Mar 26, 2019 Pageview:742
The ternary lithium battery is one of the lithium batteries. Another battery category such as Panasonic NCR18650 is cobalt acid lithium batteries.
From the point of the discharge test of some folk, ICR discharge platform significantly high, capacity is concentrated in about 4.1 ~ 3.4 V;NCR, large capacity, but low discharge platform, smooth distribution, 4.2 V to 4.2 V to 3.5 V when the remaining half.
IMR is lithium manganese acid lithium battery, it is a kind of lithium battery cathode material. Lithium battery materials can be divided into three yuan, total manganese acid lithium cobalt acid lithium, lithium iron phosphate. Manganese acid lithium capacity are relatively lower, but the power is big, is called power lithium ion batteries。
"Lithium battery", is a kind of lithium metal or lithium alloy anode materials, the use of water battery electrolyte solution. Lithium battery is as early as 1912 by GilbertN. Lewis is put forward in this study. In the 1970 s, M.S.W hittingham and began to research on lithium ion battery are put forward. Due to the lithium chemistry is very lively, making lithium metal processing, storage, use, very high demand on the environment. So, the lithium battery has not been applied for a long time. With the development of science and technology, the lithium battery has now become the mainstream.
Lithium battery can be roughly divided into two categories: lithium battery and lithium ion batteries. Lithium ion battery does not contain lithium metal state, and can be recharged. The fifth generation of rechargeable battery product lithium battery was born in 1996, its security, specific capacity, self-discharge rate and cost performance is better than that of lithium ion batteries. Because of its high technical requirements limit, now only a few countries in the production of this kind of lithium battery.
Lithium battery:
Lithium batteries are generally use lithium manganese dioxide as positive pole material, metal or its alloy metal anode materials for batteries, the use of water electrolyte solution.
The basic principle of lithium battery
The basic principle of lithium battery
Discharge: Li + MnO2 = LiMnO2
Lithium ion battery:
Lithium ion batteries are generally use lithium alloy metal oxide anode material, graphite as the cathode material, using nonaqueous electrolyte battery.
For the charge on a positive response
LiCoO2 = = Li (1 -) x CoO2 + XLi++ Xe - (electronic)
For the charge on a negative reaction
6C+XLi++Xe-=LixC6
Rechargeable batteries overall reaction: LiCoO2 + 6 c = Li CoO2 + LixC6 (1 - x)
The anode
The anode materials: many optional battery anode materials, mainstream products with lithium iron phosphate. The positive materials of the different control:
LiCoO2
3.7V
140mAh/g
Li2Mn2O4
4.0V
100mAh/g
LiFePO4
3.3V
100mAh/g
Li2FePO4F
3.6V
115mAh/g
The positive reaction: discharging lithium ion embedded, charging lithium ion embedded. Charging: LiFePO4 - Li1 - xFePO4 + xLi++ xe - discharging: Li1 - xFePO4 + xLi++ xe - > LiFePO4.
The cathode
Anode materials: use graphite more. A new study has found that titanate can be better materials.
The cathode reaction: discharging lithium ion embedded, rechargeable lithium ion embedded.
Charging: xLi++ xe - + 6 c - > LixC6
Discharge: LixC6 - xLi++ xe - + 6 c
The earliest application of lithium-ion batteries are in the cardiac pacemaker. Lithium battery self-discharge rate is extremely low, the advantages of discharge voltage flat, which makes the pacemaker implantation in the human body for a long time operation without recharging the batteries. Lithium batteries tend to have higher than the nominal voltage of 3.0 v, is more suitable for integrated circuit power supply. Manganese dioxide batteries, is widely used in calculators, digital camera, a watch.
In order to develop more excellent performance of varieties, people of various materials are studied, so as to create an unprecedented product.
Sony in 1992 successfully developed lithium-ion batteries. Its practical application, make people's mobile phone, notebook, calculator carry type electronic equipment such as less weight and volume.
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