Ca3MgNi14,Nd1.5Ca1.5MgNi14,Gd1.5Ca1.5MgNi14 and Er1.5Ca1.5MgNi14 alloys were prepared by high frequency induction melting and sintering.Characterization and analysis were performed by X-ray diffraction/Rietveld full-s...Ca3MgNi14,Nd1.5Ca1.5MgNi14,Gd1.5Ca1.5MgNi14 and Er1.5Ca1.5MgNi14 alloys were prepared by high frequency induction melting and sintering.Characterization and analysis were performed by X-ray diffraction/Rietveld full-spectrum fitting,gaseous P-C-T hydrogen storage test and electrochemical properties tests.It can be found that all alloys consist of Gd2Co7-type 3R phase and Ce2Ni7-type 2H phase.Although the hydrogen storage capacities of Nd1.5Ca1.5MgNi14,Gd1.5Ca1.5MgNi14 and Er1.5Ca1.5MgNi14 decrease to some extent compared to that of Ca3MgNi14,their equilibrium pressures for absorption and desorption increase markedly.Moreover,R1.5Ca1.5MgNi14 alloys have better cycling stabilities and high-rate discharge(HRD)properties as compared to Ca3MgNi14.The hydrogen diffusion in alloy electrodes is the main factor to influence the HRD performance.展开更多
In 2005,President Xi Jinping,then Secretary of Zhejiang Provincial Party Committee,put forward the notion that“Lucid waters and lush mountains are invaluable assets.”His inspection tour to Anji County and Hangzhou X...In 2005,President Xi Jinping,then Secretary of Zhejiang Provincial Party Committee,put forward the notion that“Lucid waters and lush mountains are invaluable assets.”His inspection tour to Anji County and Hangzhou Xixi Wetland,in Zhejiang,was the birthplace of his thoughts on ecological civilization.President Xi on important occasions at home and abroad has repeatedly spoken about the harmonious coexistence between humans and nature,and China’s sustainable development.These thoughts on ecological civilization construction have been written into the Party Constitution and the Constitution.展开更多
基金Supported by the National Natural Science Foundation of China(Nos.51571001,51571063).
文摘Ca3MgNi14,Nd1.5Ca1.5MgNi14,Gd1.5Ca1.5MgNi14 and Er1.5Ca1.5MgNi14 alloys were prepared by high frequency induction melting and sintering.Characterization and analysis were performed by X-ray diffraction/Rietveld full-spectrum fitting,gaseous P-C-T hydrogen storage test and electrochemical properties tests.It can be found that all alloys consist of Gd2Co7-type 3R phase and Ce2Ni7-type 2H phase.Although the hydrogen storage capacities of Nd1.5Ca1.5MgNi14,Gd1.5Ca1.5MgNi14 and Er1.5Ca1.5MgNi14 decrease to some extent compared to that of Ca3MgNi14,their equilibrium pressures for absorption and desorption increase markedly.Moreover,R1.5Ca1.5MgNi14 alloys have better cycling stabilities and high-rate discharge(HRD)properties as compared to Ca3MgNi14.The hydrogen diffusion in alloy electrodes is the main factor to influence the HRD performance.
文摘In 2005,President Xi Jinping,then Secretary of Zhejiang Provincial Party Committee,put forward the notion that“Lucid waters and lush mountains are invaluable assets.”His inspection tour to Anji County and Hangzhou Xixi Wetland,in Zhejiang,was the birthplace of his thoughts on ecological civilization.President Xi on important occasions at home and abroad has repeatedly spoken about the harmonious coexistence between humans and nature,and China’s sustainable development.These thoughts on ecological civilization construction have been written into the Party Constitution and the Constitution.
