Cu2Se-ZnSe heterojunction encapsulated in carbon fibers for high-capacity anodes of sodium-ion batteries-易丝帮

Cu2Se-ZnSe heterojunction encapsulated in carbon fibers for high-capacity anodes of sodium-ion batteries

2020/12/25 15:48:23 Gao, Q. Li, P. C. Ding, S. S. He, H. C. Cai, M. Q. Ning, X. T. Cai, Y. Zhang, M.

Transition metal chalcogenides have been one of the research hotspots in sodium-ion batteries (SIBs). In this work, Cu2Se-ZnSe heterojunction nanoparticles were embedded in carbon nanofibers to obtain the composites (Cu2Se-ZnSe-CNFs). As anodes for SIBs, Cu2Se-ZnSe-CNFs showed a reversible capacity of 310 mAh g(-1) after 100 cycles at 0.1 A g(-1). Their rate capacity is 237 mAh g(-1) at 2 A g(-1). The high specific capacities of Cu2Se-ZnSe-CNFs at a wide range of current density can be attributed to the type-I heterojunction between Cu2Se and ZnSe in composites, which can speed up electron transport. In addition, the protection from CNFs is another factor to ensure the long lifetime of Cu2Se-ZnSe-CNF anodes. The strategy of using heterojunction to promote the electrochemical properties of multi-metal sulfides may be helpful for the application of carbon composites in electrochemical catalysts and other batteries.

Journal: Ionics
Volume: 26
Issue:
Pages: 5525-5533
ISSN: 0947-7047
DOI:
Year: 2020
Number: 11
Type: Journal Article

相关推荐

暂无相关推荐

网友评论 请遵循相关法律法规，理性发言

查看更多回复

推荐视频

文献速递：南通大学徐思峻教授&葛建龙教授：防火/耐酸/耐碱芳纶/碳纳米纤维摩擦纳米发电机

Advanced Fiber Materials DOI:10.1007/s42765-023-00288-2

电纺名人录：逢甲大学特聘教授林佳弘

林佳弘，逢甲大学特聘教授、博士生导师；兼任中国医药大学教授，天津工业大学特聘教授，青岛大学客座教授，“闽江学者”讲座教授，Polymers特刊主编，及多家国际期刊审查委员。专研纤维与纺织、功能性纺织品、医疗与保健、生医与纳米、能源与环境复合材料。“Nonwoven Engineering”领域国际期刊量超过300篇，居全世界第1名学术荣誉学者；2017年入选全世界前1％科学家。

电纺名人录：东南大学代云茜教授

代云茜，东南大学教授、博士生导师。江苏省六大人才高峰入选者、江苏省科协青年托举工程入选者，担任中国复合材料学会超细纤维分会副主任委员、多家国际著名学术期刊审稿人。