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Novel sandwich structured chrysotile fiber separator for advanced lithium-ion batteries
https://orcid.org/0000-0003-4679-8276
Abstract Separator plays a pivotal role in the electrochemical performance and safety of lithium-ion batteries (LIB). The commercial polyolefin-based separators suffer from inferior electrolyte wet ability, weak thermal stability, and severe safety concerns. Here, we report a novel sandwich structured chrysotile fiber (CF) separator with high thermal stability, ionic conductivity (3.93 mS cm−1) and superior electrolyte wettability prepared by a simple vacuum suction filtration process. The LiFePO4/separator/Li cell assembled with CF separator exhibited superior cycle stability (135 mAh g−1 at 1C after 300 cycles and 89 mAh g−1 at 5C after 1000 cycles) and outstanding high-rate performances (159, 128 and 102 mAh g−1 at 0.5, 2 and 5C, respectively) due to the attractive ionic conductivity and electrolyte wettability. Furthermore, its electrochemical performance was basically unaffected after thermal treatment due to high thermal stability, indicating high safety. The present CF separator is promising as a new kind of separator for advanced LIB with enhanced performance and high safety.
Graphical abstract Display Omitted
Highlights Novel sandwich structured chrysotite fiber (CF) separator was sucessfully prepared by a simple vacuum suction filtration process. The CF separator showed high thermal stability, ionic conductivity (3.93 mS cm−1) and superior electrolyte wettability. The cell assembled with the CF separator exhibited excellent cycle stability and high-rate capacity. The cell assembled with the CF separator exhibited superior high-temperature electrochemical performance.
Novel sandwich structured chrysotile fiber separator for advanced lithium-ion batteries
https://orcid.org/0000-0003-4679-8276
Abstract Separator plays a pivotal role in the electrochemical performance and safety of lithium-ion batteries (LIB). The commercial polyolefin-based separators suffer from inferior electrolyte wet ability, weak thermal stability, and severe safety concerns. Here, we report a novel sandwich structured chrysotile fiber (CF) separator with high thermal stability, ionic conductivity (3.93 mS cm−1) and superior electrolyte wettability prepared by a simple vacuum suction filtration process. The LiFePO4/separator/Li cell assembled with CF separator exhibited superior cycle stability (135 mAh g−1 at 1C after 300 cycles and 89 mAh g−1 at 5C after 1000 cycles) and outstanding high-rate performances (159, 128 and 102 mAh g−1 at 0.5, 2 and 5C, respectively) due to the attractive ionic conductivity and electrolyte wettability. Furthermore, its electrochemical performance was basically unaffected after thermal treatment due to high thermal stability, indicating high safety. The present CF separator is promising as a new kind of separator for advanced LIB with enhanced performance and high safety.
Graphical abstract Display Omitted
Highlights Novel sandwich structured chrysotite fiber (CF) separator was sucessfully prepared by a simple vacuum suction filtration process. The CF separator showed high thermal stability, ionic conductivity (3.93 mS cm−1) and superior electrolyte wettability. The cell assembled with the CF separator exhibited excellent cycle stability and high-rate capacity. The cell assembled with the CF separator exhibited superior high-temperature electrochemical performance.
Novel sandwich structured chrysotile fiber separator for advanced lithium-ion batteries
https://orcid.org/0000-0003-4679-8276
Abstract Separator plays a pivotal role in the electrochemical performance and safety of lithium-ion batteries (LIB). The commercial polyolefin-based separators suffer from inferior electrolyte wet ability, weak thermal stability, and severe safety concerns. Here, we report a novel sandwich structured chrysotile fiber (CF) separator with high thermal stability, ionic conductivity (3.93 mS cm−1) and superior electrolyte wettability prepared by a simple vacuum suction filtration process. The LiFePO4/separator/Li cell assembled with CF separator exhibited superior cycle stability (135 mAh g−1 at 1C after 300 cycles and 89 mAh g−1 at 5C after 1000 cycles) and outstanding high-rate performances (159, 128 and 102 mAh g−1 at 0.5, 2 and 5C, respectively) due to the attractive ionic conductivity and electrolyte wettability. Furthermore, its electrochemical performance was basically unaffected after thermal treatment due to high thermal stability, indicating high safety. The present CF separator is promising as a new kind of separator for advanced LIB with enhanced performance and high safety.
Graphical abstract Display Omitted
Highlights Novel sandwich structured chrysotite fiber (CF) separator was sucessfully prepared by a simple vacuum suction filtration process. The CF separator showed high thermal stability, ionic conductivity (3.93 mS cm−1) and superior electrolyte wettability. The cell assembled with the CF separator exhibited excellent cycle stability and high-rate capacity. The cell assembled with the CF separator exhibited superior high-temperature electrochemical performance.
Novel sandwich structured chrysotile fiber separator for advanced lithium-ion batteries
Cai, Nana (author) / Wang, Kun (author) / Li, Neng (author) / Huang, Suping (author) / Xiao, Qi (author)
Applied Clay Science ; 183
2019-10-08
Article (Journal)
Electronic Resource
English
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