的氧化还原反应。作为锂离子电池负极材料的红毛丹状钴镍铁氧化物，在电流密度为500 mA g 时，经过200次循环后比容量可达963 mA h g，这证实了所合成的材料是锂离子电池的一个有潜力的候选材料。
Zotero 插件