High-Rate Cycling of Lithium-Metal Batteries Enabled by Dual-Salt Electrolyte-Assisted Micropatterned Interfaces

Byeolhee Yoon; Jinkyu Park; Jinhong Lee; Seokwoo Kim; Xiaodi Ren; Yong Min Lee; Hee Tak Kim; Hongkyung Lee; Myung Hyun Ryou

doi:10.1021/acsami.9b05492

High-Rate Cycling of Lithium-Metal Batteries Enabled by Dual-Salt Electrolyte-Assisted Micropatterned Interfaces

Byeolhee Yoon
, Jinkyu Park
, Jinhong Lee
, Seokwoo Kim
, Xiaodi Ren
, Yong Min Lee
, Hee Tak Kim
, Hongkyung Lee
, Myung Hyun Ryou

Department of Energy and Science and Engineering

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

31 Scopus citations

Abstract

We present a synergistic strategy to boost the cycling performance of Li-metal batteries. The strategy is based on the combined use of a micropattern (MP) on the surface of the Li-metal electrode and an advanced dual-salt electrolyte (DSE) system to more efficiently control undesired Li-metal deposition at higher current density (â¼3 mA cm^-2). The MP-Li electrode induces a spatially uniform current distribution to achieve dendrite-free Li-metal deposition beneath the surface layer formed by the DSE. The MP-Li/DSE combination exhibited excellent synergistic rate capability improvements that were neither observed with the MP-Li system nor for the bare Li/DSE system. The combination also resulted in the Li||LiMn₂O₄ battery attaining over 1â€»000 cycles, which is twice as long at the same capacity retention (80%) compared with the control cells (MP-Li without DSE). We further demonstrated extremely fast charging at a rate of 15 C (19.5 mA cm^-2).

Original language	English
Pages (from-to)	31777-31785
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	11
Issue number	35
DOIs	https://doi.org/10.1021/acsami.9b05492
State	Published - 4 Sep 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

Keywords

dual-salt electrolyte
fast-charging
lithium dendrite
lithium metal battery
micropatterning

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10.1021/acsami.9b05492

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title = "High-Rate Cycling of Lithium-Metal Batteries Enabled by Dual-Salt Electrolyte-Assisted Micropatterned Interfaces",

abstract = "We present a synergistic strategy to boost the cycling performance of Li-metal batteries. The strategy is based on the combined use of a micropattern (MP) on the surface of the Li-metal electrode and an advanced dual-salt electrolyte (DSE) system to more efficiently control undesired Li-metal deposition at higher current density ({\^a}¼3 mA cm-2). The MP-Li electrode induces a spatially uniform current distribution to achieve dendrite-free Li-metal deposition beneath the surface layer formed by the DSE. The MP-Li/DSE combination exhibited excellent synergistic rate capability improvements that were neither observed with the MP-Li system nor for the bare Li/DSE system. The combination also resulted in the Li||LiMn2O4 battery attaining over 1{\^a}€»000 cycles, which is twice as long at the same capacity retention (80\%) compared with the control cells (MP-Li without DSE). We further demonstrated extremely fast charging at a rate of 15 C (19.5 mA cm-2).",

keywords = "dual-salt electrolyte, fast-charging, lithium dendrite, lithium metal battery, micropatterning",

author = "Byeolhee Yoon and Jinkyu Park and Jinhong Lee and Seokwoo Kim and Xiaodi Ren and Lee, \{Yong Min\} and Kim, \{Hee Tak\} and Hongkyung Lee and Ryou, \{Myung Hyun\}",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acsami.9b05492",

language = "English",

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AU - Yoon, Byeolhee

AU - Park, Jinkyu

AU - Lee, Jinhong

AU - Kim, Seokwoo

AU - Ren, Xiaodi

AU - Lee, Yong Min

AU - Kim, Hee Tak

AU - Lee, Hongkyung

AU - Ryou, Myung Hyun

PY - 2019/9/4

Y1 - 2019/9/4

N2 - We present a synergistic strategy to boost the cycling performance of Li-metal batteries. The strategy is based on the combined use of a micropattern (MP) on the surface of the Li-metal electrode and an advanced dual-salt electrolyte (DSE) system to more efficiently control undesired Li-metal deposition at higher current density (â¼3 mA cm-2). The MP-Li electrode induces a spatially uniform current distribution to achieve dendrite-free Li-metal deposition beneath the surface layer formed by the DSE. The MP-Li/DSE combination exhibited excellent synergistic rate capability improvements that were neither observed with the MP-Li system nor for the bare Li/DSE system. The combination also resulted in the Li||LiMn2O4 battery attaining over 1â€»000 cycles, which is twice as long at the same capacity retention (80%) compared with the control cells (MP-Li without DSE). We further demonstrated extremely fast charging at a rate of 15 C (19.5 mA cm-2).

AB - We present a synergistic strategy to boost the cycling performance of Li-metal batteries. The strategy is based on the combined use of a micropattern (MP) on the surface of the Li-metal electrode and an advanced dual-salt electrolyte (DSE) system to more efficiently control undesired Li-metal deposition at higher current density (â¼3 mA cm-2). The MP-Li electrode induces a spatially uniform current distribution to achieve dendrite-free Li-metal deposition beneath the surface layer formed by the DSE. The MP-Li/DSE combination exhibited excellent synergistic rate capability improvements that were neither observed with the MP-Li system nor for the bare Li/DSE system. The combination also resulted in the Li||LiMn2O4 battery attaining over 1â€»000 cycles, which is twice as long at the same capacity retention (80%) compared with the control cells (MP-Li without DSE). We further demonstrated extremely fast charging at a rate of 15 C (19.5 mA cm-2).

KW - dual-salt electrolyte

KW - fast-charging

KW - lithium dendrite

KW - lithium metal battery

KW - micropatterning

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DO - 10.1021/acsami.9b05492

M3 - Article

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AN - SCOPUS:85071786021

SN - 1944-8244

VL - 11

SP - 31777

EP - 31785

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 35

ER -

High-Rate Cycling of Lithium-Metal Batteries Enabled by Dual-Salt Electrolyte-Assisted Micropatterned Interfaces

Abstract

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Keywords

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