Lithium phosphosulfide electrolytes for solid-state batteries: Part I

Functional Materials Letters, vol. 15

Abstract

A high performance and stable Li-ion conductive solid electrolyte is one of the key components for the future all-solid-state batteries with metallic lithium anodes. Phosphate, oxide and phosphosulfide-based inorganic solid electrolytes are currently under development. High ambient temperature Li-ion conductivities amounting up to 10[Formula: see text] S cm[Formula: see text] for the best performing electrolytes distinguish the phosphosulfides from the other material systems. Part I of the review starts with the motivation and background for the development of Li-phosphosulfide electrolytes followed by an overview of four different types of phosphosulfide electrolytes; the Li–P–S, thio-LiSICon, LGPS and the Argyrodite-type electrolytes. The core of part I is concerned with a detailed discussion of the phosphosulfide electrolyte types that have been under investigation already for a long time, the Li–P–S and the LiSICon. There is a multiplicity of different compositions within each of these types. The idea behind the outline of these sections is to point out the relations and differences between the different materials with respect to their chemistry related to the phase diagrams. Patterns for the relations among the materials identified in the phase diagrams are the base for a discussion of structure, processing and Li-ion conductivity within separate sections for each type and resulting in intra-type comparisons. The follow up part II will continue with a treatment of the more recently developed LGPS and Argyrodite-type electrolytes tracking the same concept, before addressing an inter-type comparison of ambient temperature Li-ion conductivities and the electrochemical stability of the electrolytes vs. metallic lithium. A final section in part II summarizes conclusions and provides perspectives for future research on Li-ion conductive phosphosulfide electrolytes.

Authors 13

1. Xin Lu corresponding Aachen Institut für Materialien und Prozesse für elektrochemische Energiespeicher– und wandler

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

   Institut für Materialien und Prozesse für elektrochemische Energiespeicher-und wandler, RWTH Aachen University, D-52074 Aachen, Germany

2. Chih‐Long Tsai

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

3. Shicheng Yu

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

4. Hongying He

   Nanyang Technological University

   Affiliation as printed

   School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore

5. Osmane Camara

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

6. Hermann Tempel

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

7. Zigeng Liu

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

8. Anna Windmüuller

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

9. Evgeny V. Alekseev

   Forschungszentrum Jülich

   Affiliation as printed

   Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

10. Shibabrata Basak

    Forschungszentrum Jülich · Ernst Ruska Centre

    Affiliation as printed

    Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institut, Forschungszentrum Jülich, D-52425 Jülich, Germany

    Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

11. Li Lü

    National University of Singapore

    Affiliation as printed

    Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore

12. Rüdiger‐A. Eichel Aachen Institut für Materialien und Prozesse für elektrochemische Energiespeicher– und wandler

    Forschungszentrum Jülich · RWTH Aachen University

    Affiliation as printed

    Institut für Energie-und Klimaforschung (IEK-9: Grundlagen der Elektrochemie), Forschungszentrum Jülich, D-52425 Jülich, Germany

    Institut für Materialien und Prozesse für elektrochemische Energiespeicher-und wandler, RWTH Aachen University, D-52074 Aachen, Germany

13. Hans Kungl

    Forschungszentrum Jülich · Helmholtz-Institute Münster

    Affiliation as printed

    Institut für Energie-und Klimaforschung (IEK-12: Helmholtz-Institute Münster, Ionics in Energy Storage), Forschungszentrum Jülich, D-48149 Münster, Germany