Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material
We investigated the charge/discharge properties, valence states, and structural properties of a nanoporous cathode material LixMn[Fe(CN)6]0.83·3.5H2O. The film-type electrode of LixMn[Fe(CN)6]0.83·3.5H2O exhibited a high charge capacity (=128 mAh g-1) and a good cyclability (87% of the initial value...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2012/568147 |
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| author | Tomoyuki Matsuda Yutaka Moritomo |
| author_facet | Tomoyuki Matsuda Yutaka Moritomo |
| author_sort | Tomoyuki Matsuda |
| collection | DOAJ |
| description | We investigated the charge/discharge properties, valence states, and structural properties of a nanoporous cathode material LixMn[Fe(CN)6]0.83·3.5H2O. The film-type electrode of LixMn[Fe(CN)6]0.83·3.5H2O exhibited a high charge capacity (=128 mAh g-1) and a good cyclability (87% of the initial value after 100 cycles) and is one of the promising candidates for Li-ion battery cathode. X-ray absorption spectra near the Fe and Mn K-edges revealed that the charge/discharge process is a two-electron reaction; that is, MnII–NC–FeII, MnII–NC–FeIII, and MnIII–NC–FeIII. We further found that the crystal structure remains cubic throughout the charge/discharge process. The lattice constant slightly increased during the [FeII(CN)6]4-/[FeIII(CN)6]3- oxidization reaction while decreased during the MnII/MnIII oxidization reaction. The two-electron reaction without structural phase transition is responsible for the high charge capacity and the good cyclability. |
| format | Article |
| id | doaj-art-6cbb34415908487ab0d87754d93d7edc |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-6cbb34415908487ab0d87754d93d7edc2025-02-03T05:47:16ZengWileyJournal of Nanotechnology1687-95031687-95112012-01-01201210.1155/2012/568147568147Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode MaterialTomoyuki Matsuda0Yutaka Moritomo1Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8571, JapanGraduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8571, JapanWe investigated the charge/discharge properties, valence states, and structural properties of a nanoporous cathode material LixMn[Fe(CN)6]0.83·3.5H2O. The film-type electrode of LixMn[Fe(CN)6]0.83·3.5H2O exhibited a high charge capacity (=128 mAh g-1) and a good cyclability (87% of the initial value after 100 cycles) and is one of the promising candidates for Li-ion battery cathode. X-ray absorption spectra near the Fe and Mn K-edges revealed that the charge/discharge process is a two-electron reaction; that is, MnII–NC–FeII, MnII–NC–FeIII, and MnIII–NC–FeIII. We further found that the crystal structure remains cubic throughout the charge/discharge process. The lattice constant slightly increased during the [FeII(CN)6]4-/[FeIII(CN)6]3- oxidization reaction while decreased during the MnII/MnIII oxidization reaction. The two-electron reaction without structural phase transition is responsible for the high charge capacity and the good cyclability.http://dx.doi.org/10.1155/2012/568147 |
| spellingShingle | Tomoyuki Matsuda Yutaka Moritomo Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material Journal of Nanotechnology |
| title | Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material |
| title_full | Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material |
| title_fullStr | Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material |
| title_full_unstemmed | Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material |
| title_short | Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material |
| title_sort | two electron reaction without structural phase transition in nanoporous cathode material |
| url | http://dx.doi.org/10.1155/2012/568147 |
| work_keys_str_mv | AT tomoyukimatsuda twoelectronreactionwithoutstructuralphasetransitioninnanoporouscathodematerial AT yutakamoritomo twoelectronreactionwithoutstructuralphasetransitioninnanoporouscathodematerial |