材料科学
阳极
锰
阴极
电极
功率密度
离子
化学工程
涂层
储能
空隙(复合材料)
纳米线
纳米技术
复合材料
冶金
功率(物理)
电气工程
热力学
物理化学
化学
工程类
量子力学
物理
作者
Jian‐Gan Wang,Dandan Jin,Huanyan Liu,Cunbao Zhang,Rui Zhou,Chao Shen,Keyu Xie,Bingqing Wei
出处
期刊:Nano Energy
[Elsevier]
日期:2016-04-01
卷期号:22: 524-532
被引量:89
标识
DOI:10.1016/j.nanoen.2016.02.051
摘要
High-rate and long-cycle life Li-ion batteries constructed with all-manganese-based electrode materials have been successfully realized. The key to the success is the facile green synthesis of the anode: MnO@C core–shell nanowires with internal void spaces and a uniform carbon coating shell. The unique one-dimensional nano-configuration provides reduced solid-state distance for Li-ion/electron transport, enhanced electrical conductivity for charge transfer, and effectively volumetric accommodation for Li-ion insertion/extraction, thus enabling the MnO@C nanostructures to exhibit high-rate Li-ion storage capacity and long cycling stability. When coupled with a nanostructured LiMn2O4 cathode, the all-manganese-based MnO@C∥LiMn2O4 full cell characterizes a high energy density of 397 Wh kg−1, high rate capability (215 Wh kg−1 at a power density of 6.2 kW kg−1), and an extremely low decay rate of 0.087% per cycle over 1000 cycles. Combining with additional merits of low cost, eco-friendliness, and safe operation, our design will shed light on fabricating high-performance Li-ion batteries from all manganese-based electrode materials.
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