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Title: Improved Stability and Cyclability of Ceramic Solid Electrolyte by Coating Polymer

Journal Article · · Journal of the Electrochemical Society (Online)
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  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Colorado School of Mines, Golden, CO (United States)
  3. Univ. of Colorado, Boulder, CO (United States)

Rechargeable all-solid-state lithium (Li) metal batteries show better safety and energy density compared to commercial Li-ion batteries using liquid electrolyte. As the key component of Li metal batteries, ceramic solid-state electrolyte has attracted great interest because of its high ion conductivity and great potential in interfacing with Li metal. Ceramic electrolyte has a more stable interface with Li metal than liquid electrolyte, but chemical reaction and Li dendrite growth at the electrolyte/Li interface are still significant, which causes device degradation and failure by cycling of Li plating and stripping. Unlike ceramic electrolyte, polymer electrolyte has a relatively stable interface with Li metal and better mechanical flexibility. Therefore, we introduced a polymer electrolyte coating to protect the ceramic electrolyte from direct contact with Li metal. The galvanotactic cycling Li plating/striping data on the devices with (without) the coating illustrates increased (decreased) overall conductivity and cyclability of the test cell by the cycling. Nanometer-scale ionic-transport imaging, based on atomic force microscopy, shows that cycling degrades the ceramic-only electrolyte by partially blocking ionic transport in areas; in contrast, cycling on the polymer-coated electrolyte improves ionic conductivity. Compared with the ceramic-only electrolyte, this novel polymer electrolyte coating on ceramic electrolyte shows less degradation when in contact with Li metal.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE National Renewable Energy Laboratory (NREL), Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1598976
Report Number(s):
NREL/JA--5K00-76018
Journal Information:
Journal of the Electrochemical Society (Online), Journal Name: Journal of the Electrochemical Society (Online) Journal Issue: 2 Vol. 167; ISSN 1945-7111
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (28)

Hybrid Electrolytes with Controlled Network Structures for Lithium Metal Batteries journal August 2015
Reassessing the bulk ionic conductivity of solid-state electrolytes journal January 2018
Simple method to determine electronic and ionic components of the conductivity in mixed conductors a review journal May 2002
Direct observation of lithium dendrites inside garnet-type lithium-ion solid electrolyte journal August 2015
Influence of Salt Content on Polymer Dissolution and Ionic Association in Polymer Electrolyte journal January 2001
Lithium metal anodes for rechargeable batteries journal January 2014
Influence of Electrolyte Modulus on the Local Current Density at a Dendrite Tip on a Lithium Metal Electrode journal January 2016
Electrochemical Stability of Li 10 GeP 2 S 12 and Li 7 La 3 Zr 2 O 12 Solid Electrolytes journal January 2016
Intergranular Li metal propagation through polycrystalline Li6.25Al0.25La3Zr2O12 ceramic electrolyte journal January 2017
A Perovskite Electrolyte That Is Stable in Moist Air for Lithium-Ion Batteries journal June 2018
A Flexible Solid Electrolyte Interphase Layer for Long-Life Lithium Metal Anodes journal January 2018
Accessing the bottleneck in all-solid state batteries, lithium-ion transport over the solid-electrolyte-electrode interface journal October 2017
Solid-State Electrolyte Anchored with a Carboxylated Azo Compound for All-Solid-State Lithium Batteries journal June 2018
Transient Behavior of the Metal Interface in Lithium Metal-Garnet Batteries journal October 2017
Stabilizing Solid Electrolyte-Anode Interface in Li-Metal Batteries by Boron Nitride-Based Nanocomposite Coating journal June 2019
Ionic Conductivity Enhancement of Polymer Electrolytes with Ceramic Nanowire Fillers journal March 2015
Enhancing ionic conductivity in composite polymer electrolytes with well-aligned ceramic nanowires journal April 2017
In situ SEM study of a lithium deposition and dissolution mechanism in a bulk-type solid-state cell with a Li2S–P2S5 solid electrolyte journal January 2013
Interface engineering of sulfide electrolytes for all-solid-state lithium batteries journal November 2018
Lithium Dendrite Formation on a Lithium Metal Anode from Liquid, Polymer and Solid Electrolytes journal January 2016
Recent progress in sulfide-based solid electrolytes for Li-ion batteries journal November 2016
Ceramic and polymeric solid electrolytes for lithium-ion batteries journal August 2010
Toward All-Solid-State Lithium Batteries: Three-Dimensional Visualization of Lithium Migration in β-Li 3 PS 4 Ceramic Electrolyte journal January 2018
High electronic conductivity as the origin of lithium dendrite formation within solid electrolytes journal January 2019
Contact between Garnet-Type Solid Electrolyte and Lithium Metal Anode: Influence on Charge Transfer Resistance and Short Circuit Prevention journal January 2017
A Lithium Amide-Borohydride Solid-State Electrolyte with Lithium-Ion Conductivities Comparable to Liquid Electrolytes journal June 2017
Lithium-ion conducting oxide single crystal as solid electrolyte for advanced lithium battery application journal July 2018
Electrochemical Window of the Li-Ion Solid Electrolyte Li 7 La 3 Zr 2 O 12 journal January 2017