Preparation of activated carbon decorated with carbon dots and its electrochemical performance

Su Jin Jang; Yun Chan Kang; Kwang Chul Roh

doi:10.1016/j.jiec.2019.11.003

Preparation of activated carbon decorated with carbon dots and its electrochemical performance

Su Jin Jang, Yun Chan Kang, Kwang Chul Roh

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

19 Citations (Scopus)

Abstract

Activated carbon decorated with carbon dots (ACD) was synthesized using an alkali activation process, in which metallic potassium expands the layer stacks and scissored turbostratic-structured carbon surface into nanosized particles. In addition, we demonstrated a capacitive effect in supercapacitors based on ACD, which has a high electrical conductivity because of the electronic pathway between the surface defects on activated carbon. The cyclic voltammogram curve was less distorted when the scan rate was increased to 100 mV s^-1. Improved additional volumetric capacitance of up to 123.2 F cc^-1 was achieved because the carbon dots provided additional capacitance resulting from intercalation into the graphitic carbon structure. The results obtained herein pave new ways for application of nanocarbons in energy storage.

Original language	English
Pages (from-to)	383-389
Number of pages	7
Journal	Journal of Industrial and Engineering Chemistry
Volume	82
DOIs	https://doi.org/10.1016/j.jiec.2019.11.003
Publication status	Published - 2020 Feb 25

Bibliographical note

Funding Information:
This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) ( 20183030032010 ). And this work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) ( 20172410100150 ). Appendix A

Publisher Copyright:
© 2019

Keywords

Activated carbon
Alkali activation
Carbon dot
Supercapacitor

ASJC Scopus subject areas

General Chemical Engineering

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10.1016/j.jiec.2019.11.003

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title = "Preparation of activated carbon decorated with carbon dots and its electrochemical performance",

abstract = "Activated carbon decorated with carbon dots (ACD) was synthesized using an alkali activation process, in which metallic potassium expands the layer stacks and scissored turbostratic-structured carbon surface into nanosized particles. In addition, we demonstrated a capacitive effect in supercapacitors based on ACD, which has a high electrical conductivity because of the electronic pathway between the surface defects on activated carbon. The cyclic voltammogram curve was less distorted when the scan rate was increased to 100 mV s-1. Improved additional volumetric capacitance of up to 123.2 F cc-1 was achieved because the carbon dots provided additional capacitance resulting from intercalation into the graphitic carbon structure. The results obtained herein pave new ways for application of nanocarbons in energy storage.",

keywords = "Activated carbon, Alkali activation, Carbon dot, Supercapacitor",

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note = "Funding Information: This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) ( 20183030032010 ). And this work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) ( 20172410100150 ). Appendix A Publisher Copyright: {\textcopyright} 2019",

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doi = "10.1016/j.jiec.2019.11.003",

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AU - Jang, Su Jin

AU - Kang, Yun Chan

AU - Roh, Kwang Chul

N1 - Funding Information: This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) ( 20183030032010 ). And this work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) ( 20172410100150 ). Appendix A Publisher Copyright: © 2019

PY - 2020/2/25

Y1 - 2020/2/25

N2 - Activated carbon decorated with carbon dots (ACD) was synthesized using an alkali activation process, in which metallic potassium expands the layer stacks and scissored turbostratic-structured carbon surface into nanosized particles. In addition, we demonstrated a capacitive effect in supercapacitors based on ACD, which has a high electrical conductivity because of the electronic pathway between the surface defects on activated carbon. The cyclic voltammogram curve was less distorted when the scan rate was increased to 100 mV s-1. Improved additional volumetric capacitance of up to 123.2 F cc-1 was achieved because the carbon dots provided additional capacitance resulting from intercalation into the graphitic carbon structure. The results obtained herein pave new ways for application of nanocarbons in energy storage.

AB - Activated carbon decorated with carbon dots (ACD) was synthesized using an alkali activation process, in which metallic potassium expands the layer stacks and scissored turbostratic-structured carbon surface into nanosized particles. In addition, we demonstrated a capacitive effect in supercapacitors based on ACD, which has a high electrical conductivity because of the electronic pathway between the surface defects on activated carbon. The cyclic voltammogram curve was less distorted when the scan rate was increased to 100 mV s-1. Improved additional volumetric capacitance of up to 123.2 F cc-1 was achieved because the carbon dots provided additional capacitance resulting from intercalation into the graphitic carbon structure. The results obtained herein pave new ways for application of nanocarbons in energy storage.

KW - Activated carbon

KW - Alkali activation

KW - Carbon dot

KW - Supercapacitor

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DO - 10.1016/j.jiec.2019.11.003

M3 - Article

AN - SCOPUS:85076521273

SN - 1226-086X

VL - 82

SP - 383

EP - 389

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

Preparation of activated carbon decorated with carbon dots and its electrochemical performance

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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