Characterization of low-temperature solution-processed LiCoO2 thin-film cathode with molecular weight control of polyvinylpyrrolidone

Seungwoo Yu; Chahwan Hwang; Do Jeon Kim; Joohyung Park; Seonhyoung Kim; Jongin Hong; Jihyun An; Tae Hoon Lee; Myung Gil Kim

doi:10.1016/j.tsf.2018.07.011

Characterization of low-temperature solution-processed LiCoO₂ thin-film cathode with molecular weight control of polyvinylpyrrolidone

Seungwoo Yu
, Chahwan Hwang
, Do Jeon Kim
, Joohyung Park
, Seonhyoung Kim
, Jongin Hong
, Jihyun An
, Tae Hoon Lee
, Myung Gil Kim

Chung-Ang University
Seoul National University
Kwangwoon University

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

4 Scopus citations

Abstract

Numerous LiCoO₂ cathode thin-films have been prepared for all-solid-state thin-film battery applications. Preparation methods include sputtering, pulsed laser deposition, electron beam evaporation, screen printing, and spin coating. When compared to vacuum deposition methods, the solution-processed fabrication methods could result in significant cost savings and large-area production. Unfortunately, high-temperature annealing (T_anneal > 700 °C) of LiCoO₂ cathode thin film is usually crucial for achieving a high performance layered phase. Here, we report on phase control of spin-coated LiCoO₂ thin film by varying the molecular weight of polyvinylpyrrolidone (PVP) at low temperature. We could achieve thick and smooth film morphology by optimizing the PVP molecular weight. This method could be a promising cathode layer for low-cost thin-film batteries.

Original language	English
Pages (from-to)	46-52
Number of pages	7
Journal	Thin Solid Films
Volume	661
DOIs	https://doi.org/10.1016/j.tsf.2018.07.011
State	Published - 1 Sep 2018
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Lithium cobalt oxide
Nanoparticles
Solid-state thin film battery
Solution process
Thin film

Access to Document

10.1016/j.tsf.2018.07.011

Cite this

@article{429a20e1014a4c5dbb14f0529b357d37,

title = "Characterization of low-temperature solution-processed LiCoO2 thin-film cathode with molecular weight control of polyvinylpyrrolidone",

abstract = "Numerous LiCoO2 cathode thin-films have been prepared for all-solid-state thin-film battery applications. Preparation methods include sputtering, pulsed laser deposition, electron beam evaporation, screen printing, and spin coating. When compared to vacuum deposition methods, the solution-processed fabrication methods could result in significant cost savings and large-area production. Unfortunately, high-temperature annealing (Tanneal > 700 °C) of LiCoO2 cathode thin film is usually crucial for achieving a high performance layered phase. Here, we report on phase control of spin-coated LiCoO2 thin film by varying the molecular weight of polyvinylpyrrolidone (PVP) at low temperature. We could achieve thick and smooth film morphology by optimizing the PVP molecular weight. This method could be a promising cathode layer for low-cost thin-film batteries.",

keywords = "Lithium cobalt oxide, Nanoparticles, Solid-state thin film battery, Solution process, Thin film",

author = "Seungwoo Yu and Chahwan Hwang and Kim, \{Do Jeon\} and Joohyung Park and Seonhyoung Kim and Jongin Hong and Jihyun An and Lee, \{Tae Hoon\} and Kim, \{Myung Gil\}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = sep,

day = "1",

doi = "10.1016/j.tsf.2018.07.011",

language = "English",

volume = "661",

pages = "46--52",

journal = "Thin Solid Films",

issn = "0040-6090",

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TY - JOUR

T1 - Characterization of low-temperature solution-processed LiCoO2 thin-film cathode with molecular weight control of polyvinylpyrrolidone

AU - Yu, Seungwoo

AU - Hwang, Chahwan

AU - Kim, Do Jeon

AU - Park, Joohyung

AU - Kim, Seonhyoung

AU - Hong, Jongin

AU - An, Jihyun

AU - Lee, Tae Hoon

AU - Kim, Myung Gil

PY - 2018/9/1

Y1 - 2018/9/1

N2 - Numerous LiCoO2 cathode thin-films have been prepared for all-solid-state thin-film battery applications. Preparation methods include sputtering, pulsed laser deposition, electron beam evaporation, screen printing, and spin coating. When compared to vacuum deposition methods, the solution-processed fabrication methods could result in significant cost savings and large-area production. Unfortunately, high-temperature annealing (Tanneal > 700 °C) of LiCoO2 cathode thin film is usually crucial for achieving a high performance layered phase. Here, we report on phase control of spin-coated LiCoO2 thin film by varying the molecular weight of polyvinylpyrrolidone (PVP) at low temperature. We could achieve thick and smooth film morphology by optimizing the PVP molecular weight. This method could be a promising cathode layer for low-cost thin-film batteries.

AB - Numerous LiCoO2 cathode thin-films have been prepared for all-solid-state thin-film battery applications. Preparation methods include sputtering, pulsed laser deposition, electron beam evaporation, screen printing, and spin coating. When compared to vacuum deposition methods, the solution-processed fabrication methods could result in significant cost savings and large-area production. Unfortunately, high-temperature annealing (Tanneal > 700 °C) of LiCoO2 cathode thin film is usually crucial for achieving a high performance layered phase. Here, we report on phase control of spin-coated LiCoO2 thin film by varying the molecular weight of polyvinylpyrrolidone (PVP) at low temperature. We could achieve thick and smooth film morphology by optimizing the PVP molecular weight. This method could be a promising cathode layer for low-cost thin-film batteries.

KW - Lithium cobalt oxide

KW - Nanoparticles

KW - Solid-state thin film battery

KW - Solution process

KW - Thin film

UR - https://www.scopus.com/pages/publications/85049979640

U2 - 10.1016/j.tsf.2018.07.011

DO - 10.1016/j.tsf.2018.07.011

M3 - Article

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SN - 0040-6090

VL - 661

SP - 46

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JO - Thin Solid Films

JF - Thin Solid Films

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