Calcium nitrate (Ca(NO3)2)-based inorganic salt electrode for supercapacitor with long-cycle life performance

Sangeun Cho; Jaeseok Han; Jongmin Kim; Yongcheol Jo; Hyeonseok Woo; Seongwoo Lee; Abu Talha Aqueel Ahmed; Harish C. Chavan; S. M. Pawar; Jayavant L. Gunjakar; Jungwon Kwak; Youngsin Park; Akbar I. Inamdar; Hyunjeong Kim; Hyungsang Kim; Hyunsik Im

doi:10.1016/j.cap.2017.05.013

Calcium nitrate (Ca(NO₃)₂)-based inorganic salt electrode for supercapacitor with long-cycle life performance

Sangeun Cho, Jaeseok Han, Jongmin Kim, Yongcheol Jo, Hyeonseok Woo, Seongwoo Lee, Abu Talha Aqueel Ahmed, Harish C. Chavan, S. M. Pawar, Jayavant L. Gunjakar, Jungwon Kwak, Youngsin Park, Akbar I. Inamdar, Hyunjeong Kim, Hyungsang Kim, Hyunsik Im

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19 Scopus citations

Abstract

A novel water-soluble inorganic Ca(NO₃)₂ salt electrode is investigated for its pseudocapacitance in an aqueous KOH electrolyte. Commercially available Ca(NO₃)₂ salt is directly used as the key electrode material. The supercapacitor electrode contains Ca(NO₃)₂ salt, carbon black, and polyvinylidene fluoride (PVDF) in a ratio of 80:10:10. The Ca(NO₃)₂-based electrode demonstrates an exceptionally long life cycling stability, and a reasonably sound specific capacitance of 234 F/g is obtained at a current density of 3 A/g. Via chemical and electrochemical reactions, the in-situ activation of the Ca(NO₃)₂ forms an intermediate CaO which contributes to the pseudocapacitance of the electrode. The electrode undergoes a reversible redox reaction between Cu²⁺ ↔ Cu⁺ during the charge-discharge process. Superior rate capability and excellent specific capacitance retention of ∼120% over 2000 cycles are achieved compared with other inorganic salt electrodes.

Original language	English
Pages (from-to)	1189-1193
Number of pages	5
Journal	Current Applied Physics
Volume	17
Issue number	9
DOIs	https://doi.org/10.1016/j.cap.2017.05.013
State	Published - Sep 2017

Keywords

Ca(NO)
Energy storage
Inorganic salt electrode
Supercapacitor

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Cho, S., Han, J., Kim, J., Jo, Y., Woo, H., Lee, S., Aqueel Ahmed, A. T., Chavan, H. C., Pawar, S. M., Gunjakar, J. L., Kwak, J., Park, Y., Inamdar, A. I., Kim, H., Kim, H., & Im, H. (2017). Calcium nitrate (Ca(NO₃)₂)-based inorganic salt electrode for supercapacitor with long-cycle life performance. Current Applied Physics, 17(9), 1189-1193. https://doi.org/10.1016/j.cap.2017.05.013

@article{5b77f3937c67463d8f99fbfde65584bc,

title = "Calcium nitrate (Ca(NO3)2)-based inorganic salt electrode for supercapacitor with long-cycle life performance",

abstract = "A novel water-soluble inorganic Ca(NO3)2 salt electrode is investigated for its pseudocapacitance in an aqueous KOH electrolyte. Commercially available Ca(NO3)2 salt is directly used as the key electrode material. The supercapacitor electrode contains Ca(NO3)2 salt, carbon black, and polyvinylidene fluoride (PVDF) in a ratio of 80:10:10. The Ca(NO3)2-based electrode demonstrates an exceptionally long life cycling stability, and a reasonably sound specific capacitance of 234 F/g is obtained at a current density of 3 A/g. Via chemical and electrochemical reactions, the in-situ activation of the Ca(NO3)2 forms an intermediate CaO which contributes to the pseudocapacitance of the electrode. The electrode undergoes a reversible redox reaction between Cu2+ ↔ Cu+ during the charge-discharge process. Superior rate capability and excellent specific capacitance retention of ∼120% over 2000 cycles are achieved compared with other inorganic salt electrodes.",

