Mar 27, 2019 Pageview:482
The lithium battery is a kind of battery using lithium metal or lithium alloy as anode materials, using non aqueous electrolyte solution. Lead-acid battery electrode is mainly composed of lead and its oxide, and battery electrolyte is sulfuric acid solution.
A, Lithium battery
1, the basic introduction
Lithium batteries (Lithium battery) refer to the electrochemical system containing lithium (including metal lithium, lithium metal and lithium ion, lithium polymer) batteries. Lithium battery can be roughly divided into two categories: battery and lithium metal 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 a few countries in the production of this kind of lithium battery.
2, work principle,
(1) 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.
Discharge: Li + MnO2 = LiMnO2
(2) 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)
Second, the lead-acid battery
1, the basic introduction
Has experienced nearly 150 years development course, lead-acid battery in terms of theoretical research, the species and varieties of products, product electrical performance, etc. got great progress, both in transportation, communications, electric power, military and in the field of navigation,special economies, lead-acid batteries have played an indispensable role. According to the structure and USES the difference between lead-acid batteries, battery roughly divided into four categories: (1) starting with lead-acid battery;(2) the power to use lead-acid batteries;(3) fixed valve control type sealed lead acid battery;(4) other classes, including small valve-control sealed lead-acid battery, miner's lamp with lead-acid battery, etc.
2, work principle,
Valve control lead-acid batteries are the external dc power supply on battery charging, make electrical energy into chemical energy storage. Discharge is electric energy released from the battery to drive the external devices.
When lead-acid battery charging will culminate, charging current is used to decompose the water in the electrolyte, only at this point, the oxygen battery anode, cathode produce hydrogen gas, the gas will overflow from the battery, resulting in a decrease of the electrolyte, need not add water regularly.
On the other hand, the end of the charging or overcharge conditions, charging energy is used to split water, and the oxygen produced by the anode cathode spongy lead response, make part of the cathode is in a state of underfill, inhibit the generation of negative hydrogen.
Of lithium iron batteries are a group of batteries, lithium battery in the family the anode material for lithium iron phosphate, and lithium iron batteries for short. Compared with the conventional lead-acid batteries, lithium ion battery in the working voltage, energy density, cycle life, etc., all have distinct advantage.
The page contains the contents of the machine translation.
Leave a message
We’ll get back to you soon