高熵氧化物的稳定、表征和电化学应用：晶相-性质关系的关键评估,Advanced Functional Materials

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高熵氧化物的稳定、表征和电化学应用：晶相-性质关系的关键评估
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-08-03 , DOI: 10.1002/adfm.202205142
Gracita M. Tomboc _{1,

2} , Xiandi Zhang ₃ , Songa Choi ₁ , Daekyu Kim ₃ , Lawrence Yoon Suk Lee ₃ , Kwangyeol Lee ₁

Affiliation

高熵氧化物（HEO）是一类新兴的能量转换和存储技术材料，由于其独特的结构、复杂的化学计量和相应的协同效应而引起了人们的广泛关注。尽管近年来与 HEO 相关的研究报道越来越多，但仍缺乏其结构特性和电化学活性的详细信息。本文概述了 HEO 在设计、合成、表征、理论计算和电化学性能方面的令人兴奋的发展。介绍了 HEO 的基本原理，包括其严格的定义、主要特征和四核方面的影响。对不同的 HEOs 合成方法进行了分类，以突出参数优化对确保 HEOs 单相稳定性的重要性。还阐述了局部晶格和原子分布表征技术的进展以及基于计算技术的组合筛选方法的基本原理。回顾了最近针对锂离子电池和氧催化的基于 HEO 的电极/电催化剂，以评估 HEO 的潜在应用。这篇综述提请注意 HEO 的关键挑战，这些挑战值得在未来进行更广泛的探索。

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Stabilization, Characterization, and Electrochemical Applications of High-Entropy Oxides: Critical Assessment of Crystal Phase–Properties Relationship

High-entropy oxides (HEOs), a class of newly emerging energy conversion and storage technology materials, have gained significant interest due to their unique structure, complex stoichiometry, and corresponding synergetic effect. Despite the increasing number of reported studies related to HEOs in recent years, details of their structural properties and electrochemical activities are still lacking. Herein, the exciting developments of HEOs regarding their design, synthesis, characterization, theoretical calculations, and electrochemical performances are outlined. The fundamentals of HEOs, including their strict definition, main features, and four-core aspect effects are presented. The different synthetic methods of HEOs are categorized to highlight the significance of parameter optimization to ensure the single-phase stability of HEOs. The advances in characterization techniques on the local lattice and atomic distribution and the basic principles of combinatorial screening methods based on computational techniques are also elaborated. Recent HEO-based electrode/electrocatalysts toward Li-ion batteries and oxygen catalysis are reviewed to assess the potential applications of HEOs. This review draws attention to the critical challenges of HEOs that are worth more extensive explorations in the future.

更新日期：2022-08-03

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