Multilayered, Bipolar, All-Solid-State Battery Enabled by a Perovskite-Based Biphasic Solid Electrolyte

Hyun Seop Shin, Won Gyue Ryu, Min Sik Park, Kyu Nam Jung, Hansung Kim, Jong Won Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The use of solid electrolytes provides a technical solution to address the safety issues of lithium-ion batteries and enables a bipolar design of high-voltage and high-energy battery modules. The bipolar design avoids unnecessary components and parts for packaging and electrical connection; therefore, it facilitates an increase in the volumetric energy density of the battery, while enabling easy build-up of total output voltage. Herein, the design and construction of a multilayered, bipolar-type, all-solid-state battery (ASSB) from a biphasic solid electrolyte (BSE) based on inorganic Li0.29La0.57TiO3 perovskite and poly(ethylene oxide) (PEO) are reported. A flexible and freestanding BSE membrane exhibits high Li+ conductivity of about 1.2×10−4 S cm−1, and shows enhanced electrochemical/thermal stability, in comparison to a PEO-only solid electrolyte. A single-layered ASSB assembled with a BSE shows promising electrochemical performance, as evidenced by a high reversible capacity of about 123 mA h g−1 and excellent cycling stability over 100 cycles. Furthermore, a proof-of-concept bipolar ASSB comprising three unit cells connected in series is constructed by using the BSE membrane and Al/Cu-cladded bipolar plates. The bipolar ASSB shows high thermal stability and operates reversibly without any internal short circuit or current leakage during charge–discharge cycles; this demonstrates that BSEs provide a promising approach to the design and fabrication of bipolar ASSBs with improved safety and high energy density.

Original languageEnglish
Pages (from-to)3184-3190
Number of pages7
JournalChemSusChem
Volume11
Issue number18
DOIs
Publication statusPublished - 2018 Sep 21

Fingerprint

Solid electrolytes
perovskite
Perovskite
electrolyte
Polyethylene oxides
Thermodynamic stability
Membranes
safety
bovine spongiform encephalopathy
membrane
energy
Electric potential
Leakage currents
Short circuit currents
solid state
battery
lithium
Packaging
ethylene
leakage

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Shin, Hyun Seop ; Ryu, Won Gyue ; Park, Min Sik ; Jung, Kyu Nam ; Kim, Hansung ; Lee, Jong Won. / Multilayered, Bipolar, All-Solid-State Battery Enabled by a Perovskite-Based Biphasic Solid Electrolyte. In: ChemSusChem. 2018 ; Vol. 11, No. 18. pp. 3184-3190.
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Multilayered, Bipolar, All-Solid-State Battery Enabled by a Perovskite-Based Biphasic Solid Electrolyte. / Shin, Hyun Seop; Ryu, Won Gyue; Park, Min Sik; Jung, Kyu Nam; Kim, Hansung; Lee, Jong Won.

In: ChemSusChem, Vol. 11, No. 18, 21.09.2018, p. 3184-3190.

Research output: Contribution to journalArticle

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