期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 69, 页码 34184-34193出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.08.011
关键词
SnO2/Carbon; Biological enzymatic hydrolysis; Biomass porous carbon; Nitrogen doping; Lithium ion battery; Sodium ion battery
资金
- National Natural Sci-ence Foundation of China [52064031]
- Natural Science Foundation of Yunnan Province [201 8HB012]
- Program for Innovative Research Team in Uni-versity of Ministry of Education of China [IRT 17R48]
- Analysis and Test Foundation of Kunming University of Sci-ence and Technology [2019M20182202071]
In this study, a nitrogen-doped 3D porous starch-derived carbon/SnO2/carbon composite was synthesized using biological enzymatic hydrolysis. The composite exhibited high initial discharge capacity and good cycle stability for both lithium-ion batteries and sodium-ion batteries, showing potential for other energy storage systems.
In this study, a nitrogen-doped 3D porous starch-derived carbon/SnO2/carbon (PSC/SnO2/C) composite is synthesized with porous starch as a carbon source by biological enzymatic hydrolysis. Compared with the traditional complex acid-base reagent method, the biological enzymatic method is more environmentally friendly and economical, and it can also naturally introduce nitrogen sources and dope the carbon layer. Many mesoporous nanostructures provide enough buffer space and promote the ions' and electrons' transmission rate. The formation of the Sn-O-C bond between SnO2 and carbon ensures the stability of the structure. As a result, the PSC/SnO2/C composite exhibits a high initial discharge capacity (1802 mAhg(-1) at 0.2 A g(-1) for LIBs and 549 mAh g(-1) at 0.1 A g(-1) for SIBs) and good cycle stability (701 mAh g(-1) at 0.2 A g(-1) after 100 cycles for LIBs and 271 mAh g(-1) at 0.1 A g(-1) after 100 cycles for SIBs). This synthesis method can prepare other energy storage systems such as fuel cells, supercapacitors, and metal ion batteries. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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