期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 735, 期 -, 页码 1306-1313出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.11.225
关键词
Soda pulping black liquor; MnO; MnS; Hollow mesoporous sphere; Anode
资金
- Natural Science Foundation of China [51672139, 51472127, 51272144]
- Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education [KF2016-01]
MnX/SiC/S-carbon nanosheets (MnX/SiC/S-CN) were synthesized by using soda pulping black liquor (SPBL) as raw material and template. The phase components of MnX/SiC/S-CN were controlled and designed by changing doping amount of MnSO4. Herein, the hollow mesoporous MnO/MnS/SiC/S-carbon nanosheet (MnO/MnS/SiC/S-CN) composites were prepared and exhibited excellent electrochemical performances. As anode, the MnO/MnS/SiC/S-CN electrode delivered good cycle performance (756 mAh g(-1) after 50 cycles at a current density of 1000 mA g(-1)) and remarkable rate capability (685 mAh g(-1) when the current density backed to the initial current of 1 A g(-1) after a high current density ranging from 1 A g(-1) to 20 A g(-1) for 70 cycles). The presence of flexile SiC/S-graphitized carbon nanosheets (SiC/SGCN) is able to buffer the large volume expansion and contraction of MnO/MnS nanoparticles during the cycling process. Otherwise, the hollow porous is another key factor that not only decreases the transmission distance of Li+ and electron, but also provides internal and external surface for the attachment of Li+. Recycled resources of SPBL help protect our environment, keep our planet healthy and provide highly economic values. (C) 2017 Elsevier B.V. All rights reserved.
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