OXIDATION OF Fe–W ALLOY ELECTRODEPOSITS FOR APPLICATION TO ANODES AS LITHIUM ION BATTERIES

Changwei Su, Mengchao Ye, Linxing Zhon, Jianping Hou, Junmin Li and Junming Guo
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Changwei Su: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, D-306, Guang Jing Compound, Kunming, Yunnan 650500, P. R. China2The Engineering Laboratory of Polylactic Acid-Based, Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650500, P. R. China
Mengchao Ye: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, D-306, Guang Jing Compound, Kunming, Yunnan 650500, P. R. China2The Engineering Laboratory of Polylactic Acid-Based, Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650500, P. R. China
Linxing Zhon: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, D-306, Guang Jing Compound, Kunming, Yunnan 650500, P. R. China2The Engineering Laboratory of Polylactic Acid-Based, Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650500, P. R. China
Jianping Hou: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, D-306, Guang Jing Compound, Kunming, Yunnan 650500, P. R. China2The Engineering Laboratory of Polylactic Acid-Based, Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650500, P. R. China
Junmin Li: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, D-306, Guang Jing Compound, Kunming, Yunnan 650500, P. R. China2The Engineering Laboratory of Polylactic Acid-Based, Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650500, P. R. China
Junming Guo: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, D-306, Guang Jing Compound, Kunming, Yunnan 650500, P. R. China2The Engineering Laboratory of Polylactic Acid-Based, Functional Materials of Yunnan, School of Chemistry and Biotechnology, Yunnan Minzu University, Kunming 650500, P. R. China

Surface Review and Letters (SRL), 2016, vol. 23, issue 02, 1-7

Abstract: A citrate–ammonia bath was selected to electrodeposit Fe–W alloys, which exhibit a crystalline structure even if the content of W in the Fe–W alloy is up to 37.8wt%. Those alloys could be oxidized partly at 700∘C. Resultant oxides were composed of Fe2O3, Fe3O4 and amorphous products. The composite oxides presented better electrochemical properties than those of the Fe2O3 and Fe3O4 composite formed by oxidation of Fe deposits. For instance, such an electrode demonstrates the reversible capacity of up to 2438.3mAhg−1 (in terms of incremental oxygen) after 100 charge–discharge cycles, while the electrodes of Fe2O3 and Fe3O4 composites formed by oxidation of Fe deposits were of only 667.5mAhg−1.

Keywords: Fe–W alloy; electrodeposition; oxidation; lithium ion batteries (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1142/S0218625X15501000

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