 Wysłany: Sob 8:36, 01 Sty 2011 Temat postu: mbt schuhe Zinc-manganese dry battery capacity of |
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| Sodium acetate on the effects of zinc-manganese dry battery capacity
And the formation of the impact of sediment discharge capacity, if the electrolyte solution to add some acetate may play a role in stabilizing the electrolyte pH, to improve the conductivity of the electrolyte performance and battery capacity of doing this study. 2 Principle of the neutral ZnCI \a 2e-zn \+2 H2O-zn (OH) 2 +2 HJfZnO + H2O ±! Q ± = Dan ±! Zn a 2e +2 NHdCI-zn (NH3) 2CI2 '+2 H ① Cathode {2MnO2 +2 H +2 e-Mn00H ② cell reaction; Zn +2 NH. Cl +2 MnO2-2Mno0H + zn (NH3) 2CI2 + ③,, clear response to the battery resistance, the battery inside the precipitate diamino zinc chloride generated negative reaction of Zn (OH) but also reacts with alkaline chloride ZnCl Zinc: Zn (OH) + ZnCI-2zn (0H) Cl ● ④ 4Zn (OH) 2 a ZnCI2 a zncl: ・ 4Zn (OH): + ⑤ reaction ④, ⑤ and four basic zinc chloride generated alkaline chlorine all deposits of zinc can lead to the battery internal resistance increases. And because the reaction ④, ⑤ the existence of a negative reaction to accelerate the formation of H +, lowering the value of the solution of the pn,mbt schuhe, zinc anode polarization increased. The greater the cell reaction rate, pH value decreased, the more the resulting Zn (OH): The more the possibility of generating greater the four basic zinc chloride, causing the greater the degree of negative polarization of the battery capacity In addition, the greater impact, battery resistance may also generate cutting stone manganese reaction: 2MnOOHj_Znj_2OH ~ a zn0 ・ Mn2O3 + +2 HO ⑥ Obviously, manganese stone formation on the one hand consumes one OH-ion,ugg boots günstig, reducing the pH of electrolyte value, but also reduces the concentration of positive surface MnOOH. Stone is hard and dissolved manganese deposits, will increase the battery's internal resistance, direct impact on the battery discharge capacity. In short, the cell pH value during the reaction increases and the impact of sediment generation is a result of battery capacity Received date: 1993 a l2-09 ・ l2 ・ factors. If you add in the electrolyte solution as acetate buffer, pH, electrolyte stability could reduce electrode polarization and the formation of sediment and reduce the battery's internal resistance, increased battery capacity. 3 3 experimental methods and results discussed. I experiment with home-made simulation experiments battery charger made, PZ26b DC digital voltage display device, with a continuous discharge 5o resistance. 5rain record every time the battery voltage to 1.000V upon, then charge to I. 600V, repetitive firing. 3.2 Experimental results and discussion of formulation of Table 1, the experimental results shown in Table 2. From Table l, Table 2 O to the following conclusions. 3.2. I When the pH of a 5 +5 ~ 6.5, charge and discharge of the formula 3 times a zinc electrode corrosion, corrosion of zinc electrode formula l, the most serious,mbt italia, the other second. When the pH - 6.5 ~ 7.0, in addition to formula l, where the formula of acetic acid ion l0 times charge and discharge without zinc electrode corrosion, probably from the acetate ion corrosion inhibition. 3.2.2 Formula I,tory burch outlet, a 5.5 to 6.5 pH. Discharge capacity of more than 3 times the other, but adjusted to pH - 6.5 ~ 7.0 Henan Chemical J994 No. 5 shows the discharge electrode polarization after several serious resistance increases, capacity decreases. The other recipe l0 times continuous discharge of zinc anode does not corrode. Table l data of each cell solution formulations (wt) 3.2.3 we can know that formula 2 l0 times the cumulative discharge time is longer, the capacity is bigger. This may be the buffering effect of acetate ions,ugg España, so that the discharge process pH, little change in the electrolyte, reducing the electrode polarization, but also may reduce the formation of some deposits, the battery internal resistance decreases, life expectancy extended. 3.2.4 Formula 3 Formula 1 with ammonium acetate in place of ammonium chloride, and its capacity is also large compared with formula 1, but the discharge procedure for 8 times the corrosion zinc electrode discharge capacity decreases. In ammonia production, the phenomenon of cathode with flatulence. Table 2, the experimental data under different formula 4 Conclusion In summary, neutral zinc-manganese dry battery in addition to join zinc chloride, ammonium chloride, but then add an appropriate amount of acetic acid salt. Can reduce the zinc electrode polarization, reducing the battery internal resistance and improve the battery capacity of electrolyte pH value should be controlled between 6.5 to 7.0 is appropriate. More articles related to topics： ugg boots billig Molding shrinkage rate is affecte uggs boots italia Synthesis of Cr-Ca-Sn-(Si) serie moncler jackets Injection blow molding hollow cont |
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