Samsung battery refers to the electrochemical system contains lithium (including lithium metal, lithium alloy and lithium ion, lithium polymer) battery. Lithium batteries can be divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium, and can be charged. The fifth generation of rechargeable batteries Lithium metal batteries were born in 1996, its safety, specific capacity, self-discharge rate and cost performance are better than lithium-ion battery. Because of its own high-tech request constraints, now as long as a few companies in several countries in the production of such lithium metal batteries.
Samsung battery works
Lithium metal battery is usually the use of manganese dioxide as a positive material, metal lithium or its alloy metal for the negative material, the use of non-aqueous electrolyte solution of the battery.
Discharge response: Li + MnO2 = LiMnO2
Lithium Ion Battery:
Lithium-ion battery is usually the use of lithium alloy metal oxide as a positive material, graphite as a negative material, the use of non-aqueous electrolyte battery.
The response of the positive charge on the charge is
LiCoO2 == Li (1-x) CoO2 + XLi ++ Xe- (electron)
The response of the charge on the negative pole is
6C + XLi ++ Xe- = LixC6
Rechargeable battery total reaction: LiCoO2 + 6C = Li (1-x) CoO2 + LixC6
Positive information: optional cathode material many, the mainstream of multi-use lithium iron phosphate products. Not the same positive data control:
LiCoO2 3.7 V 140 mAh / g
Li2Mn2O 44.0 V 100 mAh / g
LiFePO4 3.3 V 100 mAh / g
Li2FePO4F 3.6 V 115 mAh / g
Samsung battery positive reaction: discharge lithium ion embedded, charging lithium ion de-embedded. When charging: LiFePO4 → Li1-xFePO4 + xLi + + xe-discharge: Li1-xFePO4 + xLi + + xe- → LiFePO4
Samsung battery negative information: multi-choice graphite. The new study found that titanate could be very good information. Negative reaction: lithium ion dislocation during discharge, charging lithium ion embedded. Charging: xLi + + xe- + 6C → LixC6 Discharge: LixC6 → xLi + + xe- + 6C