Back to Search
Start Over
Pure cellulose lithium-ion battery separator with tunable pore size and improved working stability by cellulose nanofibrils
- Source :
- Carbohydrate polymers. 251
- Publication Year :
- 2020
-
Abstract
- Separator is a vital component of lithium-ion batteries (LIBs) due to its important roles in the safety and electrochemical performance of the batteries. Herein, we reported a cellulose nanofibrils (CNFs) reinforced pure cellulose paper (CCP) as a LIBs separator fabricated by a facile filtration process. The nanosized CNFs played crucial roles as a tuner to optimize the pore size of the as-prepared CCP, and also as a reinforcer to improve the mechanical strength of the resultant CCP. Results showed that the tensile strength of the CCP with 20 wt.% CNFs was 227 % higher compared to the commercial cellulose separator. In addition, the lithium cobalt oxide/lithium metal battery assembled with CCP separator displayed better cycle performance and working stability (capacity retention ratio of 91 % after 100 cycles) compared to the batteries with cellulose separator (52 %) and polypropylene separator (84 %) owing to the multiple synergies between CCP separator and electrolytes.
- Subjects :
- musculoskeletal diseases
Paper
Materials science
Polymers and Plastics
Nanofibers
02 engineering and technology
Electrolyte
Lithium
010402 general chemistry
Electrochemistry
01 natural sciences
Lithium-ion battery
chemistry.chemical_compound
Electrolytes
Electric Power Supplies
immune system diseases
Tensile Strength
Ultimate tensile strength
Materials Chemistry
Cellulose
skin and connective tissue diseases
Lithium cobalt oxide
Separator (electricity)
Polypropylene
Organic Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
chemistry
Chemical engineering
Microscopy, Electron, Scanning
0210 nano-technology
Porosity
Subjects
Details
- ISSN :
- 18791344
- Volume :
- 251
- Database :
- OpenAIRE
- Journal :
- Carbohydrate polymers
- Accession number :
- edsair.doi.dedup.....294bd139e4bfe11dd3cca107b250443d