Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 22, Pages 11525-11529Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am404082h
Keywords
cross-linked; nanoweb; binder-free; electrospinning; titanium oxide (TiO2); lithium ion battery
Funding
- Global Research Laboratory (GRL) Program through the National Research Foundation of Korea (KRF) [K20704000003TA050000310)]
- Ministry of Science, ICT (Information and Communication Technologies) and Future Planning
- International Cooperation program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government of Ministry of Trade, Industry Energy [2011T100100369]
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The nanoweb structure of TiO2 anode, cross-linked between electrospun nanofibers, is directly fabricated on the current collector by utilizing the fluidity of low glass transition temperature polymer, poly(vinyl acetate), at room temperature. This characteristic enables us to fabricate the nanoweb structure by direct electrospinning on the current collector, followed by uniaxial pressing. This proposed structure facilitates electron transport through the direct conducting pathways between TiO2 active materials and current collector as well as provides strong adhesion strength to the current collector without polymeric binders. Consequently, we could achieve stable cycle performance up to 100 cycles and the excellent rate capability of similar to 60% at high rate charge/discharge condition of 10 C.
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