2 results about "Water-activated battery" patented technology

The invention relates to the technical field of seawater batteries, in particular to a cell structure for a rapid water-activated battery, which comprises: an electrode holder which is tubular, one end of the electrode holder is provided with an exhaust hole, and the other end of the electrode holder is provided with an auxiliary liquid inlet groove; the battery body is wound on the outer surface of the electrode holder, and an anode lead-out wire and a cathode lead-out wire of the battery body penetrate through the exhaust holes; and the positioning sheet is mounted on the electrode holder and is used for fixing the battery body on the electrode holder in the inner cavity of the shell of the water activated battery, so that the battery body is prevented from moving or being extruded in the inner cavity of the shell of the water activated battery. According to the scheme, the problems that in the activation process of a traditional seawater battery, an internal flow channel of the battery is unreasonable in design, when electrolyte (such as seawater) enters, air is compressed, the electrolyte is prevented from rapidly making contact with an electrode, and activation is slow are solved.

This invention belongs to the field of new energy materials and battery technology, specifically relating to a multi-walled carbon nanotube (MWCNT) composite cuprous chloride cathode, its preparation method, and its application. The cathode comprises a polyvinylpyrrolidone (PVP) dispersant, an aqueous polyurethane binder, and an active component containing MWCNTs and cuprous chloride. The preparation method includes three steps: preparing an aqueous MWCNT slurry, formulating a composite conductive binder, and composite active material and electrode forming. The addition of MWCNTs constructs a highly efficient electron transport network in the CuCl matrix, significantly improving conductivity and stability, and effectively solving the problem of voltage drop and premature deactivation that occurs in the later stages of discharge in pure CuCl electrodes. At the same time, the open-circuit voltage drop of the MWCNT composite cuprous chloride cathode in a freshwater environment is slower, the dissolution and corrosion rates are significantly reduced, the corrosion resistance is significantly enhanced, and the residual ratio is much higher than that of pure CuCl electrodes, which can extend the overall service life of the water-activated battery constructed with it.