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Aqueous zinc-ion batteries (ZIBs) are one of the most ideal candidates for grid-scale energy storage applications due to their excellent price and safety advantages. However, formation of Zn dendrites and continuous side reactions during cycling result in serious instability problems for ZIBs. In this work, the authors develop a facile and versatile plasma-induced nitrogen-doped Zn (N-Zn) foil for dendrite-free Zn metal anode. Benefitting from the uniform nucleation sites and enhanced surface kinetics, the N-Zn anode exhibits exceptionally low overpotential (around 23 mV) at 1 mA cm and can be cycled for over 3000 h under 1 mA cm because of the enhanced interface behavior. The potential application of N-Zn anode is also confirmed by introducing a full Zn/MnO battery with outstanding capacity stability for 2000 cycles at 1 A g . Overall, this work offers new fundamental insights into homogenizing Zn electrodeposition processes by pre-introduced active nucleation sites and provides a novel direction of interface design engineering for ultra-stable Zn metal anode.
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http://dx.doi.org/10.1002/advs.202103952 | DOI Listing |
J Phys Chem Lett
September 2025
College of Materials Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, P. R. China.
Aqueous zinc-ion microbatteries exhibit promising prospects for wearable devices due to their high safety and cost-effectiveness but face challenges such as low energy density and short cycle life. To address these challenges, a dual-plating flexible Zn-Br microbattery was developed using freestanding MXene films as a zinc metal free anode. The MXene anode retains no redundant Zn, as Zn from the electrolyte undergoes deposition/stripping reactions on its substrate, thereby eliminating the necessity for excess zinc.
View Article and Find Full Text PDFSmall
September 2025
Key Laboratory of Electrochemical Power Sources of Hubei Province, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.
Hybrid artificial layer based on inorganic/polymer composite endows superior toughness and mechanical strength, which can achieve high stability of lithium metal anode. However, the large particle size and uneven distribution of inorganic fillers hinder the uniform flow of lithium ions across the membrane, making it difficult to achieve smooth lithium metal deposition/stripping. In this work, a chemical lithiation-induced defluorination strategy is proposed to engineer poly(vinylidene difluoride) (PVDF)-based artificial layers, enabling in situ incorporation of highly dispersed LiF nanofiller within the polymer matrix and precise control over the LiF content.
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September 2025
School of Energy and Chemical Engineering, UNIST, Ulsan, 44919, South Korea.
All-solid-state batteries (ASSBs), equipped with highly ion-conductive sulfide solid electrolytes and utilizing lithium plating/stripping as anode electrochemistry, suffer from 1) chemical vulnerability of the electrolytes with lithium and 2) physical growth of lithium to penetrate the electrolytes. By employing an ordered mesoporous graphitic carbon (OMGC) framework between a sulfide electrolyte layer and a copper current collector in ASSB, the concerns by are addressed 1) minimizing the chemically vulnerable interface (CVI) between electric conductor and solid electrolyte, and 2) allowing lithium ingrowth toward the porous structure via Coble creep, a diffusional deformation mechanism of lithium metal along the lithium-carbon interface. The void volume of the framework is fully filled with lithium metal, despite ionic pathways not being provided separately, even without additional lithiophiles, when an enough amount of lithium is allowed to be plated.
View Article and Find Full Text PDFChem Commun (Camb)
September 2025
Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China.
Hard carbon (HC) has emerged as a promising anode material for sodium-ion batteries (SIBs) owing to its low cost, abundant renewable resources, and high specific capacity. However, its practical application is significantly hindered by the severe initial irreversible capacity loss resulting from sodium consumption during the first cycle. To address this issue, a variety of presodiation strategies have been developed to compensate for the sodium loss and improve the initial coulombic efficiency.
View Article and Find Full Text PDFACS Electrochem
September 2025
Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom.
The surface structure of an electrocatalyst plays a crucial role in determining the activity. As a model system, gold has been widely investigated as an electro-oxidation catalyst, although there has been much less research on the oxygen evolution reaction (OER) in the potential region of gold oxidation. Here, we combine voltammetric scanning electrochemical cell microscopy (SECCM) and electron backscatter diffraction (EBSD), at different spatial and angular resolutions, respectively, to correlate the local crystallographic structure of polycrystalline goldfocusing on grains close to (113), (011), (114), and (111) orientationswith the electrocatalytic behavior for the OER.
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