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China energy storage net news: with the development of wearable electronic devices, the battery has been affecting wearable devices, smart phones, intelligent hardware such as consumer electronics key bottlenecks, the performance of the flexible slim printing thin-film batteries has been a focus of research scientists.
A new study from the university of Manchester shows that simple screen printing can be used to print flexible cells directly onto textiles.The researchers used conductive graphene ink to print a solid-state flexible supercapacitor onto a cotton fabric.The study, published in the recent issue of 2D materials, shows that the printed electrode exhibits excellent mechanical stability due to the strong interaction between the ink and the substrate.
Researchers, flexible textile battery based on the low cost of graphene materials, external use simple screen printing technology, electrode will be because of the strong interaction between ink and textile performance is very stable, and has good operating security and long cycle life, also support the quick charge battery itself, flexible material to allow water to wash.
The further development of supercapacitors for graphene oxide hopes to transform the huge potential of wearable technology into reality.High performance monitoring function of the sportswear, embedded health monitoring equipment, lightweight military equipment, new mobile communication equipment, and even wearable computers, these are printed graphene supercapacitor after further research and development potential of some application direction.
As these new wearable devices of power supply, in addition to have a high energy and power density, good safety operation, long cycle life and low cost, but also have reasonable mechanical flexible.
The paper's co-author, Britain's national institute of graphene researchers NazmulKarim said: "based on extensible graphene based flexible textile printing technology development of the super capacitor is to realize the multifunction of the next generation is an important step in the wearable electronic textile.It will open up the possibility of monitoring human activity and physiology while storing energy, as well as environmentally friendly and cost-efficient smart electronic textiles.
Oxidized graphene is graphene oxide, it is the product of the graphite powder after the chemical oxidation and stripping, graphene oxide can be treated as a kind of alternative forms of soft material, have, colloid and polymer thin film, as well as the characteristics of the amphoteric molecules.Graphene oxide can now be prepared as a solution at a lower cost.The solution can be applied to textiles to create supercapacitors that are part of the fabric itself.
"Wearable devices are roughly divided into three technical blocks - flexible displays, flexible circuits and deformable batteries.The technical difficulty of these three parts is increasing gradually.Safe, flexible, wearable batteries are a bottleneck in the industry.Executive director of Beijing institute of graphene Wei Di tells a reporter, "wearable battery technology requirements of the device mainly include flexible, can combine with stretchability, textiles, light weight, low power consumption, material durability and persistence, biological compatibility, the comfort of skin contact, and match the energy system."
In the industry, the future development direction of energy demand is wearable, and the development of graphene in the market of wearable electronic devices is huge.The excellent physical and mechanical properties of graphene, high heat dissipation and high conductivity make it a good vehicle for wearable energy devices, wei said.