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  • Analytical detection of soluble polysulphides in Li-S battery [Elektronski vir]
    Dominko, Robert ...
    The rechargeable Li-S batteries posses more advantages over the conventional lithium ion batteries with having high energy density and being cost effective. The practical use is faced with two major ... problems: (i) a low intrinsic conductivity of sulphur and polysulphides and (ii) loss of active material due to solubility of the higher order polysulphides. Generally, low intrinsic conductivity can be overcome by maintaining the active material in an intimate contact with an electron conductive matrix. The formation of soluble polysulphides was attempted to be controlled by introducing different solvents and additives or using polymer type of electrolyte. In order to control the formation of soluble polysulphides, it is important to find a suitable electrochemical environment for the Li-S batteries. To understand theimpact of electrochemical environment (different solvents, salts, additives, compositions, ...) on the formation of soluble polysulphides we develop several different in-situ analytical tools, which are used as a basic characterisation tools in our studies. Here we report on the applicability of a modified multi electrode Swagelok cell which enables in-situ detection of soluble polysulphides in the electrolyte during Li-S battery operation [1]. For instance, in the normalized conditions (amount of electrolyte, geometry, electrochemical conditions,.), quantitative differences between different solvents, composites, salts can be observed.
    Vir: E-MRS ICAM IUMRS 2011 spring meeting, May 9-13, 2011, Nice, France [Elektronski vir]
    Vrsta gradiva - prispevek na konferenci
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 4675354

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