DataVXAdvanced Energy MaterialsPaper
journal article·2020-11Open access

Enabling Natural Graphite in High‐Voltage Aqueous Graphite || Zn Metal Dual‐Ion Batteries

Ismael A. Rodríguez‐Pérez, Lu Zhang, Jens Matthies Wrogemann, Darren M. Driscoll, Maria L. Sushko, Kee Sung Han, John L. Fulton, Mark H. Engelhard, Mahalingam Balasubramanian, Vilayanur V. Viswanathan, Vijayakumar Murugesan, Xiaolin Li, David Reed, Vincent Sprenkle, Martin Winter, Tobias Placke

Advanced Energy Materials· Volume 10· Issue 41
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Source abstract

Abstract

Abstract Safety and cost are the key metrics for large‐scale energy storage. Due to the use of nonaqueous electrolytes and transition metal oxides in current lithium‐ion battery technologies, safety, cost, and environmental issues are a significant cause for concern. Graphite is a promising cathode material for dual‐ion batteries due to its high operating potential, low cost, and high safety. Nevertheless, it is challenging to find a suitable aqueous electrolyte due to the narrow electrochemical stability window (1.23 V). This work presents a graphite || zinc metal aqueous dual‐ion battery of ≈2.3–2.5 V, a remarkably high voltage in aqueous zinc batteries, achieving >80% capacity retention after 200 cycles and delivering ≈110 mAh g–1 at a charge/discharge current of 200 mA g–1. A capacity of nearly 60 mAh g–1 is achieved at a charge/discharge current of 5000 mA g–1. Natural graphite is enabled as a reversible cathode using a highly concentrated lithium‐free bisalt aqueous electrolyte.
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Research context

Energy storage

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

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

Affiliations

Energy & Environment Directorate Pacific Northwest National Laboratory Richland WA 99352 USA

State Key Laboratory of Metastable Materials Science and Technology School of Environmental and Chemical Engineering Yanshan University Qinhuangdao 066004 P. R. China

MEET Battery Research Center Institute of Physical Chemistry University of Münster Corrensstrasse 46 48149 Münster Germany

Advanced Photon Source X‐Ray Science Division Argonne National Laboratory Lemont IL 60439 USA

Joint Center for Energy Storage Research Lemont IL 60439 USA

Physical and Computational Sciences Directorate Pacific Northwest National Laboratory Richland WA 99352 USA

Environmental and Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland WA 99352 USA

Funding

Pacific Northwest National Laboratory · U.S. Department of Energy · Office of Science · Basic Energy Sciences · Division of Materials Sciences and Engineering · Biological and Environmental Research · Argonne National Laboratory

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