Fundamental Understanding of Hydrogen Evolution Reaction on Zinc Anode Surface: A First-Principles Study

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Feb. 6, 2024

Hydrogen evolution reaction (HER) has become a key factor affecting the cycling stability of aqueous Zn-ion batteries, while corresponding fundamental issues involving HER are still unclear. Herein, mechanisms on various crystalline surfaces have been investigated by first-principle calculations based density functional theory. It is found that Volmer step rate-limiting Zn (002) and (100) surfaces, while, rates (101), (102) (103) determined Tafel step. Moreover, correlation between activity generalized coordination number ([Formula: see text]) at revealed. The relatively weaker surface can be attributed to higher [Formula: text] atom. atomically uneven shows significantly than flat as atom lowered. proposed descriptor activity. Tuning would vital strategy inhibit anode presented theoretical studies. Furthermore, this work provides basis for in-depth understanding surface.

Language: Английский

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A Sustainable Dual Cross-Linked Cellulose Hydrogel Electrolyte for High-Performance Zinc-Metal Batteries

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Feb. 2, 2024

Aqueous rechargeable Zn-metal batteries (ARZBs) are considered one of the most promising candidates for grid-scale energy storage. However, their widespread commercial application is largely plagued by three major challenges: The uncontrollable Zn dendrites, notorious parasitic side reactions, and sluggish

Language: Английский

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Mapping the design of electrolyte additive for stabilizing zinc anode in aqueous zinc ion batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 68, P. 103364 - 103364

Published: March 24, 2024

Language: Английский

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Strategies for pH regulation in aqueous zinc ion batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 67, P. 103248 - 103248

Published: Feb. 5, 2024

Aqueous zinc ions batteries (AZIBs) using non-organic electrolytes have garnered sustained interest as a future energy storage technology, primarily due to their low cost, environmental friendliness, and intrinsic safety. However, ion suffer from series of serious challenges, including hydrogen evolution reaction (HER) at the anode, surface passivation, dendrite formation, well limited operating voltage comparatively density. These factors are all influenced by concentration H+ in electrolyte (i.e., pH), its fluctuations during cycle process. To date, there remains lack systematic evaluation correlation between pH value challenges faced AZIBs, or focused review how influences electrochemical performance AZIBs strategies that can be used improve cell efficiency. In this we emphasize strong detail research progress made recent years relating additives, separator modification, interfacial protective layers, battery system design, with particular focus on regulatory mechanisms associated control. On basis, propose important focuses suggestions for onward development AZIBs.

Language: Английский

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Design Principles and Mechanistic Understandings of Non-Noble-Metal Bifunctional Electrocatalysts for Zinc–Air Batteries

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: March 26, 2024

Zinc-air batteries (ZABs) are promising energy storage systems because of high theoretical density, safety, low cost, and abundance zinc. However, the slow multi-step reaction oxygen heavy reliance on noble-metal catalysts hinder practical applications ZABs. Therefore, feasible advanced non-noble-metal electrocatalysts for air cathodes need to be identified promote catalytic reaction. In this review, we initially introduced advancement ZABs in past two decades provided an overview key developments field. Then, discussed working mechanism design bifunctional from perspective morphology design, crystal structure tuning, interface strategy, atomic engineering. We also included studies, machine learning, characterization technologies provide a comprehensive understanding structure-performance relationship pathways redox reactions. Finally, challenges prospects related designing

Language: Английский

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Realizing highly stable zinc anode via an electrolyte additive shield layer and electrochemical in-situ interface

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 151104 - 151104

Published: April 8, 2024

Language: Английский

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Surface Patterning of Metal Zinc Electrode with an In-Region Zincophilic Interface for High-Rate and Long-Cycle-Life Zinc Metal Anode

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Feb. 9, 2024

Abstract The undesirable dendrite growth induced by non-planar zinc (Zn) deposition and low Coulombic efficiency resulting from severe side reactions have been long-standing challenges for metallic Zn anodes substantially impede the practical application of rechargeable aqueous metal batteries (ZMBs). Herein, we present a strategy achieving high-rate long-cycle-life anode patterning foil surfaces endowing Zn-Indium (Zn-In) interface in microchannels. accumulation electrons microchannel zincophilicity Zn-In promote preferential heteroepitaxial region enhance tolerance electrode at high current densities. Meanwhile, electron aggregation accelerates dissolution non-(002) plane atoms on array surface, thereby directing subsequent homoepitaxial surface. Consequently, planar dendrite-free long-term cycling stability are achieved (5,050 h 10.0 mA cm −2 27,000 cycles 20.0 ). Furthermore, Zn/I 2 full cell assembled pairing with such an can maintain good 3,500 5.0 C, demonstrating potential as-prepared ZnIn high-performance ZMBs.

Language: Английский

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Ultrathin Reed Membranes: Nature's Intimate Ion‐Regulation Skins Safeguarding Zinc Metal Anodes in Aqueous Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(13)

Published: Feb. 21, 2024

Abstract The practical realization of aqueous zinc‐ion batteries relies crucially on effective interphases governing Zn electrodeposition chemistry. In this study, an innovative solution by introducing ultrathin (≈2 µm) biomass membrane as intimate artificial interface, functioning nature's ion‐regulation skin to protect zinc metal anodes is proposed. Capitalizing the inherent properties natural reed membrane, including multiscale ion transport tunnels, abundant ─OH groups, and remarkable mechanical integrity, demonstrates efficacy in regulating uniform rapid 2+ transport, promoting desolvation, (002) plane electrodeposition. Importantly, a unique situ electrochemical Zn─O bond formation mechanism between electrode upon cycling elucidated, resulting robustly adhered interface covering anode surface, ultimately ensuring dendrite‐free highly reversible anodes. Consequently, approach achieves prolonged cycle life for over 1450 h at 3 mA cm −2 /1.5 mAh symmetric Zn//Zn cells. Moreover, exceptional cyclic performance (88.95%, 4000 cycles) obtained active carbon‐based cells with mass loading 5.8 mg . offers cost‐effective environmentally friendly strategy achieving stable batteries.

Language: Английский

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V2O5-based cathodes for aqueous zinc ion batteries: Mechanisms, preparations, modifications, and electrochemistry

Nano Energy, Journal Year: 2024, Volume and Issue: 127, P. 109691 - 109691

Published: May 6, 2024

Language: Английский

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Pre-intercalation strategy in vanadium oxides cathodes for aqueous zinc ion batteries: Review and prospects

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 84, P. 110808 - 110808

Published: Feb. 9, 2024

Language: Английский

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