In Situ Cross-linked Carboxymethyl Cellulose-Polyethylene Glycol Binder for Improving the Long-Term Cycle Life of Silicon Anodes in Li Ion Batteries
- Title
- In Situ Cross-linked Carboxymethyl Cellulose-Polyethylene Glycol Binder for Improving the Long-Term Cycle Life of Silicon Anodes in Li Ion Batteries
- Author
- 송태섭
- Keywords
- SOLID-ELECTROLYTE INTERPHASE; CONDUCTIVE POLYMER BINDER; STYRENE-BUTADIENE RUBBER; NEGATIVE ELECTRODES; LITHIUM; PERFORMANCE; HYDROGELS; DESIGN
- Issue Date
- 2019-05
- Publisher
- AMER CHEMICAL SOC
- Citation
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v. 58, NO 19, Page. 8123-8130
- Abstract
- To increase the energy density of Li-ion batteries (LIBs), silicon has been widely studied due to its relative abundance and high theoretical specific capacity (similar to 3572 mAh g(-1)). However, silicon experiences drastic volume changes up to 300% associated with Li. Here, we report an in situ cross-linked carboxymethyl cellulose-polyethylene glycol (CMC-PEG) binder and its application to the silicon anode to improve cycle life. Through in situ cross linking during the electrode drying process, the cross-linked CMC-PEG binder is simply prepared without an additional process. In particular, the cross-linked CMC-PEG binder is effective in enhancing cohesion between active materials and adhesion between active materials and a current collector. The silicon anode with the cross-linked CMC-PEG binder shows stable cycling performance with a capacity of similar to 2000 mAh g(-1) up to 350 cycles at 0.5 C. In terms of simplicity, this binder has potential to be used for silicon anodes and other electrodes experiencing volume expansion during cycling.
- URI
- https://pubs.acs.org/doi/10.1021/acs.iecr.9b00870https://repository.hanyang.ac.kr/handle/20.500.11754/111409
- ISSN
- 0888-5885
- DOI
- 10.1021/acs.iecr.9b00870
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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