Redox-active sodium 3,4-dihydroxy anthraquinone-2-sulfonate anchored on reduced graphene oxide for high-performance Zn-ion hybrid capacitors

Yang, Kai; Hu, Lei; Wang, Yi; Xia, Jianxing; Sun, Mengxuan; Zhang, Yunpeng; Gou, Chao; Jia, Chunyang

doi:10.1039/d2ta02630a

Cited by 27 publications

(4 citation statements)

References 74 publications

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“…All of the samples are with two typical peaks of D-peak and G-peak, which represent the sp 3 disordered defects formed by hybrid carbon and graphite carbon formed by sp 2 hybrid carbon, respectively. 50 By calculating the intensity of the D-peak to the G-peak (I D / I G ), the defect degree of the graphene films can be obtained. After being reduced at 80 °C in the solution of HAc/HI acid, the I D /I G values of all of the films increased from 1.07 (GO) to 1.10, 1.13, and 1.22 for RGO, 75%-EG/RGO, and 100%-EG, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The Raman spectra of GO, RGO, 75%-EG/RGO, and 100%-EG are shown in Figure b. All of the samples are with two typical peaks of D-peak and G-peak, which represent the sp 3 disordered defects formed by hybrid carbon and graphite carbon formed by sp 2 hybrid carbon, respectively . By calculating the intensity of the D-peak to the G-peak ( I D / I G ), the defect degree of the graphene films can be obtained.…”

Section: Results and Discussionmentioning

confidence: 99%

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Graphene Film with a Controllable Microstructure for Efficient Electrochemical Energy Storage

Jiang

Zhang

Sheng

et al. 2023

ACS Appl. Mater. Interfaces

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The agglomeration of graphene sheets and undesired pore size distribution usually lead to unsatisfactory electrochemical properties of reduced graphene oxide (RGO) film electrodes. Herein, crumpled exfoliated graphene (EG) sheets are adopted as the microstructure-regulating agent to tune the morphology and micro-/mesopore amounts with the aim of increasing active surface sites and ion transportation paths in electrodes. With the optimum ratio between EG and GO, the resulting 75%-EG/RGO shows significantly improved specific gravimetric capacitance (C s ) and rate capability when compared with pure RGO electrodes in a symmetrical supercapacitor system. Moreover, when coupling the 75%-EG/RGO cathode with a Zn anode to form a Zn ion hybrid supercapacitor (ZHS), the 75%-EG/RGO exhibits a much higher C s of 327.39 F g −1 at 0.1 A g −1 and can maintain 91.7% capacitance after 8000 cycles. Systematic ex situ X-ray diffraction (XRD) and X-ray photoelectron spectra (XPS) measurements reveal that the charge storage mechanism is based on both reversible physical adsorption and dual ion uptake. Furthermore, the quasi-solid-state flexible ZHS also presents high capacitive performance and can maintain ∼100% capacitance under various bending states, demonstrating potential application in wearable electronics. This strategy opens up a new path for constructing high-performance graphene film electrodes.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Graphene Film with a Controllable Microstructure for Efficient Electrochemical Energy Storage

Jiang

Zhang

Sheng

et al. 2023

ACS Appl. Mater. Interfaces

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show abstract

“…[ 39,40 ] Interestingly, compared with the location of the C=O group and the C–H bonds in Fourier‐transform infrared (FT‐IR) spectra for the pure organic molecules, the stretching vibration of the C=O group and the C–H bonds in organic‐based composites show a shift, indicating the integration of organic molecules and conductive carbon substrates via non‐covalent π – π interactions. [ 41–44 ] Furthermore, Wang's group shows that the adsorption energy can reach 29.9 kJ mol −1 with the anthraquinone‐2‐sulfonate anion parallel to the bare graphene sheet, further demonstrating the existence of non‐covalent π − π interactions. [ 45 ]…”

Section: Main Discussionmentioning

confidence: 99%

Aqueous Organic Batteries Using the Proton as a Charge Carrier

Shi

Das

et al. 2023

Advanced Materials

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Benefiting from the merits of low cost, non‐flammability and high operational safety, aqueous rechargeable batteries have emerged as promising candidates for large‐scale energy storage applications. Among various metal‐ion/non‐metallic charge carriers, proton (H+) as a charge carrier possesses numerous unique properties such as a fast proton diffusion dynamics, a low molar mass and a small hydrated ion radius, which endow aqueous proton batteries (APBs) with a salient rate capability, a long‐term life span and an excellent low‐temperature electrochemical performance. In addition, redox‐active organic molecules, with the advantages of structural diversity, rich proton‐storage sites and abundant resources, are considered as attractive electrode materials for APBs. However, as far as application is concerned, the charge storage and transport mechanisms of organic electrodes in APBs is still in infancy. Therefore, finding suitable electrode materials and uncovering the H+ storage mechanisms are significant for the applications of organic materials in APBs. Herein, the latest research progresses on organic materials such as small molecules and polymers for APBs are reviewed. Furthermore, a comprehensive summary and evaluation of APBs employing organic electrodes as anode and/or cathode is provided, especially on their low‐temperature and high‐power performances, along with systematic discussions for guiding the rational design and the construction of APBs based on organic electrodes.This article is protected by copyright. All rights reserved

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“…[2][3][4] Both double-layer electrochemical capacitors and pseudocapacitors store energy via reversible and rapid faradaic redox reactions on the surface of electrocatalytic species, and electrochemical double-layer capacitors (EDLCs) typically give an elevated P d (10k W kg −1 ) and exhibit exceptional cycling characteristics (10 4 cycles). 5,6 Thus, faradaic pseudocapacitors have more specic capacitance and specic energy than conventional capacitors (100 W h kg −1 ). In comparison, pseudocapacitors have parts that store both chemical and physical energy.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of the SnTe/SnSe binary nanocomposite via a hydrothermal route for flexible solid-state supercapacitors

et al. 2023

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Redox-active sodium 3,4-dihydroxy anthraquinone-2-sulfonate anchored on reduced graphene oxide for high-performance Zn-ion hybrid capacitors

Abstract: The exploration for high-performance Zn-ion hybrid capacitors (ZIHCs) has attracted extensive attention recently. However, achieving high energy and power density has always been a great challenge for the development of...

Cited by 27 publications

References 74 publications

Graphene Film with a Controllable Microstructure for Efficient Electrochemical Energy Storage

Graphene Film with a Controllable Microstructure for Efficient Electrochemical Energy Storage

Aqueous Organic Batteries Using the Proton as a Charge Carrier

Facile synthesis of the SnTe/SnSe binary nanocomposite via a hydrothermal route for flexible solid-state supercapacitors

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