High‐Entropy Halides for Intercalation Battery Electrode Materials

ChemElectroChem, vol. 12

Abstract

Abstract The potential use of high‐entropy materials in batteries has recently attracted considerable interest. Compared to traditional materials, high‐entropy materials exhibit a high defect density and degree of internal entropy, resulting in enhanced ion storage capabilities, ionic conductivity, and electrochemical stability. High‐entropy oxides represent a more extensively investigated material for various electrochemical applications, particularly for potential use as a cathode or electrolyte in battery applications. These multicomponent systems are distinguished by their structural complexity and exhibit enhanced cycling stability, exceeding the performance of traditional oxide materials. The exploration of high‐entropy halides as electrode materials is less extensive than that of their traditional counterparts, despite the latter being the subject of considerable research. This work offers a concise overview of how high‐entropy materials can be applied to halide phases, focusing on the transition from high‐entropy oxides to high‐entropy halides.

Authors 5

1. Sebastian Schumacher corresponding Aachen

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Institute of Energy Technologies – Fundamental Electrochemistry (IET-1) Forschungszentrum Jülich Wilhelm-Johnen-Straße 52428 Jülich Germany

   Material and Processes of Electrochemical Energy Storage and Conversion RWTH Aachen University Templergraben 55 52062 Aachen Germany

2. Evgeny V. Alekseev corresponding

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy Technologies – Fundamental Electrochemistry (IET-1) Forschungszentrum Jülich Wilhelm-Johnen-Straße 52428 Jülich Germany

3. Shicheng Yu corresponding

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy Technologies – Fundamental Electrochemistry (IET-1) Forschungszentrum Jülich Wilhelm-Johnen-Straße 52428 Jülich Germany

4. Hermann Tempel

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy Technologies – Fundamental Electrochemistry (IET-1) Forschungszentrum Jülich Wilhelm-Johnen-Straße 52428 Jülich Germany

5. Rüdiger‐A. Eichel Aachen

   Forschungszentrum Jülich · Helmholtz-Institute Münster · RWTH Aachen University

   Affiliation as printed

   Institute of Energy Materials and Devices – Helmholtz Institute Münster: Ionics in Energy Storage (IMD-4/HI MS) Forschungszentrum Jülich 48149 Münster Germany

   Institute of Energy Technologies – Fundamental Electrochemistry (IET-1) Forschungszentrum Jülich Wilhelm-Johnen-Straße 52428 Jülich Germany

   Material and Processes of Electrochemical Energy Storage and Conversion RWTH Aachen University Templergraben 55 52062 Aachen Germany