Carbon materials for ion-intercalation involved rechargeable battery technologies

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 50(4), P. 2388 - 2443

Published: Dec. 21, 2020

The development of carbon electrode materials for rechargeable batteries is reviewed from the perspective structural features, electrochemistry, and devices.

Language: Английский

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A Freestanding 3D Heterostructure Film Stitched by MOF‐Derived Carbon Nanotube Microsphere Superstructure and Reduced Graphene Oxide Sheets: A Superior Multifunctional Electrode for Overall Water Splitting and Zn–Air Batteries

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(48)

Published: Oct. 19, 2020

Abstract Developing a scalable approach to construct efficient and multifunctional electrodes for the hydrogen evolution reaction (HER), oxygen (OER), reduction (ORR) is an urgent need overall water splitting zinc–air batteries. In this work, freestanding 3D heterostructure film synthesized from Ni‐centered metal−organic framework (MOF)/graphene oxide. During pyrolysis process, 1D carbon nanotubes formed MOF link with 2D reduced graphene oxide sheets stitch film. The results of experiments theoretical calculations show that synergistic effect N‐doped shell Ni nanoparticles leads optimized excellent electrocatalytic activity. Low overpotentials 95 260 mV are merely needed HER OER, respectively, reach current density 10 mA cm −2 . addition, high half‐wave potential 0.875 V obtained ORR, which comparable Pt/RuO 2 ranks among top non‐noble‐metal catalysts. use “all‐in‐one” as electrode performance homemade electrolyzer battery, indicating practical applications.

Language: Английский

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Designing High‐Valence Metal Sites for Electrochemical Water Splitting

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(16)

Published: Feb. 17, 2021

Abstract Electrochemical water splitting is a critical energy conversion process for producing clean and sustainable hydrogen; this relies on low‐cost, highly active, durable oxygen evolution reaction/hydrogen reaction electrocatalysts. Metal cations (including transition metal noble cations), particularly high‐valence that show high catalytic activity can serve as the main active sites in electrochemical processes, have received special attention developing advanced In review, heterogenous electrocatalyst design strategies based are presented, associated materials designed summarized. discussion, emphasis given to combined with modulation of phase/electronic/defect structure performance improvement. Specifically, importance using situ operando techniques track real metal‐based during highlighted. Remaining challenges future research directions also proposed. It expected comprehensive discussion electrocatalysts containing be instructive further explore other energy‐related reactions.

Language: Английский

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Hierarchical Co and Nb dual-doped MoS2 nanosheets shelled micro-TiO2 hollow spheres as effective multifunctional electrocatalysts for HER, OER, and ORR

Nano Energy, Journal Year: 2021, Volume and Issue: 82, P. 105750 - 105750

Published: Jan. 10, 2021

Language: Английский

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Carbon-based materials for fast charging lithium-ion batteries

Carbon, Journal Year: 2021, Volume and Issue: 183, P. 721 - 734

Published: July 21, 2021

Language: Английский

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First-row transition metal-based materials derived from bimetallic metal–organic frameworks as highly efficient electrocatalysts for electrochemical water splitting

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(8), P. 3119 - 3151

Published: Jan. 1, 2022

Electrochemical water splitting is a mature technology for hydrogen generation.

Language: Английский

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Tuning the electronic structure of the earth-abundant electrocatalysts for oxygen evolution reaction (OER) to achieve efficient alkaline water splitting – A review

Journal of Energy Chemistry, Journal Year: 2020, Volume and Issue: 56, P. 299 - 342

Published: Aug. 11, 2020

Language: Английский

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In Situ Grown Co‐Based Interstitial Compounds: Non‐3d Metal and Non‐Metal Dual Modulation Boosts Alkaline and Acidic Hydrogen Electrocatalysis

Small, Journal Year: 2021, Volume and Issue: 18(9)

Published: Dec. 16, 2021

Interfacial engineering and elemental doping are the two parameters to enhance catalytic behavior of cobalt nitrides for alkaline hydrogen evolution reaction (HER). However, simultaneously combining these improve HER properties in media is rarely reported also remains challenging acidic media. Herein, it demonstrated that high-valence non-3d metal non-metal integration can achieve Co-based nitride/oxide interstitial compound phase boundaries on stainless steel mesh (denoted Mo-Co5.47 N/N-CoO) efficient Density functional theory (DFT) calculations show unique structure does not only realize multi-active sites, enhanced water dissociation kinetics, low adsorption free energy media, but enhances positive charge density ions (H+ ) effectively allow H+ receive electrons from catalysts surface toward promoting As a result, as-prepared N/N-CoO demands overpotential -28 mV@10 mA cm-2 an medium, superior commercial Pt/C at current > 44 medium. This work paves useful strategy design cobalt-based electrocatalysts beyond.

Language: Английский

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Structural advantages and enhancement strategies of heterostructure water-splitting electrocatalysts

Cell Reports Physical Science, Journal Year: 2021, Volume and Issue: 2(6), P. 100443 - 100443

Published: June 1, 2021

As an environmentally friendly and resource-rich energy, hydrogen is recognized as ideal alternative to conventional fossil fuels. Among various methods for production, electrochemical water splitting one of the most promising approaches, which evolution reaction (HER) oxygen (OER) are crucial determining performance. Recently, much research has shown heterostructure catalysts possess competitive electrocatalytic performance toward HER OER. However, compared with their theoretical activities, many remain somewhat unsatisfactory have a long way go. With aim ultimately enhancing performance, recent approaches modification summarized in this review. Typical synthetic strategies, such design nanostructure, chemical doping, heterostructure-based hybrids synthesis, discussed, advantages highlighted. Finally, perspectives on future direction electrocatalysts presented.

Language: Английский

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Structural Design Strategy and Active Site Regulation of High‐Efficient Bifunctional Oxygen Reaction Electrocatalysts for Zn–Air Battery

Small, Journal Year: 2021, Volume and Issue: 17(48)

Published: June 4, 2021

Zinc-air batteries (ZABs) exhibit high energy density as well flexibility, safety, and portability, thereby fulfilling the requirements of power consumer batteries. However, limited efficiency stability are still significant challenge. Oxygen reduction reaction (ORR) oxygen evolution (OER) two crucial cathode reactions in ZABs. Development bifunctional ORR/OER catalysts with is critical to improve performance In this review, ORR OER mechanisms first explained. Further, design principles electrocatalysts discussed terms atomic adjustment mechanism structural conjunction latest reported situ characterization techniques, which provide useful insights on catalyst. The improvement efficiency, stability, environmental adaptability new hybrid ZAB by inclusion additional reaction, including introduction transition-metal redox couples addition modifiers electrolyte change pathway, also summarized. Finally, current challenges future research directions presented.

Language: Английский

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