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Title: Visualizaing Li Deposition in Solvate Electrolytes.


Abstract not provided.

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Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the 2016 New Mexico Regional Energy Storage and Grid Integration Workshop held August 23-24, 2016 in Albuquerque, NM.
Country of Publication:
United States

Citation Formats

Jungjohann, Katherine Leigh, Harrison, Katharine Lee, Leenheer, Andrew Jay, Hahn, Nathan, Meng, Xiangbo, Elam, Jeffery, Zhang, Ji-Guang, and Zavadil, Kevin R. Visualizaing Li Deposition in Solvate Electrolytes.. United States: N. p., 2016. Web.
Jungjohann, Katherine Leigh, Harrison, Katharine Lee, Leenheer, Andrew Jay, Hahn, Nathan, Meng, Xiangbo, Elam, Jeffery, Zhang, Ji-Guang, & Zavadil, Kevin R. Visualizaing Li Deposition in Solvate Electrolytes.. United States.
Jungjohann, Katherine Leigh, Harrison, Katharine Lee, Leenheer, Andrew Jay, Hahn, Nathan, Meng, Xiangbo, Elam, Jeffery, Zhang, Ji-Guang, and Zavadil, Kevin R. 2016. "Visualizaing Li Deposition in Solvate Electrolytes.". United States. doi:.
title = {Visualizaing Li Deposition in Solvate Electrolytes.},
author = {Jungjohann, Katherine Leigh and Harrison, Katharine Lee and Leenheer, Andrew Jay and Hahn, Nathan and Meng, Xiangbo and Elam, Jeffery and Zhang, Ji-Guang and Zavadil, Kevin R.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 8

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  • In the past decade, two aqueous zinc/halogen batteries, the zinc/chlorine, and the zinc/bromine systems, have been considered for load-leveling and vehicular applications. Even though considerable progress has been made in engineering these batteries, several problems related to the zinc electrode have yet to be solved. These are related to the growth of dendritic zinc and a maldistribution of the zinc deposit that can occur during cycling. Both problems are exacerbated by recharge of the battery after partial discharge of the zinc deposit. A survey of the literature indicates that a more desireable zinc morphology can be achieved by use ofmore » inorganic additives, fluorinated surfactants, and A-C modulation of the charging current. In this investigation, the deposition of zinc from zinc bromide and zinc chloride electrolytes was investigated under conditions that precluded dendrite growth. The techniques used were cyclic voltammetry, the potential step technique and scanning electron microscopy. The variables investigated were the substrate (zinc and dense graphite), electrolyte pH, inorganic additives (Pb/sup + +/ and Bi/sup 3 +/) and A-V modulation of the charging potential by superimposed square waves.« less
  • Thin films of an amorphous lithium-conducting electrolyte were deposited by rf magnetron sputtering of ceramic targets containing Li{sub 4}SiO{sub 4} and Li{sub 3}PO{sub 4}. The lithium content of the films was found to depend more strongly on the nature and composition of the targets than on many other sputtering parameters. For targets containing Li{sub 4}SiO{sub 4}, most of the lithium was found to segregate away from the sputtered area of the target. Codeposition using two sputter sources achieves a high lithium content in a controlled and reproducible film growth. 10 refs., 4 figs.
  • Crystal structures have been determined for both LiBF 4 and HBF 4 solvates—(acetonitrile) 2:LiBF 4, (ethylene glycol diethyl ether) 1:LiBF 4, (diethylene glycol diethyl ether)1:LiBF 4, (tetrahydrofuran) 1:LiBF4, (methyl methoxyacetate) 1:LiBF 4, (suc-cinonitrile) 1:LiBF 4, (N,N,N',N",N"-pentamethyldiethylenetriamine)1:HBF 4, (N,N,N',N'-tetramethylethylenediamine) 3/2:HBF 4 and (phenanthroline) 2:HBF 4. These, as well as other known LiBF 4 solvate structures, have been characterized by Raman vibrational spectroscopy to unambiguously assign the anion Raman band positions to specific forms of BF 4-...Li + cation coordination. In addition, complementary DFT calculations of BF 4-...Li + cation complexes have provided additional insight into the challenges associated with accurately interpretingmore » the anion interactions from experimental Raman spectra. This information provides a crucial tool for the characterization of the ionic association interactions within electrolytes.« less
  • Raman spectroscopy is a powerful method for identifying ion-ion interactions, but only if the vibrational band signature for the anion coordination modes can be accurately deciphered. The present study characterizes the PF6- anion P-F Raman symmetric stretching vibrational band for evaluating the PF6-...Li+ cation interactions within LiPF6 crystalline solvates to create a characterization tool for liquid electrolytes. To facilitate this, the crystal structures for two new solvates—(G3)1:LiPF6 and (DEC)2:LiPF6 with triglyme and diethyl carbonate, respectively—are reported. The information obtained from this analysis provides key guidance about the ionic association information which may be obtained from a Raman spectroscopic evaluation ofmore » electrolytes containing the LiPF6 salt and aprotic solvents. Of particular note is the overlap of the Raman bands for both solvent-separated ion pair (SSIP) and contact ion pair (CIP) coordination in which the PF6- anions are uncoordinated or coordinated to a single Li+ cation, respectively.« less
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