Constructing Al@C-Sn pellet anode without passivation layer for lithium-ion battery

作     者：Kangzhe Cao Sitian Wang Yanan He Jiahui Ma Ziwei Yue Huiqiao Liu Kangzhe Cao;Sitian Wang;Yanan He;Jiahui Ma;Ziwei Yue;Huiqiao Liu

作者机构：College of Chemistry and Chemical EngineeringXinyang Normal UniversityXinyang 464000China Xinyang Key Laboratory of Low-Carbon Energy MaterialsXinyang 464000China Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of HenanXinyang 464000China 

基　　金：supported by the National Natural Science Foundation of China(No.62105277) the Natural Science Foundation of Henan Province(No.232300420139) the Internationalization Training of High-Level Talents of Henan Province,and Nanhu Scholars Program for Young Scholars of XYNU 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2024年第31卷第3期

页      码：552-561页

摘      要：Al is considered as a promising lithium-ion battery(LIBs)anode materials owing to its high theoretical capacity and appropri-ate lithation/de-lithation ***,its inevitable volume expansion causes the electrode structure instability,leading to poor cyclic ***’s worse,the natural Al2O3 layer on commercial Al pellets is always existed as a robust insulating barrier for elec-trons,which brings the voltage dip and results in low reversible ***,this work synthesized core-shell Al@C-Sn pellets for LIBs by a plus-minus *** this proposal,the natural Al2O3 passivation layer is eliminated when annealing the pre-introduced SnCl2,meanwhile,polydopamine-derived carbon is introduced as dual functional shell to liberate the fresh Al core from re-oxidization and alle-viate the volume *** from the addition of C-Sn shell and the elimination of the Al2O3 passivation layer,the as-prepared Al@C-Sn pellet electrode exhibits little voltage dip and delivers a reversible capacity of 1018.7 mAh·g^(-1) at 0.1 A·g^(-1) and 295.0 mAh·g^(-1) at 2.0 A·g^(-1)(after 1000 cycles),***,its diffusion-controlled capacity is muchly improved compared to those of its counterparts,confirming the well-designed nanostructure contributes to the rapid Li-ion diffusion and further enhances the lithium storage activity.

主 题 词：lithium-ion battery high-performance anode aluminum passivation layer plus-minus strategy 

学科分类：0819[工学-海洋工程类] 081704[081704] 0808[工学-自动化类] 0806[工学-电气类] 08[工学] 0817[工学-轻工类] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1007/s12613-023-2720-8

馆 藏 号：203126724...