Synthesis of amorphous SeP2/C composite by plasma assisted ball milling for high-performance anode materials of lithium and sodium-ion batteries |
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| Affiliation: | 1. School of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, Guangzhou, 510641, China;2. China-Australia Joint Laboratory for Energy & Environmental Materials, Key Laboratory of Fuel Cell Technology of Guangdong Province, Guangzhou, 510641, China;3. Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering (IAPME), Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macau, SAR, China |
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| Abstract: | To promote substantially the performances of red phosphorous (P) anode for lithium and sodium-ion batteries, a simple plasma assisted milling (P-milling) method was used to in-situ synthesize SeP2/C composite. The results showed that the amorphous SeP2/C composite exhibits the excellent lithium and sodium storage performances duo to the small nano-granules size and complete combination of selenium (Se) and phosphorous (P) to generate Se–P alloy phase. It was observed that inside the granules of SeP2/C composite the nanometer size of the SeP2 particles ensured the fast kinetics for Li+ and Na+ transfer, and the amorphous carbon wrapping the SeP2 particles relieved volume expansion during lithium/sodium storage processes and enhances electric conductivity. Therefore, the SeP2/C electrode retained reversible capacities of 700 mA h g−1 at 2 A g−1 after 500 cycles and 400 mA h g−1 at 0.5 A g−1 after 400 cycles as anode for LIBs and SIBs, respectively. The result proves that the amorphous SeP2/C composite can be a new type of anode material with great potential for lithium and sodium-ion batteries. |
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| Keywords: | Plasma-assisted ball milling Amorphous structure LIBs SIBs |
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