Radioisotope of^(230)Pa was synthesized by proton irradiation of ThO_(2) powder targets with thickness of about 2g/cm^(2).Pure^(230)Pa was extracted and deep purified from thorium and fission products by the radiochem...Radioisotope of^(230)Pa was synthesized by proton irradiation of ThO_(2) powder targets with thickness of about 2g/cm^(2).Pure^(230)Pa was extracted and deep purified from thorium and fission products by the radiochemical method.Thin^(230)Pa→^(230)U sources were prepared for measuring the cluster decay of^(230)U.Two cases of decay via heavy ion emission,which were most probably for the neon decays of^(230)U,were detected by using solid-state track registration detectors.The preliminary branching ratio relative to a-decay comes out to be(1.3±0.8)10^(-14).展开更多
Oxygen evolution reaction(OER),a half reaction involved in electrochemical water splitting,CO2 reduction,and metal–air batteries,restricts the efficiency of these energy conversion systems due to sluggish reaction ki...Oxygen evolution reaction(OER),a half reaction involved in electrochemical water splitting,CO2 reduction,and metal–air batteries,restricts the efficiency of these energy conversion systems due to sluggish reaction kinetics[1,2].To accelerate OER,highly efficient electrocatalysts are required.However,large-scale applications of the normally used OER catalysts(i.e.RuO2 and IrO2)are hampered by their instability and low abundance.It is highly desirable to develop earth-abundant catalysts with low cost,high activity and long-term stability.Co(Ni,Fe)(oxy)hydroxides(Co(Ni)-(O)OH)have emerged as promising OER catalysts in recent years[3].展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19405006the Foundation of the Chinese Academy of Sciences for the researcher returned back from abroad,and the Ninth Five-years Great Project of the Chinese Academy of Sciences。
文摘Radioisotope of^(230)Pa was synthesized by proton irradiation of ThO_(2) powder targets with thickness of about 2g/cm^(2).Pure^(230)Pa was extracted and deep purified from thorium and fission products by the radiochemical method.Thin^(230)Pa→^(230)U sources were prepared for measuring the cluster decay of^(230)U.Two cases of decay via heavy ion emission,which were most probably for the neon decays of^(230)U,were detected by using solid-state track registration detectors.The preliminary branching ratio relative to a-decay comes out to be(1.3±0.8)10^(-14).
基金financially supported by the National Natural Science Foundation of China(51521001 and 51832003)the Fundamental Research Funds for the Central Universities(WUT:2019IB002)the Students Innovation and Entrepreneurship Training Program(2019-C-B1-25)。
文摘Oxygen evolution reaction(OER),a half reaction involved in electrochemical water splitting,CO2 reduction,and metal–air batteries,restricts the efficiency of these energy conversion systems due to sluggish reaction kinetics[1,2].To accelerate OER,highly efficient electrocatalysts are required.However,large-scale applications of the normally used OER catalysts(i.e.RuO2 and IrO2)are hampered by their instability and low abundance.It is highly desirable to develop earth-abundant catalysts with low cost,high activity and long-term stability.Co(Ni,Fe)(oxy)hydroxides(Co(Ni)-(O)OH)have emerged as promising OER catalysts in recent years[3].
