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| Preparation and Properties of ZIF-67 In-situ Loaded Cellulose Nanofibril-based Separator for Lithium-ion Batteries |
| Received:March 08, 2024 |
| DOI：10.11980/j.issn.0254-508X.2024.05.009 |
| Key Words:acetylated cellulose nanofibril ZIF-67 separator lithium-ion batteries |
| 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）；特色木质纤维资源清洁高效分离与利用（2023GXNSFGA026001）。 |
| Author Name | Affiliation | Postcode | | 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 | | 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 | | CUI Jinghao | 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 | | GUO Binhui | 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 | | CHEN Siying | 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， cellulose nanofibril （CNF） was acetylated followed by in-situ loading of ZIF-67 and electrolyte impregnation to prepare a novel ZIF-67@acetylated cellulose nanofibril （ZIF-67@ACNF） separator for lithium-ion batteries. The effects of particle size of ZIF-67 on the structure and performance of the separator were systematically investigated. The results showed that as the particle size of ZIF-67 decreased from 0.46 μm （in ZIF-674@ACNF separator） to 0.25 μm （in the ZIF-678@ACNF separator）， the porosity of the separator reduced from 74.2% to 52.1%， the ionic conductivity decreased from 0.75 mS/cm to 0.22 mS/cm， the interfacial resistance increased from 112.5 Ω to 1 115.7 Ω， the lithium-ion transference number declined from 0.41 to 0.31， and the electrochemical stability window went down from 5.1 V to 4.5 V. The initial capacity of assembled cell by ZIF-674@ACNF separator reached 159.6 mAh/g with a capacity retention rate of 90% after 200 cycles at 0.5 C under room temperature. |
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