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Journal Article
Alkali Metal Ion Substituted Carboxymethyl Cellulose as Anode Polymeric Binders for Rapidly Chargeable Lithium-Ion Batteries
- Authors
- Seoungwoo Byun, Zhu Liu, Dong Ok Shin, Kyuman Kim, Jaecheol Choi, Youngjoon Roh, Dahee Jin, Seungwon Jung, Kyung-Geun Kim, Young-Gi Lee, Stefan Ringe, Yong Min Lee
- Issue Date
- 2024-01
- Citation
- Energy & Environmental Materials, v.7, no.1, pp.1-16
- ISSN
- 2575-0356
- Publisher
- Wiley
- Language
- English
- Type
- Journal Article
- Abstract
- The increasing demand for short charging time on electric vehicles has motivated realization of fast chargeable lithium-ion batteries (LIBs). However, shortening charging time of LIBs is limited by Li+ intercalation process consisting of liquid-phase diffusion, de-solvation, SEI crossing, and solid-phase diffusion. Herein, we propose a new strategy to accelerate de-solvation step through control of interaction between polymeric binder and solvent-Li+ complexes. For this purpose, three alkali metal ions (Li+, Na+, and K+) substituted carboxymethyl cellulose (Li-, Na-, and K-CMC) are prepared to examine the effects of metal ions on their performance. The lowest activation energy of de-solvation and the highest chemical diffusion coefficient were observed for Li-CMC. Specifically, Li-CMC cell with a capacity of 3 mAh cm-2 could be charged to >95% in 10 min, while a value above >85% was observed after 150 cycles. Thus, the presented approach holds great promise for the realization of fast charging.
- KSP Keywords
- Activation Energy, Alkali metal ions, Carboxymethyl cellulose, Charging time, Chemical diffusion coefficient, Diffusion coefficient(D0), Fast Charging, Intercalation process, Ion batteries, Lithium-ion batteries(LIBs), New strategy
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
