Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries

Kang Ho Shin; Jehee Park; Sul Ki Park; Puritut Nakhanivej; Soo Min Hwang; Youngsik Kim; Ho Seok Park

doi:10.1016/j.jiec.2018.12.025

Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries

Kang Ho Shin
, Jehee Park
, Sul Ki Park
, Puritut Nakhanivej
, Soo Min Hwang
, Youngsik Kim
, Ho Seok Park

Department of Chemical Engineering

Sungkyunkwan University
Ulsan National Institute of Science and Technology
4TOONE Corporation

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

25 Scopus citations

Abstract

Herein, we report synthesis of Co₃V₂O₈ nanoparticles for an electrocatalyst of seawater batteries. The cell using Co₃V₂O₈ achieves a higher voltage efficiency of ∼76% than ∼72% of the cell without catalyst. In addition, the Co₃V₂O₈ shows a good rate capability with reduced voltage gaps and an increased power density of ∼5.9 mW cm⁻². This cell is stable over 20 cycles for 400 h with reduced voltage gap of ∼0.95 V. These findings are attributed to the facilitated redox kinetics of the clustered Co₃V₂O₈ nanoparticles arising from the optimal metal–OH bond strength and large surface area.

Original language	English
Pages (from-to)	250-254
Number of pages	5
Journal	Journal of Industrial and Engineering Chemistry
Volume	72
DOIs	https://doi.org/10.1016/j.jiec.2018.12.025
State	Published - 25 Apr 2019

Keywords

Electrocatalyst
Mixed metal oxide
Nanoparticles
Rechargeable battery
Seawater battery

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10.1016/j.jiec.2018.12.025

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title = "Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries",

abstract = "Herein, we report synthesis of Co3V2O8 nanoparticles for an electrocatalyst of seawater batteries. The cell using Co3V2O8 achieves a higher voltage efficiency of ∼76\% than ∼72\% of the cell without catalyst. In addition, the Co3V2O8 shows a good rate capability with reduced voltage gaps and an increased power density of ∼5.9 mW cm−2. This cell is stable over 20 cycles for 400 h with reduced voltage gap of ∼0.95 V. These findings are attributed to the facilitated redox kinetics of the clustered Co3V2O8 nanoparticles arising from the optimal metal–OH bond strength and large surface area.",

keywords = "Electrocatalyst, Mixed metal oxide, Nanoparticles, Rechargeable battery, Seawater battery",

author = "Shin, \{Kang Ho\} and Jehee Park and Park, \{Sul Ki\} and Puritut Nakhanivej and Hwang, \{Soo Min\} and Youngsik Kim and Park, \{Ho Seok\}",

note = "Publisher Copyright: {\textcopyright} 2018 The Korean Society of Industrial and Engineering Chemistry",

year = "2019",

month = apr,

day = "25",

doi = "10.1016/j.jiec.2018.12.025",

language = "English",

volume = "72",

pages = "250--254",

journal = "Journal of Industrial and Engineering Chemistry",

issn = "1226-086X",

publisher = "Korean Society of Industrial Engineering Chemistry",

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TY - JOUR

T1 - Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries

AU - Shin, Kang Ho

AU - Park, Jehee

AU - Park, Sul Ki

AU - Nakhanivej, Puritut

AU - Hwang, Soo Min

AU - Kim, Youngsik

AU - Park, Ho Seok

PY - 2019/4/25

Y1 - 2019/4/25

N2 - Herein, we report synthesis of Co3V2O8 nanoparticles for an electrocatalyst of seawater batteries. The cell using Co3V2O8 achieves a higher voltage efficiency of ∼76% than ∼72% of the cell without catalyst. In addition, the Co3V2O8 shows a good rate capability with reduced voltage gaps and an increased power density of ∼5.9 mW cm−2. This cell is stable over 20 cycles for 400 h with reduced voltage gap of ∼0.95 V. These findings are attributed to the facilitated redox kinetics of the clustered Co3V2O8 nanoparticles arising from the optimal metal–OH bond strength and large surface area.

AB - Herein, we report synthesis of Co3V2O8 nanoparticles for an electrocatalyst of seawater batteries. The cell using Co3V2O8 achieves a higher voltage efficiency of ∼76% than ∼72% of the cell without catalyst. In addition, the Co3V2O8 shows a good rate capability with reduced voltage gaps and an increased power density of ∼5.9 mW cm−2. This cell is stable over 20 cycles for 400 h with reduced voltage gap of ∼0.95 V. These findings are attributed to the facilitated redox kinetics of the clustered Co3V2O8 nanoparticles arising from the optimal metal–OH bond strength and large surface area.

KW - Electrocatalyst

KW - Mixed metal oxide

KW - Nanoparticles

KW - Rechargeable battery

KW - Seawater battery

UR - https://www.scopus.com/pages/publications/85059301280

U2 - 10.1016/j.jiec.2018.12.025

DO - 10.1016/j.jiec.2018.12.025

M3 - Article

AN - SCOPUS:85059301280

SN - 1226-086X

VL - 72

SP - 250

EP - 254

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries

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