Synthesis of Carboxymethyl Cellulose Lithium by Weak Acid Treatment and Its Application in High Energy-Density Graphite Anode for Li-Ion Batteries
- Authors
- Park, Hyunjung; Lee, Dongsoo; Song, Taeseup
- Issue Date
- Jul-2018
- Publisher
- AMER CHEMICAL SOC
- Citation
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.57, no.27, pp 8895 - 8901
- Pages
- 7
- Journal Title
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
- Volume
- 57
- Number
- 27
- Start Page
- 8895
- End Page
- 8901
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/90187
- DOI
- 10.1021/acs.iecr.8b00851
- ISSN
- 0888-5885
1520-5045
- Abstract
- Carboxymethyl cellulose lithium (CMC-Li) has recently been explored as a promising binder for Li-ion batteries because of enhanced Li+ ion flux. CMC-Li has been generally prepared by CMC acid form (CMC-H) as an intermediate product treated with a strong acid, which considerably causes a polymer degradation. Here, we report a synthesis method of CMC-Li through the use of a weak acid (acetic acid) and its application in a high energy-density graphite anode. CMC-Li synthesized by acetic acid (CMC-Li (A)) exhibits enhanced physicochemical properties including an appropriate viscosity of, similar to 3000 mPa.s at a shear rate of 10 s(-1), good slurry stability, and strong adhesion force of 1.4 gf/mm compared to those of CMC-Li synthesized by hydrochloric acid. The high energy-density graphite anode prepared with CMC-Li (A) shows higher charge/discharge capacities and capacity retentions in various rates of 0.05-2 C than those of the electrode prepared with CMC-Na that might be due to the enhanced Li+ ion flux upon cycling.
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