Microvoltammetry for cathode materials at elevated temperatures: Electrochemical stability of single particles

Kaoru Dokko; Soichi Horikoshi; Takashi Itoh; Matsuhiko Nishizawa; Mohamed Mohamedi; Isamu Uchida

doi:10.1016/S0378-7753(00)00456-0

Microvoltammetry for cathode materials at elevated temperatures: Electrochemical stability of single particles

Kaoru Dokko, Soichi Horikoshi, Takashi Itoh, Matsuhiko Nishizawa, Mohamed Mohamedi, Isamu Uchida

Research output: Contribution to journal › Conference article › peer-review

57 Citations (Scopus)

Abstract

The electrochemical stability of single particles of cathode materials (LiMn₂O₄, Li_1.10Cr_0.048Mn_1.852O₄, LiCoO₂ and LiNi_0.85Co_0.15O₂) was investigated by means of a microelectrode technique at 25 °C and 50 °C. The cycle stability was evaluated by multi-cyclic voltammetry. LiMn₂O₄ showed good cycle stability in LiClO₄/propylene carbonate (PC)+ethylene carbonate (EC) and LiBF₄/PC+EC solutions even at 50 °C. On the contrary, in LiPF₆/PC+EC, significant capacity fading during charge-discharge was observed at 50 °C. The cycle stability of LiMn₂O₄ in the latter solution was improved by partial substitution of Mn by Cr and Li. Regarding LiCoO₂, its cycle life in LiClO₄/PC+EC at 50 °C was unsatisfactory when the potential was scanned between 3.60 and 4.30 V. On the other hand, LiCoO₂ retained 90% of its capacity when the potential scan was limited to 4.00 V. LiNi_0.85Co_0.15O₂ showed similar trend at 50 °C.

Original language	English
Pages (from-to)	109-115
Number of pages	7
Journal	Journal of Power Sources
Volume	90
Issue number	1
DOIs	https://doi.org/10.1016/S0378-7753(00)00456-0
Publication status	Published - 2000 Sep
Event	The 1999 International Symposium on Rechargeable - Kyoto, Jpn Duration: 1999 Nov 14 → 1999 Nov 16

ASJC Scopus subject areas

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

UN SDGs

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

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10.1016/S0378-7753(00)00456-0

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@article{6b5b8b7a77404a88ae2c42e8a04138be,

title = "Microvoltammetry for cathode materials at elevated temperatures: Electrochemical stability of single particles",

abstract = "The electrochemical stability of single particles of cathode materials (LiMn2O4, Li1.10Cr0.048Mn1.852O4, LiCoO2 and LiNi0.85Co0.15O2) was investigated by means of a microelectrode technique at 25 °C and 50 °C. The cycle stability was evaluated by multi-cyclic voltammetry. LiMn2O4 showed good cycle stability in LiClO4/propylene carbonate (PC)+ethylene carbonate (EC) and LiBF4/PC+EC solutions even at 50 °C. On the contrary, in LiPF6/PC+EC, significant capacity fading during charge-discharge was observed at 50 °C. The cycle stability of LiMn2O4 in the latter solution was improved by partial substitution of Mn by Cr and Li. Regarding LiCoO2, its cycle life in LiClO4/PC+EC at 50 °C was unsatisfactory when the potential was scanned between 3.60 and 4.30 V. On the other hand, LiCoO2 retained 90% of its capacity when the potential scan was limited to 4.00 V. LiNi0.85Co0.15O2 showed similar trend at 50 °C.",

author = "Kaoru Dokko and Soichi Horikoshi and Takashi Itoh and Matsuhiko Nishizawa and Mohamed Mohamedi and Isamu Uchida",

note = "Funding Information: The present work was supported by Grant-in-Aid for Scientific Research (B) (No. 10555297) from The Ministry of Education, Science and Culture, Japan.; The 1999 International Symposium on Rechargeable ; Conference date: 14-11-1999 Through 16-11-1999",

year = "2000",

month = sep,

doi = "10.1016/S0378-7753(00)00456-0",

language = "English",

volume = "90",

pages = "109--115",

journal = "Journal of Power Sources",

issn = "0378-7753",

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TY - JOUR

T1 - Microvoltammetry for cathode materials at elevated temperatures

T2 - The 1999 International Symposium on Rechargeable

AU - Dokko, Kaoru

AU - Horikoshi, Soichi

AU - Itoh, Takashi

AU - Nishizawa, Matsuhiko

AU - Mohamedi, Mohamed

AU - Uchida, Isamu

N1 - Funding Information: The present work was supported by Grant-in-Aid for Scientific Research (B) (No. 10555297) from The Ministry of Education, Science and Culture, Japan.

PY - 2000/9

Y1 - 2000/9

N2 - The electrochemical stability of single particles of cathode materials (LiMn2O4, Li1.10Cr0.048Mn1.852O4, LiCoO2 and LiNi0.85Co0.15O2) was investigated by means of a microelectrode technique at 25 °C and 50 °C. The cycle stability was evaluated by multi-cyclic voltammetry. LiMn2O4 showed good cycle stability in LiClO4/propylene carbonate (PC)+ethylene carbonate (EC) and LiBF4/PC+EC solutions even at 50 °C. On the contrary, in LiPF6/PC+EC, significant capacity fading during charge-discharge was observed at 50 °C. The cycle stability of LiMn2O4 in the latter solution was improved by partial substitution of Mn by Cr and Li. Regarding LiCoO2, its cycle life in LiClO4/PC+EC at 50 °C was unsatisfactory when the potential was scanned between 3.60 and 4.30 V. On the other hand, LiCoO2 retained 90% of its capacity when the potential scan was limited to 4.00 V. LiNi0.85Co0.15O2 showed similar trend at 50 °C.

AB - The electrochemical stability of single particles of cathode materials (LiMn2O4, Li1.10Cr0.048Mn1.852O4, LiCoO2 and LiNi0.85Co0.15O2) was investigated by means of a microelectrode technique at 25 °C and 50 °C. The cycle stability was evaluated by multi-cyclic voltammetry. LiMn2O4 showed good cycle stability in LiClO4/propylene carbonate (PC)+ethylene carbonate (EC) and LiBF4/PC+EC solutions even at 50 °C. On the contrary, in LiPF6/PC+EC, significant capacity fading during charge-discharge was observed at 50 °C. The cycle stability of LiMn2O4 in the latter solution was improved by partial substitution of Mn by Cr and Li. Regarding LiCoO2, its cycle life in LiClO4/PC+EC at 50 °C was unsatisfactory when the potential was scanned between 3.60 and 4.30 V. On the other hand, LiCoO2 retained 90% of its capacity when the potential scan was limited to 4.00 V. LiNi0.85Co0.15O2 showed similar trend at 50 °C.

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U2 - 10.1016/S0378-7753(00)00456-0

DO - 10.1016/S0378-7753(00)00456-0

M3 - Conference article

AN - SCOPUS:0033692305

VL - 90

SP - 109

EP - 115

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 1

Y2 - 14 November 1999 through 16 November 1999

ER -

Microvoltammetry for cathode materials at elevated temperatures: Electrochemical stability of single particles

Abstract

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