journal article·2021-02-12Open access

Alleviation of Dendrite Formation on Zinc Anodes via Electrolyte Additives

Xiaoxia Guo, Zhenyu Zhang, Jianwei Li, Ningjing Luo, Guo-Liang Chai, Thomas S. Miller, Feili Lai, Paul Shearing, Dan J. L. Brett, Daliang Han, Zhe Weng, Guanjie He, Ivan P. Parkin

ACS Energy Letters· Volume 6· Issue 2

Abstract

Zinc-anode-based batteries have been widely studied because of their low cost, high capacity, and high energy density. However, the formation of dendrites on the zinc anode during cycling severely affects the stability and safety of this type of battery. In this work, a series of electrolyte additives with potential to counter this problem were studied. We found that lithium chloride (LiCl) additive can suppress the growth of dendrites and stabilize the Zn metal anode, on which the cations (Li+) preferentially form Li2O/Li2CO3 upon the Zn surface and provide a shielding effect to suppress dendritic deposition, while a moderate amount of anions (Cl–) decreases the Zn polarization and facilitates ion transport. Asymmetric cells with LiCl additives in the electrolyte showed notably higher stability during the long cycling process.
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Research context

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

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

Affiliations

Department of Chemistry, University College London, Christopher Ingold Laboratory, 20 Gordon Street, London WC1H 0AJ, U.K.

Department of Chemical Engineering, University College London, Electrochemical Innovation Lab, London WC1E 7JE, U.K.

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), Fuzhou, 350002 Fujian, P.R. China

Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium

Nanoyang Group, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

School of Chemistry, University of Lincoln, Joseph Banks Laboratories, Green Lane, Lincoln LN6 7DL, U.K.

Funding

Engineering and Physical Sciences Research Council · Royal Society of Chemistry · University College London · China Scholarship Council · STFC Batteries Network

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