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

Abstract

Here, 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$$-1\atop{LiCoO2}$$) at 0.1C (1C = 274 mAh g$$-1\atop{LiCoO2}$$). 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 large electrode/electrolyte interfacial area, and short Li+ transport pathways between the electrolyte and active material nanoparticles in the radial fiber direction.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1]
  1. Vanderbilt Univ., Nashville, TN (United States). Dept. of Chemical and Biomolecular Engineering
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); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1435796
Alternate Identifier(s):
OSTI ID: 1432895; OSTI ID: 1524167
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
Subject:
30 DIRECT ENERGY CONVERSION; 77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Areal Capacity; Full Cell; LiCoO2 Cathode; Li-ion Battery; Volumetric Capacity

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. https://doi.org/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. https://doi.org/10.1016/j.electacta.2016.08.033
Self, Ethan C., McRen, Emily C., Wycisk, Ryszard, and Pintauro, Peter N. Tue . "LiCoO2-Based Fiber Cathodes for Electrospun Full Cell Li-ion Batteries". United States. https://doi.org/10.1016/j.electacta.2016.08.033. https://www.osti.gov/servlets/purl/1435796.
@article{osti_1435796,
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 = {Here, 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$-1\atop{LiCoO2}$) at 0.1C (1C = 274 mAh g$-1\atop{LiCoO2}$). 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 large 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 = {8}
}

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Cited by: 11 works
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Works referencing / citing this record:

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