Highly Thermally Stable, Highly Electrolyte-Wettable Hydroxyapatite/Cellulose Nanofiber Hybrid Separators for Lithium- Ion Batteries

Liu, Yi1; Li, Chunxing1; Li, Chao2,3; Liang, Zhenye2,3; Hu, Xueshan2,3; Liu, Hao1; Zhang, Ze; Cui, Meng1; Chen, Gang1; Wan, Jiayu2,3; Zhang, Xiangwu1,4; Tao, Jinsong1

2023-03-01

10.1021/acsaem.2c04170

ACS APPLIED ENERGY MATERIALS   Impact Factor & Quartile

2574-0962

Separators have an important influence on the safety and performance of lithium-ion batteries (LIBs). However, traditional polyolefin-based separators suffer from poor thermal stability and weak electrolyte wettability. Here, by using hydroxyapatite (HAP) and cellulose nanofibers (CNFs) as raw materials, we fabricated a unique HAP/CNF hybrid separator. The separators exhibit excellent thermal properties, with high thermal stability (up to 250 degrees C) and outstanding flame retardancy. The separators also demonstrate excellent electrolyte wettability. Compared to polypropylene (PP) separators, the HAP/CNF separators show a smaller contact angle with electrolytes, 17.2 degrees for HAP/CNF and 45.5 degrees for PP. Meanwhile, the HAP/ CNF separators illustrate an excellent smoothness of 68.0 nm. In addition, the batteries assembled with the hybrid separators display a better performance compared with the batteries assembled with commercial PP separators. The raw materials are green, and the fabrication processes are free of organic solvents. We envision that the HAP/CNF hybrid separator could be a promising separator candidate for next-generation high-safety and high-performance LIBs.

cellulose nanofiber hydroxyapatite hybrid separator thermal stability lithium-ion battery

SCI

English

Corresponding

Guangzhou City Industrial Science & Technology Projects[202201010059] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515011388] ; Guangxi China Tobacco Industry Co., Ltd.[2022450000340057] ; fund for the construction of Bengbu-SCUT Research Center for Advanced Manufacturing of Biomaterials[20210190] ; National Key Research and Development Program of China[2018YFC1902102] ; National Natural Science Foundation of China[52272215] ; Center for Mechanical Engineering Research and Education at MIT (MechERE Center at MIT)[JCYJ20220818100218040]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000955013500001

AMER CHEMICAL SOC

Web of Science

1.South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China
2.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.North Carolina State Univ, Wilson Coll Text, Dept Text Engn Chem & Sci, Fiber & Polymer Sci Program, Raleigh, NC 27695 USA

Liu, Yi,Li, Chunxing,Li, Chao,et al. Highly Thermally Stable, Highly Electrolyte-Wettable Hydroxyapatite/Cellulose Nanofiber Hybrid Separators for Lithium- Ion Batteries[J]. ACS APPLIED ENERGY MATERIALS,2023.

Liu, Yi.,Li, Chunxing.,Li, Chao.,Liang, Zhenye.,Hu, Xueshan.,...&Tao, Jinsong.(2023).Highly Thermally Stable, Highly Electrolyte-Wettable Hydroxyapatite/Cellulose Nanofiber Hybrid Separators for Lithium- Ion Batteries.ACS APPLIED ENERGY MATERIALS.

Liu, Yi,et al."Highly Thermally Stable, Highly Electrolyte-Wettable Hydroxyapatite/Cellulose Nanofiber Hybrid Separators for Lithium- Ion Batteries".ACS APPLIED ENERGY MATERIALS (2023).