A Structurally Flexible Halide Solid Electrolyte with High Ionic Conductivity and Air Processability

被引:10
|
作者
Karkera, Guruprakash [1 ]
Soans, Mervyn [1 ]
Akbas, Ayca [1 ]
Witter, Raiker [1 ,2 ,3 ,4 ]
Euchner, Holger [5 ]
Diemant, Thomas [1 ]
Cambaz, Musa Ali [1 ]
Meng, Zhen [1 ]
Dasari, Bosubabu [2 ]
Chandrappa, Shivaraju Guddehalli [1 ]
Menezes, Prashanth W. [6 ,7 ]
Fichtner, Maximilian [1 ,2 ]
机构
[1] Helmholtz Inst Ulm HIU Electrochem Energy Storage, Helmholtzstr 11, D-89081 Ulm, Germany
[2] Karlsruhe Inst Technol KIT, Inst Nanotechnol INT, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
[3] Ulm Univ, Inst Quantum Opt, Albert Einstein Allee 11, D-89081 Ulm, Germany
[4] Tallinn Univ Technol TalTech, Dept Cypernet, Ehitajate tee 5, EE-19086 Tallinn, Estonia
[5] Inst Phys & Theoret Chem, Morgenstelle 15, D-72076 Tubingen, Germany
[6] Helmholtz Zentrum Berlin Materialien & Energie, Mat Chem Grp Thin Film Catalysis CatLab, Albert Einstein Str 15, D-12489 Berlin, Germany
[7] Tech Univ Berlin, Dept Chem, Str 17 Juni 135 Sekr C2, D-10623 Berlin, Germany
关键词
all solid-state batteries; cesium tin chloride; chloride-ion conduction; halide solid electrolytes; ion transport in halide perovskites; solid-state Cl-35 NMR; STATE NMR; STABILITY;
D O I
10.1002/aenm.202300982
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, a structurally revivable, chloride-ion conducting solid electrolyte (SE), CsSn0.9In0.067Cl3, with a high ionic conductivity of 3.45 x 10(-4) S cm(-1) at 25 degrees C is investigated. The impedance spectroscopy, density functional theory, solid-state Cl-35 NMR, and electron paramagnetic resonance studies collectively reveal that the high Cl- ionic mobility originates in the flexibility of the structural building blocks, Sn/InCl6 octahedra. The vacancy-dominated Cl- ion diffusion encompasses co-ordinated Sn/In(Cl) site displacements that depend on the exact stoichiometry, and are accompanied by changes in the local magnetic moments. Owing to these promising properties, the suitability of the CsSn0.9In0.067Cl3, as an electrolyte is demonstrated by designing all-solid-state batteries, with different anodes and cathodes. The comparative investigation of interphases with Li, Li-In, Mg, and Ca anodes reveals different levels of reactivity and interphase formation. The CsSn0.9In0.067Cl3 demonstrates an excellent humidity tolerance (up to 50% relative humidity) in ambient air, maintaining high structural integrity without compromises in ionic conductivity, which stands in contrast to commercial halide-based lithium conductors. The discovery of a halide perovskite conductor, with air processability and structure revival ability paves the way for the development of advanced air processable SEs, for next-generation batteries.
引用
收藏
页数:17
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