Preparation of LiNiO2 and LiMyNi1-yO2 (M = Co,Al) films by electrostatic spray deposition

Kohta Yamada; Nobuaki Sato; Takeo Fujino; Choong G. Lee; Isamu Uchida; Jan R. Selman

doi:10.1007/s100080050141

Preparation of LiNiO₂ and LiM_yNi_1-yO₂ (M = Co,Al) films by electrostatic spray deposition

Kohta Yamada, Nobuaki Sato, Takeo Fujino, Choong G. Lee, Isamu Uchida, Jan R. Selman

Division of Process and System Engineering

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

19 Citations (Scopus)

Abstract

Syntheses of LiNiO₂, LiCo_0.5Ni_0.5O₂, and LiAl_0.25Ni_0.75O₂ as thin films were carried out by electrostatic spray deposition (ESD) onto a gold substrate. Single-phase LiNiO₂ film was obtained using a precursor solution of Li(OCOCH₃) + Ni(OCOCH₃)₂/ethanol, and by heating the deposit at 700 °C under an oxygen stream: In the case of cobalt or aluminum doping, Co(NO₃)₂/ethanol or Al(NO₃)₃/ethanol were added to the precursor solution in a given ratio. X-ray diffractometry revealed that all films had a crystal structure of space group R3̄m; a = 2.879, c = 14.197 Å for LiNiO₂; a = 2.844, c = 14.152 Å for LiCo_0.5Ni_0.5O₂; a = 2.855, c = 14.148 Å for LiAl_0.25Ni_0.75O₂ (in hexagonal setting). Although these products were highly porous, it was observed that the average film thickness of LiNiO₂ increased almost proportionally with the deposition time. Electrochemical measurements (cyclic voltammetry, charge/discharge measurement at a constant current) were carried out in organic solutions of LiClO₄ (1 mol dm^-3 LiClO₄/propylene carbonate + ethylene carbonate). The results indicated that thin films fabricated by ESD were electrochemically active for lithium ion extraction/insertion. The effect of cobalt or aluminum doping on the voltammograms is also described.

Original language	English
Pages (from-to)	148-153
Number of pages	6
Journal	Journal of Solid State Electrochemistry
Volume	3
Issue number	3
DOIs	https://doi.org/10.1007/s100080050141
Publication status	Published - 1999 Jan 1

Keywords

Electrostatic spray deposition
Lithium ion secondary battery
Lithium nickel dioxide cathode
Thin film

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Electrochemistry
Electrical and Electronic Engineering

Access to Document

10.1007/s100080050141

Cite this

@article{bf2fc97ce4cd4dddbf6fa600fc31ecdb,

title = "Preparation of LiNiO2 and LiMyNi1-yO2 (M = Co,Al) films by electrostatic spray deposition",

abstract = "Syntheses of LiNiO2, LiCo0.5Ni0.5O2, and LiAl0.25Ni0.75O2 as thin films were carried out by electrostatic spray deposition (ESD) onto a gold substrate. Single-phase LiNiO2 film was obtained using a precursor solution of Li(OCOCH3) + Ni(OCOCH3)2/ethanol, and by heating the deposit at 700 °C under an oxygen stream: In the case of cobalt or aluminum doping, Co(NO3)2/ethanol or Al(NO3)3/ethanol were added to the precursor solution in a given ratio. X-ray diffractometry revealed that all films had a crystal structure of space group R{\=3}m; a = 2.879, c = 14.197 {\AA} for LiNiO2; a = 2.844, c = 14.152 {\AA} for LiCo0.5Ni0.5O2; a = 2.855, c = 14.148 {\AA} for LiAl0.25Ni0.75O2 (in hexagonal setting). Although these products were highly porous, it was observed that the average film thickness of LiNiO2 increased almost proportionally with the deposition time. Electrochemical measurements (cyclic voltammetry, charge/discharge measurement at a constant current) were carried out in organic solutions of LiClO4 (1 mol dm-3 LiClO4/propylene carbonate + ethylene carbonate). The results indicated that thin films fabricated by ESD were electrochemically active for lithium ion extraction/insertion. The effect of cobalt or aluminum doping on the voltammograms is also described.",

