Chloride molten salt derived attapulgite with ground-breaking electrochemical performance  

作　　者：Kailong Zhang Chao Zhang Luanhui Wu Qidong Yang Jiadong Zhang Guang Hu Liang Song Gaoran Li Wenlong Cai 

机构地区：[1]School of Chemical Engineering,Huaiyin Institute of Technology,Huaian 223003,China [2]School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [3]College of Materials Science and Engineering,Sichuan University,Chengdu 610064,China

出　　处：《Chinese Chemical Letters》2024年第10期437-441,共5页中国化学快报（英文版）

基　　金：supported by the Natural Science Foundation of the Higher Education Institutions of Jiangsu Province(No.22KJB510014);the Research Start-up Fund of Huaiyin Institute of Technology(No.Z301B20514);Foundation of Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province(Nos.HPK202102,HPK202303,HPZ202201);Open Project Foundation of National&Local Joint Engineering Research Center for Mineral Salt Deep Utilization(No.SF202306);Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.SJCX23_1851);Huaian Talent Funding for Outstanding Doctors in Universities(Nos.Z302J22517,Z302J22518)。

摘　　要：The existence of adsorbed water and structural water in the crystal structure of attapulgite(ATP)endows it with poor capability to store lithium ions.Herein,the chloride molten salt method was developed to function ATP materials based on theoretical calculations,which exhibit ground-breaking electrochemical performance.After the modification process,the metal ions in chloride molten salt occupy the vertices of the Mg-O octahedral structure from the liberation of structural water and hydroxyl groups in ATP,forming MaMgbAlcSixOy(M=Li,Na,or K).Using Li Cl molten salt-modified ATP(Li-ATP)as a proof-of-concept,the detailed phase transition,physicochemical properties,and lithium storage capacity were investigated.Compared to the original ATP,Li-ATP achieves a nearly 7-fold increase in lithium storage capacity(498mAh/g),featuring a promising low-cost polyanionic type anode material.

关 键 词：Molten salt modification ATTAPULGITE PHASETRANSITION Electrochemical performance ANODE 

分 类 号：TM912[电气工程—电力电子与电力传动] TB34[一般工业技术—材料科学与工程]