Characterization of stable Solid electrolyte lithium silicate for thin film lithium battery

Atsuyoshi Nakagawa; Naoaki Kuwata; Yasutaka Matsuda; Junichi Kawamura

doi:10.1143/JPSJS.79SA.98

Characterization of stable Solid electrolyte lithium silicate for thin film lithium battery

Atsuyoshi Nakagawa, Naoaki Kuwata, Yasutaka Matsuda, Junichi Kawamura

NanoTerasu Co-Creation Promotion Division

Tohoku University

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

43 Citations (Scopus)

Abstract

Lithium silicate thin films were successfully deposited by pulsed laser deposition (PLD) technique using an ArF excimer laser. The ionic conductivities, the structures and the stability against CO₂ of the lithium silicate films were examined. The ionic conductivity value at 25°C was 2.5×10^-8 Scm^-1 for Li₂SiO₃ film and 4.1×10^-7 Scm^-1 for Li₄SiO ₄ film. Li₄SiO₄ film was found unstable to CO₂ to form Li₂CO₃, but Li₂SiO ₃ film was stable. Solid-state thin film batteries (TFB) consisting of an amorphous lithium silicate electrolyte, crystalline LiCoO₂ positive electrode and Li metal negative electrode were fabricated and characterized. The batteries performed good stabilities for cycles. Higher apparent capacity was obtained in the TFB using Li₄SiO₄ electrolyte than Li₂SiO₃, which is due to the higher conductivity of the Li₄SiO₄ film.

Original language	English
Pages (from-to)	98-101
Number of pages	4
Journal	Journal of the Physical Society of Japan
Volume	79
Issue number	SUPPL. A
DOIs	https://doi.org/10.1143/JPSJS.79SA.98
Publication status	Published - 2010

Keywords

Lithium secondary battery
Lithium silicate
PLD
Solid electrolyte
Thin film battery

Access to Document

10.1143/JPSJS.79SA.98

Cite this

@article{c93dc5bb78dc4732961fdd2aac0d70c6,

title = "Characterization of stable Solid electrolyte lithium silicate for thin film lithium battery",

abstract = "Lithium silicate thin films were successfully deposited by pulsed laser deposition (PLD) technique using an ArF excimer laser. The ionic conductivities, the structures and the stability against CO2 of the lithium silicate films were examined. The ionic conductivity value at 25°C was 2.5×10-8 Scm-1 for Li2SiO3 film and 4.1×10-7 Scm-1 for Li4SiO 4 film. Li4SiO4 film was found unstable to CO2 to form Li2CO3, but Li2SiO 3 film was stable. Solid-state thin film batteries (TFB) consisting of an amorphous lithium silicate electrolyte, crystalline LiCoO2 positive electrode and Li metal negative electrode were fabricated and characterized. The batteries performed good stabilities for cycles. Higher apparent capacity was obtained in the TFB using Li4SiO4 electrolyte than Li2SiO3, which is due to the higher conductivity of the Li4SiO4 film.",

keywords = "Lithium secondary battery, Lithium silicate, PLD, Solid electrolyte, Thin film battery",

author = "Atsuyoshi Nakagawa and Naoaki Kuwata and Yasutaka Matsuda and Junichi Kawamura",

year = "2010",

doi = "10.1143/JPSJS.79SA.98",

language = "English",

volume = "79",

pages = "98--101",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "The Physical Society of Japan",

number = "SUPPL. A",

}

TY - JOUR

T1 - Characterization of stable Solid electrolyte lithium silicate for thin film lithium battery

AU - Nakagawa, Atsuyoshi

AU - Kuwata, Naoaki

AU - Matsuda, Yasutaka

AU - Kawamura, Junichi

PY - 2010

Y1 - 2010

N2 - Lithium silicate thin films were successfully deposited by pulsed laser deposition (PLD) technique using an ArF excimer laser. The ionic conductivities, the structures and the stability against CO2 of the lithium silicate films were examined. The ionic conductivity value at 25°C was 2.5×10-8 Scm-1 for Li2SiO3 film and 4.1×10-7 Scm-1 for Li4SiO 4 film. Li4SiO4 film was found unstable to CO2 to form Li2CO3, but Li2SiO 3 film was stable. Solid-state thin film batteries (TFB) consisting of an amorphous lithium silicate electrolyte, crystalline LiCoO2 positive electrode and Li metal negative electrode were fabricated and characterized. The batteries performed good stabilities for cycles. Higher apparent capacity was obtained in the TFB using Li4SiO4 electrolyte than Li2SiO3, which is due to the higher conductivity of the Li4SiO4 film.

AB - Lithium silicate thin films were successfully deposited by pulsed laser deposition (PLD) technique using an ArF excimer laser. The ionic conductivities, the structures and the stability against CO2 of the lithium silicate films were examined. The ionic conductivity value at 25°C was 2.5×10-8 Scm-1 for Li2SiO3 film and 4.1×10-7 Scm-1 for Li4SiO 4 film. Li4SiO4 film was found unstable to CO2 to form Li2CO3, but Li2SiO 3 film was stable. Solid-state thin film batteries (TFB) consisting of an amorphous lithium silicate electrolyte, crystalline LiCoO2 positive electrode and Li metal negative electrode were fabricated and characterized. The batteries performed good stabilities for cycles. Higher apparent capacity was obtained in the TFB using Li4SiO4 electrolyte than Li2SiO3, which is due to the higher conductivity of the Li4SiO4 film.

KW - Lithium secondary battery

KW - Lithium silicate

KW - PLD

KW - Solid electrolyte

KW - Thin film battery

UR - http://www.scopus.com/inward/record.url?scp=77950309946&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77950309946&partnerID=8YFLogxK

U2 - 10.1143/JPSJS.79SA.98

DO - 10.1143/JPSJS.79SA.98

M3 - Article

AN - SCOPUS:77950309946

SN - 0031-9015

VL - 79

SP - 98

EP - 101

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - SUPPL. A

ER -

Characterization of stable Solid electrolyte lithium silicate for thin film lithium battery

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this