Nanostructured Electrode Materials for Electrochemical Capacitor Applications

Choi, Hyosun; Yoon, Hyeonseok

doi:10.3390/nano5020906

Cited by 153 publications

(82 citation statements)

References 113 publications

(137 reference statements)

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“…10,11 The reversible electrostatic adsorption /desorption on the electrode surface is used to store the charge. 12 By arrangement of the opposite sign charge an electric double layer is formed in the vicinity of the electrode/electrolyte interface, a so-called "electric double layer capacitor". 13,14 Its working principle is: the electrode surface and solution on both sides of the electrolyte solution appear on the opposite sides of the excess charge.…”

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confidence: 99%

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)₂

Musharavati

Sun

et al. 2018

J. Electrochem. Soc.

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Layered double hydroxides (LDH) as active electrode materials have become the focus of research in energy storage applications. The manufacturing of excellent electrochemical performance of the LDH electrode is still a challenge. In this paper, the production of CoAl-LDH@Ni(OH) 2 is carried out in two steps, including hydrothermal and electrodeposition techniques. The prominent features of this electrode material are shown in the structural and morphological aspects, and the electrochemical properties are investigated by improving the conductivity and cycle stability. The core of this experimental study is to investigate the properties of the materials by depositing different amounts of nickel hydroxide and changing the loading of the active materials. The experimental results show that the specific capacity is 1810.5F · g −1 at 2 A/g current density and the cycle stability remained at 76% at 30 A g −1 for 3000 cycles. Moreover, a solid-state asymmetric supercapacitor with CoAl-LDH@Ni(OH) 2 as the positive electrode and multi-walled carbon nanotube coated on the nickel foam as the negative electrode delivers high energy density (16.72 Wh kg −1 at the power density of 350.01 W kg −1 ). This study indicates the advantages of the design and synthesis of layered double hydroxides, a composite with excellent electrochemical properties that has potential applications in energy storage. Supercapacitors (SCs) are currently of widespread interest in energy storage, which has become a research area due to the development of various energy storage devices, long cycle life, high power density, high safety, and low maintenance costs. Numerous studies have concentrated on the enhancing the performance of the electrode material. Electrochemical capacitors (ECs), also known as supercapacitors, 1,2 are a new type of energy storage device that have been developed in recent years. Typically, according to the charge storage mechanism of different electrode materials, 3-5 the use of supercapacitors can be divided into two categories including the electric double layer capacitor (EDLC), Faraday pseudocapacitor and hybrid supercapacitor.6-9 The electric double layer capacitor uses high surface area carbon as the electrode material, while the Faraday pseudocapacitor uses a transition metal oxide or a conductive polymer as an electrode material.The electric double layer capacitor is a new capacitor which is based on the interface of the double layer theory.10,11 The reversible electrostatic adsorption /desorption on the electrode surface is used to store the charge.12 By arrangement of the opposite sign charge an electric double layer is formed in the vicinity of the electrode/electrolyte interface, a so-called "electric double layer capacitor".13,14 Its working principle is: the electrode surface and solution on both sides of the electrolyte solution appear on the opposite sides of the excess charge.Hydrotalcite-like layered clays, also well-known LDH, 15-18 have been extensively explored in the field of catalysts and catalyst supports...

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confidence: 99%

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)₂

Musharavati

Sun

et al. 2018

J. Electrochem. Soc.

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“…The other is electric double‐layer capacitor (EDLC), where the capacitance comes from an electrical double layer generated by alignment of electrons, ions or dipoles at the electrode/electrolyte interface, indicating that the process is physical, as shown in Figure . The EDLC has a large charge density, and the distance between the positive and negative charges is extremely short, resulting in a large capacitance . Generally speaking, as the electrodes of EDLCs, carbon materials should have three characteristics: (a) a high SSA of about 1000 m 2 /g; (b) a wide range of pore size; and (c) good conductivity .…”

Section: Introductionmentioning

confidence: 99%

“…12 The EDLC has a large charge density, and the distance between the positive and negative charges is extremely short, resulting in a large capacitance. 13 Generally speaking, as the electrodes of EDLCs, carbon materials should have three characteristics: (a) a high SSA of about 1000 m 2 /g; (b) a wide range of pore size; and (c) good conductivity. 5,14 Based on the three characteristics discussed above, the current development of SCs is mainly concentrated in three aspects: improving product energy density, power density, and reducing mass production costs.…”

Section: Introductionmentioning

confidence: 99%

The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

Lin

et al. 2019

Int J Energy Res

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Summary Biomass is one of the most promising clean energy sources. The porous carbon materials prepared by biomass as electrode materials of electric double‐layer capacitors (EDLCs) are easily available at a low price, which would greatly reduce the cost of the production. However, carbon materials made with biomass generally have many disadvantages such as low specific surface area (SSA), poor pore size structure, and difficulty to control the pore diameter, which results in the poor EDLC performance. In this paper, the prime purpose is to expose the recent progress of biomass carbon in the fields of electrode materials of EDLC. The review provides a comprehensive literature review that is focused on EDLC electrodes derived from biochar of the evidence of 181 publications published over a period of 30 years from 1989 to 2019. Various carbon materials derived from different biomass for electrode of EDLC are discussed. The most promising methods for the preparation of several biomass carbons are described in detail. Some factors such as SSA, pore size structure, surface functional groups, and electrolyte are further analyzed to discuss the effects on the electrochemical performance of the EDLC. Notably, current deficiencies and possible solutions of preparation methods of biomass carbon as electrode materials are outlined. And the future research trends in this field are prospected.

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“…Our group well demonstrated the importance of the electrode system in electrochemical capacitors using two different nanohybrid electrode materials, namely, MnO 2 /PEDOT nanotubes and rGO/CNFs [196]. Lastly, the latest review article addresses major issues in electrochemical capacitor application using nanostructured electrode materials [197]. …”

Section: Electrochemical Energy Storage Devicesmentioning

confidence: 99%

Recent Advances in Nanostructured Conducting Polymers: from Synthesis to Practical Applications

2016

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Abstract:Conducting polymers (CPs) have been widely studied to realize advanced technologies in various areas such as chemical and biosensors, catalysts, photovoltaic cells, batteries, supercapacitors, and others. In particular, hybridization of CPs with inorganic species has allowed the production of promising functional materials with improved performance in various applications. Consequently, many important studies on CPs have been carried out over the last decade, and numerous researchers remain attracted to CPs from a technological perspective. In this review, we provide a theoretical classification of fabrication techniques and a brief summary of the most recent developments in synthesis methods. We evaluate the efficacy and benefits of these methods for the preparation of pure CP nanomaterials and nanohybrids, presenting the newest trends from around the world with 205 references, most of which are from the last three years. Furthermore, we also evaluate the effects of various factors on the structures and properties of CP nanomaterials, citing a large variety of publications.

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Nanostructured Electrode Materials for Electrochemical Capacitor Applications

Cited by 153 publications

References 113 publications

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)₂

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)₂

The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

Recent Advances in Nanostructured Conducting Polymers: from Synthesis to Practical Applications

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Nanostructured Electrode Materials for Electrochemical Capacitor Applications

Cited by 153 publications

References 113 publications

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)2

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)2

The synthesis and performance analysis of various biomass‐based carbon materials for electric double‐layer capacitors: A review

Recent Advances in Nanostructured Conducting Polymers: from Synthesis to Practical Applications

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Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)₂

Investigation of the Electrochemical Properties of CoAl-Layered Double Hydroxide/Ni(OH)₂