Microwave‐Assisted Preparation and Characterization of a Polyoxometalate‐Based Inorganic 2D Framework Anode for Enhancing Lithium‐Ion Battery Performance |
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| Authors: | Yan‐Mei Nie Shuang Liang Wei‐Dong Yu Hao Yuan Prof. Jun Yan |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Central South University, Changsha, P. R. China;2. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, P. R. China |
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| Abstract: | A pure inorganic 2D network molybdophosphate, [Mn3Mo12O24(OH)6(HPO3)8(H2O)6]4? ( 1 a ), synthesized through microwave irradiation with the existence of Mn2+ and organic cations and isolated as [(CH3)2NH2]3Na[Mn3Mo12O24(OH)6(HPO3)8(H2O)6] ? 12 H2O ( 1 ), is found to possess highly enhanced performance in lithium‐ion batteries’ anode materials. The molecule shows multielectron redox properties suitable for producing anode materials with a specific capacity of 602 mA h g?1 at 100 mA g?1 after 50 cycles in lithium‐ion batteries, although its specific capacity is the highest among all the reported pure inorganic 2D polyoxometalates to date, the cyclic stability is not that satisfactory. A hybrid nanocomposite of this 2D network and polypyrrole cations effectively reduces the capacity fading in initial cycles, and increases the stability and improves the electrochemical performance of lithium‐ion batteries as well. |
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| Keywords: | anodes lithium-ion batteries microwave irradiation molybdophosphates nanocomposites |
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