1, the fundamental difference is the raw material, which is the overall root of the different manifestations of the two. Polymer battery refers to at least one of the three major components of cathode, cathode or electrolyte using polymeric materials. Macromolecule means a large molecular weight, and its corresponding concept is small molecules, polymers with high strength, high toughness and high elasticity. The polymer battery polymer materials developed at present are mainly used for cathode and electrolyte.
① polymer battery cathode materials, in addition to the use of lithium batteries inorganic compounds, but also the use of conductive polymer;
②, polymer battery electrolyte has polymer electrolyte (solid or colloidal state) and organic electrolyte, lithium battery electrolyte (liquid or colloid)
2, in the plastic shape, the polymer battery can be thin shape, arbitrary area and arbitrary shape, because its electrolyte can be solid-state and not liquid, lithium batteries are used electrolyte, need a strong shell as two times packaging to accommodate electrolyte.
Therefore, this also makes the lithium battery a part of the weight.
3, Security: The current polymer is soft pack battery, using aluminum plastic film shell, when the internal use of organic electrolyte, even if the liquid is very hot does not explode, because the aluminum-plastic film polymer batteries using solid or colloidal state without leakage, but natural rupture.
But anything is not absolute, if the instantaneous current is large enough, short-circuit, then the battery spontaneous combustion or burst is not impossible, mobile phone and tablet computer security incidents caused by this situation.
4. Voltage of electric Core: As a result of polymer batteries using polymer materials, can be made in the electric core multi-layer combination to achieve high voltage, and lithium battery core nominal capacity is 3.6V, in order to achieve high voltage in practice, you need to be a number of batteries in tandem to form an ideal high voltage working platform.
If you use the above characteristics to compare polymer batteries and lithium batteries which is good, then the conclusion is certain, however, in the market or lithium battery application occupies the main position, which shows that lithium battery has a comparative advantage, we continue to compare.
5, conductivity: the polymer battery solid electrolyte ion conductivity is low, the main is to add a number of additives to make it into a gel electrolyte, in order to improve the conductivity.
This also only increases the ionic conductivity, does not like the lithium battery's conductivity to maintain a stable value, but will not be affected by the auxiliary material quality.
6, Capacity: the capacity of the polymer battery has not been effectively upgraded, compared with the standard capacity of lithium battery has been reduced.
7, manufacturing process: the thinner the polymer battery better production, lithium batteries thicker and better production, which makes lithium battery in the application can expand the field more.
8. Price: This is the key factor to determine the capacity of both markets, at present, the price of polymer batteries in the market is generally higher than the lithium battery, which affects the market capacity of both, the former and the latter ratio is 1:9.
It's hard to say for sure that polymer batteries and lithium batteries are good, they have their own advantages, if you have to say a conclusion, the polymer batteries in small applications more, and lithium batteries in large applications more promising, if the polymer battery can break the price and design limitations, may represent the battery development trend, Because of its environmental protection and safety more in line with the trend.
