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Exploring lithium ion storage ability and cycling performance of the Cu2SnSe4 nanoparticles encapsulated with nitrogen-doped carbon

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Abstract
Lithium-ion battery (LIB) is an essential energy storage device in numerous applications such as electronic devices and electric vehicles. Nevertheless, LIBs cannot meet some requirements, such as high energy and power density. To achieve these goals, the development of an electrode material with high capacity and fast kinetics is needed. Here, we report on Cu2SnSe4 nanoparticles embedded with N-doped carbon (Cu2SnSe4@N-C) as a new anode material. The cycling tests revealed that the Cu2SnSe4@N-C delivered a higher discharge capacity of 788.6 mAh g(-1) than the pristine Cu2SnSe4 (14.8 mAh g(-1)) after 100 cycles at 100 mA g(-1). It also exhibited a better long term cycling stability (365 mAh g(-1) after 200 cycles at 2000 mA g(-1)) and excellent rate performance at a high current density. Such a superior performance is associated with the surface coating of N-doped carbon on the Cu2SnSe4 nanoparticles. It can accommodate the volume strain during charge-discharge cycles and enhance ionic and electronic transport within the electrode material. The N-doped carbon can also act as a fence that strongly suppresses the dissolution of polyselenide into the electrolyte solution through strong chemical adsorption.
Author(s)
Ganesh Kumar VeerasubramaniSubramanian Yuvaraj류광선김동원
Issued Date
2021
Type
Article
Keyword
Binary metal selenidesCu2SnSe4Surface modificationNitrogen-doped carbonAnode materialLithium-ion battery
DOI
10.1016/j.apsusc.2020.148435
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9619
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_elsevier_sciencedirect_doi_10_1016_j_apsusc_2020_148435&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Exploring%20lithium%20ion%20storage%20ability%20and%20cycling%20performance%20of%20the%20Cu2SnSe4%20nanoparticles%20encapsulated%20with%20nitrogen-doped%20carbon&offset=0&pcAvailability=true
Publisher
APPLIED SURFACE SCIENCE
Location
네덜란드
Language
영어
ISSN
0169-4332
Citation Volume
540
Citation Number
2
Citation Start Page
14835
Citation End Page
14835
Appears in Collections:
Natural Science > Chemistry
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