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Short-Process Multiscale Core-Shell Structure Buffer Control of a Ni/N Codoped Si@C Composite Using Waste Silicon Powder for Lithium-Ion Batteries
Liu, Junhao1,2,3,4; Lu, Jijun1,2,3; Wu, Jinlong1,3; Gong, Xuzhong1,2,3; Wang, Zhi1,2,3,4
2021-12-22
Source PublicationACS APPLIED ENERGY MATERIALS
ISSN2574-0962
Pages8
AbstractA huge amount of waste silicon powder produced in the solar energy silicon wafer production process causes resource wastage and environmental pollution. As a lithium-ion battery anode, silicon has received widespread attention because of its extremely high theoretical specific capacity, abundance in nature, and low discharge potential. However, the large volume expansion and huge internal stresses lead to instability of the solid-state interphase layer upon lithiation/delithiation; it is the problem that needs to be solved for actual application of silicon-based anodes. Here, based on the waste silicon powder from a photovoltaic silicon production process as the raw material, we propose a concept of short-process multiscale structure buffer control and prepare Ni-N codoped Si@C core-shell composites to solve the abovementioned problems. The preparation method is simple and nonpolluting and has positive significance for realizing industrialization. For structure, the Si particles are completely encapsulated by the nanoscale carbon shell, and the suitable elastic buffer carbon shell can accommodate Si expansion and the introduction of metallic nickel and N can improve the electrode material conductivity and utilize the metal ductility to buffer the silicon volume expansion during the process of charge/discharge. As a result, the Ni-N codoped sigc electrode shows a stable reversible specific capacity of 1001.5 mAh g(-1) at 0.5 A g(-1) after 450 cycles.
Keywordwaste silicon powder Ni-N codoping core-shell structure long cycling fast charge/discharge
DOI10.1021/acsaem.1c02725
Language英语
WOS KeywordENERGY-STORAGE ; PERFORMANCE ; ANODES ; NANOPARTICLES ; ELECTRODES ; GRAPHENE
Funding ProjectNational Key R&D Program of China[2018YFC1901801] ; National Natural Science Foundation of China[52074255] ; National Natural Science Foundation of China[U1702251] ; National Natural Science Foundation of China[51704271]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000736554100001
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51541
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhi
Affiliation1.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341119, Peoples R China
Recommended Citation
GB/T 7714
Liu, Junhao,Lu, Jijun,Wu, Jinlong,et al. Short-Process Multiscale Core-Shell Structure Buffer Control of a Ni/N Codoped Si@C Composite Using Waste Silicon Powder for Lithium-Ion Batteries[J]. ACS APPLIED ENERGY MATERIALS,2021:8.
APA Liu, Junhao,Lu, Jijun,Wu, Jinlong,Gong, Xuzhong,&Wang, Zhi.(2021).Short-Process Multiscale Core-Shell Structure Buffer Control of a Ni/N Codoped Si@C Composite Using Waste Silicon Powder for Lithium-Ion Batteries.ACS APPLIED ENERGY MATERIALS,8.
MLA Liu, Junhao,et al."Short-Process Multiscale Core-Shell Structure Buffer Control of a Ni/N Codoped Si@C Composite Using Waste Silicon Powder for Lithium-Ion Batteries".ACS APPLIED ENERGY MATERIALS (2021):8.
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