Metal-Hydroxide Organic Frameworks for Aqueous Nickel-Zinc Batteries

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-14 DOI:10.1021/acs.nanolett.4c04414

Shixian Wang, Yichun Su, Zhaocheng Jiang, Zhenyang Meng, Tianyi Wang, Meifang Yang, Weijie Zhao, Hanyi Chen, Mohsen Shakouri, Huan Pang

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Abstract

Hydroxides exhibit a high theoretical capacity for energy storage by ion release and are often intercalated with anions to enhance the ion migration kinetics. In this study, a series of metal-hydroxide organic frameworks (MHOFs) are synthesized by intercalating aromatic organic linkers into hydroxides using I-M/Ni(OH)₂ (where M = Co²⁺, Cu²⁺, Mg²⁺, Fe²⁺). The coordination environment and layer spacing (1.09 nm) of I-M/Ni(OH)₂ are explored by X-ray absorption fine structure and cryo-electron microscopy. The intercalation nanostructure improves the conductivity of the hydroxides and facilitates Zn²⁺ migration by increasing the interlayer spacing, while enhancing the rate capability and cycling stability. Consequently, the I-Co/Ni(OH)₂ material exhibites a satisfactory specific capacity of 0.35 mAh cm^–2 at 3 mA cm^–2 and a high peak power density of 6.78 mW cm^–2. This study offers a novel perspective on the design of intercalated hydroxide and provides new insights into high-performance nickel-zinc batteres.

Abstract Image

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用于水性镍锌电池的金属氢氧化物有机框架

氢氧化物通过离子释放显示出很高的理论储能能力，通常与阴离子插层以增强离子迁移动力学。本研究利用 I-M/Ni(OH)2（其中 M = Co2+、Cu2+、Mg2+、Fe2+）将芳香族有机连接体插层到氢氧化物中，合成了一系列金属氢氧化物有机框架（MHOFs）。通过 X 射线吸收精细结构和冷冻电镜研究了 I-M/Ni(OH)2的配位环境和层间距（1.09 nm）。插层纳米结构提高了氢氧化物的导电性，并通过增加层间距促进了 Zn2+ 的迁移，同时提高了速率能力和循环稳定性。因此，I-Co/Ni(OH)2 材料在 3 mA cm-2 条件下的比容量达到了令人满意的 0.35 mAh cm-2，峰值功率密度高达 6.78 mW cm-2。这项研究为插层氢氧化物的设计提供了一个新的视角，并为高性能镍锌电池提供了新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.