Regeneration of photovoltaic industry silicon waste toward high-performance lithium-ion battery anode

作     者：Kai Wang Xiao-Bin Zhong Yue-Xian Song Yao-Hui Zhang Yan-Gang Zhang Xiao-Gang You Pu-Guang Ji Kurbanov Mirtemir Shodievich Umedjon Khalilov Gong-Kai Wang Xin Zhang Xing-Liang Yao Feng Li Jun-Fei Liang Hua Wang Kai Wang;Xiao-Bin Zhong;Yue-Xian Song;Yao-Hui Zhang;Yan-Gang Zhang;Xiao-Gang You;Pu-Guang Ji;Kurbanov Mirtemir Shodievich;Umedjon Khalilov;Gong-Kai Waang;Xin Zhang;Xing-Liang Yao;Feng Li;Jun-Fei Liang;Hua Wang

作者机构：School of Energy and Power EngineeringNorth University of ChinaTaiyuan 030051China Zhongyuan Critical Metals LaboratoryZhengzhou UniversityZhengzhou 450001China Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologySchool of Material Science and EngineeringHebei University of TechnologyTianjin 300130China Arifov Institute of Ion-Plasma and Laser TechnologiesAcademyof Sciences of theRepublic of Uzbekistan100077 TashkentUzbekistan New Uzbekistan University100007 TashkentUzbekistan Arifov Institute of Ion-Plasma and Laser TechnologiesAcademy of Sciences of Uzbekistan100125 TashkentUzbekistan University of Antwerp2610 AntwerpBelgium School of ChemistryBeihang UniversityBeijing 100191China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2024年第43卷第10期

页      面：4948-4960页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：financially supported by the International Cooperation Project of National Key Research and Development Program of China(No.2022YFE0126300) the National Science Foundation of Shanxi Province(Nos.202103021223175,202103021223197,202103021223204 and 20210302124097) the National Natural Science Foundation of China(Nos.21905239,22102157 and 52004051) the Fundamental Research Program of Shanxi Province(Nos.202303021211144 and 202303021221112) the Project of Zhongyuan Critical Metals Laboratory(No.GJJSGFYQ202321) 

主　　题：Sawing silicon waste In situ encapsulation Aluminum/nitrogen co-doped Porous carbon nanowires Lithium-ion batteries 

摘      要：The diamond-wire sawing silicon waste(DWSSW)from the photovoltaic industry has been widely considered as a low-cost raw material for lithium-ion battery silicon-based electrode,but the effect mechanism of impurities presents in DWSSW on lithium storage performance is still not well understood;meanwhile,it is urgent to develop a strategy for changing DWSSW particles into high-performance electrode *** this work,the occurrence state of impurities presents in DWSSW was carefully analyzed using in situ Ar ion etching technology Then,the novel Si@C@SiO_(x)@PAl-NDC composite was designed through in situ encapsulation *** obtained Si@C@SiO_(x)@PAl-NDC electrode shows a high first capacity of 2343.4 mAh·g^(-1)with an initial Coulombic efficiency(ICE)of 84.4%under current density of 1.0 A·g^(-1),and can deliver an impressive capacity of 984.9 mAh·g^(-1)after 200 *** numerical simulation modeling calculations,the increase in proportion of Si^(4+)/Si^(0)and Si^(3+)/Si^(0)valence states in SiO_(x)layer leads to a decrease in von Mises stress,which ultimately improves the cycling structural ***,the porous 2D-3D aluminum/nitrogen(Al/N)co-doped carbon layer and nanowires on SiO_(x)layer can provide abundant active sites for lithium storage due to its developed hierarchical pores structure,which facilitates ion transport What is more,the performance of Si@C@SiO_(x)@PAl-NDC//LiFePO_(4)full cell shows its great potential in practical application.