High-Performance Lithium Metal Negative Electrode with a Soft and Flowable Polymer Coating

Guangyuan Zheng; Chao Wang; Allen Pei; Jeffrey Lopez; Feifei Shi; Zheng Chen; Austin D. Sendek; Hyun Wook Lee; Zhenda Lu; Holger Schneider; Marina M. Safont-Sempere; Steven Chu; Zhenan Bao; Yi Cui

doi:10.1021/acsenergylett.6b00456

High-Performance Lithium Metal Negative Electrode with a Soft and Flowable Polymer Coating

Guangyuan Zheng, Chao Wang, Allen Pei, Jeffrey Lopez, Feifei Shi, Zheng Chen, Austin D. Sendek, Hyun Wook Lee, Zhenda Lu, Holger Schneider, Marina M. Safont-Sempere, Steven Chu, Zhenan Bao^*, Yi Cui

^*Corresponding author for this work

Chemical and Biological Engineering

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

235 Scopus citations

Abstract

The future development of low-cost, high-performance electric vehicles depends on the success of next-generation lithium-ion batteries with higher energy density. The lithium metal negative electrode is key to applying these new battery technologies. However, the problems of lithium dendrite growth and low Coulombic efficiency have proven to be difficult challenges to overcome. Fundamentally, these two issues stem from the instability of the solid electrolyte interphase (SEI) layer, which is easily damaged by the large volumetric changes during battery cycling. In this work, we show that when a highly viscoelastic polymer was applied to the lithium metal electrode, the morphology of the lithium deposition became significantly more uniform. At a high current density of 5 mA/cm² we obtained a flat and dense lithium metal layer, and we observed stable cycling Coulombic efficiency of ∼97% maintained for more than 180 cycles at a current density of 1 mA/cm².

Original language	English (US)
Pages (from-to)	1247-1255
Number of pages	9
Journal	ACS Energy Letters
Volume	1
Issue number	6
DOIs	https://doi.org/10.1021/acsenergylett.6b00456
State	Published - Dec 9 2016

ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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10.1021/acsenergylett.6b00456

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title = "High-Performance Lithium Metal Negative Electrode with a Soft and Flowable Polymer Coating",

abstract = "The future development of low-cost, high-performance electric vehicles depends on the success of next-generation lithium-ion batteries with higher energy density. The lithium metal negative electrode is key to applying these new battery technologies. However, the problems of lithium dendrite growth and low Coulombic efficiency have proven to be difficult challenges to overcome. Fundamentally, these two issues stem from the instability of the solid electrolyte interphase (SEI) layer, which is easily damaged by the large volumetric changes during battery cycling. In this work, we show that when a highly viscoelastic polymer was applied to the lithium metal electrode, the morphology of the lithium deposition became significantly more uniform. At a high current density of 5 mA/cm2 we obtained a flat and dense lithium metal layer, and we observed stable cycling Coulombic efficiency of ∼97% maintained for more than 180 cycles at a current density of 1 mA/cm2.",

author = "Guangyuan Zheng and Chao Wang and Allen Pei and Jeffrey Lopez and Feifei Shi and Zheng Chen and Sendek, {Austin D.} and Lee, {Hyun Wook} and Zhenda Lu and Holger Schneider and Safont-Sempere, {Marina M.} and Steven Chu and Zhenan Bao and Yi Cui",

note = "Funding Information: We acknowledge the support from the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy through the Advanced Battery Materials Research (BMR) Program (Battery500 Consortium). This work was also supported by BASF through the California Research Alliance (CARA). Part of this work was performed at the Stanford Nano Shared Facilities (SNSF). G.Z. acknowledges financial support from the Agency for Science, Technology and Research (A*STAR), Singapore. A.P. acknowledges the support from the U.S. Department of Defense through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program and from Stanford University through the Stanford Graduate Fellowship (SGF) Program. J.L. acknowledges support by the National Science Foundation Graduate Research Fellowship Program under Grant DGE-114747. A.D.S. acknowledges funding from the Stanford University Office of Technology Licensing Fellowship through the Stanford Graduate Fellowship program. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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doi = "10.1021/acsenergylett.6b00456",

language = "English (US)",

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AU - Zheng, Guangyuan

AU - Wang, Chao

AU - Pei, Allen

AU - Lopez, Jeffrey

AU - Shi, Feifei

AU - Chen, Zheng

AU - Sendek, Austin D.

AU - Lee, Hyun Wook

AU - Lu, Zhenda

AU - Schneider, Holger

AU - Safont-Sempere, Marina M.

AU - Chu, Steven

AU - Bao, Zhenan

AU - Cui, Yi

N1 - Funding Information: We acknowledge the support from the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy through the Advanced Battery Materials Research (BMR) Program (Battery500 Consortium). This work was also supported by BASF through the California Research Alliance (CARA). Part of this work was performed at the Stanford Nano Shared Facilities (SNSF). G.Z. acknowledges financial support from the Agency for Science, Technology and Research (A*STAR), Singapore. A.P. acknowledges the support from the U.S. Department of Defense through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program and from Stanford University through the Stanford Graduate Fellowship (SGF) Program. J.L. acknowledges support by the National Science Foundation Graduate Research Fellowship Program under Grant DGE-114747. A.D.S. acknowledges funding from the Stanford University Office of Technology Licensing Fellowship through the Stanford Graduate Fellowship program. Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/12/9

Y1 - 2016/12/9

N2 - The future development of low-cost, high-performance electric vehicles depends on the success of next-generation lithium-ion batteries with higher energy density. The lithium metal negative electrode is key to applying these new battery technologies. However, the problems of lithium dendrite growth and low Coulombic efficiency have proven to be difficult challenges to overcome. Fundamentally, these two issues stem from the instability of the solid electrolyte interphase (SEI) layer, which is easily damaged by the large volumetric changes during battery cycling. In this work, we show that when a highly viscoelastic polymer was applied to the lithium metal electrode, the morphology of the lithium deposition became significantly more uniform. At a high current density of 5 mA/cm2 we obtained a flat and dense lithium metal layer, and we observed stable cycling Coulombic efficiency of ∼97% maintained for more than 180 cycles at a current density of 1 mA/cm2.

AB - The future development of low-cost, high-performance electric vehicles depends on the success of next-generation lithium-ion batteries with higher energy density. The lithium metal negative electrode is key to applying these new battery technologies. However, the problems of lithium dendrite growth and low Coulombic efficiency have proven to be difficult challenges to overcome. Fundamentally, these two issues stem from the instability of the solid electrolyte interphase (SEI) layer, which is easily damaged by the large volumetric changes during battery cycling. In this work, we show that when a highly viscoelastic polymer was applied to the lithium metal electrode, the morphology of the lithium deposition became significantly more uniform. At a high current density of 5 mA/cm2 we obtained a flat and dense lithium metal layer, and we observed stable cycling Coulombic efficiency of ∼97% maintained for more than 180 cycles at a current density of 1 mA/cm2.

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High-Performance Lithium Metal Negative Electrode with a Soft and Flowable Polymer Coating

Abstract

ASJC Scopus subject areas

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