Flexible electrochemical energy storage devices and related applications: recent progress and challenges

Chemical Science, Journal Year: 2024, Volume and Issue: 15(29), P. 11229 - 11266

Published: Jan. 1, 2024

This paper reviews advancements in flexible carbon-based and polymer gel materials for various types of energy storage systems, providing guidance future development next-generation wearable electronics.

Language: Английский

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Atomically dispersed multi-site catalysts: bifunctional oxygen electrocatalysts boost flexible zinc–air battery performance

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 4847 - 4870

Published: Jan. 1, 2024

Based on the advancements in atomically dispersed multi-site catalysts for FZABs, this review discusses design methodologies to regulate performance of bifunctional oxygen electrocatalysts from electronic and geometric structures.

Language: Английский

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Asymmetric Coordination of Bimetallic Fe–Co Single-Atom Pairs toward Enhanced Bifunctional Activity for Rechargeable Zinc–Air Batteries

ACS Nano, Journal Year: 2024, Volume and Issue: 18(20), P. 13006 - 13018

Published: May 13, 2024

The advancement of rechargeable zinc–air batteries (RZABs) faces challenges from the pronounced polarization and sluggish kinetics oxygen reduction evolution reactions (ORR OER). Single-atom catalysts offer an effective solution, yet their insufficient or singular catalytic activity hinders development. In this work, a dual single-atom catalyst, FeCo-SAs, was fabricated, featuring atomically dispersed N3–Fe–Co–N4 sites on N-doped graphene nanosheets for bifunctional activity. Introducing Co into Fe single-atoms secondary pyrolysis altered coordination with N, creating asymmetric environment that promoted charge transfer increased density states near Fermi level. This catalyst achieved narrow potential gap 0.616 V, half-wave 0.884 V ORR (vs reversible hydrogen electrode) low OER overpotential 270 mV at 10 mA cm–2. Owing to superior RZABs exhibited peak power 203.36 mW cm–2 extended cycle life over 550 h, exceeding commercial Pt/C + IrO2 catalyst. Furthermore, flexible FeCo-SAs demonstrated promising future bimetallic pairs in wearable energy storage devices.

Language: Английский

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Bimetallic Single-Atom Catalysts for Water Splitting

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 25, 2024

Abstract Green hydrogen from water splitting has emerged as a critical energy vector with the potential to spearhead global transition fossil fuel-independent society. The field of catalysis been revolutionized by single-atom catalysts (SACs), which exhibit unique and intricate interactions between atomically dispersed metal atoms their supports. Recently, bimetallic SACs (bimSACs) have garnered significant attention for leveraging synergistic functions two ions coordinated on appropriately designed BimSACs offer an avenue rich metal–metal metal–support cooperativity, potentially addressing current limitations in effectively furnishing transformations involve synchronous proton–electron exchanges, substrate activation reversible redox cycles, simultaneous multi-electron transfer, regulation spin states, tuning electronic properties, cyclic states low energies. This review aims encapsulate growing advancements bimSACs, emphasis pivotal role generation via splitting. We subsequently delve into advanced experimental methodologies elaborate characterization SACs, elucidate discuss local coordination environment. Overall, we present comprehensive discussion deployment bimSACs both evolution reaction oxygen reaction, half-reactions electrolysis process.

Language: Английский

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Aluminum–air batteries: current advances and promises with future directions

RSC Advances, Journal Year: 2024, Volume and Issue: 14(25), P. 17628 - 17663

Published: Jan. 1, 2024

Owing to their attractive energy density of about 8.1 kW h kg −1 and specific capacity 2.9 A g , aluminum–air (Al–air) batteries have become the focus research.

Language: Английский

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Fe─N₄ and Fe₇Co₃ Nanoalloy Dual‐Site Modulation by Skeleton Defect in N‐Doped Graphene Aerogel for Enhanced Bifunctional Oxygen Electrocatalyst in Zinc‐air Battery

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract The dual‐site electrocatalysts formed by metal single atoms combines with nanoparticles represent a promising strategy to enhance both oxygen reduction reaction (ORR) and evolution (OER) performance. Herein, defect engineering is applied ORR OER electrocatalysts. Its design, synthesis, structural properties, catalytic performance experimentally theoretically are insightfully studied for the single‐atomic Fe─N 4 adjacent Fe 7 Co 3 nanoalloy (FeCo NA ) as loading on nitrogen‐doped graphene aerogel (Fe─N/FeCo@NGA). high‐density dual‐sites, together good electronic conductivity of NGA, synergistically improve structure superior electrocatalytic activity. half‐wave potential Fe─N/FeCo@NGA in 0.92 V overpotential it 1.58 V. Corresponding all‐solid‐state Zn‐air battery demonstrates peak power density 147.6 mW cm −2 charge/discharge durability over 140 h. Theoretical calculations reveal that Fe‐N FeCo skeleton optimized further refine local structure, modulating tensile force O─O bond * OOH intermediate, leading its spontaneous dissociation facilitating significantly reduced energy barrier. This work takes shortcut application development highly efficient bifunctional atoms.

Language: Английский

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Layered double hydroxide-based nanomaterials for supercapacitors and batteries: Strategies and mechanisms

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101410 - 101410

Published: Dec. 1, 2024

Language: Английский

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Biphase Alloy Nanoheterojunction Encapsulated within N‐Doped Carbon Nanotubes as Bifunctional Oxygen Electrocatalyst for High‐Performance Zn‐Air and Mg‐Air Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract N‐doped carbon confined alloy catalysts possess considerable potential in facilitating oxygen electrocatalytic reaction and consequent applications metal air batteries, but the sluggish catalytic kinetics high barrier of reduction (ORR) remain bottleneck restricting its further development. Here, a novel CoFe‐NiFe biphase nanoheterojunction encapsulated within nanotubes (CoFe‐NiFe@NCNT) is fabricated via hydrothermal carbothermic approach. Owing to plentiful active sites electrical conductance, difference between OER ORR amounts merely 0.68 V. Simultaneously, performance Zn‐air Mg‐air batteries assembled by CoFe‐NiFe@NCNT serving as air‐cathode are superior that commercial Pt/C + RuO 2 . The DFT outcomes reveal transformation *OOH *O rate‐determining step (RDS) ORR/OER. Also, synergy heterojunction conducive reduce energy barrier. This study offers profound understanding toward structural design electrocatalysts utilization metal‐air for portable wearable electronic apparatuses.

Language: Английский

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Air-breathing cathode for aluminum–air battery: From architecture to fabrication and evaluation

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 163, P. 100942 - 100942

Published: Feb. 1, 2025

Language: Английский

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A novel self-powered electrochemical sensor for ultrasensitive detection of glucose based on neutral zinc-air battery assembled with Cu1-Co3-NC catalysts

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113045 - 113045

Published: Feb. 1, 2025

Language: Английский

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