Lead-acid and nickel-metal hydride battery performance is low, the lithium battery is neither durable nor safe can not charge and discharge quickly, and now the supercapacitor energy density is not high enough, how to do? Shanghai Institute of Ceramics, Chinese Academy of Sciences on the 18th in the international In the top science journals, the latest inventions completed in cooperation with Peking University, etc., are invited to "join" the current materials industry's hottest superstar graphene as an electrode material for supercapacitors and to effectively design the structure for it effectively Performance - The Next Generation of High Performance Supercapacitors - "Multi-Almighty" - was born!
For example, researchers at Super Capacitor Bus, which had been operating successfully in the Expo Park, can travel 7 km in 90 seconds on one charge, while the new supercapacitor with graphene can run on 35 seconds after charging for 7 seconds Km; As for the current use of lead-acid battery battery scooter, heavy weight, full charge for several hours, if switched to a new type of supercapacitor graphene, not only greatly reduce the weight, and a charge of only 10 seconds.
Supercapacitor is an electrochemical energy storage device between the traditional capacitor and the battery, we are not strange to it: close to the bus, electronic toys, emergency lighting, smart grid, as far as power plants, tanks, Guns, laser weapons, etc., have their useless. According to international authoritative research data, in 2014 the global supercapacitor market has reached 1.1 billion US dollars, by 2018 the market size is expected to reach 3.5 billion US dollars. Ideal energy storage devices, these skills are nothing more than these: high energy density - can store a lot of electricity, high power density - can be fast charge and discharge, long life, safe and reliable, low prices. The current super capacitor, the other is not bad, except that there is a fatal flaw - low energy density, the total storage of electricity is not enough.
Huang Fuqiang, a researcher at Shanghai Silicate Institute, Professor Chen Yiwei and Dr. Lin Tianquan repeatedly conceived and experimented and finally found a strategy to break through the bottleneck: "magic material" graphene was introduced on the electrode and "tailor-made" Scientific name is "nitrogen-doped ordered mesopores," the "best shape" to solve the rapid charge and discharge with a large number of storage of electricity conflicts, the energy density suddenly increased more than 3 times; in the electrolyte, with no Poisonous, safe and environmentally friendly, inexpensive aqueous solution to replace toxic, flammable and explosive, expensive organic solution. The research group expects that the new graphene supercapacitor can be produced at a low cost and achieve large-scale production, which is expected to become the "new star" of the energy storage device industry. In the future, researchers will continue to challenge their energy density limit to try to store more energy on the supercapacitor - one day in the future, the safe supercapacitors can be used in portable devices such as cell phones, and the charging time can be "ticked" .
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