4 results about "Electrochemical window" patented technology

The invention relates to a battery technology, in particular to a solid sodium battery electrolyte and a preparation and an application thereof. The electrolyte is a carbonic ester polymer, a sodium salt and a porous support material, wherein the thickness of the electrolyte is 20-600 microns; the ionic conductivity is 1*10<-5>S/cm to 1*10<-3>S/cm; and an electrochemical window is greater than 3.6V. The preparation comprises the following steps: dissolving the carbonic ester polymer and the sodium salt into a solvent at a certain ratio; preparing a film on the porous support material; and carrying out vacuum drying to obtain the solid sodium battery electrolyte material. The assembled solid sodium battery is good in rate capability and has excellent long-cycle stability; and no electrolyte is added, so that the safety is high. The main body material is the carbonic ester polymer, so that the price is low; and the cost is low. The solid sodium battery electrolyte material is simple to prepare.

According to one embodiment of the present disclosure, a redox flow battery is provided comprising an ionically conductive separator, a working side flowing electrolyte, a working electrode in ionic contact with the working side of the ionically conductive separator and the working side flowing electrolyte, a counter electrode, and an auxiliary electrode peripherally circumscribed by the working electrode in a common layer of the flow battery. The auxiliary electrode is in ionic contact with the working electrode, an electrically insulating peripheral gap separates the auxiliary electrode from the working electrode. A working electrode terminal is conductively coupled to the working electrode, an auxiliary electrode terminal is conductively coupled to the auxiliary electrode, and a counter electrode terminal is conductively coupled to the counter electrode. An auxiliary power source is configured to establish an auxiliary circuit voltage differential between the counter electrode terminal and the auxiliary electrode terminal, control an auxiliary electrode voltage such that the auxiliary electrode voltage is within an electrochemical window of the working side flowing electrolyte, and establish a voltage differential between the working electrode terminal and the auxiliary electrode terminal. A method of operation of the redox flow battery is further provided

The invention discloses a plastic fuel cell system, and belongs to the technical field of fuel cell materials. Plastic is compounded with a carbon-based electrocatalyst and a conductive agent to form a composite material negative electrode, and the composite material negative electrode is directly applied to a fuel cell system. In the liquid electrolyte with a stable electrochemical window, the carbon-based catalyst is used for reducing the electrochemical oxidation reaction energy barrier of the plastic, the complete oxidation process of the plastic is realized, and stable voltage and current output is obtained. The method is easy and convenient to operate and suitable for various plastic materials, wide prospects are provided for recycling of waste plastic products, and a new way is provided for obtaining novel clean energy.