Journal Article10.1149/1.2969424
Effect of Electrolyte Composition on Lithium Dendrite Growth
Owen Crowther,Alan C. West +1 more
284
TL;DR: In this paper, a microfluidic test cell was used to detect dendrite growth at different current densities for electrolytes containing lithium hexafluorophosphate or lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in mixtures of propylene carbonate (PC) and dimethyl carbonate.
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Abstract: Lithium deposition is observed in situ using a microfluidic test cell. The microfluidic device rapidly sets up a steady concentration gradient and minimizes ohmic potential loss, minimizes electrolyte usage, and shows good repeatability. Dendrite growth is observed at different current densities for electrolytes containing lithium hexafluorophosphate or lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in mixtures of propylene carbonate (PC) and dimethyl carbonate. Dendrites are formed at shorter times in electrolytes containing LiTFSI and high amounts of PC. The time to first observed dendrites increases linearly (for all electrolyte compositions) with a resistance given by the Tafel slope of the lithium reduction polarization curve.
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Improving Energy Storage Properties of Magnesium Ion Battery: Regulating MnO2/Ti3C2 Crystal Structure
TL;DR: In this article , the effects of different crystal structures of MnO2 on the microstructure and electrochemical properties of the MnO 2/Ti3C2 composites with different proportions were studied, and it was shown that the α-MnO2 is uniformly distributed in the composite, providing more transmission paths for magnesium ions.
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