阳极
材料科学
法拉第效率
石墨烯
锂(药物)
硅
电极
化学工程
纳米技术
扩散
离子
光电子学
化学
物理化学
有机化学
医学
物理
工程类
内分泌学
热力学
作者
Qiang Li,Mingzhu Li,Yao Wang,Baoyang Liu,Xuli Ding
标识
DOI:10.1002/adsu.202400122
摘要
Abstract Silicon oxides (SiO, SiO 2 ) with high theoretical capacity and low cost are viewed as promising anodes for the next‐generation lithium‐ion batteries (LIBs) but suffer from inferior rate capability and coulombic efficiency (CE) owing to the sluggish charge transfer kinetics. Herein, the study proposes a multichannel modulation strategy induced by ZSM‐5 and SiO as well as electron‐rich graphene to effectively solve the above issue. Specially, the ZSM‐5, which can not only provide a certain Li + reserve capacity as an anode material, but also serve as a bridge to connect the isolated SiO nanoparticles, providing Li + transport channel and adjusting the transfer kinetic, making it to achieve two things at one stroke, so that the as‐obtained SiO@ZSM@Gra composite shows improved rate performance and CE compared to that of single silicon oxides. Combing with the CV and EIS fitting analysis, it is demonstrated that the constructed composites own higher Li + diffusion coefficient and more charge conduction capability. Furthermore, the fabricated full cell with LiNi 0.8 Co 0.1 Mn 0.1 O 2 exhibits good electro‐chemical properties. The proposed strategy for intrinsic accelerating charge transfer can be conductive to electrode design for the next‐generation low cost and high energy LIBs.
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