Microwave-Assisted Preparation and Characterization of a Polyoxometalate-Based Inorganic 2D Framework Anode for Enhancing Lithium-Ion Battery Performance

作者：Nie, Yan-Mei; Liang, Shuang; Yu, Wei-Dong; Yuan, Hao; Yan, Jun^*

来源：Chemistry-An Asian Journal, 2018, 13(9): 1199-1205.

DOI：10.1002/asia.201800070

• anodes
• lithium-ion batteries
• microwave irradiation
• molybdophosphates
• nanocomposites

A pure inorganic 2D network molybdophosphate, [Mn3Mo12O24(OH)(6)(HPO3)(8)(H2O)(6)](4-) (1a), synthesized through microwave irradiation with the existence of Mn2+ and organic cations and isolated as [(CH3)(2)NH2](3)Na[Mn3Mo12O24(OH)(6)(HPO3)(8)(H2O)(6)]12H(2)O (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 602mAhg(-1) at 100mAg(-1) after 50cycles 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.

• 出版日期2018-5-4
• 单位中南大学