Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor

Sengodan Prabhu; Moorthy Maruthapandi; Arulappan Durairaj; John H.T. Luong; Aharon Gedanken

doi:10.1021/acs.energyfuels.3c00324

Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor

Sengodan Prabhu
, Moorthy Maruthapandi
, Arulappan Durairaj
, John H.T. Luong
, Aharon Gedanken

School of Chemistry

Bar-Ilan University

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

Abstract

Capsule-like CuO/CDs (CuO@CDs) with a surface area of 33.12 m² g^-1 were synthesized by the hydrothermal treatment, compared to 19.02 m² g^-1 for pristine CuO. An anode was then fabricated from capsule-like CuO@CDs to form a hybrid solid-state supercapacitor (HSSC) with the activated carbon (AC) cathode and PVA/1M KOH as an electrolyte. Three electrode system offered 1208.88 F/g (specific capacitance at 2 A/g current density) and unveiled a remarkable life cycle (retention) and Coulombic efficiency (CF): 93 and 98% after 5000 charge-discharge cycles at 10 A/g. In terms of performance, the HSSC delivered 1.5 V and 102.60 F/g (50.74 C/g) at 2 A/g, 8437.50 W/kg (power density), and 36.90 Wh/kg (energy density). The HSSC still retained 92% of cyclic stability and 83% of CF after 10,000 cycles.

Original language	English
Pages (from-to)	6824-6833
Number of pages	10
Journal	Energy and Fuels
Volume	37
Issue number	9
DOIs	https://doi.org/10.1021/acs.energyfuels.3c00324
Publication status	Published - 4 May 2023

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title = "Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor",

abstract = "Capsule-like CuO/CDs (CuO@CDs) with a surface area of 33.12 m2 g-1 were synthesized by the hydrothermal treatment, compared to 19.02 m2 g-1 for pristine CuO. An anode was then fabricated from capsule-like CuO@CDs to form a hybrid solid-state supercapacitor (HSSC) with the activated carbon (AC) cathode and PVA/1M KOH as an electrolyte. Three electrode system offered 1208.88 F/g (specific capacitance at 2 A/g current density) and unveiled a remarkable life cycle (retention) and Coulombic efficiency (CF): 93 and 98\% after 5000 charge-discharge cycles at 10 A/g. In terms of performance, the HSSC delivered 1.5 V and 102.60 F/g (50.74 C/g) at 2 A/g, 8437.50 W/kg (power density), and 36.90 Wh/kg (energy density). The HSSC still retained 92\% of cyclic stability and 83\% of CF after 10,000 cycles.",

author = "Sengodan Prabhu and Moorthy Maruthapandi and Arulappan Durairaj and Luong, \{John H.T.\} and Aharon Gedanken",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

month = may,

day = "4",

doi = "10.1021/acs.energyfuels.3c00324",

language = "English",

volume = "37",

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T1 - Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor

AU - Prabhu, Sengodan

AU - Maruthapandi, Moorthy

AU - Durairaj, Arulappan

AU - Luong, John H.T.

AU - Gedanken, Aharon

PY - 2023/5/4

Y1 - 2023/5/4

N2 - Capsule-like CuO/CDs (CuO@CDs) with a surface area of 33.12 m2 g-1 were synthesized by the hydrothermal treatment, compared to 19.02 m2 g-1 for pristine CuO. An anode was then fabricated from capsule-like CuO@CDs to form a hybrid solid-state supercapacitor (HSSC) with the activated carbon (AC) cathode and PVA/1M KOH as an electrolyte. Three electrode system offered 1208.88 F/g (specific capacitance at 2 A/g current density) and unveiled a remarkable life cycle (retention) and Coulombic efficiency (CF): 93 and 98% after 5000 charge-discharge cycles at 10 A/g. In terms of performance, the HSSC delivered 1.5 V and 102.60 F/g (50.74 C/g) at 2 A/g, 8437.50 W/kg (power density), and 36.90 Wh/kg (energy density). The HSSC still retained 92% of cyclic stability and 83% of CF after 10,000 cycles.

AB - Capsule-like CuO/CDs (CuO@CDs) with a surface area of 33.12 m2 g-1 were synthesized by the hydrothermal treatment, compared to 19.02 m2 g-1 for pristine CuO. An anode was then fabricated from capsule-like CuO@CDs to form a hybrid solid-state supercapacitor (HSSC) with the activated carbon (AC) cathode and PVA/1M KOH as an electrolyte. Three electrode system offered 1208.88 F/g (specific capacitance at 2 A/g current density) and unveiled a remarkable life cycle (retention) and Coulombic efficiency (CF): 93 and 98% after 5000 charge-discharge cycles at 10 A/g. In terms of performance, the HSSC delivered 1.5 V and 102.60 F/g (50.74 C/g) at 2 A/g, 8437.50 W/kg (power density), and 36.90 Wh/kg (energy density). The HSSC still retained 92% of cyclic stability and 83% of CF after 10,000 cycles.

UR - https://www.scopus.com/pages/publications/85154019407

U2 - 10.1021/acs.energyfuels.3c00324

DO - 10.1021/acs.energyfuels.3c00324

M3 - Article

AN - SCOPUS:85154019407

SN - 0887-0624

VL - 37

SP - 6824

EP - 6833

JO - Energy and Fuels

JF - Energy and Fuels

IS - 9

ER -

Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor

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