Исследование свойств композиционных электродных материалов на основе фторуглерода

Abstract

The influence of the composition of the composite electrode on its electrochemical characteristics is investigated. The optimal ratio between the components of the solid-phase cathode is established: (86 % CFx: Ag2V4O11): 7 % ECA : 7 % SPE. A comparative analysis of the characteristics of solid-phase electrodes based on fluorocarbon and composite compositions ones is carried out. It is shown that the composite electrode has an increase in the average discharge potential compared to a conventional fluorocarbon one of about 0.1 V, the specific energy increases by 11.2 %, and the specific capacity increases by 7.6 %. Models of current sources with polymer electrolyte have a flatter and longer discharge curve,as well as a smaller self-discharge during storage compared to models with liquid electrolyte. Thus, when stored for four months at a temperature of 90°C, the drop in the capacity of models of cells with polymer electrolyte was at the level of measurement error, while the drop in the capacity of models with liquid electrolyte was about 15 %. Tests of models of a video capsule of a video capsule endoscopy system with an energy drive from solid-phase cells and traditional lithium-fluorocarbon cells with a liquid electrolyte were carried out. It is established that solid-phase cells are superior in capacity and stability to known analogues with a liquid electrolyte.