Bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films

Kazunori Nishio; Koji Horiba; Naoto Nakamura; Miho Kitamura; Hiroshi Kumigashira; Ryota Shimizu; Taro Hitosugi

doi:10.1016/j.jpowsour.2019.01.067

Bottom-current-collector-free thin-film batteries using LiNi_0.8Co_0.2O₂ epitaxial thin films

Kazunori Nishio, Koji Horiba, Naoto Nakamura, Miho Kitamura, Hiroshi Kumigashira, Ryota Shimizu, Taro Hitosugi

Division of Organic- and Biomaterials Research

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

3 Citations (Scopus)

Abstract

The decrease in the resistance at solid electrolyte and electrode interfaces has become a critical issue in the development of solid-state lithium batteries. To understand the ionic transport properties across solid electrolyte and electrode interfaces, thin-film batteries consisting of flat epitaxial films are of considerable importance. Herein, we report the operation of bottom-current-collector-free thin-film batteries using LiNi_0.8Co_0.2O₂ epitaxial thin films. As the bottom current collector is not inserted between the substrates and LiNi_0.8Co_0.2O₂, the surface of LiNi_0.8Co_0.2O₂ is very flat, with a surface roughness average of approximately 0.44 nm. This study proposes a very flat electrode surface suitable for the investigation of interfacial phenomena at solid electrolyte and electrode interfaces.

Original language	English
Pages (from-to)	56-61
Number of pages	6
Journal	Journal of Power Sources
Volume	416
DOIs	https://doi.org/10.1016/j.jpowsour.2019.01.067
Publication status	Published - 2019 Mar 15

Keywords

Epitaxial thin film
Interface resistance
LiNiCoO
Pulsed laser deposition
Solid-state battery

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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title = "Bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films",

abstract = "The decrease in the resistance at solid electrolyte and electrode interfaces has become a critical issue in the development of solid-state lithium batteries. To understand the ionic transport properties across solid electrolyte and electrode interfaces, thin-film batteries consisting of flat epitaxial films are of considerable importance. Herein, we report the operation of bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films. As the bottom current collector is not inserted between the substrates and LiNi0.8Co0.2O2, the surface of LiNi0.8Co0.2O2 is very flat, with a surface roughness average of approximately 0.44 nm. This study proposes a very flat electrode surface suitable for the investigation of interfacial phenomena at solid electrolyte and electrode interfaces.",

keywords = "Epitaxial thin film, Interface resistance, LiNiCoO, Pulsed laser deposition, Solid-state battery",

author = "Kazunori Nishio and Koji Horiba and Naoto Nakamura and Miho Kitamura and Hiroshi Kumigashira and Ryota Shimizu and Taro Hitosugi",

note = "Funding Information: This research was supported by JST-CREST and TOYOTA MOTOR CORPORATION . K. N. acknowledges funding from JSPS Kakenhi Grant no. 17H06674 , and no. 18K14314 . T. H. acknowledges funding from JKA Grant No. 109 and JSPS Kakenhi Grant No. 18H03876 . We thank Toray Research Center, Inc. for the RBS-NRA measurements. Raman spectroscopy measurements were performed at Ookayama Materials Analysis Division, Technical Department, Tokyo Institute of Technology. ",

year = "2019",

month = mar,

day = "15",

doi = "10.1016/j.jpowsour.2019.01.067",

language = "English",

volume = "416",

pages = "56--61",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

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TY - JOUR

T1 - Bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films

AU - Nishio, Kazunori

AU - Horiba, Koji

AU - Nakamura, Naoto

AU - Kitamura, Miho

AU - Kumigashira, Hiroshi

AU - Shimizu, Ryota

AU - Hitosugi, Taro

N1 - Funding Information: This research was supported by JST-CREST and TOYOTA MOTOR CORPORATION . K. N. acknowledges funding from JSPS Kakenhi Grant no. 17H06674 , and no. 18K14314 . T. H. acknowledges funding from JKA Grant No. 109 and JSPS Kakenhi Grant No. 18H03876 . We thank Toray Research Center, Inc. for the RBS-NRA measurements. Raman spectroscopy measurements were performed at Ookayama Materials Analysis Division, Technical Department, Tokyo Institute of Technology.

PY - 2019/3/15

Y1 - 2019/3/15

N2 - The decrease in the resistance at solid electrolyte and electrode interfaces has become a critical issue in the development of solid-state lithium batteries. To understand the ionic transport properties across solid electrolyte and electrode interfaces, thin-film batteries consisting of flat epitaxial films are of considerable importance. Herein, we report the operation of bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films. As the bottom current collector is not inserted between the substrates and LiNi0.8Co0.2O2, the surface of LiNi0.8Co0.2O2 is very flat, with a surface roughness average of approximately 0.44 nm. This study proposes a very flat electrode surface suitable for the investigation of interfacial phenomena at solid electrolyte and electrode interfaces.

AB - The decrease in the resistance at solid electrolyte and electrode interfaces has become a critical issue in the development of solid-state lithium batteries. To understand the ionic transport properties across solid electrolyte and electrode interfaces, thin-film batteries consisting of flat epitaxial films are of considerable importance. Herein, we report the operation of bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films. As the bottom current collector is not inserted between the substrates and LiNi0.8Co0.2O2, the surface of LiNi0.8Co0.2O2 is very flat, with a surface roughness average of approximately 0.44 nm. This study proposes a very flat electrode surface suitable for the investigation of interfacial phenomena at solid electrolyte and electrode interfaces.

KW - Epitaxial thin film

KW - Interface resistance

KW - LiNiCoO

KW - Pulsed laser deposition

KW - Solid-state battery

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