摘要:
A lead-acid battery activator characterized in that alkali polyacrylate solid particles are dispersed in the sulfuric acid aqueous solution, which is intended to extend the battery life by preventing the sulfation of negative electrode, and a lead-acid battery using said activator.
摘要:
An additive for lead-acid battery including sulfonated polyacrylic acid aimed at extending the battery life by preventing the sulfation of the negative electrode, and a lead-acid battery using the additive.
摘要:
A homogeneous mass of particulate manganese dioxide which has been heat-treated to reduce its moisture content and treated with an organic solvent which substantially fills the pores of the manganese dioxide thereby reducing its affinity for absorbing moisture when exposed to a moisture environment for a fixed time period. The invention also relates to a process for producing the manganese dioxide.
摘要:
The disclosure of this application is directed to silver catalyzed manganese dioxide which is useful as a hydrogen gas absorber. The silver catalyzed manganese dioxide of this invention can be formed into a shaped article of desired configuration, inserted into an electrochemical cell such as a battery, which is subsequently sealed, to absorb hydrogen gas evolved within the cell. Absorption of hydrogen gas by the silver catalyzed manganese dioxide prevents excessive build-up of gas pressure within the sealed cell thus minimizing the possibility of rupture and complete failure of the cell.
摘要:
Coherent manganese dioxide electrodes comprising particulate manganese dioxide and particulate electrically conductive material substantially uniformly dispersed in a conductive binder wherein said binder comprises colloidal electrically conductive material having a surface area as defined by the B.E.T. method using N.sub.2 absorption at 78.degree.K of less than about 100m.sup.2 /g, and an electrolyte-wettable polymeric binder.
摘要:
An additive for lead-acid battery including sulfonated polyacrylic acid aimed at extending the battery life by preventing the sulfation of the negative electrode, and a lead-acid battery using the additive.
摘要:
A method of producing electrolytic manganese dioxide by electrolyzing an electrolyte containing sulfonated carbon particles preferably in an amount of 0.1 to 1.0 gram per liter of the electrolyte.
摘要:
Primary electric current-producing dry cell comprising a zinc anode, a cathode composed of a polycarbonfluoride compound (CF.sub.x).sub.n and an aqueous alkaline electrolyte.
摘要:
Buildup of unreacted hydrogen gas in sealed electrochemical cells has been prevented by inserting a hydrogen absorbing device into the cell before sealing. This hydrogen absorbing device is preferably a discrete shaped body, e.g., cylindrical or ring shaped, encased in an electrolyte impermeable, but hydrogen gas permeable membrane and includes a material which will react chemically with hydrogen gas, a catalyst for the hydrogen consuming reaction, and a compatible binder which maintains the reactant and catalyst in the form of a discrete shaped body which is porous to hydrogen gas.
摘要:
A timed-release acid dissoluble organic polymer pellet for use as an additive in an acid electrolyte of a lead-acid battery to prolong the life of the battery and a process of using the organic polymer pellet in a lead-acid battery.