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Hole and Protonic Polarons in Perovskites

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Electric charge transport is an essential process for all electrical and electrochemical energy systems, including inanimate and animate matter. In this issue on materials for energy conversion, we compare and discuss the role of electron holes and protons as charge carriers in solids. Specifically we outline how the temperature or thermal bath affect the charge carrier concentration and mobility for some metal oxides with the perovskite structure. The frequent observation that the conductivity becomes independent of the activation energy at the isokinetic temperature, known as the Meyer-Neldel rule, is an important aspect of our interpretation of the physical mechanism of conduction by polaron hopping.
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Keywords: ELECTROCHEMISTRY; ENERGY STORAGE; HYDROGEN; MEYER-NELDEL RULE; POLARON; PROTON

Document Type: Research Article

Affiliations: 1: Empa. Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland;, Email: [email protected] 2: University of Michigan – Shanghai Jiao Tong University Joint Institute, 800 Dong Chuan Road, Shanghai, 200240, China;, Email: [email protected] 3: Département de Génie Physique, Polytechnique Montréal, CP 6079, Succursale C-V, Montréal, QC H3C 3A7, Canada, and Réseau Québecois sur des Matériaux de Pointe (RQMP);, Email: [email protected]

Publication date: November 1, 2019

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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