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- Title
Aramid nanofiber reinforced cellulose paper for high-safety lithium-ion batteries.
- Authors
Pan, Jiao-Long; Zhang, Ze; Zhou, Mei-Ling; Wei, Jun-Chao; He, Wei-Dong; Yang, Zhen-Yu
- Abstract
Lithium dendrite growth greatly threaten the safety of lithium-ion batteries by piercing the separators. Fabricating a lithium-dendrite-suppressing separator with high mechanical strength, thermal stability and ionic conductivity features is a challenging work. Herein, aramid nanofibers (ANFs) is used as novel nanofiller to reinforce commercial cellulose paper via simple vacuum filtration method. The reinforced cellulose paper (ANF-CP) shows robust mechanical strength, super thermal stability and excellent electrolyte wettability and ionic conductivity, demonstrating its great potential as separators. The ANF-CP exhibits outstanding compatibility to lithium anode (voltage gap of ~ 4.0 mV upon 3000 h), which indicate the functions of homogeneous plating/stripping of lithium and demonstrate its lithium-dendrite-suppressing property. The LiFePO4/Li cells with ANF-CP separator exhibit a high discharge capacity of ~ 122.4 mAh g−1 at 5C with exceptional cycling stability. Besides, the mechanism and phenomenon of dendrite suppressing are also confirmed by DFT simulation calculation and the continuous charging and discharging experiments of LiFePO4/graphite full-cells. All the results demonstrate the ANF-CP may have great potential application in energy storage systems, and thus this work may promote the application of cellulose and aramid fibers.
- Subjects
ENERGY storage; LITHIUM-ion batteries; ARAMID fibers; IONIC conductivity; POTENTIAL energy; CORPORATE bonds; CELLULOSE; CYCLOPENTANE
- Publication
Cellulose, 2021, Vol 28, Issue 16, p10579
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-021-04173-2