K+ Reduces Lithium Dendrite Growth by Forming a Thin, Less-Resistive Solid Electrolyte Interphase
| Autor: | Hugo Celio, Rodrigo Rodriguez, Sean M. Wood, Andrei Dolocan, Sindhu S. Nathan, C. Buddie Mullins, Kyle C. Klavetter, Codey H. Pham, J. Pedro de Souza, Adam Heller |
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| Rok vydání: | 2016 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Inorganic chemistry Nucleation Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Fuel Technology Depletion region chemistry Chemical engineering Chemistry (miscellaneous) Materials Chemistry Interphase Dimethyl carbonate 0210 nano-technology Current density Layer (electronics) Ethylene carbonate |
| Zdroj: | ACS Energy Letters. 1:414-419 |
| ISSN: | 2380-8195 |
| Popis: | Adding 10 mM KPF6 to the 1 M LiPF6 in ethylene carbonate/dimethyl carbonate electrolyte of symmetrical Li | Li cells eliminated the growth of dendrites at 0.5 mA cm–2 current density and massively reduced, but did not eliminate, the growth of dendrites at 2.5 mA cm–2. The added KPF6 increased the fraction of inorganic salts in the solid electrolyte interface, making it thinner and more Li+ conductive. It overcame the growth of dendrites resulting from inadequate nucleation density but not dendrite growth into the depletion layer, which scales with the layer’s thickness, i.e., the current density. |
| Databáze: | OpenAIRE |
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