Synthesis and characterization of CuO/graphene (Core/shell) quantum dots for electrochemical applications

Yohan Ko; Jaeho Shim; Chil Hyoung Lee; Kyu Seung Lee; Hyunjin Cho; Ki Tae Lee; Dong Ick Son

doi:10.1016/j.matlet.2018.01.042

Synthesis and characterization of CuO/graphene (Core/shell) quantum dots for electrochemical applications

Yohan Ko
, Jaeho Shim
, Chil Hyoung Lee
, Kyu Seung Lee
, Hyunjin Cho
, Ki Tae Lee
, Dong Ick Son^*

^*Corresponding author for this work

Electronic Materials Engineering

Institute of Advanced Composite MaterialsKorea Institute of Science and Technology (KIST)
Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

15 Scopus citations

Abstract

We report on the in-situ chemical growth of unique core-shell quantum dots (QDs) with single layer graphene on the surface of CuO QDs and their structural, optical and electrical properties. The CuO/graphene QDs were synthesized through a simple and hydrothermal technique. In order to enhance performance electrochemical energy storages, we have developed core (active material)/shell (conductive material) type CuO/graphene QDs as electrode materials using the combined electrolytes (KOH + LiCl). As a result, the performance of electrochemical energy storages exhibits specific capacitance of 154 F g⁻¹ at current density of 1 A g⁻¹ and cycling stability with 84% capacitance retention after 3,000 cycles.

Original language	English
Pages (from-to)	113-116
Number of pages	4
Journal	Materials Letters
Volume	217
DOIs	https://doi.org/10.1016/j.matlet.2018.01.042
State	Published - 2018.04.15

Keywords

Core/shell type
CuO
Electrochemical
Graphene
Quantum dots
Supercapacitor

Quacquarelli Symonds(QS) Subject Topics

Engineering - Mechanical
Materials Science
Physics & Astronomy

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10.1016/j.matlet.2018.01.042

Cite this

@article{ef8a7be884234d668d55b22702cbbd22,

title = "Synthesis and characterization of CuO/graphene (Core/shell) quantum dots for electrochemical applications",

abstract = "We report on the in-situ chemical growth of unique core-shell quantum dots (QDs) with single layer graphene on the surface of CuO QDs and their structural, optical and electrical properties. The CuO/graphene QDs were synthesized through a simple and hydrothermal technique. In order to enhance performance electrochemical energy storages, we have developed core (active material)/shell (conductive material) type CuO/graphene QDs as electrode materials using the combined electrolytes (KOH + LiCl). As a result, the performance of electrochemical energy storages exhibits specific capacitance of 154 F g−1 at current density of 1 A g−1 and cycling stability with 84\% capacitance retention after 3,000 cycles.",

keywords = "Core/shell type, CuO, Electrochemical, Graphene, Quantum dots, Supercapacitor",

author = "Yohan Ko and Jaeho Shim and Lee, \{Chil Hyoung\} and Lee, \{Kyu Seung\} and Hyunjin Cho and Lee, \{Ki Tae\} and Son, \{Dong Ick\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = apr,

day = "15",

doi = "10.1016/j.matlet.2018.01.042",

language = "English",

volume = "217",

pages = "113--116",

journal = "Materials Letters",

issn = "0167-577X",

}

TY - JOUR

T1 - Synthesis and characterization of CuO/graphene (Core/shell) quantum dots for electrochemical applications

AU - Ko, Yohan

AU - Shim, Jaeho

AU - Lee, Chil Hyoung

AU - Lee, Kyu Seung

AU - Cho, Hyunjin

AU - Lee, Ki Tae

AU - Son, Dong Ick

PY - 2018/4/15

Y1 - 2018/4/15

N2 - We report on the in-situ chemical growth of unique core-shell quantum dots (QDs) with single layer graphene on the surface of CuO QDs and their structural, optical and electrical properties. The CuO/graphene QDs were synthesized through a simple and hydrothermal technique. In order to enhance performance electrochemical energy storages, we have developed core (active material)/shell (conductive material) type CuO/graphene QDs as electrode materials using the combined electrolytes (KOH + LiCl). As a result, the performance of electrochemical energy storages exhibits specific capacitance of 154 F g−1 at current density of 1 A g−1 and cycling stability with 84% capacitance retention after 3,000 cycles.

AB - We report on the in-situ chemical growth of unique core-shell quantum dots (QDs) with single layer graphene on the surface of CuO QDs and their structural, optical and electrical properties. The CuO/graphene QDs were synthesized through a simple and hydrothermal technique. In order to enhance performance electrochemical energy storages, we have developed core (active material)/shell (conductive material) type CuO/graphene QDs as electrode materials using the combined electrolytes (KOH + LiCl). As a result, the performance of electrochemical energy storages exhibits specific capacitance of 154 F g−1 at current density of 1 A g−1 and cycling stability with 84% capacitance retention after 3,000 cycles.

KW - Core/shell type

KW - CuO

KW - Electrochemical

KW - Graphene

KW - Quantum dots

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/85041376923

U2 - 10.1016/j.matlet.2018.01.042

DO - 10.1016/j.matlet.2018.01.042

M3 - Journal article

AN - SCOPUS:85041376923

SN - 0167-577X

VL - 217

SP - 113

EP - 116

JO - Materials Letters

JF - Materials Letters

ER -

Synthesis and characterization of CuO/graphene (Core/shell) quantum dots for electrochemical applications

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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