DataVXChemistry of MaterialsPaper
journal article·2021-07-27

Li+/Na+ Ion Exchange in Layered Na2/3(Ni0.25Mn0.75)O2: A Simple and Fast Way to Synthesize O3/O2-Type Layered Oxides

Weibo Hua, Suning Wang, Kai Wang, Alexander Missyul, Qiang Fu, Mariyam Susana Dewi Darma, Hang Li, Volodymyr Baran, Laijun Liu, Christian Kübel, Joachim R. Binder, Michael Knapp, Helmut Ehrenberg, Sylvio Indris

Chemistry of Materials· Volume 33· Issue 14
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Source abstract

Abstract

Normally, high temperatures are required for solid-state reactions to overcome energy barriers in the formation of lithium insertion materials. Consequently, conventional high-temperature lithiation reactions are very time- and energy-consuming and often accompanied by undesirable side reactions. Thus, how to synthesize Li-containing cathode materials with a desired structure under a short reaction time and low temperature is of paramount significance. Herein, layered sodium-deficient Na2/3□1/3(Ni0.25Mn0.75)O2 (□ for vacancy) oxides with different oxygen stackings (P2 or P3 structure) were deployed in lithium ion batteries. An interesting Li+/Na+ ion-exchange reaction between the electrode material and LiPF6-based carbonate electrolyte was observed at room temperature for the first time. Such a reaction can produce the layered Li2/3□1/3(Ni0.25Mn0.75)O2 compounds having the O2 or O3 structure, which show the ability to reversibly accommodate lithium ions over a relatively wide voltage range. Our experiments may open up a pathway toward the development of novel electrode materials.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Layered Double Hydroxides Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen D-76344, Germany

School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China

College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China

Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen 76344, Germany

CELLS-ALBA Synchrotron, Cerdanyola del Valles, Barcelona E-08290, Spain

Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, Hamburg 22607, Germany

Funding

Guilin University of Technology · Ministry of Education of the People's Republic of China · Natural Science Foundation of Guangxi Province · Guangxi University of Technology · Foundation of Key Laboratory of New Processing Technology for Nonferrous Metal & Materials · Xi'an Jiaotong University

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