Bringing Order to Chaos in High-Entropy Electrocatalysts

TL;DR

This paper explores how high-entropy materials can be better designed and utilized for electrocatalysis by managing their complex compositions and structures.

Contribution

The paper introduces a new framework for advancing high-entropy electrocatalysts through precise engineering and multimodal characterization.

Findings

High-entropy materials offer diverse atomic configurations suitable for complex electrochemical reactions.

Achieving atomic-level control is crucial for harnessing the full potential of these materials.

Multimodal characterization and high-throughput methods are essential for future progress.

Abstract

High-entropy materials (HEMs) have emerged as a transformative
platform for electrocatalysis. Their appeal lies in the vast compositional
versatility enabled by the combination of five or more elements, which
generates a rich diversity of atomic configurations and surface sites
ideally suited for complex multistep reactions. Recent years have
witnessed explosive growth in the development of HEMs across diverse
material classes and their application to a wide range of electrochemical
reactions. Yet significant challenges remain to fully harness their
capabilities while managing their intrinsic structural and chemical
complexity. Advancing the field requires exploring compositional space,
pinpointing reaction sites, and achieving atomic-level control of
surface composition and organization. Much remains to be done, calling
for breakthroughs in materials design, characterization, and synthesis
strategies and technologies. Ultimately, as highlighted here, beyond
electrocatalytic applications, HEMs embody a new paradigm in materials
discovery, linking precise engineering, correlative multimodal characterization,
and high-throughput experimentation and computation.

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