DataVXACS Energy LettersPaper
journal article·2024-10-11Open access

Stabilizing Graphite Anode in Electrolytes with Nanoscale Anion Networking for High-Rate Lithium Storage

Yikang Yu, Jiayi Xu, Kaining Duanmu, Vaithiyalingam Shutthanandan, Sungun Wi, Zhenzhen Yang, Yuzi Liu, Xingyi Lyu, Kun Qian, Mangilal Agarwal, Zhengcheng Zhang, Yugang Zhang, Tao Li, Cong Liu, Vijayakumar Murugesan, Jian Xie

ACS Energy Letters· Volume 9· Issue 10
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Source abstract

Abstract

Graphite is the preferred anode material in commercial lithium-ion batteries (LIBs), but its limited compatibility with various organic molecules restricts the electrolyte solvent options. The primary challenge is solvent co-intercalation with Li ions, leading to graphite layer exfoliation. As a result, electrolyte selection often relies on ethylene carbonate (EC)-based solvents. In this study, we introduce electrolytes featuring a nanoscale anion network ordering that hinders the liquid-phase exfoliation of graphite. This network, formed from concentrated long-chain lithium salts, traps free dioxolane (DOL) molecules, reducing the interactions between graphite particles and solvents during Li intercalation. Our findings reveal a mechanism that stabilizes graphite in otherwise unstable solvents with concentrated salts like LiTFSI, providing key insights for improving LIB performance by addressing electrolyte limitations on graphite anodes.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

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

Affiliations

School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, United States

Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States

Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States

Department of Chemistry and Biochemistry, Northern Illinois University, Dekalb, Illinois 60115, United States

Department of Biomedical Engineering, Indiana University Indianapolis, Indianapolis, Indiana 46202, United States

Integrated Nanosystems Development Institute, Indiana University Indianapolis, Indianapolis, Indiana 46202, United States

Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States

X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States

Funding

Division of Chemical, Bioengineering, Environmental, and Transport Systems

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