Supercapacitor electrodes from activation of binderless green monoliths of biomass self-adhesive carbon grains composed of varying amount of graphene additive

M. R.M. Jasni, Mohamad Deraman, M. Suleman, Zalita Zainuddin, Mohd. Amir Radhi Othman, Chin Hua Chia, M. A. Hashim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Binderless electrodes of activated carbon monoliths (ACMs) and its composites with graphene are prepared by carbonization and activation of green monoliths consisting of self-adhesive carbon grains and 0–10 wt% KOH-treated graphene. Compared with ACMs, the optimized composite containing 6 wt% graphene exhibits more ordered micro-structures with increased crystallite height, and graphitic sp2 carbons (ID/IG = 0.49 vs. 0.91) along with enhanced porosity; as revealed by X-ray diffraction, Raman, and N2 adsorption-desorption studies. These modifications lead to increased electrical conductivity (13 vs. 9 S cm−1) through improved interconnections of carbon particles by graphene, and surface area ~ (800 vs. 456 m2 g−1) due to increased inter-particle spacing. Further, contrary to ACMs, the composite electrodes can offer faster delivery of energy in almost 50% less response time (5 vs. 8 s) due to reduced equivalent series resistance (1.67 vs. 2.65 Ω) and charge transfer resistance (0.55 vs. 1.33 Ω).

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalIonics
DOIs
Publication statusAccepted/In press - 5 Oct 2017

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electrochemical capacitors
biomass
Graphene
adhesives
Adhesives
graphene
Biomass
activated carbon
Carbon
Chemical activation
activation
Activated carbon
Electrodes
electrodes
carbon
composite materials
Composite materials
carbonization
Carbonization

Keywords

  • Activated carbon monoliths
  • Aqueous electrolyte
  • Binderless electrodes
  • Energy storage
  • Graphene
  • Green monoliths
  • Self-adhesive carbon grains

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

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title = "Supercapacitor electrodes from activation of binderless green monoliths of biomass self-adhesive carbon grains composed of varying amount of graphene additive",
abstract = "Binderless electrodes of activated carbon monoliths (ACMs) and its composites with graphene are prepared by carbonization and activation of green monoliths consisting of self-adhesive carbon grains and 0–10 wt{\%} KOH-treated graphene. Compared with ACMs, the optimized composite containing 6 wt{\%} graphene exhibits more ordered micro-structures with increased crystallite height, and graphitic sp2 carbons (ID/IG = 0.49 vs. 0.91) along with enhanced porosity; as revealed by X-ray diffraction, Raman, and N2 adsorption-desorption studies. These modifications lead to increased electrical conductivity (13 vs. 9 S cm−1) through improved interconnections of carbon particles by graphene, and surface area ~ (800 vs. 456 m2 g−1) due to increased inter-particle spacing. Further, contrary to ACMs, the composite electrodes can offer faster delivery of energy in almost 50{\%} less response time (5 vs. 8 s) due to reduced equivalent series resistance (1.67 vs. 2.65 Ω) and charge transfer resistance (0.55 vs. 1.33 Ω).",
keywords = "Activated carbon monoliths, Aqueous electrolyte, Binderless electrodes, Energy storage, Graphene, Green monoliths, Self-adhesive carbon grains",
author = "Jasni, {M. R.M.} and Mohamad Deraman and M. Suleman and Zalita Zainuddin and Othman, {Mohd. Amir Radhi} and Chia, {Chin Hua} and Hashim, {M. A.}",
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T1 - Supercapacitor electrodes from activation of binderless green monoliths of biomass self-adhesive carbon grains composed of varying amount of graphene additive

AU - Jasni, M. R.M.

AU - Deraman, Mohamad

AU - Suleman, M.

AU - Zainuddin, Zalita

AU - Othman, Mohd. Amir Radhi

AU - Chia, Chin Hua

AU - Hashim, M. A.

PY - 2017/10/5

Y1 - 2017/10/5

N2 - Binderless electrodes of activated carbon monoliths (ACMs) and its composites with graphene are prepared by carbonization and activation of green monoliths consisting of self-adhesive carbon grains and 0–10 wt% KOH-treated graphene. Compared with ACMs, the optimized composite containing 6 wt% graphene exhibits more ordered micro-structures with increased crystallite height, and graphitic sp2 carbons (ID/IG = 0.49 vs. 0.91) along with enhanced porosity; as revealed by X-ray diffraction, Raman, and N2 adsorption-desorption studies. These modifications lead to increased electrical conductivity (13 vs. 9 S cm−1) through improved interconnections of carbon particles by graphene, and surface area ~ (800 vs. 456 m2 g−1) due to increased inter-particle spacing. Further, contrary to ACMs, the composite electrodes can offer faster delivery of energy in almost 50% less response time (5 vs. 8 s) due to reduced equivalent series resistance (1.67 vs. 2.65 Ω) and charge transfer resistance (0.55 vs. 1.33 Ω).

AB - Binderless electrodes of activated carbon monoliths (ACMs) and its composites with graphene are prepared by carbonization and activation of green monoliths consisting of self-adhesive carbon grains and 0–10 wt% KOH-treated graphene. Compared with ACMs, the optimized composite containing 6 wt% graphene exhibits more ordered micro-structures with increased crystallite height, and graphitic sp2 carbons (ID/IG = 0.49 vs. 0.91) along with enhanced porosity; as revealed by X-ray diffraction, Raman, and N2 adsorption-desorption studies. These modifications lead to increased electrical conductivity (13 vs. 9 S cm−1) through improved interconnections of carbon particles by graphene, and surface area ~ (800 vs. 456 m2 g−1) due to increased inter-particle spacing. Further, contrary to ACMs, the composite electrodes can offer faster delivery of energy in almost 50% less response time (5 vs. 8 s) due to reduced equivalent series resistance (1.67 vs. 2.65 Ω) and charge transfer resistance (0.55 vs. 1.33 Ω).

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