Three-dimensional conductive network formed by carbon nanotubes in aqueous processed NMC electrode

Zhijia Du; Jianlin Li; Marissa Wood; Chengyu Mao; Claus Daniel; D. L. Wood

doi:10.1016/j.electacta.2018.03.063

Three-dimensional conductive network formed by carbon nanotubes in aqueous processed NMC electrode

Zhijia Du, Jianlin Li, Marissa Wood, Chengyu Mao, Claus Daniel, D. L. Wood

Emerging and Solid-State Batteries

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

Aqueous processing of lithium nickel manganese cobalt oxide (LiNi_0.5Mn_0.3Co_0.2O₂, NMC 532) cathodes was investigated by incorporating carbon nanotubes (CNTs) as the conductive additive. Morphology observation showed CNTs evenly disperse across the electrode, uniformly covering each primary particle, and form three-dimensional electronic pathways. A resistance measurement indicated the CNTs can improve the electronic conductivity of the composite electrode by an order of magnitude compared to carbon black. CNTs based electrodes showed higher rate performance, lower hysteresis, and better cycling performance with 99.4% capacity retention after 200 cycles in full pouch cells compared to 94.6% for carbon black based electrode. Meanwhile, the content of active materials in the electrode was increased from 90 wt% to 96 wt% and the energy density was increased by 11.7%. This research demonstrates an effective combined approach for achieving aqueous processed cathodes with enhanced durability while simultaneously achieving higher energy density by reducing the content of inactive components.

Original language	English
Pages (from-to)	54-61
Number of pages	8
Journal	Electrochimica Acta
Volume	270
DOIs	https://doi.org/10.1016/j.electacta.2018.03.063
State	Published - Apr 20 2018

Funding

This research at Oak Ridge National Laboratory , managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under Contract DE-AC05-00OR22725 , was sponsored by the Office of Energy Efficiency and Renewable Energy (EERE) Vehicle Technologies Office (VTO) (Deputy Director: David Howell) Applied Battery Research subprogram (Program Manager: Peter Faguy). The SEM characterization was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Battelle
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
Vehicle Technologies Office

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.electacta.2018.03.063

Cite this

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title = "Three-dimensional conductive network formed by carbon nanotubes in aqueous processed NMC electrode",

abstract = "Aqueous processing of lithium nickel manganese cobalt oxide (LiNi0.5Mn0.3Co0.2O2, NMC 532) cathodes was investigated by incorporating carbon nanotubes (CNTs) as the conductive additive. Morphology observation showed CNTs evenly disperse across the electrode, uniformly covering each primary particle, and form three-dimensional electronic pathways. A resistance measurement indicated the CNTs can improve the electronic conductivity of the composite electrode by an order of magnitude compared to carbon black. CNTs based electrodes showed higher rate performance, lower hysteresis, and better cycling performance with 99.4% capacity retention after 200 cycles in full pouch cells compared to 94.6% for carbon black based electrode. Meanwhile, the content of active materials in the electrode was increased from 90 wt% to 96 wt% and the energy density was increased by 11.7%. This research demonstrates an effective combined approach for achieving aqueous processed cathodes with enhanced durability while simultaneously achieving higher energy density by reducing the content of inactive components.",

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T1 - Three-dimensional conductive network formed by carbon nanotubes in aqueous processed NMC electrode

AU - Du, Zhijia

AU - Li, Jianlin

AU - Wood, Marissa

AU - Mao, Chengyu

AU - Daniel, Claus

AU - Wood, D. L.

PY - 2018/4/20

Y1 - 2018/4/20

N2 - Aqueous processing of lithium nickel manganese cobalt oxide (LiNi0.5Mn0.3Co0.2O2, NMC 532) cathodes was investigated by incorporating carbon nanotubes (CNTs) as the conductive additive. Morphology observation showed CNTs evenly disperse across the electrode, uniformly covering each primary particle, and form three-dimensional electronic pathways. A resistance measurement indicated the CNTs can improve the electronic conductivity of the composite electrode by an order of magnitude compared to carbon black. CNTs based electrodes showed higher rate performance, lower hysteresis, and better cycling performance with 99.4% capacity retention after 200 cycles in full pouch cells compared to 94.6% for carbon black based electrode. Meanwhile, the content of active materials in the electrode was increased from 90 wt% to 96 wt% and the energy density was increased by 11.7%. This research demonstrates an effective combined approach for achieving aqueous processed cathodes with enhanced durability while simultaneously achieving higher energy density by reducing the content of inactive components.

AB - Aqueous processing of lithium nickel manganese cobalt oxide (LiNi0.5Mn0.3Co0.2O2, NMC 532) cathodes was investigated by incorporating carbon nanotubes (CNTs) as the conductive additive. Morphology observation showed CNTs evenly disperse across the electrode, uniformly covering each primary particle, and form three-dimensional electronic pathways. A resistance measurement indicated the CNTs can improve the electronic conductivity of the composite electrode by an order of magnitude compared to carbon black. CNTs based electrodes showed higher rate performance, lower hysteresis, and better cycling performance with 99.4% capacity retention after 200 cycles in full pouch cells compared to 94.6% for carbon black based electrode. Meanwhile, the content of active materials in the electrode was increased from 90 wt% to 96 wt% and the energy density was increased by 11.7%. This research demonstrates an effective combined approach for achieving aqueous processed cathodes with enhanced durability while simultaneously achieving higher energy density by reducing the content of inactive components.

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JO - Electrochimica Acta

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Three-dimensional conductive network formed by carbon nanotubes in aqueous processed NMC electrode

Abstract

Funding

UN SDGs

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