The concept of lithium battery is used very frequently, with a little attention, we will find that the concept of using this concept is actually a broad, narrow narrow three distinctions. The broad meaning of lithium-ion batteries include lithium-ion batteries lithium-ion batteries; because lithium-ion batteries are more widely used than lithium-ion batteries, lithium-ion batteries usually refer to lithium-ion batteries in a narrower sense; there are two categories within lithium-ion batteries: polymer lithium-ion batteries liquid lithium-ion batteries, because they are larger more liquid lithium-ion batteries, so the narrow understanding of lithium-ion batteries is that they refer to liquid lithium-ion batteries, which are commonly referred to as lithium-ion batteries. If the difference between lithium polymer batteries lithium batteries is compared in a broad narrow sense, then the concept the concept of the relationship between lithium polymer batteries are included in lithium batteries. Therefore, it is more meaningful is the narrow level of comparison: that is, polymer batteries liquid lithium-ion batteries comparison, based on this, the following lithium-ion batteries refer to liquid lithium-ion batteries.
1, the fundamental difference is the raw materials, which is the two different performance of the overall root cause. A polymer battery is the use of polymer icing materials in at least one of the three components of the positive, negative electrolyte. The polymer means a large molecular weight, its corresponding concept is small molecules, polymers have high strength, high toughness high elasticity. Currently developed polymer battery polymer materials are mainly used for positive poles electrolytes. (1) Polymer battery positive material in addition to the use of lithium batteries inorganic compounds, can also use conductive polymerpolymer;
2, in the shape, polymer battery can be thin, arbitrary area arbitrary shape, because its electrolyte can be solid can be solid liquid, lithium battery is using electrolyte, need a solid shell as a secondary packaging to accommodate electrolytes. As a result, this also allows lithium batteries to add a portion of their weight.
3, safety aspect: the current polymer is more soft-pack battery, the use of aluminum plastic film as a shell, when the internal use of organic electrolytes, even if the liquid is very hot also does explode, because aluminum plastic film polymer battery using solid plastic no leakage, but natural rupture. But nothing is certain, if the instant current is large enough to short-circuit, then the battery spontaneous combustion burst is impossible, mobile phone tablet security incidents are caused by this situation.
4, cell voltage: Because polymer batteries use polymer materials, can be made in the cell of multi-layer combination to achieve high voltage, lithium battery cell nominal capacity is 3.6V, in order to achieve high voltage in practical use, you need to series multiple cells to form an ideal high voltage working platform.
If the above several characteristics of the polymer battery lithium battery which is good, then the conclusion is certain, however, in the market lithium battery application occupies the main position, which shows that lithium battery also has a comparative advantage, we continue to compare.
5, conductivity: the polymer battery solid electrolyte ion conductivity is low, at present, mainly added some additives to make it a gel electrolyte, to improve conductivity. This simply increases the ion conductivity, which does maintain a stable value in the conductivity of lithium batteries without being affected by the quality of the auxiliary material.
6, capacity: the capacity of polymer batteries has been effectively increased, compared with the standard capacity of lithium batteries also reduced.
7, manufacturing process: the thinner the polymer battery, the better the production, lithium battery thicker the better production, which makes lithium battery in the application can expand the field more.
8, price: This is the key factor to determine the market capacity of the two, at present, the market polymer battery price is generally higher than lithium battery, which affects the market capacity of the two, the former the latter ratio is 1:9.
It is difficult to say for sure what is good polymer batteries lithium batteries, they each have a twist, if to say a conclusion, then polymer batteries in small applications more, lithium batteries in large-scale applications more promising, if polymer batteries can break through the price design limitations, perhaps represents the development trend of batteries, because of its environmental protection safety more in line with the trend.