论文期刊

Enhanced Structural Stability of Nickel–Cobalt Hydroxide via Intrinsic Pillar Effect of Metaborate for High-Power and Long-Life Supercapacitor Electrodes.




作者: Chen, Y. Z; Pang, W. K.; Bai, H. H; Zhou, T. F.; Liu, Y. N; Li, S.; Guo, Z. P
发表/完成日期: 2016-12-05
期刊名称: Nano Letters
期卷: 17
相关文章:
论文简介
Layered α-Ni(OH)2 and its derivative bimetallic hydroxides (e.g., α-(Ni/Co)(OH)2) have attracted much attention
due to their high specific capacitance, although their insufficient cycling stability has blocked their wide application in various technologies. In this work, we demonstrate that the cycling performance of α-(Ni/
Co)(OH)2 can be obviously enhanced via the intrinsic pillar effect of metaborate. Combining the high porosity feature of the metaborate stabilized α-(Ni/Co)(OH)2 and the improved electronic conductivity offered by graphene substrate, the average capacitance fading rate of the metaborate stabilized α-(Ni/Co)(OH)2 is only ∼0.0017% per cycle within 10 000 cycles at the current density of 5 A g−1. The rate performance is excellent over a wide temperature range from −20 to 40 °C. We believe that the enhancements should mainly be ascribed to the excellent structural stability offered by the metaborate pillars, and the detailed mechanism is discussed.
版权所有:西安交通大学 站点设计:网络信息中心 陕ICP备05001571号 IPhone版本下载 IPhone版本下载    Android版本下载 Android版本下载
欢迎您访问我们的网站,您是第 位访客
推荐分辨率1024*768以上 推荐浏览器IE7 Fifefox 以上