Affiliation:
1. Department of Applied Chemistry and Biotechnology Hanbat National University Daejeon Republic of Korea
2. Department of Materials Science and Engineering Korea University Seoul Republic of Korea
3. ESYNDMT Busan Republic of Korea
4. Department of Advanced Materials and Chemical Engineering Kyungnam College of Information and Technology Busan Republic of Korea
Abstract
AbstractCellulose 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°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.