Batteries Flashcards
1
Q
Characteristics of batteries
A
Battery: portable energy source converts chemical to electrical Charc Energy Capacity Power density Cycle life Shelf life Current Voltage
2
Q
Classification of batteries
A
Primary: non reachargable, non reversible, inexpensive
Ex dry cell
Secondary:reversible,rechargable,acts as electrochemical energy storage unit
Ex lead acid
Reserved:activated when needed
3
Q
Zn mno2
A
Anode zn Cathode graphite road Electrolyte mno2+graphite pow Nh4cl+zncl2 Uses radios transistors flash lights Potential 1.5
4
Q
Lead acid
A
Anode lead
Cathode pbo2
Electrolyte 37% h2so4
Uses medical equip,ups sys telephone exchangers
5
Q
Zinc air
A
Anode zn Cathode o2(small holes) Separated by porous membrane Electrolyte koh Potential 1.25 and 1 Uses hearing aids, tele communication
6
Q
Limno2
A
Anode li
Cathode mno2
Electrolyte lithium halide dissolved in organic solvent
Primary battery
Uses high discharge devices like wallow talkie portable televisions digital cameras
7
Q
H2o2
A
Anode h2 Cathode o2 Electrolyte koh Contains graphite electrodes (Anoxic compartment Nd cathodic compartment) Uses space vehicles military sys
8
Q
Methanol o2
A
Anodic comp ch3oh+h2so4 Cathode o2 Electrolyte h2so4 Contain platinum electrode Membrane is provided to prevent diffusion of methanol into cathode Uses military applications
