From medium- to high-entropy hydroxides for hybrid supercapacitors: a review

IF 10.7 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Journal of Materials Chemistry A Pub Date : 2024-10-08 DOI:10.1039/D4TA05625F
Rasmus Palm, Angélica María Baena-Moncada and Josué M. Gonçalves
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Abstract

The quest for devices with significantly higher power and energy density has made hybrid supercapacitors a promising alternative for energy storage. These devices have gained traction by combining the exceptional power density of supercapacitive materials with the high energy density of battery-type materials in a single system. Among promising battery-type materials, medium-entropy and high-entropy hydroxides (ME-hydroxides/HE-hydroxides) have attracted growing research interest due to their unique structural characteristics and their potential for tailoring functional properties. This new class of materials represents a significant departure from the traditional concept of low-entropy materials, paving the way for innovative advancements in energy storage technologies. Considering the significant advancements in the past five years, this review focuses on the recently developed ME- and HE-hydroxides for hybrid supercapacitors. It covers their synthesis methods, effective strategies, promising trends, and performance as positive electrode materials. Additionally, the review addresses the inappropriate use of the term “high-entropy”. Finally, the challenges and prospects in designing ME- and HE-hydroxides for hybrid supercapacitors are discussed, offering guidance for the development of new materials to advance future energy storage technologies.

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用于混合超级电容器的中熵氢氧化物到高熵氢氧化物:综述
对功率密度和能量密度更高的设备的追求,使混合超级电容器成为一种前景广阔的储能替代方案。这些装置将超级电容器材料的超高功率密度与电池型材料的高能量密度结合在一个系统中,因而获得了广泛的关注。在前景广阔的电池型材料中,中熵和高熵氢氧化物(ME-氢氧化物/HE-氢氧化物)因其独特的结构特性和定制功能特性的潜力,吸引了越来越多的研究兴趣。这一类新材料与传统的低熵材料概念大相径庭,为储能技术的创新发展铺平了道路。考虑到过去五年中取得的重大进展,本综述将重点介绍最近开发的用于混合超级电容器的 ME- 和 HE- 氢氧化物。内容包括它们的合成方法、有效策略、前景看好的趋势以及作为正极材料的性能。此外,还讨论了 "高熵 "一词的不当使用。最后,讨论了为混合超级电容器设计 ME- 和 HE- 氢氧化物所面临的挑战和前景,为开发新材料以推动未来储能技术的发展提供了指导。
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来源期刊
Journal of Materials Chemistry A
Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS
CiteScore
19.50
自引率
5.00%
发文量
1892
审稿时长
1.5 months
期刊介绍: The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.
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