Analysis of the difference between lithium batteries and ordinary batteries

1.Lithium ion batteries much higher than the energy, mean per unit volume (weight) contains energy than normal batteryHigh.2. Lithium ion battery high working voltage, the lithium battery normal voltage of 3.7 V, full power 4.2 V, ordinary dry-cell batteries, rechargeable battery is 1.5 V, 1.2 V, the power went out, electrical equipment, such as mobile phone, camera, MP3, etc., is must use the working voltage of 3.7 V, so the only option lithium battery.The camera batteries can also be used, but need two.3. Environmental pollution-free lithium-ion batteries.Its internal material for manganese acid lithium, or lithium cobalt, or lithium iron, the other is carbon, excluding environmental pollution of heavy metals such as mercury, nickel, cadmium.4. Development of broad prospects for lithium-ion batteries, cost-effective.Its good charge and discharge cycle performance, make it has wide application fields and prospects, cost-effective.

Lithium battery is a kind of lithium metal or lithium alloy anode materials, the use of water battery electrolyte solution.First appear in the lithium battery from the great inventor Thomas Edison, use the following response:

Li+MnO2=LiMnO2

The reaction for the REDOX reaction and discharge.

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.

But now the lithium battery has become the mainstream.A, charging the battery to charge batteries can't charge.

Second, the rechargeable battery internal resistance is small, ordinary battery internal resistance is big, so the battery doesn't fit with large current discharge equipment, such as digital cameras.

Three, rechargeable battery self-discharge is bigger, uniformity batteries, so a full battery charge need not easy light-leaking missed half) (about two month.

Fourth, rechargeable batteries don't shelf-stable, ordinary battery storage, so the rechargeable batteries without long-term performance will be sharp decline that it cannot be used.

Five, the voltage of the rechargeable battery is 1.2 V, batteries will be 1.5 V, but as a result of charging the battery internal resistance is small, so when using pressure drop, so in most cases is common to both.

So to sum up, if you want to use regular large current discharge equipment, such as digital cameras, along with the sound and so on, try to use rechargeable batteries.Small current discharge device, such as remote control, such as quartz clock, try to use batteries.

1, weight: the lithium battery light weight, lead-acid battery weight is heavier, use lithium battery cars tend to be light, use rise more convenient.

2. Price: the lithium battery price is higher, lead-acid battery price is cheap, general with capacity lithium battery price is 4 times the price of lead-acid battery, after the replacement cost is higher;

3, life: lithium battery life in theory relative to the lead-acid battery life longer (normally), but now the development of lithium-ion batteries maturity far worse than lead-acid, few enterprises mass stability of products;

4, pollution: lithium-ion batteries use pollution-free, lead-acid battery lead and acid, improper handling may damage to the environment, such as the battery directly to throw into the garbage, but like ordinary people loathe to give up!);

5, other: there are a lot of differences, such as charge characteristic, current characteristics is not very easy to ordinary consumers no longer detail;

One of the most current lithium battery important obstacle is the security problem, explosion, although at present many enterprises promote products are more stable, but a similar situation or appear constantly, including mobile killing people and the condition of the batteries, electric lithium battery capacity greater than the cell phone battery, explosive power, believe in the near future after lithium battery can solve the problem of security prices will have a large market space.

"Lithium battery", 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 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 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 unprecedented products.

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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