TY - JOUR
T1 - Low-Resistive LiCoO2/Li1.3Al0.3Ti2(PO4)3 Interface Formation by Low-Temperature Annealing Using Aerosol Deposition
AU - Sakakura, Miyuki
AU - Suzuki, Yasuhiro
AU - Yamamoto, Takayuki
AU - Yamamoto, Yuta
AU - Motoyama, Munekazu
AU - Iriyama, Yasutoshi
N1 - Funding Information:
This work was supported by JST ALCA-SPRING (JPMJAL1301) and by JSPS KAKENHI grant nos. JP19H05813 and JP19H05815 (Grant-in-Aid for Scientific Research on Innovative Areas) “Interface IONICS.” Powder-size analysis by laser diffraction instruments was conducted at the NIMS Battery Research Platform and was supported by the NIMS Joint Research Hub Program.
Funding Information:
This work was supported by JST ALCA‐SPRING (JPMJAL1301) and by JSPS KAKENHI grant nos. JP19H05813 and JP19H05815 (Grant‐in‐Aid for Scientific Research on Innovative Areas) “Interface IONICS.” Powder‐size analysis by laser diffraction instruments was conducted at the NIMS Battery Research Platform and was supported by the NIMS Joint Research Hub Program.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/5
Y1 - 2021/5
N2 - Interfacial resistance at electrode-high Li+ conductive solid electrolytes must be reduced well to develop high-power all-solid-state batteries using oxide-based solid electrolytes (Ox-SSBs). Herein, crystalline electrode films of LiCoO2 (LCO) are formed on a high Li+ conductive crystalline-glass solid electrolyte sheet, Li1.3Al0.3Ti2(PO4)3 (LATP) (σ25 °C = 1 × 10−4 S cm−1), at room temperature by aerosol deposition (AD), and the effects of the annealing temperature on the interfacial resistivities (Rint) at the LCO/LATP are investigated. The Rint visibly increases by annealing over 500 °C with the growth of Co3O4 as a reactant. In contrast, Rint is reduced to ≈100 Ω cm2 by low-temperature annealing at 250–350 °C due to superior contact through the structural rearrangement of an artificial metastable interface formed by the AD. These results are applied to bulk-type Ox-SSB, Li/Li7La3Zr2O12(LLZ)/LCO–LATP, and our best Ox-SSB delivers a discharge capacity of 100 mA cm−2 at 100 °C.
AB - Interfacial resistance at electrode-high Li+ conductive solid electrolytes must be reduced well to develop high-power all-solid-state batteries using oxide-based solid electrolytes (Ox-SSBs). Herein, crystalline electrode films of LiCoO2 (LCO) are formed on a high Li+ conductive crystalline-glass solid electrolyte sheet, Li1.3Al0.3Ti2(PO4)3 (LATP) (σ25 °C = 1 × 10−4 S cm−1), at room temperature by aerosol deposition (AD), and the effects of the annealing temperature on the interfacial resistivities (Rint) at the LCO/LATP are investigated. The Rint visibly increases by annealing over 500 °C with the growth of Co3O4 as a reactant. In contrast, Rint is reduced to ≈100 Ω cm2 by low-temperature annealing at 250–350 °C due to superior contact through the structural rearrangement of an artificial metastable interface formed by the AD. These results are applied to bulk-type Ox-SSB, Li/Li7La3Zr2O12(LLZ)/LCO–LATP, and our best Ox-SSB delivers a discharge capacity of 100 mA cm−2 at 100 °C.
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U2 - 10.1002/ente.202001059
DO - 10.1002/ente.202001059
M3 - Article
AN - SCOPUS:85102562235
VL - 9
JO - Energy Technology
JF - Energy Technology
SN - 2194-4288
IS - 5
M1 - 2001059
ER -