Lithium-ion polymer battery technology has been mature and commercialized in the world for more than two years, although sales are growing rapidly, but its market share is still less than 10%, compared with the 90% market share of liquid lithium-ion battery, far less than people's expectations.Currently, the price of polymers in the market is generally higher than that of liquid lithium for various reasons. However, as the competitive model of mobile appliances is quietly changing, especially the design value innovation that polymer batteries bring to mobile appliances (e.g., superior performance under 4mm thickness, large size batteries),Polymer batteries are being recognized by more and more designers of mobile phones, mobile DVDs and the like, so polymer manufacturers remain confident that their time will come.The development trend of polymer lithium-ion batteries can be seen from the development of mobile phones.At present, mobile phones have the following development trends:

    (1) Mobile phones themselves are developing in the direction of miniaturization and ultra-thin, so as to facilitate the carrying of consumers;

    (2) The individualization of mobile phone design is reflected in the fact that the design concept is no longer the original square shape. The design of irregular shape, curve and cambered surface has become the mainstream of the aesthetics of mobile phone design;

    (3) The increasing use of color screens and mobile phone functions.One of the most effective ways to make mobile phones smaller is to make batteries thinner and smaller.Batteries of less than 4mm thickness have become the mainstream trend of thin mobile phone configuration. From the point of cost-effective, this is the specialty of polymer.An irregularly shaped, curved, or cambered cell phone creates an irregularly shaped efficient space for the battery.Liquid rectangular forms do not make efficient use of space and have a low volume, while stacked polymers make the most of this irregular space and enlarge the volume.Recently, the arc-shaped, trapezoidal and backpack batteries introduced by TCL can increase the capacity of mobile phones by more than 50% compared to the corresponding liquid batteries.As mobile phones have more and more functions, they consume more and more power.A corresponding increase in battery capacity is required.Polymerized cells have obvious advantages without increasing the thickness of the battery.Similarly, laptop, Bluetooth headset, PHS mobile phone, mobile DVD and other electrical appliances are in the direction of mobile, portable development, are equipped with the liquid crystal display, and the function is increasing, the liquid crystal screen is increasing.All of these provide unlimited business opportunities for polymer lithium-ion batteries.