A novel electrochemical reconstruction in nickel oxide nanowalls on Ni foam and the fine electrochemical performance as anode for lithium ion batteries
A novel electrochemical reconstruction in nickel oxide nanowalls on Ni foam and the fine electrochemical performance as anode for lithium ion batteries
复制标题
泡沫镍上氧化镍纳米壁的新型电化学重构及其作为锂离子电池负极的良好电化学性能
DOI：
10.1016/j.jpowsour.2014.07.137
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发表时间：
2014-12-15
影响因子：
9.2
通讯作者：
Zhang, Lulu
中科院分区：
文献类型：
--
作者：
Ni, Shibing;Lv, Xiaohu;Zhang, Lulu
采用电化学腐蚀法在多孔泡沫镍上直接生长出NiO纳米球，经退火处理后，NiO纳米球表现出优异的循环稳定性和倍率性能，可作为锂离子电池负极材料。其在0.15C下提供1029和761 mAh g（-1）的初始放电和充电容量，100次循环后保持721和704 mAh g（-1）。在0.06 ~ 10 C的不同倍率下循环60次后，随着充放电倍率的降低，NiO/Ni复合材料的放电容量逐渐恢复，在0.06C下循环30次后达到745 mAh·g ~（-1）。NiO/Ni电极的优异电化学性能与循环中的新型电化学重构有关，其可以被描述为大量纳米尺寸颗粒的初始形成以及这些纳米颗粒随后重新组装成独特的多孔结构。(C)2014爱思唯尔有限公司版权所有。
NiO nanowalls are directly grown on porous Ni foam via a facile electrochemical corrosion method and subsequent annealing, which show excellent cycle stability and rate capability as anode for lithium ion batteries. It delivers initial discharge and charge capacity of 1029 and 761 mAh g(-1) at 0.15C, maintaining of 721 and 704 mAh g(-1) after 100 cycles. After 60 cycles at various rates from 0.06 to 10C, the discharge capacity of the NiO/Ni can gradually restore when lowering the charge/discharge, finally arriving at 745 mAh g(-1) after 30 cycles at 0.06C. The excellent electrochemical performance of the NiO/Ni electrode is relevant to a novel electrochemical reconstruction in cycling, which can be described as the initial formation of a large number of nanosized particles and the subsequent reassembly of these nanoparticles into a unique porous architecture. (C) 2014 Elsevier B.V. All rights reserved.