A low ride on processing temperature for fast lithium conduction in garnet solid-state battery films

Reto Pfenninger , Michał Struzik , Inigo Garbayo , Evelyn Stilp , Jennifer Rupp

Abstract

A critical parameter for the large-scale integration of solid-state batteries is to establish processing strategies to assemble battery materials at the lowest processing temperature possible while keeping lithium conduction up. Despite extensive research efforts, integrating ceramic film electrolytes while keeping a high lithium concentration and conduction at a low processing temperature remains challenging. Here, we report an alternative ceramic processing strategy through the evolution of multilayers establishing lithium reservoirs directly in lithium–garnet films that allow for lithiated and fast-conducting cubic solid-state battery electrolytes at unusually low processing temperatures. A lithium–garnet film processed via the multilayer processing approach exhibited the fastest ionic conductivity of 2.9 ± 0.05 × 10−5 S cm−1 (at room temperature) and the desired cubic phase, but was stabilized at a processing temperature lowered by 400 °C. This method enables future solid-state battery architectures with more room for cathode volumes by design, and reduces the processing temperature.

Author Reto Pfenninger - [Massachusetts Institute of Technology]
Reto Pfenninger,,
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, Michał Struzik (FP / SSID)
Michał Struzik,,
- Solid State Ionics Division
, Inigo Garbayo - [Swiss Federal Institute of Technology in Zurich (ETH Zürich)]
Inigo Garbayo,,
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- Eidgenössische Technische Hochschule Zürich
, Evelyn Stilp - [Empa - Swiss Federal Laboratories for Materials Science and Technology]
Evelyn Stilp,,
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, Jennifer Rupp - [Massachusetts Institute of Technology]
Jennifer Rupp,,
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Journal seriesNature Energy, ISSN 2058-7546, e-ISSN 2058-7546
Issue year2019
Vol4
Pages475-483
Publication size in sheets0.5
ASJC Classification2102 Energy Engineering and Power Technology; 2103 Fuel Technology; 2105 Renewable Energy, Sustainability and the Environment; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1038/s41560-019-0384-4
Languageen angielski
Score (nominal)200
Score sourcejournalList
ScoreMinisterial score = 200.0, 01-07-2020, ArticleFromJournal
Publication indicators Scopus Citations = 20; WoS Citations = 4; GS Citations = 11.0; WoS Impact Factor: 2018 = 54.0 (2) - 2018=54.026 (5)
Citation count*25 (2020-07-14)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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