| 以腐殖酸为还原剂合成LiFePO_4/C的性能 |
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| 引用本文： | 周学酬,刘永梅,杨同欢,郭永榔.以腐殖酸为还原剂合成LiFePO_4/C的性能[J].电池,2009,39(2). |
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| 作者姓名： | 周学酬 刘永梅 杨同欢 郭永榔 |
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| 作者单位： | 福州大学化学化工学院,福建福州,350108 |
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| 摘 要： | 以Fe2O3为铁源、腐殖酸为还原剂和碳源,用一步固相法合成LiFePO4/C复合材料.在有机电解液中以1.0C充放电,合成的LiFePO4/C的首次放电比容量为127.1 mAh/g,第100次循环的放电比容量为118.7 mAh/g;在Li2SO4电解液中,LiFePO4/C能可逆地嵌脱锂,以3.0 G充放电,室温和-5℃时的首次放电比容量分别为119.5 mAh/g和57.5 mAh/g.
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| 关 键 词： | 腐殖酸 电化学性能 |
Performance of LiFePO_4/C synthesized with humic acid as reductant |
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| ZHOU Xue-chou,LIU Yong-mei,YANG Tong-huan,GUO Yong-lang.Performance of LiFePO_4/C synthesized with humic acid as reductant[J].Battery Bimonthly,2009,39(2). |
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| Authors: | ZHOU Xue-chou LIU Yong-mei YANG Tong-huan GUO Yong-lang |
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| Affiliation: | Chemistry and Chemical Engineering College;Fuzhou University;Fuzhou;Fujian 350108;China |
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| Abstract: | LiFePO4/C composite material was synthesized via a one-step solid-state reaction route,in which Fe2O3 used as Fe source and humic acid was used as reductant and carbon source.When charge-discharge at 1.0 C in organic electrolyte,the initial specific discharge capacity of the synthesized LiFePO4/C was 127.1 mAh/g,the specific discharge capacity was 118.7 mAh/g at the 100th cycle.LiFePO4/C could intercalate and de-intercalate Li reversibly in Li2SO4 electrolyte,when charge-discharge at 3.0 C,its initial speci... |
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| Keywords: | LiFePO4 Fe2O3 Li2SO4 |
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