Mesoporous Cobalt Molybdenum Nitride: A Highly Active Bifunctional Electrocatalyst and Its Application in Lithium鈥揙2 Batteries

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• 作者：Kejun Zhang ; Lixue Zhang ; Xiao Chen ; Xiang He ; Xiaogang Wang ; Shanmu Dong ; Pengxian Han ; Chuanjian Zhang ; Shan Wang ; Lin Gu ; Guanglei Cui
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：January 17, 2013
• 年：2013
• 卷：117
• 期：2
• 页码：858-865
• 全文大小：499K
• 年卷期：v.117,no.2(January 17, 2013)
• ISSN：1932-7455

文摘

Bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) play a critical role in fuel cells and metal鈥揳ir batteries. In this article, mesoporous cobalt molybdenum nitride (Co₃Mo₃N) is prepared using a coprecipitation method followed by ammonia annealing treatment. Much more active sites generated by well designed mesoporous nanostructure and intrinsically electronic configuration lead to excellent electrocatalytic performance for ORR/OER in Li鈥揙₂ cells, delivering considerable specific capacity and alleviating polarization. It is manifested that high charge鈥揹ischarge efficiency and good cycle stability were obtained in the LiTFSI/TEGDME electrolyte owing to a stable interface between optimized electrolyte and electrode material.