CRYSTAL STRUCTURE OF γ-Li_xFe_2O_3 WITH ELECTROCHEMICAL INSERTION OF Li

• 出 处: Acta Metallurgica Sinica(English Edition)
• 发表日期: 1993年07期
• 关键词: inserted ferrous insertion violent rock spinel keeping battery lithium annealing

Crystal structure of γ-Li_xFe_2O_3,inserted Li electrochemically,was studied by Moss-bauer spectroscopy together with X-ray diffraction,XPS and electrochemical method,Onthe insertion of Li at low current density,the crystal structure is keeping original spinel;while at higher current density or by thermal activation,owing to violent movement ofLi~+ ions,part of crystal structure transforms into rock type similar to face-centeredcubic structure of ferrous oxide.The transition channels during insertion of Li~+ ions andlimitation of Li~+ ions inserted were discussed.

Crystal structure of γ-Li_xFe_2O_3, inserted Li electrochemically, was studied by Moss-bauer spectroscopy together with X-ray diffraction, XPS and electrochemical method, Onthe insertion of Li at low current density, the crystal structure is keeping original spinel; while at higher current density or by thermal activation, owing to violent movement of Li ~ + ions, part of crystal structure transforms into rock type similar to face-centered cubic structure of ferrous oxide. The transition channels during insertion of Li ~ + ions and limit of Li ~ ions inserted were discussed.