Sealed Zinc-nickel Battery Industry On Key Issues

The history of chemical power sources and the Zn-Ni battery was reviewed in this paper, focusing on the characteristics, development, future market prospects, the problems existed and the way to solve those problems of the rechargeable Zn-Ni battery. Effects of the zinc anode additives and electrolyte inorganic additives on electrochemical performance and cycle life of Ni/Zn battery were studied by charge-discharge test.The particle morphology of the surface of zinc oxide coating indium oxide and silica was tested by TEM,the zinc oxide surface coating material for indium oxide and silicon dioxide was confirmed by XRD analysis,the e -lectrochemical properties of zinc oxide after coating was studied by polarization curve and charge-discharge tests.The bind of zinc anode have been studied through the prepation process of zinc anode and charge-discharge tests,the composition of the electrolyte and electrolyte concentration on the cycle and self-discharge performance have been examined,also assembly ratio,piece size, collection of fluid and the shell on the nickel-zinc battery performance.Different zinc anode additive have shown that adding sodium tripolyphosphate + perfluorinated surfactants, sodium tripolyphosphate + sodium dodecylbenzene sulfonate, sodium tripolyphosphate + perfluorinated surfactants increased zinc anode discharge performance. perfluorinated surfactants and sodium dodecylbenzene sulfonate have behaved a better charge-discharge performance.Different inorganic additives in electrolyte have shown that adding the proper amount of sodium sulfite,sodium tetraborate and disodium hydrogen phosphate to the electrolyte can effectively improve the battery charge and discharge performance and the battery capacity retention.adding the proper amount of disodium hydrogen phosphate and sodium sulfite inhibits zinc corrosion,reduces the deformation of zinc anode and slowed the passivation of zinc anode.Zinc oxide coated indium oxide or silicon dioxide were prepared by chemical deposition.The surface coating indium oxide or silicon dioxide was confirmed by XRD.TEM images show the changes for the morphology of the sample. Polarization curves and charge-discharge tests show that the zinc oxide coated has good corrosion resistance and electrochemical performance.The studies on the adhesive of zinc anode have found that using 0.4% hydroxypropyl methyl cellulose (HPMC) and 1.5% of the styrene-butadiene rubber (SBR) has a longer cycle life and better storage performance for Zn-Ni battery.The experiments about the electrolyte composition show that the use of KOH,NaOH,LiOH electrolyte improved charge-discharge efficiency, extended cycle life,improved charge to maintain capacity,but increased resistance of nickel-zinc battery.The concentration of electrolyte experiments showed that the concentration of 7mol/L of electrolyte behaves smaller charge polarization ,more efficient discharge and better cycle life.This experiment on nickel-zinc battery technology was studied preliminary.Results shows that 88 percent of the assembly can reduce charging polarization and resistance.The same width size of positive and negative piece increased utilization of active material,extended cycle life which ac hieved 328 times when the final capacity faded to the initial capacity of 80 percent.Welding copper at the rear of copper net and plating copper on steel shell can improve the rate of keeping charge , plating copper on steel shell has better effect, discharge capacity can reach 311.306 mAh,self-dis charge rate reduced to 22.17 percent when a battery designed for 400mAh under 50℃stored for 7 days.