Fluorine-Doped Carbon Particles Derived from Lotus Petioles as High-Performance Anode Materials for Sodium-Ion Batteries
Fluorine-Doped Carbon Particles Derived from Lotus Petioles as High-Performance Anode Materials for Sodium-Ion Batteries
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莲花叶柄掺氟碳颗粒作为高性能钠离子电池负极材料
DOI：
10.1021/acs.jpcc.5b05443
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发表时间：
2015
影响因子：
3.7
通讯作者：
Bao Jianchun
中科院分区：
文献类型：
--
作者：
Wang Pengzi;Qiao Bin;Du Yichen;Li Yafei;Zhou Xiaosi;Dai Zhihui;Bao Jianchun
与传统碳材料在钠离子电池中的电化学性能的广泛研究相比，关于掺氟碳材料的钠存储性能的研究还很少。本文首次报道了以荷叶柄为原料合成的掺氟碳颗粒(F-CP)作为钠离子电池负极材料的应用。电化学测试表明，在电流密度为50 mAg-1(0.001~2.8V)时，F-CP电极的初始充电容量为230 mA h g-1，远高于香蕉皮碳电极的149 mA h g-1。即使在200 mA g-1下，F-CP电极在200次循环后仍能保持228 mA h g-1的充电容量，初始充电容量保持率为99.1%，而BPC电极的充电容量为107 mA h g-1，初始充电容量保持率为71.8%。F掺杂和较大的层间距以及无序结构导致了较低的晶格尺寸。
In contrast to the extensive investigation of the electrochemical performance of conventional carbon materials in sodium-ion batteries, there has been scarcely any study of sodium storage property of fluorine-doped carbon. Here we report for the first time the application of fluorine-doped carbon particles (F-CP) synthesized through pyrolysis of lotus petioles as anode materials for sodium-ion batteries. Electrochemical tests demonstrate that the F-CP electrode delivers an initial charge capacity of 230 mA h g–1 at a current density of 50 mA g–1 between 0.001 and 2.8 V, which greatly outperforms the corresponding value of 149 mA h g–1 for the counterpart banana peels-derived carbon (BPC). Even under 200 mA g–1, the F-CP electrode could still exhibit a charge capacity of 228 mA h g–1 with initial charge capacity retention of 99.1% after 200 cycles compared to the BPC electrode with 107 mA h g–1 and 71.8%. The F-doping and the large interlayer distance as well as the disorder structure contribute to a lower...