| CRYSTAL STRUCTURE OF γ-Li_xFe_2O_3 WITH ELECTROCHEMICAL INSERTION OF Li |
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| 作者姓名： | HUANG Jianshun CHEN Junming Shanghai Institute of Metallurgy Academia Sinica Shanghai China Research Associate Shanghai Institute of Metallurgy Academia Sinica Shanghai China |
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| 作者单位： | HUANG Jianshun CHEN Junming Shanghai Institute of Metallurgy，Academia Sinica，Shanghai，China Research Associate，Shanghai Institute of Metallurgy，Academia Sinica，Shanghai 200050，China |
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| 摘 要： | 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.
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| 关 键 词： | crystal structure γ-Li_xFe_2O_3 Li battery Mossbauer spectroscopy |
| 收稿时间： | 1993-07-11 |
| 修稿时间： | 1993-07-11 |
CRYSTAL STRUCTURE OF γ-Li_xFe_2O_3 WITH ELECTROCHEMICAL INSERTION OF Li |
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| HUANG Jianshun CHEN Junming Shanghai Institute of Metallurgy,Academia Sinica,Shanghai,China Research Associate,Shanghai Institute of Metallurgy,Academia Sinica,Shanghai ,China.CRYSTAL STRUCTURE OF γ-Li_xFe_2O_3 WITH ELECTROCHEMICAL INSERTION OF Li[J].Acta Metallurgica Sinica(English Letters),1993,6(7):69-75. |
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| Authors: | HUANG Jianshun CHEN Junming |
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| Affiliation: | HUANG Jianshun CHEN Junming Shanghai Institute of Metallurgy,Academia Sinica,Shanghai,China Research Associate,Shanghai Institute of Metallurgy,Academia Sinica,Shanghai,China |
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| Abstract: | 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,On the 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 limitation of Li~+ ions inserted were discussed. |
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| Keywords: | crystal structure γ-Li_xFe_2O_3 Li battery Mossbauer spectroscopy |
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