Improving the Cycle Life of Solid-State Batteries by Addition of Oxide Nanoparticles to a Complex Hydride Solid Electrolyte

Laura de Kort; Peter Ngene; Marcello Baricco; Petra de Jongh; Valerio Gulino

doi:10.1021/acs.jpcc.2c08902

Improving the Cycle Life of Solid-State Batteries by Addition of Oxide Nanoparticles to a Complex Hydride Solid Electrolyte

Laura de Kort, Peter Ngene, Marcello Baricco, Petra de Jongh^*, Valerio Gulino^*

^*Corresponding author for this work

University of Turin

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

Abstract

We report that the addition of silica nanoparticles to the iodide-substituted LiBH₄ (h-Li(BH₄)_0.8(I)_0.2) improves the ion conductivity and, remarkably, the cycle life of the all-solid state batteries. The h-Li(BH₄)_0.8(I)_0.2-SiO₂ was synthesized by mechanochemical treatment and possesses a Li⁺ conductivity of 9.3 × 10^-5 S cm^-1 at RT. It has an electrochemical stability window of about 2.5 V vs Li⁺/Li and an improved stability against Li-metal, compared to h-Li(BH₄)_0.8(I)_0.2, owing to the addition of oxide nanoparticles, which we ascribed to a greater mechanical stability of the solid-state electrolyte. The all-solid state battery Li|h-Li(BH₄)_0.8(I)_0.2-SiO₂|TiS₂ demonstrated a good long-term cyclability, i.e., over 200 cycles at C/20 and even including a C-rate of C/5, demonstrating that the addition of oxide nanoparticles improves the cycling stability of the electrolyte.

Original language	English
Pages (from-to)	3988-3995
Number of pages	8
Journal	Journal of Physical Chemistry C
Volume	127
Issue number	8
DOIs	https://doi.org/10.1021/acs.jpcc.2c08902
Publication status	Published - 2 Mar 2023

Bibliographical note

Funding Information:
Financial support from The Netherlands Organization for Scientific Research (NWO-ECHO and NOW-RELEASE) is gratefully acknowledged. The authors kindly acknowledge Jan Willem de Rijk and Marcel Van Asselen for technical support in the laboratory

Publisher Copyright:
© 2023 The Authors. Published by American Chemical Society.

Funding

Financial support from The Netherlands Organization for Scientific Research (NWO-ECHO and NOW-RELEASE) is gratefully acknowledged. The authors kindly acknowledge Jan Willem de Rijk and Marcel Van Asselen for technical support in the laboratory

Funders
Netherlands Organization for Scientific Research (NWO-ECHO)
Netherlands Organization for Scientific Research (NOW-RELEASE)

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title = "Improving the Cycle Life of Solid-State Batteries by Addition of Oxide Nanoparticles to a Complex Hydride Solid Electrolyte",

abstract = "We report that the addition of silica nanoparticles to the iodide-substituted LiBH4 (h-Li(BH4)0.8(I)0.2) improves the ion conductivity and, remarkably, the cycle life of the all-solid state batteries. The h-Li(BH4)0.8(I)0.2-SiO2 was synthesized by mechanochemical treatment and possesses a Li+ conductivity of 9.3 × 10-5 S cm-1 at RT. It has an electrochemical stability window of about 2.5 V vs Li+/Li and an improved stability against Li-metal, compared to h-Li(BH4)0.8(I)0.2, owing to the addition of oxide nanoparticles, which we ascribed to a greater mechanical stability of the solid-state electrolyte. The all-solid state battery Li|h-Li(BH4)0.8(I)0.2-SiO2|TiS2 demonstrated a good long-term cyclability, i.e., over 200 cycles at C/20 and even including a C-rate of C/5, demonstrating that the addition of oxide nanoparticles improves the cycling stability of the electrolyte.",

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note = "Funding Information: Financial support from The Netherlands Organization for Scientific Research (NWO-ECHO and NOW-RELEASE) is gratefully acknowledged. The authors kindly acknowledge Jan Willem de Rijk and Marcel Van Asselen for technical support in the laboratory Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",

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AU - de Kort, Laura

AU - Ngene, Peter

AU - Baricco, Marcello

AU - de Jongh, Petra

AU - Gulino, Valerio

N1 - Funding Information: Financial support from The Netherlands Organization for Scientific Research (NWO-ECHO and NOW-RELEASE) is gratefully acknowledged. The authors kindly acknowledge Jan Willem de Rijk and Marcel Van Asselen for technical support in the laboratory Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.

PY - 2023/3/2

Y1 - 2023/3/2

N2 - We report that the addition of silica nanoparticles to the iodide-substituted LiBH4 (h-Li(BH4)0.8(I)0.2) improves the ion conductivity and, remarkably, the cycle life of the all-solid state batteries. The h-Li(BH4)0.8(I)0.2-SiO2 was synthesized by mechanochemical treatment and possesses a Li+ conductivity of 9.3 × 10-5 S cm-1 at RT. It has an electrochemical stability window of about 2.5 V vs Li+/Li and an improved stability against Li-metal, compared to h-Li(BH4)0.8(I)0.2, owing to the addition of oxide nanoparticles, which we ascribed to a greater mechanical stability of the solid-state electrolyte. The all-solid state battery Li|h-Li(BH4)0.8(I)0.2-SiO2|TiS2 demonstrated a good long-term cyclability, i.e., over 200 cycles at C/20 and even including a C-rate of C/5, demonstrating that the addition of oxide nanoparticles improves the cycling stability of the electrolyte.

AB - We report that the addition of silica nanoparticles to the iodide-substituted LiBH4 (h-Li(BH4)0.8(I)0.2) improves the ion conductivity and, remarkably, the cycle life of the all-solid state batteries. The h-Li(BH4)0.8(I)0.2-SiO2 was synthesized by mechanochemical treatment and possesses a Li+ conductivity of 9.3 × 10-5 S cm-1 at RT. It has an electrochemical stability window of about 2.5 V vs Li+/Li and an improved stability against Li-metal, compared to h-Li(BH4)0.8(I)0.2, owing to the addition of oxide nanoparticles, which we ascribed to a greater mechanical stability of the solid-state electrolyte. The all-solid state battery Li|h-Li(BH4)0.8(I)0.2-SiO2|TiS2 demonstrated a good long-term cyclability, i.e., over 200 cycles at C/20 and even including a C-rate of C/5, demonstrating that the addition of oxide nanoparticles improves the cycling stability of the electrolyte.

UR - https://www.scopus.com/pages/publications/85148672883

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DO - 10.1021/acs.jpcc.2c08902

M3 - Article

AN - SCOPUS:85148672883

SN - 1932-7447

VL - 127

SP - 3988

EP - 3995

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 8

ER -

Improving the Cycle Life of Solid-State Batteries by Addition of Oxide Nanoparticles to a Complex Hydride Solid Electrolyte

Abstract

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