keywords = "Electrostatic spray deposition, Lithium ion secondary battery, Lithium nickel dioxide cathode, Thin film",

author = "Kohta Yamada and Nobuaki Sato and Takeo Fujino and Lee, {Choong G.} and Isamu Uchida and Selman, {Jan R.}",

year = "1999",

month = jan,

day = "1",

doi = "10.1007/s100080050141",

language = "English",

volume = "3",

pages = "148--153",

journal = "Journal of Solid State Electrochemistry",

issn = "1432-8488",

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TY - JOUR

T1 - Preparation of LiNiO2 and LiMyNi1-yO2 (M = Co,Al) films by electrostatic spray deposition

AU - Yamada, Kohta

AU - Sato, Nobuaki

AU - Fujino, Takeo

AU - Lee, Choong G.

AU - Uchida, Isamu

AU - Selman, Jan R.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Syntheses of LiNiO2, LiCo0.5Ni0.5O2, and LiAl0.25Ni0.75O2 as thin films were carried out by electrostatic spray deposition (ESD) onto a gold substrate. Single-phase LiNiO2 film was obtained using a precursor solution of Li(OCOCH3) + Ni(OCOCH3)2/ethanol, and by heating the deposit at 700 °C under an oxygen stream: In the case of cobalt or aluminum doping, Co(NO3)2/ethanol or Al(NO3)3/ethanol were added to the precursor solution in a given ratio. X-ray diffractometry revealed that all films had a crystal structure of space group R3̄m; a = 2.879, c = 14.197 Å for LiNiO2; a = 2.844, c = 14.152 Å for LiCo0.5Ni0.5O2; a = 2.855, c = 14.148 Å for LiAl0.25Ni0.75O2 (in hexagonal setting). Although these products were highly porous, it was observed that the average film thickness of LiNiO2 increased almost proportionally with the deposition time. Electrochemical measurements (cyclic voltammetry, charge/discharge measurement at a constant current) were carried out in organic solutions of LiClO4 (1 mol dm-3 LiClO4/propylene carbonate + ethylene carbonate). The results indicated that thin films fabricated by ESD were electrochemically active for lithium ion extraction/insertion. The effect of cobalt or aluminum doping on the voltammograms is also described.

AB - Syntheses of LiNiO2, LiCo0.5Ni0.5O2, and LiAl0.25Ni0.75O2 as thin films were carried out by electrostatic spray deposition (ESD) onto a gold substrate. Single-phase LiNiO2 film was obtained using a precursor solution of Li(OCOCH3) + Ni(OCOCH3)2/ethanol, and by heating the deposit at 700 °C under an oxygen stream: In the case of cobalt or aluminum doping, Co(NO3)2/ethanol or Al(NO3)3/ethanol were added to the precursor solution in a given ratio. X-ray diffractometry revealed that all films had a crystal structure of space group R3̄m; a = 2.879, c = 14.197 Å for LiNiO2; a = 2.844, c = 14.152 Å for LiCo0.5Ni0.5O2; a = 2.855, c = 14.148 Å for LiAl0.25Ni0.75O2 (in hexagonal setting). Although these products were highly porous, it was observed that the average film thickness of LiNiO2 increased almost proportionally with the deposition time. Electrochemical measurements (cyclic voltammetry, charge/discharge measurement at a constant current) were carried out in organic solutions of LiClO4 (1 mol dm-3 LiClO4/propylene carbonate + ethylene carbonate). The results indicated that thin films fabricated by ESD were electrochemically active for lithium ion extraction/insertion. The effect of cobalt or aluminum doping on the voltammograms is also described.

KW - Electrostatic spray deposition

KW - Lithium ion secondary battery

KW - Lithium nickel dioxide cathode

KW - Thin film

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