Carbon quantum dot-based composites for energy storage and electrocatalysis: Mechanism, applications and future prospects

Hoang, Van Chinh; Dave, Khyati; Gomes, Vincent G.

doi:10.1016/j.nanoen.2019.104093

Cited by 201 publications

(116 citation statements)

References 151 publications

Supporting

Mentioning

116

Contrasting

Order By: Relevance

“…[1] CQDs consist of a carbon core and the surface passivation layer with functional groups which largely dominant the properties of CQDs in electronically and catalyzing properties. [2] Due to the quantum nature and the functional groups, CQDs have been demonstrated to have good biocompatibilities, low toxicities, easy functionalization, as well as attractive optical properties including tunable photoluminescence, wide spectral adsorption and electrochemiluminescence. More efforts have been devoted to exploring methods for preparing uniform CQDs via efficient, environmental-friendly, low cost approaches since Xu et al reported the first discovery of CQDs in 2004.…”

Section: Introductionmentioning

confidence: 99%

Electrochemistry in Carbon‐based Quantum Dots

Ding

Niu

Zhang

et al. 2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

Electrochemistry belongs to an important branch of chemistry that deals with the chemical changes produced by electricity and the production of electricity by chemical changes. Therefore, it can not only act a powerful tool for materials synthesis, but also offer an effective platform for sensing and catalysis. As extraordinary zero-dimensional materials, carbon-based quantum dots (CQDs) have been attracting tremendous attention due to their excellent properties such as good chemical stability, environmental friendliness, nontoxicity and abundant resources. Compared with the traditional methods for the preparation of CQDs, electrochemical (EC) methods offer advantages of simple instrumentation, mild reaction conditions, low cost and mass production. In return, CQDs could provide cost-effective, environmentally friendly, biocompatible, stable and easilyfunctionalizable probes, modifiers and catalysts for EC sensing. However, no specific review has been presented to systematically summarize both aspects until now. In this review, the EC preparation methods of CQDs are critically discussed focusing on CQDs. We further emphasize the applications of CQDs in EC sensors, electrocatalysis, biofuel cells and EC flexible devices. This review will further the experimental and theoretical understanding of the challenges and future prospective in this field, open new directions on exploring new advanced CQDs in EC to meet the high demands in diverse applications.[a] Dr.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrochemistry in Carbon‐based Quantum Dots

Ding

Niu

Zhang

et al. 2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“…Even though the theoretical voltage for HER and OER at 298K are 0 V and 1.23 V, respectively, practically, extra electricity is needed to overcome the activation energy barrier [10]. In acidic and alkaline medium, the OER follows the following steps respectively, [12], Acidic medium mechanism for OER: H 2 O ↔ HO * + H + + e -HO * ↔ O * + H + + e -O * + H 2 O ↔ HOO * + H + + e -HOO* ↔ O 2 + H + + e -Alkaline medium mechanism for OER: HO -↔ HO * + e -OH -+ HO * ↔ O * + H 2 O + e -O * + OH -↔ HOO * + e -HOO* + OH -↔ O 2 + H 2 O + e -OER is a more sluggish process than HER due to the four-electron transfer process. Theoretical thermochemical studies of OER showed that binding energy of surface oxygen played a controlling role [17].…”

Section: Electrocatalysis For Energy Conversionmentioning

confidence: 99%

“…ORR follows four and two electron transfer mechanisms in both acidic and alkaline medium [12], Acidic medium mechanism for ORR:…”

Section: Electrocatalysis For Energy Conversionmentioning

confidence: 99%

Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process

Jana

Ngo

Chung

et al. 2020

J. Electrochem. Sci. Technol

View full text Add to dashboard Cite

Modern electrochemical energy devices involve generation and reduction of fuel gases through electrochemical reactions of water splitting, alcohol oxidation, oxygen reduction, etc. Initially, these processes were executed in the presence of noble metal-based catalyst that showed low overpotential and high current density. However, its high cost, unavailability, corrosion and related toxicity limited its application. The search for alternative with high stability, durability, and efficiency led scientists towards carbon nanoparticles supported catalysts which has high surface area, good electrical conductivity, tunable morphology, low cost, ease of synthesis and stability. Carbon nanoparticles are classified into two groups based on morphology, one and zero dimensional particles. Carbon nanoparticles at zero dimension, denoted as carbon dots, are less used carbon support compared to other forms. However, recently carbon dots with improved electronic properties have become popular as catalyst as well as catalyst support. This review focused on the recent advances in electrocatalytic activities of carbon dots. The mechanisms of common electrocatalytic reactions and the role of the catalysts are also discussed. The review also proposed future developments and other research directions to overcome current limitations.

show abstract

“…Electrocatalytic and photoelectrochemical (PEC) water splitting for H 2 and O 2 generation are attractive research directions nowadays . CDs with unique charge transfer and high catalytic activity have been applied to combine with the porous electrocatalysts as co‐catalyst to achieve high electrocatalytic performance . One example is that a CDs and Co 9 S 8 nanoparticles co‐doped porous C composite was used as oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) bifunctional electrocatalyst .…”

Section: Applications Of Cds@pm Compositesmentioning

confidence: 99%

Carbon Dots in Porous Materials: Host–Guest Synergy for Enhanced Performance

Zhang

Wang

et al. 2020

Angewandte Chemie

View full text Add to dashboard Cite

She has been af ull Professor in the Chemistry Department, Jilin University,s ince 1999. She was elected as am ember of the Chinese Academy of Sciences in 2015, academician of TWAS in 2016, and member of Academiae Europaeae in 2019. Her main research interest is in the designed synthesis and application of zeolitic nanoporous materials in energy,e nvironment, and other emerging fields. Scheme 1. Schematic of CDs confined in various PMs and the applications.

show abstract

Carbon quantum dot-based composites for energy storage and electrocatalysis: Mechanism, applications and future prospects

Cited by 201 publications

References 151 publications

Electrochemistry in Carbon‐based Quantum Dots

Electrochemistry in Carbon‐based Quantum Dots

Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process

Carbon Dots in Porous Materials: Host–Guest Synergy for Enhanced Performance

Contact Info

Product

Resources

About