Flexible Battery Power Solution for Flexible Electronics


Energy - Battery & SuperCapacitor
Hong Kong


The development of flexible electronics demands highly flexible batteries, which should possess decent energy or power density and more importantly, robust mechanical toughness. Compared with fast-innovating wearable devices, the current development of flexible batteries is relatively slow. The flexibility and endurance of batteries and the flexibility of related devices have always been the biggest bottleneck in the promotion of wearable devices. Flexible batteries can potentially solve these limitations. In an ideal integrated flexible electronic system, energy storage devices play important roles in bridging the energy harvesting and energy consumption unit. Flexible batteries must be equipped with intrinsic-level absolute safety as they may be exposed to many mechanical impacts and unexpected environmental changes. The proposed technology relates to flexible lithium-ion batteries and flexible zinc ion batteries with superior safety performances and excellent mechanical toughness, which is a perfect power solution for various flexible and wearable devices. The technology owner is seeking partners to collaborate for product co-creation.


The flexible zinc-ion batteries adopt a common planar battery configuration, with simple structure, simple assembly processes, and an energy density of 100 Wh/L. The later development will focus on further increasing the energy density to 150 Wh/L (which can be achieved by increasing the electrode active material load), and achieving high stability and flexibility. For wearable electronic devices, lithium cobalt oxide battery chemistry is used. A specially designed lamination technology is used to minimise the sacrifice of energy density to obtain good flexibility and achieve an energy density of 300 Wh/L. The advantages of the developed flexible battery are: (a) Soft and tough. The developed super-tough hydrogel electrolyte is soft and extremely resistant to damage. The flexible battery developed based on this will not be damaged under extreme deformation. (b) Absolutely safe. As a battery equipped on a human body, a flexible battery meets extreme safety. Resistant to fire, water immersion, hammering, and can be cut and bent at will. (c) Stable performance. Through effective structural design, stable energy output can still be maintained under extreme deformation conditions.


Wearable device, such as smart watches Wearable medical devices, such as body temperature stickers, ECG Smart packaging Heat generation clothing and luminous clothing Cosmetic industry, e.g. Estee Lauder once launched a facial mask with a flexible battery. The battery can release heat to heat the lotion in the mask and promote better absorption by the skin. This is a typical example of flexible batteries used in high value-added products


Flexible electronics was once rated as one of the top ten scientific and technological achievements in the world, and it is predicted that it will bring an electronic technology revolution. As consumer electronic products such as mobile phones and wearable devices gradually develop in the direction of flexibility, the market's demand for flexible batteries has gradually increased. Compared with traditional rigid batteries, flexible batteries can ensure safety and high energy density, while flexible batteries can also make electronic products more beautiful and more in line with the human body structure. They have a broad market demand. According to the data of Jinzhi Innovation, the total global output of flexible batteries in 2012 was 630,000, with a total output value of approximately US$30 million; in 2016, the total global production of flexible batteries was 1.87 million, with a total output value of approximately US$85 million. In recent years, the flexible battery industry has maintained rapid growth, with shipments expected to reach 28.3 million units in 2022, with a market size of US$950 million.
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