The Shanghai Institute of Space Propulsion has made a great breakthrough in electric propulsion technology.The kilowatt-class Hall thruster hollow cathode long life test exceeded 28,000 hours with 15,000 ignition test...The Shanghai Institute of Space Propulsion has made a great breakthrough in electric propulsion technology.The kilowatt-class Hall thruster hollow cathode long life test exceeded 28,000 hours with 15,000 ignition tests.The verified lifetime has reached an advanced worldlevel.展开更多
Integrating high content carbon into the negative electrodes of advanced lead–acid batteries effectively eliminates the sulfation and improves the cycle life,but brings the problem of hydrogen evolution,which increas...Integrating high content carbon into the negative electrodes of advanced lead–acid batteries effectively eliminates the sulfation and improves the cycle life,but brings the problem of hydrogen evolution,which increases inner pressure and accelerates the water loss.In this review,the mechanism of hydrogen evolution reaction in advanced lead–acid batteries,including lead–carbon battery and ultrabattery,is briefly reviewed.The strategies on suppression hydrogen evolution via structure modifications of carbon materials and adding hydrogen evolution inhibitors are summarized as well.The review points out effective ways to inhibit hydrogen evolution and prolong the cycling life of advanced lead–acid battery,especially in high-rate partial-state-of-charge applications.展开更多
文摘The Shanghai Institute of Space Propulsion has made a great breakthrough in electric propulsion technology.The kilowatt-class Hall thruster hollow cathode long life test exceeded 28,000 hours with 15,000 ignition tests.The verified lifetime has reached an advanced worldlevel.
基金supported by the Science and Technology Program of State Grid Corporation of Chinathe National Thousand Talents Program of China
文摘Integrating high content carbon into the negative electrodes of advanced lead–acid batteries effectively eliminates the sulfation and improves the cycle life,but brings the problem of hydrogen evolution,which increases inner pressure and accelerates the water loss.In this review,the mechanism of hydrogen evolution reaction in advanced lead–acid batteries,including lead–carbon battery and ultrabattery,is briefly reviewed.The strategies on suppression hydrogen evolution via structure modifications of carbon materials and adding hydrogen evolution inhibitors are summarized as well.The review points out effective ways to inhibit hydrogen evolution and prolong the cycling life of advanced lead–acid battery,especially in high-rate partial-state-of-charge applications.
