journal article·2022-01-14

Beyond Local Solvation Structure: Nanometric Aggregates in Battery Electrolytes and Their Effect on Electrolyte Properties

Zhou Yu, Nitash P. Balsara, Oleg Borodin, Andrew A. Gewirth, Nathan T. Hahn, Edward J. Maginn, Kristin A. Persson, Venkat Srinivasan, Michael F. Toney, Kang Xu, Kevin R. Zavadil, Larry A. Curtiss, Lei Cheng

ACS Energy Letters· Volume 7· Issue 1
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Abstract

Electrolytes are an essential component of all electrochemical storage and conversion devices, such as batteries. In the history of battery development, the complex nature of electrolytes has often been a bottleneck. Fundamental knowledge of electrolyte systems encompasses elucidation of structure–property relationships of the solution species. Recently, nanometric aggregates have been observed in several classes of electrolytes, including super-concentrated, redox-flow, multivalent, polymer, and ionic liquid-based electrolytes. Compared with the well-studied local solvation structures such as contact ion pairs and solvent-separated ions, these aggregates impose unique effects on the ion distribution and transport both within bulk electrolytes and at electrode/electrolyte interfaces. This Perspective highlights the discovery of the aggregates in various battery electrolytes and their impact on electrolyte properties. We also present an outlook for future studies of this emerging field of nanometric aggregates and the need for the development of new experimental and computational tools to study their properties.
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Research context

OpenAlex topics: Advanced Battery Materials and Technologies · Advanced battery technologies research · Advancements in Battery Materials

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

Affiliations

Joint Center for Energy Storage Research (JCESR), Argonne National Laboratory, Lemont, Illinois 60439, United States

Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States

Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

Battery Science Branch, Energy Science Division, Sensor and Electron Devices Directorate, U.S. Army Research Laboratory, Adelphi, Maryland 20783, United States

Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States

Material, Physical and Chemical Sciences Center, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States

Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States

Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States

Department of Materials Science, University of California, Berkeley, California 94720, United States

Argonne Collaborative Center for Energy Storage Science, Argonne National Laboratory, Lemont, Illinois 60439, United States

Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States

Funding

Basic Energy Sciences, Office of Science, Department of Energy

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