Wearable electronic is one of the important direction of future electronic components research and development, the power supply is part of the core. Access and efficiency of power supply affect the future of wearable electronic design and function. At present, the power of the wearable electronic equipment mainly for the lithium ion battery, its inherent characteristics to some extent limits the outdoor usability of wearable electronics, security, and the human body skin nicely.
“ Water hydrogen car & throughout; After news events, science and technology journal reporter contacted wangcheng dress feather, director of the hydrogen fuel cell lab at tsinghua university, he thinks, hydrogen production from water technically there is no problem, practical is the key to cost.
wangcheng dress feather, water technology route of multiple hydrogen production: the use of fossil fuels, such as active or metal hydride and water chemical reaction; Using direct current electrochemical reaction; Or light USES special catalyst at high temperature thermal chemical and photochemical reactions in hydrogen, etc.
at present, two kinds of hydrogen production from coal gasification, natural gas reforming technology the most mature, is also a major industrial hydrogen production methods; In hydrogen production from fossil fuels to new energy hydrogen production process, electrolysis of water hydrogen production is relatively mature, though the electrolysis of water hydrogen production technology has been realized industrialization, but the scale of production capacity of only a few hundred cubic meters/hour, and the production cost is still higher than that of coal gasification, natural gas reforming hydrogen production methods.
in addition to the mature technical route, other methods of hydrogen production is still in research stage. Wangcheng dress feather explained: & other; Water directly add catalyst ( Don't consume) Hydrogen production line should be hot hydrogen chemical round robin, need to be in high temperature, such as more than 900 degrees Celsius under the condition of complete, the project on more difficult. At the same time, the photocatalytic hydrogen production also belongs to the technical route. ”
to return to this & other; Water hydrogen car & throughout; News events, wangcheng dress feather, said part of the controversial is that & other; Although technically, used car aluminum react with water to hydrogen production, through the fuel battery power to drive the car, but highlighted as an energy source, the water in the propaganda and public and the media questioned & throughout; 。
he further analysis the technical route cubic meters of hydrogen, but the cost is about 15 yuan, much higher than the cost of the above three kinds of industrial hydrogen production line. At the same time, there are still reaction controlled technology difficult, poor dynamic response and recycling of reactants, series of problems such as complex. ”
wangcheng dress feather further pointed out that innovation is the soul of social progress, especially in the current domestic industry, transformation of kinetic energy transition between the old and the new more need innovation. New product development from scientific principles to grade 9 technical maturity, is to create a practical process, very difficult, often & other; Narrow escape & throughout; , this need enterprise & other; Ten years grinding sword & throughout; Industrial ambition and strong concentration, rather than relying on hype fast against law of science for short-term commercial gain. At the same time, the public against pseudoscience courage to question, to avoid boosting the irrational spread false and false information; Media voices in follow up, be based on the scientific spirit, to understand the basic scientific principles, with professional interpretation of the right to guide public opinion.