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What are the advantages and disadvantages of polymer lithium batteries?

1, single cell operating voltage up to 3,6v ~ 3,8v much higher than the nickel-hydrogen and nickel-cadmium battery 1,2V voltage.
2, the capacity density, the capacity density is nickel-metal hydride batteries or nickel-cadmium batteries 1,5 ~ 2,5 times, or higher.
3, self-discharge is small, after a long time in the capacity loss is also very small.
4, long life, the normal use of its cycle life can reach more than 500 times.
5, no memory effect, before the charge does not have to empty the remaining power, easy to use.
6, good safety performance
Polymer lithium battery in the structure of the use of aluminum-plastic flexible packaging, different from the liquid cell metal shell, in the event of security risks, the liquid cell is easy to explode, and polymer batteries will only drum up.
7, the thickness of small, can do thinner
Ultra-thin, the battery can be assembled into the credit card. Ordinary liquid lithium using the first custom shell, after the plug positive and negative material method, the thickness of 3,6 mm below the technical bottlenecks, polymer batteries do not exist this problem, the thickness can be 1mm below, in line with the current needs of mobile phones direction.
8, light weight
Batteries using polymer electrolytes do not require metal shells as protective outer packaging. The polymer battery weighs 40% lighter than that of the same capacity steel case, which is 20% lighter than the aluminum case battery.
9, large capacity
Polymer batteries than the same size specifications of the steel shell battery capacity of 10 to 15% higher than the aluminum shell battery 5 to 10%, a color mobile phone and MMS mobile phone of choice, now on the market out of the new color and MMS phone are mostly used Polymer batteries.
10, small internal resistance
Polymer cell internal resistance than the general liquid cell is small, the current domestic polymer batteries can even do the internal resistance of 35mΩ or less, greatly reducing the battery's self-power, to extend the phone's standby time, can be achieved With the international level of convergence. This support for large discharge current polymer lithium is the ideal choice for remote control model, as the most promising alternative to nickel-metal hydride batteries products.
11, the shape can be customized
Manufacturers do not have to be limited to the standard shape, can be economically made the right size. Polymer batteries can be based on customer needs to increase or decrease the thickness of the battery, the development of new batteries model, cheap, open mold cycle is short, and some can even be tailored according to the shape of the phone to take full advantage of the battery shell space, capacity.
12, good discharge characteristics
Polymeric batteries use colloidal electrolytes, compared to liquid electrolytes, colloidal electrolytes have a smooth discharge characteristics and a higher discharge platform.
13, the protection board design is simple
As a result of the use of polymer materials, batteries do not fire, do not explode, the battery itself has sufficient security, so the polymer battery protection circuit design can be considered to omit PTC and fuses, thereby saving battery costs.
1, the battery cost is high, the electrolyte system purification difficult.
2, the need to protect the line control, overcharge or over discharge will make the battery internal chemical substances have been damaged, thus seriously affecting the battery life.
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