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Preparation and Properties of Wood-based Gel Polymer Electrolyte
Received:April 13, 2023  
DOI：10.11980/j.issn.0254-508X.2023.05.011
Key Words:balsa wood  gel polymer electrolyte  lithium-ion battery  electrochemical properties
Fund Project:广西青年科学基金项目（2018GXNSFBA138027）；广西高校中青年教师基础能力提升项目（2018KY0023）；广西高等学校千名中青年骨干教师培育计划项目；广西大学科研基金项目（学术骨干项目）（XGZ170232）；广西壮族自治区级大学生创新创业训练项目（202110593256）。
Author NameAffiliationPostcode
CHEN Zhuoling College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
XU Yonglin College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
LI Zerong College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
LI Zhenghao College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
HUANG Qiaoling College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
LI Wei* College of Light Industry and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
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Abstract:In this study， balsa wood was used to prepare a novel wood-based gel polymer electrolyte （GPE） via alkali treatment， bleaching， acetylation， hot-pressing， and immersion of liquid electrolyte. The results showed that the crystallinity， mechanical strength， and thermal stability of hot-pressed modified wood was 54.7%， 2.16 MPa， and 300 ℃， respectively. After immersion of liquid electrolyte， the porosity and electrolyte uptake of modified wood were 74.6% and 719.0%， respectively， which were consistent with that before hot-pressing. Furthermore， the wood-based GPE exhibited good ionic conductivity （3.68 mS/cm） and wide electrochemical stability window （5.0 V）. The capacity of assembled Li/GPE/LiFePO4 lithium-ion battery decayed from 150.9 mAh/g to 146.1 mAh/g at a rate of 0.5 C after 100 cycles. However， due to the large pore size of the wood-based gel polymer electrolyte， the coulombic efficiency of the assembled lithium-ion battery was only 91%.
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