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Flexible electronics in mobile environments such as those encountered in wearable devices also require energy sources. Ideally the energy source, typically batteries and supercapacitors, should also be flexible and have the same form factor as the electronic system. This has given rise to a new paradigm of flexible energy storage devices.
In this study, we have proposed an ingestible sensor platform utilizing gastric acid battery for daily healthcare. This platform has a fundamental application to precisely measure core body temperature as one of the most useful vital signs for health check. It also has the expandability to add various biosensors such as pH, pressure sensors etc‥ The architecture without a conventional battery is essential...
High energy density secondary batteries are key devices and becoming more important for mobile applications such as electric vehicles, drones and robots. In this paper, investigations of new materials and device concepts are reported on the all solid state lithium ion secondary batteries and their wide applications to mobile technologies are discussed.
This paper reports an on-chip micro battery and a micro electrochromic display, both are key components of a disposable wireless bio-sensor. The on-chip micro battery had a simple structure and it could generate open circuit voltage and power density as high as 1.6 V and 78 µW/mm2, respectively. The micro electrochromic display made of micro patterned polyaniline could be made on an imitation of CMOS...
While increasing needs for wearable health care devices, an aqueous flexible organic battery consisted of quinone based organic molecules was developed. In spite of their high safety due to employing proton conducting aqueous membrane and organic molecular electrodes, high energy density and high power were achieved. By multiplying single cells, the operating voltage of 3.6 V of a blue LED was realized...
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