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 AT...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.展开更多
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)+3 种基金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)。
文摘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.
