Biotemplated synthesis of three-dimensional porous MnO/C-N nanocomposites from renewable rapeseed pollen: An anode material for lithium-ion batteries
Biotemplated synthesis of three-dimensional porous MnO/C-N nanocomposites from renewable rapeseed pollen: An anode material for lithium-ion batteries
复制标题
利用可再生油菜籽花粉生物模板合成三维多孔 MnO/C-N 纳米复合材料：锂离子电池负极材料
DOI：
10.1007/s12274-016-1283-7
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发表时间：
2017-01-01
期刊：
影响因子：
9.9
通讯作者：
Yu, Shu-Hong
中科院分区：
文献类型：
--
作者：
Chen, Li-Feng;Ma, Sheng-Xiang;Yu, Shu-Hong
锂离子电池（LIB）目前被认为是最受欢迎的电源之一。为了构建表现出长期耐久性的先进LIB，人们非常关注提高其较差的循环稳定性。由于LIB的性能取决于所采用的电极材料，因此提高其寿命的最有前途的方法是设计新型电极材料。我们在此描述了三维（3D）多孔MnO/C-N纳米结构作为长循环寿命LIB的阳极材料的合理设计，其基于通过简单的浸渍-退火路线从廉价、可再生和丰富的油菜花粉（R-花粉）制备。值得注意的是，所制备的具有优化3D纳米结构的MnO/C-N具有高比容量（100 mA·g-1倍率下为756.5 mAh·g-1）、长寿命（放电比容量为513.0 mAh·g-1，约为初始可逆容量的95.16%，在300 mA·g-1下循环400次后）和良好的倍率性能。因此，这种材料代表了下一代LIB高性能阳极的有前途的替代候选物。
Lithium-ion batteries (LIBs) are currently recognized as one of the most popular power sources available. To construct advanced LIBs exhibiting long-term endurance, great attention has been paid to enhancing their poor cycle stabilities. As the performance of LIBs is dependent on the electrode materials employed, the most promising approach to improve their life span is the design of novel electrode materials. We herein describe the rational design of a three-dimensional (3D) porous MnO/C-N nanoarchitecture as an anode material for long cycle life LIBs based on their preparation from inexpensive, renewable, and abundant rapeseed pollen (R-pollen) via a facile immersion-annealing route. Remarkably, the as-prepared MnO/C-N with its optimized 3D nanostructure exhibited a high specific capacity (756.5 mAh·g−1 at a rate of 100 mA·g−1), long life span (specific discharge capacity of 513.0 mAh·g−1, ~95.16% of the initial reversible capacity, after 400 cycles at 300 mA·g−1), and good rate capability. This material therefore represents a promising alternative candidate for the high-performance anode of next-generation LIBs.