Basic concepts of supercapacitors

Ling Bing Kong; Wenxiu Que; Lang Liu; Freddy Yin Chiang Boey; Zhichuan J. Xu; Kun Zhou; Sean Li; Tianshu Zhang; Chuanhu Wang

doi:10.1201/9781315153025

Basic concepts of supercapacitors

Ling Bing Kong^*, Wenxiu Que, Lang Liu, Freddy Yin Chiang Boey, Zhichuan J. Xu, Kun Zhou, Sean Li, Tianshu Zhang, Chuanhu Wang

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Chapter

5 Citations (Scopus)

Abstract

This chapter aims to provide a general description on the fundamental aspects regarding supercapacitors (capacitors), which are important when developing new nanomaterials for such applications. An electric capacitor usually consists of two conductive plates, known as electrode and made of metals, between which a piece of dielectric material is inserted as shown in Fig. 2.1 [1]. Dielectrics that can used to construct a capacitor include air (vacuum), oiled paper, mica, glass, porcelain and various titanates. As an external voltage is applied across the two electrodes, the charging process occurs, during which, positive charges are accumulated on the positive electrode, whereas negative charges are accumulated on the negative electrode. After the external voltage is removed, both the positive and negative charges are still at the electrodes. Therefore, the capacitor separates the electrical charges. Once the two electrodes are connected with a conductive wire, the discharging process takes place, during which the positive and negative charges will be combined through the conductive wire. As a result, the capacitor can be used to store and deliver the charges.

Original language	English
Title of host publication	Nanomaterials for Supercapacitors
Publisher	CRC Press
Pages	4-27
Number of pages	24
ISBN (Electronic)	9781498758437
ISBN (Print)	9781498758420
DOIs	https://doi.org/10.1201/9781315153025
Publication status	Published - Jan 1 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 by Taylor & Francis Group, LLC.

ASJC Scopus Subject Areas

General Engineering
General Chemical Engineering
General Materials Science

Keywords

Capacitance
Capacitor
Charge
Dielectric constant
Dielectric loss
Dielectric materials
Dielectric polarization
Differential capacitance
Discharge
Double-layer potential
Electric field
Electric potential
Electrochemical double-layer (ECDL)
Electrode
Electrolyte
Energy density
Energy storage
Equivalent circuit
Equivalent series resistance (ESR)
Gouy-chapman-stern (GCS) model
Parallel-plate capacitor
Potential difference
Power density
Ragone plot
Supercapacitor

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10.1201/9781315153025

Cite this

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title = "Basic concepts of supercapacitors",

abstract = "This chapter aims to provide a general description on the fundamental aspects regarding supercapacitors (capacitors), which are important when developing new nanomaterials for such applications. An electric capacitor usually consists of two conductive plates, known as electrode and made of metals, between which a piece of dielectric material is inserted as shown in Fig. 2.1 [1]. Dielectrics that can used to construct a capacitor include air (vacuum), oiled paper, mica, glass, porcelain and various titanates. As an external voltage is applied across the two electrodes, the charging process occurs, during which, positive charges are accumulated on the positive electrode, whereas negative charges are accumulated on the negative electrode. After the external voltage is removed, both the positive and negative charges are still at the electrodes. Therefore, the capacitor separates the electrical charges. Once the two electrodes are connected with a conductive wire, the discharging process takes place, during which the positive and negative charges will be combined through the conductive wire. As a result, the capacitor can be used to store and deliver the charges.",

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author = "Kong, {Ling Bing} and Wenxiu Que and Lang Liu and Boey, {Freddy Yin Chiang} and Xu, {Zhichuan J.} and Kun Zhou and Sean Li and Tianshu Zhang and Chuanhu Wang",

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AU - Que, Wenxiu

AU - Liu, Lang

AU - Boey, Freddy Yin Chiang

AU - Xu, Zhichuan J.

AU - Zhou, Kun

AU - Li, Sean

AU - Zhang, Tianshu

AU - Wang, Chuanhu

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N2 - This chapter aims to provide a general description on the fundamental aspects regarding supercapacitors (capacitors), which are important when developing new nanomaterials for such applications. An electric capacitor usually consists of two conductive plates, known as electrode and made of metals, between which a piece of dielectric material is inserted as shown in Fig. 2.1 [1]. Dielectrics that can used to construct a capacitor include air (vacuum), oiled paper, mica, glass, porcelain and various titanates. As an external voltage is applied across the two electrodes, the charging process occurs, during which, positive charges are accumulated on the positive electrode, whereas negative charges are accumulated on the negative electrode. After the external voltage is removed, both the positive and negative charges are still at the electrodes. Therefore, the capacitor separates the electrical charges. Once the two electrodes are connected with a conductive wire, the discharging process takes place, during which the positive and negative charges will be combined through the conductive wire. As a result, the capacitor can be used to store and deliver the charges.

AB - This chapter aims to provide a general description on the fundamental aspects regarding supercapacitors (capacitors), which are important when developing new nanomaterials for such applications. An electric capacitor usually consists of two conductive plates, known as electrode and made of metals, between which a piece of dielectric material is inserted as shown in Fig. 2.1 [1]. Dielectrics that can used to construct a capacitor include air (vacuum), oiled paper, mica, glass, porcelain and various titanates. As an external voltage is applied across the two electrodes, the charging process occurs, during which, positive charges are accumulated on the positive electrode, whereas negative charges are accumulated on the negative electrode. After the external voltage is removed, both the positive and negative charges are still at the electrodes. Therefore, the capacitor separates the electrical charges. Once the two electrodes are connected with a conductive wire, the discharging process takes place, during which the positive and negative charges will be combined through the conductive wire. As a result, the capacitor can be used to store and deliver the charges.

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KW - Capacitor

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KW - Dielectric loss

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KW - Dielectric polarization

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KW - Discharge

KW - Double-layer potential

KW - Electric field

KW - Electric potential

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KW - Electrolyte

KW - Energy density

KW - Energy storage

KW - Equivalent circuit

KW - Equivalent series resistance (ESR)

KW - Gouy-chapman-stern (GCS) model

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KW - Potential difference

KW - Power density

KW - Ragone plot

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Basic concepts of supercapacitors

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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