TY - JOUR
T1 - Improving the Cycle Life of Solid-State Batteries by Addition of Oxide Nanoparticles to a Complex Hydride Solid Electrolyte
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 - http://www.scopus.com/inward/record.url?scp=85148672883&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.2c08902
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 -