作者:Lin, M (Lin, Min)[1,2 ]; Deng, MD (Deng, Mengdie)[3 ]; Zhou, CJ (Zhou, Chaojin)[1,2 ]; Shu, YJ (Shu, Yijin)[3 ]; Yang, LC (Yang, Lichun)[1,2 ]; Ouyang, LZ (Ouyang, Liuzhang)[1,2 ]; Gao, QS (Gao, Qingsheng)[3 ]; Zhu, M (Zhu, Min)[1,2 ]
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文献类型:Article
As a promising anode material for sodium-ion batteries, MoS2 unfortunately suffers from its poor electrical/ionic conductivity and drastic volume variation during the repeated sodiation/desodiation, which lead to unsatisfied rate capability and cycleability. Herein, we employ popcorn, an environment benign biomass, as carbon source to construct MoS2/popcorn-derived carbon composites. The composite processes a sandwich-like structure due to the intercalation of carbon, realizing sufficient contact of MoS2 monolayers with carbon as well as expanded interspace of (002) layers in MoS2. The sandwiched structure facilitates electronic transfer as well as Na+ diffusion, and is robust to the volume variation during the sodiation/desodiation. As an anode material for sodium-ion batteries, the optimized composite displays a reversible capacity of 475 mAh g(-1) at 0.2 A g(-1) in the initial cycle, and maintains 406.9 mAh g(-1) after 340 cycles. When coupled with NaV0.9Fe0.1PO4 in full sodium-ion batteries, the composite delivers a reversible capacity of 278.4 mAh g(-1) in the voltage range of 1.0-3.2 V at 1 A g(-1), indicating its practical application for sodium-ion batteries. (C) 2019 Elsevier Ltd. All rights reserved.
作者关键词:Molybdenum disulfide; Biomass derived carbon; Anode material; Sandwiched structure; Sodium-ion battery
KeyWords Plus:EXCELLENT ELECTROCHEMICAL PERFORMANCE; LITHIUM-ION; ENERGY-STORAGE; NANOSHEETS; GRAPHENE; TRANSITION; INTERFACE; COMPOSITES; MOLYBDENUM; NANOTUBES
通讯作者地址:Yang, LC (通讯作者)
 | South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China. |
| South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China. |
| Jinan Univ, Dept Chem, Coll Chem & Mat Sci, 601 Huangpu Ave West, Guangzhou 510632, Guangdong, Peoples R China. |
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| 基金资助机构 | 授权号 |
|---|---|
| National Natural Science Foundation of China | 51671089 21773093 |
| Fund for Innovative Research Groups of the National Natural Science Foundation of China | 51621001 |
| Guangdong Natural Science Funds for Distinguished Young Scholar | 2017B030306004 2015A030306014 |
| Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme | |
| Guangdong Special Support Program | 2017TQ04N224 |
| Open Fund of the Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials | AESM201701 |