Journal
CHEMICAL PHYSICS LETTERS
Volume 730, Issue -, Pages 198-205Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2019.06.010
Keywords
Silicon; Layered structure; Lithium-ion battery; Electrochemical properties
Funding
- Panasonic-NIMS Center of Excellence for Advanced Functional Materials
- NIMS microstructural characterization platform as a program of Nanotechnology Platform of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
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The structure fracture of silicon electrodes due to the volume change during Si-Li alloying reactions greatly hinders their practical applications. Herein a layered Si material (LSM) was prepared by a simple one-step topological reaction and used as an effective LIBs anode. The layered structure has abundant gaps and pores to accelerate ion transportation. Microstructure measurements demonstrate the formation of an amorphous lithiation product but not Si-Li alloys. As a result, the LSM anode shows higher specific capacity and a much better cycling performance than common bulk Si anode. Thus, the LSM could be alternative high-performance Si anode in LIBs.
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