Direct Pyrolysis of Molybdophosphate-based Ionic Salt for One-step Synthesis of N,P Co-doped Carbon/MoO3-x Hybrids with Superior Lithium Storage Performance |
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| Authors: | ZHANG Lifeng SHEN Kechao JIANG Yongtao GUO Yu LIU Yi GUO Shouwu |
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| Institution: | 1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China;2. Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China;3. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China |
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| Abstract: | N, P co-doped carbon/MoO3-x hybrids(NPC/MoO3-x) were synthesized via one-step pyrolysis of molybdophosphate-based ionic salt precursor. Doped carbon and oxygen vacancies(OVs) were synchronously introduced into the NPC/MoO3-x hybrids without any other redundant procedure. As anodes for lithium-ion batteries, the NPC/MoO3-x hybrids delivered a high initial Coulombic efficiency(ICE) of 81% as well as high charge capacity of 516 mA·h/g after 100 cycles at 1 A/g, indicating the excellent reversibility and rate capability. The enhanced lithium storage performance was attributed to the rational combination of surface engineering and OVs, which is beneficial to the more active sites and fast ionic/electronic transport. |
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| Keywords: | Lithium ion battery Anode Molybdenum oxide Doped carbon Oxygen vacancy |
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