Design and processing for high performance Li ion battery electrodes with double-layer structure

Sergiy Kalnaus; Kelsey Livingston; W. Blake Hawley; Hong Wang; Jianlin Li

doi:10.1016/j.est.2021.103582

Design and processing for high performance Li ion battery electrodes with double-layer structure

Sergiy Kalnaus, Kelsey Livingston, W. Blake Hawley, Hong Wang, Jianlin Li

Multiphysics Modeling and Flows

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

32 Scopus citations

Abstract

A two-layer LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811) cathode has been designed and fabricated containing a “power layer” and “energy layer”, with corresponding porosity and particle size prescribed to each layer to achieve best utilization of electrode material (maximum integrated depth of discharge across the electrode thickness) at high applied current. The cathode showed a 17% improvement in capacity when tested in symmetric cells. When applying the design to a full cell, where both positive and negative electrodes contain power and energy layers, a 74% increase in discharge capacity at 2C was achieved compared to the cell with conventional electrodes. This demonstrates an avenue to increase energy and power density of lithium–ion batteries and enable fast charging capability.

Original language	English
Article number	103582
Journal	Journal of Energy Storage
Volume	44
DOIs	https://doi.org/10.1016/j.est.2021.103582
State	Published - Dec 15 2021

Funding

This research at Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725, was sponsored by the U.S. Army Research Office , contract W911NF-18-C-0080 . We thank Drs. Robert Mantz and Nicole Fox for their support. Notice: This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Army Research Office	W911NF-18-C-0080
Oak Ridge National Laboratory

Keywords

Aqueous processing
Design
Lithium–ion batteries
Multi-layer coating
Symmetric cells

UN SDGs

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

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10.1016/j.est.2021.103582

Cite this

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abstract = "A two-layer LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode has been designed and fabricated containing a “power layer” and “energy layer”, with corresponding porosity and particle size prescribed to each layer to achieve best utilization of electrode material (maximum integrated depth of discharge across the electrode thickness) at high applied current. The cathode showed a 17% improvement in capacity when tested in symmetric cells. When applying the design to a full cell, where both positive and negative electrodes contain power and energy layers, a 74% increase in discharge capacity at 2C was achieved compared to the cell with conventional electrodes. This demonstrates an avenue to increase energy and power density of lithium–ion batteries and enable fast charging capability.",

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T1 - Design and processing for high performance Li ion battery electrodes with double-layer structure

AU - Kalnaus, Sergiy

AU - Livingston, Kelsey

AU - Hawley, W. Blake

AU - Wang, Hong

AU - Li, Jianlin

PY - 2021/12/15

Y1 - 2021/12/15

N2 - A two-layer LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode has been designed and fabricated containing a “power layer” and “energy layer”, with corresponding porosity and particle size prescribed to each layer to achieve best utilization of electrode material (maximum integrated depth of discharge across the electrode thickness) at high applied current. The cathode showed a 17% improvement in capacity when tested in symmetric cells. When applying the design to a full cell, where both positive and negative electrodes contain power and energy layers, a 74% increase in discharge capacity at 2C was achieved compared to the cell with conventional electrodes. This demonstrates an avenue to increase energy and power density of lithium–ion batteries and enable fast charging capability.

AB - A two-layer LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode has been designed and fabricated containing a “power layer” and “energy layer”, with corresponding porosity and particle size prescribed to each layer to achieve best utilization of electrode material (maximum integrated depth of discharge across the electrode thickness) at high applied current. The cathode showed a 17% improvement in capacity when tested in symmetric cells. When applying the design to a full cell, where both positive and negative electrodes contain power and energy layers, a 74% increase in discharge capacity at 2C was achieved compared to the cell with conventional electrodes. This demonstrates an avenue to increase energy and power density of lithium–ion batteries and enable fast charging capability.

KW - Aqueous processing

KW - Design

KW - Lithium–ion batteries

KW - Multi-layer coating

KW - Symmetric cells

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Design and processing for high performance Li ion battery electrodes with double-layer structure

Abstract

Funding

Keywords

UN SDGs

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