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Lithium-ion batteries and nickel-cadmium batteries there are seven main differences:
1, construction material: carbon material for lithium-ion batteries (graphite) negative, positive electrode of lithium-containing compounds; positive electrode of nickel-cadmium batteries nickel oxide powder and graphite powder composed of active substances, negative by cadmium oxide and iron oxide powders consisting of active substances.
2, principle: the lithium-ion batteries are more equivalent to a charge container, work does not rely on chemical reactions, when the battery is charging, the generated on the cathode of lithium-ion battery, lithium ion movement after the electrolyte to the cathode. And as cathode carbon in a layered structure, it has a porous, reach the cathode, a lithium-ion is embedded into the porous carbon layer, embedded lithium ion more high charging capacity. Similarly, when you discharge the battery (that is, we use the battery), embedded in the cathode, a lithium-ion of carbon layer removal and movement back to the cathode. Back to the positive electrode of lithium-ion more higher discharge capacity. Nickel CD battery work need electric chemical reactions, charging Shi electronic along with wire to cathode, and cathode of II oxidation nickel and hydrogen oxidation sodium solution in the of water reaction formed hydrogen oxidation nickel and hydrogen oxygen root ion, power into for chemical energy; discharge Shi is located in negative of CD (Cd) and hydrogen oxidation sodium (NaOH) in the of hydrogen oxygen root ion (OH-) of synthesis hydrogen oxidation CD, and attached with in anode Shang, while also released electronic, chemical energy into for power;