Pre-lithiated carbon-coated Si/SiOx nanospheres as a negative electrode material for advanced lithium ion capacitors
- Authors
- Park, Eunjun; Chung, Dong Jae; Park, Min-Sik; Kim, Hansu
- Issue Date
- Nov-2019
- Publisher
- ELSEVIER
- Keywords
- Lithium ion capacitor; Si/SiOx; C-coated Si/SiOx nanospheres; Negative electrodes
- Citation
- JOURNAL OF POWER SOURCES, v.440, pp 1 - 7
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 440
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2125
- DOI
- 10.1016/j.jpowsour.2019.227094
- ISSN
- 0378-7753
1873-2755
- Abstract
- A high-performance lithium ion capacitor (LIC) composed of activated carbon (as the positive electrode) and pre-lithiated C-coated Si/SiOx nanospheres (as the negative electrode) is investigated as a potential energy storage system for high-power and high-energy applications. Under optimized pre-lithiation conditions, the feasibility of pre-lithiated C-coated Si/SiOx nanospheres is thoroughly examined as an advanced negative electrode compared with a conventional graphite LIC using pre-lithiated C-coated Si/SiOx nanospheres. The pre-lithiated C-coated Si/SiOx nanospheres show much improved reversible capacity and rate capability with higher capacity retention at a high current density of 10C up to 1000 cycles compared with a conventional LIC. Such improvements may be attributed to the unique physical and chemical properties of C-coated Si/SiOx nanospheres. We believe that this approach provides a practical guideline for developing and successfully implementing advanced LICs.
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