氢氧化锂
电催化剂
材料科学
钴
阴极
化学工程
氢氧化物
催化作用
透射电子显微镜
碳酸锂
碳纤维
复合数
热液循环
碳酸丙烯酯
极化(电化学)
无机化学
纳米技术
电极
电化学
化学
复合材料
有机化学
冶金
离子交换
离子
物理化学
离子键合
工程类
作者
Peng Kuang,Liangyu Li,Chunguang Chen,Tao Huang,Lijuan Zhang,Aishui Yu
标识
DOI:10.1016/j.matlet.2016.04.093
摘要
Cobalt carbonate hydroxide (CCH) composited with XC-72R carbon was synthesized via a simple hydrothermal process. Transmission electron microscopes(TEM) shows that CCH with nanowire morphology is well dispersed in carbon medium. The CCH/C-based oxygen cathode exhibited low polarization with specific capacity of 3500 mA h g−1 at a current density of 0.05 mA cm−2 and prolonged cycling life. The cell with CCH/C catalyst can run for 55 cycles before the terminal potential of discharge declines to 2.0 V with a limited specific capacity of 500 mA h g−1. The improved performance was mainly attributed to the excellent OER activity of CCH/C that Li2O2 can be decomposed in lower potential, which might help avoid generation of undesirable byproducts.
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