首页|Heterostructured Co3Se4/CoSe2@C nanoparticles attached on three-dimensional reduced graphene oxide as a promising anode towards Li-ion batteries

Heterostructured Co3Se4/CoSe2@C nanoparticles attached on three-dimensional reduced graphene oxide as a promising anode towards Li-ion batteries

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In situ carbon-coated Co3Se4/CoSe2(CoxSey)nanoparticles(NPs)attached on three-dimensional(3D)reduced graphene oxide(rGO)sheets were skillfully developed in this work,which involved the environment-friendly hydrothermal method,freeze drying,and selenide calcination.Within the structure,the glucose-derived carbon layer exhibited significantly homogeneous dispersion under an argon environment.This structure not only has enhanced stability,but also can effectively mitigate the volume swell of CoxSey particles.The resulted Co3Se4/CoSe2@C/rGO(CSe@C/rGO)exhibited a specific surface area(SSA)of 240.9 m2·g-1,offering more electrochemically active sites for the storage of energy related to lithium ions.The rGO matrix held exceptional flexibility and functional structural rigidity,facilitating the swift ion intercalation and ensuring the high conductivity and recyclability of the structure.When applied to anodes designed for lithium-ion batteries(LIBs),this material demonstrated distinguished rate and ultra-high reversible capacity(872.98 mA·h·g-1 at 0.5 A·g-1).Meanwhile,its capacity retention reached 119.5％after 500 cycles at 2 A·g-1,with a coulombic efficiency of 100％.This work potentially paves the way for generating fast and powerful metal selenide anodes and initiating LIBs with good performance.

CSe@C/rGOlithium-ion batteryreduced graphene oxideelectrochemical performanceheterostructure

Mingjun Pang、Zhaoyang Song、Miaomiao Mao、Shang Jiang、Ruxia Zhang、Runwei Wang、Jianguo Zhao

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Engineering Research Center of Coal-Based Ecological Carbon Sequestration Technology of the Ministry of Education,Shanxi Datong University,Datong 037009,China

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China

National Natural Science Foundation of ChinaBasic Research Project Fund of Shanxi ProvinceBasic Research Project Fund of Shanxi ProvinceKey Research and Development Project of DatongBasic Research Project Fund of Shanxi Datong UniversityBasic Research Project Fund of Shanxi Datong UniversityGraduate Education Reform project of Shanxi Datong UniversityScientific and Technological Innovation Programs of Higher Education Institutions in ShanxiGraduate Student Education Innovation Project of Shanxi Datong UniversityGraduate Student Education Innovation Project of Shanxi Datong UniversityGraduate Student Education Innovation Project of Shanxi Datong UniversityDoctoral Research Fund of Shanxi Datong UniversityDoctoral Research Fund of Shanxi Datong UniversityDoctoral Research Fund of Shanxi Datong University

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2024

10.1007/s11706-024-0688-6

材料学前沿
高等教育出版社

材料学前沿

CSTPCD
影响因子：0.337
ISSN：2095-025X
年,卷(期)：2024.18(2)