Journal
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
Volume 31, Issue 4, Pages 567-574Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.pnsc.2021.06.007
Keywords
Plasma-assisted ball milling; SeP2/C anode; Amorphous structure; LIBs; SIBs
Funding
- National Key R&D Pro-gram of China [2018YFB15-02100]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [NSFC51621001]
- National Natural Science Foundation of China Projects [51771075]
- Science and Technology Development Fund, Macau SAR [FDCT 0062/2018/A2, MYRG2019-00055-IAPME]
- University of Macau
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The SeP2/C composite synthesized by plasma-assisted milling method shows excellent lithium and sodium storage performances, with fast ion transfer kinetics and volume expansion inhibition mechanism, indicating great potential as a new type of anode material.
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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