Confining ultrafine Li3P nanoclusters in porous carbon for highperformance lithium-ion battery anode

作     者：Eryang Mao Wenyu Wang Mintao Wan Li Wang Xiangming He Yongming Sun Eryang Mao;Wenyu Wang;Mintao Wan;Li Wang;Xiangming He;Yongming Sun

作者机构：Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2020年第13卷第4期

页      面：1122-1126页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China(No.51802105)and Innovation Fund of Wuhan National Laboratory for Optoelectronics.E.M.acknowledges support from the Fundamental Research Funds for the Central Universities(HUST:2019JYCXJJ014).The authors would like to thank the Analytical and Testing Center of Huazhong University of Science and Technology as well as the Center for Nanoscale Characterization&Devices of Wuhan National Laboratory for Optoelectronics for providing the facilities to conduct the characterization. 

主　　题：Li3P nanoclusters porous carbon lithium-containing anode high capacity lithium-ion batteries 

摘      要：High-capacity lithium-containing alloy anodes(e.g.,Li4.4Si,Li4.4Sn,and Li3P)enable lithium-free cathodes(e.g.,Sulfur,V2O5,and FeF3)to produce next-generation lithium-ion batteries(LIBs)with high energy density.Herein,we design a Li3P/C nanocomposite with Li3P ultrafine nanodomains embedded in micrometer-scale porous carbon particles.Benefiting from the unique micro/nanostructure of the Li3P/C nanocomposite,electrons transfer rapidly through the conductive pathway provided by the porous carbon framework and the volume change between Li3P and P is confined in the nanopores of the carbon,which avoids the collapse of the whole Li3P/C composite particles.As expected,the as-achieved Li3P/C nanocomposite provided a high available lithium-ion capacity of 791 mAh/g(calculated based on the mass of Li3P/C)at 0.1 C during the initial delithiation process.Meanwhile,the Li3P/C nanocomposite showed 75%of its 0.5 C capacity at 6 C and stable cycling stability.