Lithium salt of carboxymethyl cellulose as an aqueous binder for thick graphite electrode in lithium ion batteries
- Title
- Lithium salt of carboxymethyl cellulose as an aqueous binder for thick graphite electrode in lithium ion batteries
- Author
- 백운규
- Keywords
- lithium salt of carboxymethyl cellulose; Li-CMC; water soluble binder; thick electrode; lithium ion batteries; LIBs
- Issue Date
- 2015-05
- Publisher
- POLYMER SOC KOREA
- Citation
- MACROMOLECULAR RESEARCH, v. 23, NO 8, Page. 719-725
- Abstract
- The increase in a graphite electrode thickness is an inevitable to achieve the high energy density of lithium ion batteries (LIBs). However, the increment of electrode thickness results in a significant degradation of the electrochemical performances due to a poor kinetic associated with lithium ion caused by a long lithium ion diffusion length and large polarization. To improve the kinetic associated with lithium ion, the lithium salt of carboxymethyl cellulose (Li-CMC) is introduced as a binder. The Li-CMC is synthesized from sodium salt of carboxymethyl cellulose (Na-CMC) via simple two-step method. The thick graphite electrode prepared with Li-CMC exhibits much improved electrochemical performances, including a specific capacity and a cycle performance, compared to that with Na-CMC. The voltage profiles, electrochemical impedance spectroscopy (EIS), and rate capabilities results indicate that these improvements are attributed to improved lithium ion kinetics and low polarization by employing Li-CMC binder.
- URI
- http://link.springer.com/article/10.1007%2Fs13233-015-3094-1http://hdl.handle.net/20.500.11754/24661
- ISSN
- 1598-5032; 2092-7673
- DOI
- 10.1007/s13233-015-3094-1
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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