期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 41, 页码 27710-27719出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b09013
关键词
Mn3O4 nanowires; 3D graphene/single-walled carbon nanotube catalysts; microwave irradiation strategy; Mg/air batteries; energy storage and conversion
资金
- National Natural Science Foundation of China [21203051]
- Training Program Foundation for the Excellent Youth Talents of Hebei Province
- Natural Science Foundation of Hebei Province [B2014209318, B2014209319]
- Research Fund of the Excellent Youth Fund for Higher Education of Hebei Province [YQ2013014, Y2012031]
- Doctoral Foundation of North China University of Science and Technology [GP201310]
- Australian Research Council [LP120200432]
The exploration of highly efficient catalysts for the oxygen reduction reaction to improve sluggish kinetics still remains a great challenge for advanced energy conversion and storage in metal/air batteries. In this work, ultrafine Mn3O4 nanowires/three-dimensional graphene/single-walled carbon nanotube catalysts with an electron transfer number of 3.95 (at 0.60 V vs Ag/AgCl) and kinetic current density of 21.7-28.8 mA cm(-2) were developed via a microwave-irradiation-assisted hexadecyl trimethylammonium bromide (CTAB) surfactant procedure to greatly enhance the overall catalytic performance in Mg/air batteries. To match the electrochemical activity of the cathode catalysts, a large-scale Mg anode prepared with micropersimmon-like particles via a mechanical disintegrator and Mg(NO3)(2)-NaNO2-based electrolyte containing 1.0 wt % trihexyl(tetradecyl)phosphonium chloride ionic liquid were applied. Combining the ultrafine Mn3O4 nanowires/three-dimensional graphene/single-walled carbon nanotube as an efficient electrocatalyst for the oxygen reduction reaction and an Mg micro-/nanoscale anode in the novel electrolyte, the advanced Mg/air batteries demonstrated a high cell open circuit voltage (1.49 V), a high plateau voltage (1.34 V), and a long discharge time (4177 min) at 0.2 mA cm(-1), showing a high energy density. Therefore, it is believed that this device configuration has great potential for application in new energy storage technologies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据