首页|三维泡沫状结构生物质碳/MoS2复合材料的电化学储锂性能

三维泡沫状结构生物质碳/MoS2复合材料的电化学储锂性能

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以废弃油茶籽粕作为碳源,将MoS2负载于生物质碳上,再涂覆聚多巴胺盐酸盐构建复合型生物质碳/MoS2电极材料.研究不同MoS2含量复合电极材料的电化学储锂性能.SEM观察结果表明,该复合材料具有以MoS2作为夹层的三维泡沫状结构.XRD和HRTEM测试结果表明MoS2的层间距增大.XPS分析结果显示,活性材料中已形成Mo—N键.电化学性能测试结果表明,MoS2含量为63％的活性材料在100 mA/g电流密度下具有较高的初始比容量(1434 mA·h/g).在大电流、长循环条件下此电极材料呈良好的循环稳定性,其容量保持率接近100％,在电化学动力学过程中具有较好的锂离子脱嵌能力.
Electrochemical lithium storage performance of three-dimensional foam-like biocarbon/MoS2 composites
Molybdenum disulfide (MoS2) was loaded on biocarbon using waste camellia dregs (CDs) as the carbon source, which was further coated with dopamine hydrochloride to construct biocarbon/MoS2 electrode composites. The electrochemical lithium storage performance of the composites with different MoS2 contents was investigated. SEM results demonstrated that the composite had a three-dimensional foam-like structure with MoS2 as the interlayer. XRD and HRTEM tests revealed that MoS2 interlayer spacing in the composite was expanded. XPS analysis showed that new Mo—N bonds were formed in the active material. The electrochemical tests showed that the composite with a MoS2 content of 63％ had a high initial specific capacity of 1434 mA·h/g at a current density of 100 mA/g. After a long cycle at a high current, it also showed good cycling stability and the capacity retention was nearly 100％. In addition, it had good lithium ion deintercalation ability in the electrochemical kinetics test.

electrochemical lithium storage performancelithium-ion batteriescamellia dregsMoS2compositespseudocapacityanode

马蓓贝、陈水姣、黄也唯、聂桢桢、仇霄彬、解修强、吴振军

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湖南大学化学化工学院,长沙 410082

湖南大学材料科学与工程学院,长沙 410082

电化学储锂性能 锂离子电池 油茶籽粕 二硫化钼 复合材料 赝电容 负极

authors are grateful for the financial supports from the National Natural Science Foundation of Chinaauthors are grateful for the financial supports from the National Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province, ChinaYoung Teacher Promotion Fund by Hunan University, China, and the Fundamental Research Funds of the Central Universities, Chi

50702020811714612017JJ2040

2021

10.1016/S1003-6326(21)65492-4

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(1)
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