Cage-Confinement Pyrolysis Strategy to Synthesize Hollow Carbon Nanocage-Coated Copper Phosphide for Stable and High-Capacity Potassium-Ion Storage

doi:10.1021/acsami.1c16641

	Cage-Confinement Pyrolysis Strategy to Synthesize Hollow Carbon Nanocage-Coated Copper Phosphide for Stable and High-Capacity Potassium-Ion Storage
	Tong, Huigang 1,2; Chen, Shi 1,2; Yang, Pengpeng 1,2; Wang, Changlai 1,2,3; Lu, Jian 1,2; Zeng, Xuehao 1,2; Tu, JinWei 1,2; Wang, Pengcheng 1,2; Cheng, Zhiyu 1,2; Chen, Qianwang 1,2,4
刊名	ACS APPLIED MATERIALS & INTERFACES
	2021-11-10
卷号	13
关键词	potassium-ion batteries hollow structure copper phosphide structural design volume expansion
ISSN号	1944-8244
DOI	10.1021/acsami.1c16641
通讯作者	Chen, Qianwang(cqw@ustc.edu.cn)
英文摘要	Metal phosphides with a high theoretical capacity and low redox potential have been proposed as promising anodes for potassium-ion batteries (PIBs). A reasonable configuration design and introduction of a hollow structure with adequate internal void spaces are effective strategies to overcome the volume expansion of metal phosphides in potassium-ion batteries. Herein, we report a cage-confinement pyrolysis strategy to obtain hollow nanocage-structured nitrogen/phosphorus dual-doped carboncoated copper phosphide (Cu3P/CuP2@NPC), which exhibits a high initial charge capacity (409 mA h g(-1) at 100 mA g(-1)) and an outstanding cycle performance (100 mA h g(-1) after 5000 cycles at 1000 mA g(-1)) as an anode material for PIBs. The novel hollow nanocage structure could prevent volume expansion during cycling and reduce the electron/ion diffusion distance. Besides, the nitrogen/phosphorus dual-doped carbon-coated layer could promote electronic conductivity. In situ X-ray diffraction (XRD) measurements are conducted to study the potassiation/depotassiation mechanism of Cu3P/CuP2@NPC and reveal the structure stability during the cycle process, which further proves that the design ideas of the conductive carbon layer and the hollow structure with adequate internal void spaces are successful.
资助项目	National Natural Science Foundation (NSFC)[51772283] ; National Key R&D 229 Program of China[2016YFA0401801] ; Hong Kong Scholars Program[XJ2019022] ; Fundamental Research Funds for the Central Universities[WK2060000032]
WOS关键词	METAL-ORGANIC FRAMEWORKS ; ELECTROCHEMICAL ENERGY-STORAGE ; BATTERY
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000718271300084
资助机构	National Natural Science Foundation (NSFC) ; National Key R&D 229 Program of China ; Hong Kong Scholars Program ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126736]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Qianwang
作者单位	1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China 3.City Univ Hong Kong, Dept Mat Sci & Engn, Ctr Super Diamond & Adv Films COSDAF, Kowloon, Hong Kong 999077, Peoples R China 4.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Tong, Huigang,Chen, Shi,Yang, Pengpeng,et al. Cage-Confinement Pyrolysis Strategy to Synthesize Hollow Carbon Nanocage-Coated Copper Phosphide for Stable and High-Capacity Potassium-Ion Storage[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13.
APA	Tong, Huigang.,Chen, Shi.,Yang, Pengpeng.,Wang, Changlai.,Lu, Jian.,...&Chen, Qianwang.(2021).Cage-Confinement Pyrolysis Strategy to Synthesize Hollow Carbon Nanocage-Coated Copper Phosphide for Stable and High-Capacity Potassium-Ion Storage.ACS APPLIED MATERIALS & INTERFACES,13.
MLA	Tong, Huigang,et al."Cage-Confinement Pyrolysis Strategy to Synthesize Hollow Carbon Nanocage-Coated Copper Phosphide for Stable and High-Capacity Potassium-Ion Storage".ACS APPLIED MATERIALS & INTERFACES 13(2021).