The Alkaline Dry Cell
By Serena, Lydia
Block: B
IntroductionAlkaline dry cell(alkaline battery): a type of dry cell dependent upon the reaction between zinc and manganese dioxide (Zn/MnO2).
The origination of its name: the electrolyte(KOH) is alkalineits non-fluid electrolyte
The half-reaction are:Anode: Zn(s) + 2OH−
(aq) → ZnO(s) + H2O(l) + 2e− Cathode: 2MnO2(s) + H2O(l) + 2e− →Mn2O3(s) + 2OH−
(aq)
In the earth80% of manufactured batteries in the US 46% of all primary battery sales in Japan68% of all battery sales in Switzerland60% of all battery sales in the UK 47% of all battery sales in the EU20% of all battery sales in China
Product Common battery
A rechargeable battery
Detector
Common usedtoys (robots and cars ) remoteswall clocks other light duty household itemsradiosphoto-flash applicationswatcheshigh-drain applicationscameraInterphoneRazorAlarmCalculatorHearing aids …
The best choice
for your
gadget!!!
Advantages of an Alkaline Battery Chemical
CompositionElectrolyte: a basic
KOH paste(alkaline electrolyte)
Anode : zinc powder provides greater surface area
Advantages of an Alkaline Battery
CapacityThe use of an alkaline
compound more energy.
Produce 500-700 percent more power
Advantages of an Alkaline Battery Shelf LifeNo voltage drop Ability to store for a
long period of time.10 times longer than
common dry cell.
Advantages of an Alkaline Battery Performance in
Different Environments
Ability to be used in different temperatures.
Common dry cell: 0 to 160 degrees
Alkaline Battery: as low as -20 degrees
Disadvantages of an Alkaline Battery
Cost More expensive than
common dry cell
How to recognize the carbon-zinc battery and alkaline battery in your daily life?
Appearance (more beautiful and better design)
Touch (notch on the bottom)Weight (alkaline battery 23g ; carbon-
zinc battery 15g)Sign (AR; LR)
References Life Cycle Impacts of Alkaline Batteries with a Focus on End-of-Life -
EBPA-EU Monthly battery sales statistics - MoETI - March 2011 ^ INOBAT 2008 statistics. Battery Waste Management - 2006 DEFRA EPBA statistics – 2000 http://www.powerstream.com/BatteryFAQ.html http://www.ehow.com/info_12070433_alkaline-dry-cell-vs-ordinary-dry-cell.
html http://www.ehow.com/facts_7719453_alkaline-vs-regular-battery.html http://www.ehow.com/info_8297163_difference-between-alkaline-nonalkali
ne-batteries.html http://www.odec.ca/projects/2006/glaz6j2/battery_info.htm#diagram http://www.wisegeek.com/what-is-a-dry-cell-battery.htm http://dict.battery.com.cn/detail_177.html http://en.wikipedia.org/wiki/Alkaline_battery?vm=r
Homework P232 #55
Thank you for your listening!