The electrochemical performance of nickel chromium oxide as a new anode material for lithium ion batteries
The electrochemical performance of nickel chromium oxide as a new anode material for lithium ion batteries
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新型锂离子电池负极材料镍铬氧化物的电化学性能
DOI：
10.1016/j.electacta.2015.07.071
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发表时间：
2015-09-10
影响因子：
6.6
通讯作者：
Zhang, Lulu
中科院分区：
文献类型：
--
作者：
Ma, Jianjun;Ni, Shibing;Zhang, Lulu
采用水热前处理和后续烧结的方法成功制备了NiCr2O4，作为添加天然石墨和海藻酸钠粘结剂的锂离子电池负极材料，表现出了良好的电化学性能。在70 mAg(-1)的比电流下，首次循环的充放电容量分别为465.5和919.8 mAHg(-1)，随着循环次数的增加，充放电容量逐渐增加。循环100次后，充放电容量分别为582.9和592.5 mAHg(-1)。此外，还证明了天然石墨的加入能有效地提高NiCr2O4电极的导电性，适量的天然石墨通过与天然石墨在循环过程中的协同电化学重构，有利于提高电极的比容量和循环稳定性。(C)2015爱思唯尔有限公司。保留所有权利。
NiCr2O4 is successfully prepared via hydrothermal pretreatment and subsequent sintering, which shows excellent electrochemical performance as a new anode material for lithium ion batteries with natural graphite adding and sodium alginate binder. At a specific current of 70 mA g(-1), it delivers charge and discharge capacities of 465.5 and 919.8 mAh g(-1) in the initial cycle, which gradually increases along with cycle number owing to an electrochemical reconstruction in cycling. After 100 cycles, the charge and discharge capacities are 582.9 and 592.5 mAh g(-1), respectively. Furthermore, it is testified that natural graphite adding can effectively improve the electronic conductivity of the NiCr2O4 electrode, and an appropriate amount of natural graphite is beneficial to improve the specific capacity and cycle stability of the electrode owing to a coordinated electrochemical reconstruction between NiCr2O4 and natural graphite in cycling. (C) 2015 Elsevier Ltd. All rights reserved.