超薄非晶MoO3共形涂层构建异质界面，使V5O12·6H2O具有优异的水性锌电池性能

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-01-21 DOI:10.1021/acs.nanolett.4c04942

Zhen Sun, Jiahuan Yuan, Yi Wang, Zengfu Chi, Linlin Lv, Haixu Wang, Weiwei Luo, Quanping Diao, Haijiao Xie, Xiang Cai

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引用次数: 0

摘要

层状V5O12·6H2O是一种很有前途的水性锌电池（azb）材料，但电化学性能一般。其中，以非晶态三氧化钼为异质材料，在V5O12·6H2O表面形成异质界面，使V5O12·6H2O的电荷存储性能得到明显改善。无定形三氧化钼作为质子储层，在V5O12·6H2O（001）面构成的异质界面上形成了沿[001]取向的内建电场，为离子的储存提供了新的扩散途径和额外的位点。因此，V5O12·6H2O具有显著改善的动力学，实现了510 mAh g-1的超高容量，更好的倍率能力和更长的使用寿命。这项工作为设计先进的azb阴极材料的异质结构提供了一般指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Heterointerface Built Up by Ultrathin Amorphous MoO3 Conformal Coating Enables V5O12·6H2O with Superior Properties for Aqueous Zinc Batteries

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Heterointerface Built Up by Ultrathin Amorphous MoO3 Conformal Coating Enables V5O12·6H2O with Superior Properties for Aqueous Zinc Batteries

Layered V₅O₁₂·6H₂O is a promising candidate for aqueous zinc batteries (AZBs) but with moderate electrochemical performances. Herein, the charge storage properties of V₅O₁₂·6H₂O are markedly improved by building up the heterointerface on its surface using amorphous molybdenum trioxide as the heteromaterial. The amorphous molybdenum trioxide functioning as the proton reservoir enables the proton-involved electrochemical reactions and induces the formation of a built-in electric field along the [001] orientation at the heterointerface constructed by the (001) plane of V₅O₁₂·6H₂O, which could provide new diffusion pathways and extra sites for ion storage. As a result, V₅O₁₂·6H₂O with significantly improved kinetics realizes an ultrahigh capacity of 510 mAh g^–1, better rate capability, and prolonged lifespan. This work provides general guidance for designing advanced cathode materials for AZBs with respect to heterostructure.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.