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Journal of the Electrochemical Society, Vol.166, No.14, A3354-A3361, 2019
Performance of Negative Lithium Titanate Electrodes Containing Minimized Amounts of Conducting Polymer and Modified Guar Gum as Binder
Negative electrodes for lithium ion batteries based on lithium titanate were prepared with minimized weight fractions of a water based binder composed of poly-3,4-ethylenedioxythiopene:polystyrene sulfonate, modified guar gum and carbon black. The electrode material was characterized in two-electrode button test cells with cyclic voltammetry, galvanostatic charge/discharge and impedance measurements. In comparison to electrodes prepared with poly(vinylidenedifluoride) as a binder superior performance in terms of specific storage capability, rate capability and stability was noticed, experimental observations, in particular changes during extended cycling, could be rationalized consistently with the applied experimental methods. (C) The Author(s) 2019. Published by ECS.