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Title: LiCoO2-Based Fiber Cathodes for Electrospun Full Cell Li-ion Batteries

Abstract

Particle/polymer electrospinning was used to prepare fiber mat cathodes containing LiCoO2 nanoparticles, carbon powder, and poly(vinylidene fluoride) for Li-ion batteries. The fibers had a high LiCoO2 particle content (70 wt%) which allowed for a high gravimetric capacity of 90 mAh g-1 (corresponding to 128 mAh g-1LiCoO2) at 0.1C. Cathode performance was stable in a half cell with 78% capacity retention over 200 cycles at 0.5C. Unlike previous work on electrospun LiCoO2 nanofibers prepared using sol-gel chemistry and high temperature processing, the particle/polymer fiber mat cathodes reported here were made thick with a high fiber volume fraction for high areal and volumetric capacities at fast charge/discharge rates (e.g., 0.81 mAh cm-2 and 62 mAh cm-3 at 2C) which were much greater than that of a slurry cast cathode of the same composition (0.004 mAh cm-2 and 0.30 mAh cm-3 at 2C). Full cells containing a LiCoO2/C/PVDF fiber mat cathode and C/PVDF fiber mat anode were also prepared and characterized. These electrospun batteries exhibited a high energy density of 144 Wh kg-1 at 0.1C and an areal capacity of 1.03 mAh cm-2 at 1C. The excellent performance of the electrospun particle/polymer cathodes and anodes is attributed to electrolyte penetration throughout the 3Dmore » fiber electrode mats, a high electrode/electrolyte interfacial area, and short Li+ transport pathways between the electrolyte and active material nanoparticles in the radial fiber direction.« less

Authors:
ORCiD logo; ; ; ORCiD logo
Publication Date:
Research Org.:
Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); Arkema Inc., Colombes (France); Celgard LLC, Charlotte, NC (United States); National Science Foundation (NSF)
OSTI Identifier:
1524167
Alternate Identifier(s):
OSTI ID: 1432895
Grant/Contract Number:  
[EE0007215; EPS 1004083]
Resource Type:
Accepted Manuscript
Journal Name:
Electrochimica Acta
Additional Journal Information:
[ Journal Volume: 214; Journal Issue: C]; Journal ID: ISSN 0013-4686
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Self, Ethan C., McRen, Emily C., Wycisk, Ryszard, and Pintauro, Peter N. LiCoO2-Based Fiber Cathodes for Electrospun Full Cell Li-ion Batteries. United States: N. p., 2016. Web. doi:10.1016/j.electacta.2016.08.033.
Self, Ethan C., McRen, Emily C., Wycisk, Ryszard, & Pintauro, Peter N. LiCoO2-Based Fiber Cathodes for Electrospun Full Cell Li-ion Batteries. United States. doi:10.1016/j.electacta.2016.08.033.
Self, Ethan C., McRen, Emily C., Wycisk, Ryszard, and Pintauro, Peter N. Sat . "LiCoO2-Based Fiber Cathodes for Electrospun Full Cell Li-ion Batteries". United States. doi:10.1016/j.electacta.2016.08.033. https://www.osti.gov/servlets/purl/1524167.
@article{osti_1524167,
title = {LiCoO2-Based Fiber Cathodes for Electrospun Full Cell Li-ion Batteries},
author = {Self, Ethan C. and McRen, Emily C. and Wycisk, Ryszard and Pintauro, Peter N.},
abstractNote = {Particle/polymer electrospinning was used to prepare fiber mat cathodes containing LiCoO2 nanoparticles, carbon powder, and poly(vinylidene fluoride) for Li-ion batteries. The fibers had a high LiCoO2 particle content (70 wt%) which allowed for a high gravimetric capacity of 90 mAh g-1 (corresponding to 128 mAh g-1LiCoO2) at 0.1C. Cathode performance was stable in a half cell with 78% capacity retention over 200 cycles at 0.5C. Unlike previous work on electrospun LiCoO2 nanofibers prepared using sol-gel chemistry and high temperature processing, the particle/polymer fiber mat cathodes reported here were made thick with a high fiber volume fraction for high areal and volumetric capacities at fast charge/discharge rates (e.g., 0.81 mAh cm-2 and 62 mAh cm-3 at 2C) which were much greater than that of a slurry cast cathode of the same composition (0.004 mAh cm-2 and 0.30 mAh cm-3 at 2C). Full cells containing a LiCoO2/C/PVDF fiber mat cathode and C/PVDF fiber mat anode were also prepared and characterized. These electrospun batteries exhibited a high energy density of 144 Wh kg-1 at 0.1C and an areal capacity of 1.03 mAh cm-2 at 1C. The excellent performance of the electrospun particle/polymer cathodes and anodes is attributed to electrolyte penetration throughout the 3D fiber electrode mats, a high electrode/electrolyte interfacial area, and short Li+ transport pathways between the electrolyte and active material nanoparticles in the radial fiber direction.},
doi = {10.1016/j.electacta.2016.08.033},
journal = {Electrochimica Acta},
number = [C],
volume = [214],
place = {United States},
year = {2016},
month = {10}
}

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