keywords = "Ca(NO), Energy storage, Inorganic salt electrode, Supercapacitor",

author = "Sangeun Cho and Jaeseok Han and Jongmin Kim and Yongcheol Jo and Hyeonseok Woo and Seongwoo Lee and {Aqueel Ahmed}, {Abu Talha} and Chavan, {Harish C.} and Pawar, {S. M.} and Gunjakar, {Jayavant L.} and Jungwon Kwak and Youngsin Park and Inamdar, {Akbar I.} and Hyunjeong Kim and Hyungsang Kim and Hyunsik Im",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = sep,

doi = "10.1016/j.cap.2017.05.013",

language = "English",

volume = "17",

pages = "1189--1193",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

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Cho, S, Han, J, Kim, J, Jo, Y, Woo, H, Lee, S, Aqueel Ahmed, AT, Chavan, HC, Pawar, SM, Gunjakar, JL, Kwak, J, Park, Y, Inamdar, AI, Kim, H, Kim, H & Im, H 2017, 'Calcium nitrate (Ca(NO₃)₂)-based inorganic salt electrode for supercapacitor with long-cycle life performance', Current Applied Physics, vol. 17, no. 9, pp. 1189-1193. https://doi.org/10.1016/j.cap.2017.05.013

TY - JOUR

T1 - Calcium nitrate (Ca(NO3)2)-based inorganic salt electrode for supercapacitor with long-cycle life performance

AU - Cho, Sangeun

AU - Han, Jaeseok

AU - Kim, Jongmin

AU - Jo, Yongcheol

AU - Woo, Hyeonseok

AU - Lee, Seongwoo

AU - Aqueel Ahmed, Abu Talha

AU - Chavan, Harish C.

AU - Pawar, S. M.

AU - Gunjakar, Jayavant L.

AU - Kwak, Jungwon

AU - Park, Youngsin

AU - Inamdar, Akbar I.

AU - Kim, Hyunjeong

AU - Kim, Hyungsang

AU - Im, Hyunsik

PY - 2017/9

Y1 - 2017/9

N2 - A novel water-soluble inorganic Ca(NO3)2 salt electrode is investigated for its pseudocapacitance in an aqueous KOH electrolyte. Commercially available Ca(NO3)2 salt is directly used as the key electrode material. The supercapacitor electrode contains Ca(NO3)2 salt, carbon black, and polyvinylidene fluoride (PVDF) in a ratio of 80:10:10. The Ca(NO3)2-based electrode demonstrates an exceptionally long life cycling stability, and a reasonably sound specific capacitance of 234 F/g is obtained at a current density of 3 A/g. Via chemical and electrochemical reactions, the in-situ activation of the Ca(NO3)2 forms an intermediate CaO which contributes to the pseudocapacitance of the electrode. The electrode undergoes a reversible redox reaction between Cu2+ ↔ Cu+ during the charge-discharge process. Superior rate capability and excellent specific capacitance retention of ∼120% over 2000 cycles are achieved compared with other inorganic salt electrodes.

AB - A novel water-soluble inorganic Ca(NO3)2 salt electrode is investigated for its pseudocapacitance in an aqueous KOH electrolyte. Commercially available Ca(NO3)2 salt is directly used as the key electrode material. The supercapacitor electrode contains Ca(NO3)2 salt, carbon black, and polyvinylidene fluoride (PVDF) in a ratio of 80:10:10. The Ca(NO3)2-based electrode demonstrates an exceptionally long life cycling stability, and a reasonably sound specific capacitance of 234 F/g is obtained at a current density of 3 A/g. Via chemical and electrochemical reactions, the in-situ activation of the Ca(NO3)2 forms an intermediate CaO which contributes to the pseudocapacitance of the electrode. The electrode undergoes a reversible redox reaction between Cu2+ ↔ Cu+ during the charge-discharge process. Superior rate capability and excellent specific capacitance retention of ∼120% over 2000 cycles are achieved compared with other inorganic salt electrodes.

KW - Ca(NO)

KW - Energy storage

KW - Inorganic salt electrode

KW - Supercapacitor

UR - http://www.scopus.com/inward/record.url?scp=85020015528&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2017.05.013

DO - 10.1016/j.cap.2017.05.013

M3 - Article

AN - SCOPUS:85020015528

SN - 1567-1739

VL - 17

SP - 1189

EP - 1193

JO - Current Applied Physics

JF - Current Applied Physics

IS - 9

ER -

Calcium nitrate (Ca(NO₃)₂)-based inorganic salt electrode for supercapacitor with long-cycle life performance

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Keywords

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