Hollow structured Fe@C nanorods for boosting dehydrogenation properties of α-AlH_(3)  

作　　者：Yuan Zhao Qingshuang Wang Dongming Yin Xiaoli Wang Shouliang Li Chunli Wang Long Liang Shaolei Zhao Limin Wang Yong Cheng 

机构地区：[1]School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130022,China [2]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [3]Shandong Provincial Key Laboratory of Monocrystalline Silicon Semiconductor Materials and Technology,College of Chemistry and Chemical Engineering,Dezhou University,Dezhou 253023,China [4]Henan Nayu New Material Co.,Ltd.,Xinxiang 453000,China

出　　处：《Nano Research》2024年第9期8184-8191,共8页纳米研究（英文版）

基　　金：supported by the Key R&D projects of Jilin Provincial Science and Technology Development Plan(Nos.20230201140GX and 20230201125GX);the National Key Research and Development Program of China(No.2021YFB4000604);the Youth Innovation Promotion Association CAS(No.2022225);the Youth Growth science and technology Plan project of Jilin Province Science and Technology Development Plan(No.20220508001RC);the Independent Research Project of the State Key Laboratory of Rare Earth Resources Utilization(No.110000RL86);the Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,the National Natural Science Foundation of China(No.22103010);the Natural Science Foundation of Shandong Province(No.ZR2021QB104).

摘　　要：α-AlH_(3)is regarded as one of the most promising hydrogen storage materials due to its high hydrogen storage capacity(10.1 wt.%,148 kg·m^(-3)).However,in practical applications,the associated hydrogen release temperature remains relatively high.To effectively address this issue,hollow structured Fe@C nanorods derived from Fe-MOF are introduced as highly efficient catalyst to optimize the dehydrogenation properties ofα-AlH_(3).Comparatively,the initial hydrogen release temperature ofα-AlH_(3)+3 wt.%Fe@C is reduced to 94.2℃,which is significantly lower than that of pureα-AlH_(3)(137.8℃).At 100 and 120℃,it exhibits hydrogen capacities of 5.38 wt.%and 7.47 wt.%,respectively,whereas pureα-AlH_(3)only delivers hydrogen capacities of 0.24 wt.%and 5.94 wt.%under the same temperatures.The density functional theory(DFT)calculations further indicate that the existence of Fe@C catalyst can make the length of Al-H bond increase,which is more conducive to the release of hydrogen.The results show that the synergistic effect of Fe and porous carbon in Fe@C nanorods can improve the hydrogen desorption kinetics ofα-AlH_(3),providing a good prospect for the application ofα-AlH_(3)in hydrogen storage fields.

关 键 词：Fe@C α-AlH_(3) DEHYDROGENATION CATALYST 

分 类 号：O64[理学—物理化学]