Functionalized Graphene-MoO2 frameworks: An efficient electrocatalyst for iron-based redox flow battery and supercapacitor application with enhanced electrochemical performances

Ramadas, Aditya; Dinesh, Anarghya; Anantha, M.S.; Rani, Manviri; Venkatesh, Krishna; Patil, Jayatirtha M.; Mohan, C.B.; Muralidhara, H.B.; Kumar, Kumarswamy Yogesh

doi:10.1016/j.jpcs.2022.110990

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…These are the recent key solutions for the sustainable energy storage technologies and also deliver the ideal characteristics such as good storage capabilities, quick responsiveness, cost-effectiveness and eco-friendly nature. 6,15,18 Traditionally, RFBs and supercapacitors operate as symbiotic devices. The supercapacitor readily transferred energy, while the RFBs stored and generated energy to fill the needs of a power bank.…”

Section: Introductionmentioning

confidence: 99%

“…While environmentally friendly and cost-effective salts used in IRFBs offer significant advantages, limitations arise regarding the stability of the electrolyte and the deposition of active materials on the surfaces of the membrane and electrodes. 13,18,31 This deposition negatively impacts the reversibility of the Fe 3+ /Fe 2+ redox reactions that occur in the positive half-cell of the battery. To address this issue and improve electrode stability and reversibility, it is crucial to modify the electrode by incorporating an electrochemically active catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Synergetic Functionalization of the ZnS@ASCs Biocomposite: For Enhanced Electrochemical Performance of Redox Flow Batteries and Supercapacitors

Basavaraj Chavati,

Kumar Basavaraju,

Nayaka Yanjerappa

et al. 2024

ACS Appl. Electron. Mater.

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Redox flow batteries and supercapacitors are attracting significant attention worldwide because of their roles in grid-level energy storage and smaller-scale applications. Both of these technologies play unique roles in the operation of electrochemical energy storage devices. An investigation of ZnS@ASCs composite materials shows their excellent electrochemical performance. The cost-effective, efficient, and straightforward synthesis of ZnS and their composites with bioactivated carbon was performed using a hydrothermal technique. In the context of redox flow batteries (RFBs), the ZnS@ASCs composite material was utilized as a positive electrode with an area of 132 cm2. It acted as an electrocatalyst for both vanadium redox flow batteries (VRFBs) and iron redox flow batteries (IRFBs). The stability of the ZnS@ASC-treated graphite felt electrode was demonstrated up to 200 cycles for VRFBs and 25 cycles for IRFBs, resulting in satisfactory Coulombic efficiencies (CEs) of 86.66% and 89.26% for VRFB and IRFB, respectively. Furthermore, the ZnS@ASCs composite material is applied as a coating onto a Toray carbon sheet and is utilized as the active electrode for supercapacitor applications. This working electrode exhibited a significantly high specific capacitance of 1070.80 F/g at 4 mA/g in a sulfuric acid (H2SO4) solution. The electrode maintained impressive CEs of 97.41% and 95.87% of its initial performance after undergoing 3500 charge–discharge cycles. Notably, the ZnS@ASCs composite material has been shown to be an efficient and exceptional electrochemically active material for various energy storage devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergetic Functionalization of the ZnS@ASCs Biocomposite: For Enhanced Electrochemical Performance of Redox Flow Batteries and Supercapacitors

Basavaraj Chavati,

Kumar Basavaraju,

Nayaka Yanjerappa

et al. 2024

ACS Appl. Electron. Mater.

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Progress in Profitable Fe‐Based Flow Batteries for Broad‐Scale Energy Storage

Huan,

Sun,

2024

WIREs Energy & Environment

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The development of an affordable, environmentally acceptable alternative energy storage devices are required to address the present energy problem and offer a viable solution for renewable energy sources with intermittency. As a broad‐scale energy storage technology, redox flow battery (RFB) has broad application prospects. However, commercializing mainstream all‐vanadium RFBs is slow due to the high cost. Owing to the environmental friendliness and affordable iron‐based raw materials the interest on iron‐based RFBs are increasing. The aim of the perspective is to offer a quick overview on research progress of iron‐based RFBs, including their research status, history, and development of essential components. Influencing factors such as conductivity, solubility, hydrogen evolution, reaction kinetics, etc. are summarized comprehensively. Further research was identified on reducing the hydrogen evolution on the electrodes, exploring economical and easy‐to‐recycle solutions for active materials, improving the stability of electrodes, and developing new electrode structures.

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Graphene-Based Electrocatalysts

Adriani,

Ensafi

2024

Engineering Materials

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Functionalized Graphene-MoO2 frameworks: An efficient electrocatalyst for iron-based redox flow battery and supercapacitor application with enhanced electrochemical performances

Cited by 4 publications

References 35 publications

Synergetic Functionalization of the ZnS@ASCs Biocomposite: For Enhanced Electrochemical Performance of Redox Flow Batteries and Supercapacitors

Synergetic Functionalization of the ZnS@ASCs Biocomposite: For Enhanced Electrochemical Performance of Redox Flow Batteries and Supercapacitors

Progress in Profitable Fe‐Based Flow Batteries for Broad‐Scale Energy Storage

Graphene-Based Electrocatalysts

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