Cellulose nanofibrils derived from pulp as a high performance separator for lithium-ion batteries

Hyeon Woo Cho, Ju Won Kim,Sharon Mugobera, Roseong Park,Jihyuk Jung,Jang Myoun Ko,Kwang Se Lee

SSRN Electronic Journal(2023)

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摘要
Cellulose nanofibrils (CNFs) from hardwood bleached kraft pulp (HwBKP) are produced via enzymatic, chemical, and mechanical treatment. A nanoporous structured CNF-based separator is produced, and the electrochemical performance, morphology, and thermal stability analyses are performed in comparison to the commercial polyethylene separator. The results obtained show that the electrolyte-philic CNF separator has capacity retention of 88.6% over 200 cycles and very good ionic conductivity and wettability results due to its high hydrophilic nature. At 140(circle)C, the CNF separator was resilient to heat and remained intact. The CNF separator reflects high thermal resistance and good electrolyte uptake properties that are among the mandatory requirements of a separator hence, a promising contender for use in lithium-ion batteries.
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cellulose,pulp,lithium‐ion,high performance separator,batteries
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