How to determine alkaline battery and lead acid batteries?

Lead-acid storage The battery

Electrode is mainly composed of lead and its oxide, the electrolyte is a battery of the sulfuric acid solution.

Charged state, the positive main ingredients for lead dioxide, lead anode for; Discharge state, the main components are all lead sulfate is negative.

The electrode reaction is:

Charging: 2 + 2 h2o = pbso4 PbO2 + Pb + 2 - h2so4

Discharge: pbso4 - h2so4 PbO2 + Pb + 2 = 2 + 2 h2o

Alkaline batteries

Principle of basic ditto mainly is to use different electrolyte.

Acid with sulfuric acid, after long time use more material for the outer package material corrosion and leaking out. Now has been eliminated.

The use of alkaline potassium hydroxide. Can form a galvanic cell and manganese dioxide.

Lead-acid battery

Electrode is mainly composed of lead and its oxide, the electrolyte is a battery of the sulfuric acid solution.

Charged state, the positive main ingredients for lead dioxide, lead anode for; Discharge state, the main components are all lead sulfate is negative.

The electrode reaction is:

Charging: 2 + 2 h2o = pbso4 PbO2 + Pb + 2 - h2so4

Discharge: pbso4 - h2so4 PbO2 + Pb + 2 = 2 + 2 h2o

Alkaline batteries

Principle of basic ditto mainly is to use different electrolyte.

Acid with sulfuric acid, after long time use more material for the outer package material corrosion and leaking out. Now has been eliminated.

The use of alkaline potassium hydroxide. Can form a galvanic cell and manganese dioxide.

Lithium ion batteries Lead-acid battery

1. The rechargeable battery (alkaline battery, lead acid battery)

2. The circulation service life (1200-2000-500-900)

3. The specific energy (w. h/kg 150-40 w. h/kg)

4. The charging time (2 ~ 4 h - quick charge 3 ~ 6 h (fast charging technology has yet to mature) slow filling in more than 8 h)

5. Charge and discharge energy efficiency (lithium ion battery charging and discharging power conversion efficiency can be greater than 97%, lead-acid battery charge and discharge electricity energy conversion efficiency is about 80% or so)

6. Price (24 v / 10 ah high price: 750 ~ 1200 Yuan - 24 v / 12 ah low price: RMB 200 ~ 300)

7. Volume (the volume of a small volume of lithium ion battery is two-thirds the size of lead-acid battery, large volume)

8. Weight (light weight only 1/3 to 1/4 - weight of the lead-acid battery weight)

9. Range (power, environmental protection)

10. No pollution in the production and use of (there is pollution in production - there are a lot of lead in lead-acid battery, if mishandled, after waste will produce pollution to the environment).

11. Lithium ion battery (charging, on the basis of constant flow constant pressure The lithium battery Vulnerable to overcharge, deep discharge and short circuit damage)

12. The charging and maintenance (complex, high maintenance cost, simple, low maintenance costs provided by the open circuit)

13. Power supply (provided by small power supply, open series -- provides more open circuit of power supply)

"Lithium electricity Pool ", is a kind of lithium metal or lithium alloy anode materials, the use of water battery electrolyte solution. Lithium battery as early as 1912 by GilbertN. Lewis is put forward in this study. In the 1970 s, M.S.W hitting ham 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.

Performance does have the difference, alkaline batteries on life, maintain superior than acid batteries on a lot of, general alkaline battery room almost do not need to be manned, if in lead-acid battery rooms must be sent unattended, maintenance of instruments of battery to prepare for. The most direct, lead-acid batteries would produce acid mist, corrosion, alkaline batteries will not; Lead-acid batteries need rehydration, check the sulfide, alkaline batteries will not; The same energy density of batteries, lead-acid battery volume weight are much larger than the alkaline battery, alkaline battery is the only bad single low power saving, achieve the same number of battery voltage than lead-acid batteries, and the price is higher than lead acid battery. Actually now because of all the places you see using alkaline battery lifespan, maintenance is simple to use alkaline batteries, most places are lead-acid batteries.

Battery: positive plate is lead dioxide board, negative plate is lead plate, through mutual insert structure, a layer of positive plate is the arrangement of a layer of negative plate, plate gap between the two, which filled with dilute sulfuric acid as electrolyte, to all of the positive plate connected to the anode, cathode all the negative plate connected with the other general is 6 v and 12 v battery specifications, generally a lead-acid accumulator cell voltage is 2 v, 6 v and 12 v is actually three and six cells in series.

Lithium battery: positive plate is ductile, carbon anode is lithium ionic compounds, there are two, lithium cobalt oxide and lithium iron phosphate, structure roughly two kinds, one kind is coiling, is a kind of fold type, at present mainly coiling, is a layer of a layer of negative, positive plate insulation permeable ion diaphragm between them, and then roll together, into the encapsulation shell or bag; Fold type is the same shape of a layer of the anode layer, a layer of the diaphragm, a layer of the diaphragm such order stacked in the packaging. The lithium battery voltage is 3.6 V and 3.7 V.

Dry cell: the shell is zinc shell as the cathode, zinc shell inner wall with a layer of insulation through ion in the paper, and then fill the manganese dioxide, ammonium chloride and starch mixed paste, intermediate graphite conductive rods, then top with asphalt encapsulated, conductive rods buckle metal cap at the top lead to the anode. Dry cell's voltage is 1.5 V.

Dry cell is a kind of voltaic cell, using some kind of absorber, such as wood chips or gelatin) make inclusions not paste spillover. The power of the commonly used as a flashlight, lighting, radio, etc. Dry cell technology in China after years of development, its specific energy, cycle life, high and low temperature adaptability problems such as there has been a breakthrough.

Think tank research center of research data shows that at present our country is gradually narrowing the gap with international advanced technology, in part of the core technology has reached the international level, and increasingly into the international market.

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