|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 固体储氢材料的研究进展显示文摘氢的廉价制取、安全储运以及高效应用是目前氢能研究领域的重点,而安全、高效的氢储运是实现氢能规模化应用的技术关键,因此高容量固态储氢材料的研发具有重要的学术意义和应用价值。固体材料储氢因储氢密度大、安全系数高而成为最有前景的储氢技术,得到了研究者们的广泛关注。本文针对目前国内外固体储氢材料研究现状,论述了几种固体储氢材料的研究进展,包括物理吸附类储氢材料、金属基储氢材料、配位氢化物和水合物储氢材料。重点评述了固态储氢材料中最具发展潜力的镁基储氢材料,并阐述了合金化、纳米化、添加催化剂以及复合轻金属配位氢化物等几种改性方法对镁基储氢材料储氢机理、微观结构、热力学性能、动力学性能的影响。制氢-储氢-用氢一体集成化设计应是固态储氢尤其是镁基储氢产业化应用发展道路,而镁基固态储运氢技术的发展,将可能实现氢气安全高效及大规模储运。 | 刘木子 史柯柯 赵强 李晋平 刘光 | 2023 | 化工进展2023，42，9： | 3 |
| 2 | Effect of Zn atom in Fe-N-C catalysts for electro-catalytic reactions: theoretical considerations显示文摘Due to the high specific surface area,abundant nitrogen and micropores,ZIF-8 is a commonly used precursor for preparing high performance Fe-N-C catalysts.However,the Zn element is inevitably remained in the prepared Fe-N-C catalyst.Whether the residual Zn element affects the catalytic activity and active site center of the Fe-N-C catalyst caused widespread curiosity,but has not been studied yet.Herein,we built several Fe,Zn,and N co-doped graphene models to investigate the effect of Zn atoms on the electrocatalytic performance of Fe-N-C catalysts by using density functional theory method.The calculation results show that all the calculated Fe-Zn-N_(x) structures are thermodynamically stable due to the negative formation energies and relative stabilities.The active sites around Fe and Zn atoms in the structure of Fe-Zn-N_(6)(III)show the lowest oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)overpotentials of 0.38 and 0.43 V,respectively.The bridge site of Fe-Zn in Fe-Zn-N_(5) shows the lowest η^(HER) of−0.26 V.A few structures with a better activity than that of FeN_(4) or ZnN_(4) are attributed to the synergistic effects between Fe and Zn atoms.The calculated ORR reaction pathways on Fe-Zn-N6(III)show that H_(2)O is the final product and the ORR mechanism on the catalyst would be a four-electron process,and the existence of Zn element in the Fe-N-C catalysts plays a key role in reducing the ORR activation energy barrier.The results are helpful for the deep understand of high-performance Fe-N-C catalysts. | Yongcheng Li Riming Hu Zhibin Chen Xin Wan Jia-Xiang Shang Fu-He Wang Jianglan Shui | 2021 | Nano Research2021，14，3： | 3 |
| 3 | Bullet-like vanadium-based MOFs as a highly active catalyst for promoting the hydrogen storage property in MgH_(2)显示文摘The practical application of magnesium hydride(MgH_(2))was seriously limited by its high desorption temperature and slow desorp-tion kinetics.In this study,a bullet-like catalyst based on vanadium related MOFs(MOFs-V)was successfully synthesized and doped with MgH_(2) by ball milling to improve its hydrogen storage performance.Microstructure analysis demonstrated that the as-synthesized MOFs was consisted of V_(2)O_(3) with a bullet-like structure.After adding 7wt%MOFs-V,the initial desorption temperature of MgH_(2) was reduced from 340.0 to 190.6℃.Besides,the MgH_(2)+7wt%MOFs-V composite released 6.4wt%H_(2) within 5 min at 300℃.Hydrogen uptake was started at 60℃under 3200 kPa hydrogen pressure for the 7wt%MOFs-V containing sample.The desorption and absorption apparent activity energies of the MgH_(2)+7wt%MOFs-V composite were calculated to be(98.4±2.9)and(30.3±2.1)kJ·mol^(-1),much lower than(157.5±3.3)and(78.2±3.4)kJ·mol^(−1) for the as-prepared MgH_(2).The MgH_(2)+7wt%MOFs-V composite exhibited superior cyclic property.During the 20 cycles isothermal dehydrogenation and hydrogenation experiments,the hydrogen storage capacity stayed almost unchanged.X-ray diffraction(XRD)and X-ray photoelectron spectrometer(XPS)measurements confirmed the presence of metallic vanadium in the MgH_(2)+7wt%MOFs-V composite,which served as catalytic unit to markedly improve the hydrogen storage properties of Mg/MgH_(2) system. | Zhiyu Lu Jiahuan He Mengchen Song Yan Zhang Fuying Wu Jiaguang Zheng Liuting Zhang Lixin Chen | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，1： | 1 |
| 4 | 3D printing of metal-based materials for renewable energy applications显示文摘Large-scale renewable energy must overcome conversion and storage challenges before it can replace fossil fuels due to its intermittent nature.However,current sustainable energy devices still suffer from high cost,low efficiency,and poor service life problems.Recently,porous metal-based materials have been widely used as desirable cross-functional platforms for electrochemical and photochemical energy systems for their unique electrical conductivity,catalytic activity,and chemical stability.To tailor the porosity length scale,ordering,and compositions,3D printing has been applied as a disruptive manufacturing revolution to create complex architected components by directly joining sequential layers into designed structures.This article intends to summarize cutting-edge advances of metal-based materials for renewable energy devices(e.g.,fuel cells,solar cells,supercapacitors,and batteries)over the past decade. | Shahryar Mooraj Zhen Qi Cheng Zhu Jie Ren Siyuan Peng Liang Liu Shengbiao Zhang Shuai Feng Fanyue Kong Yanfang Liu Eric B.Duoss Sarah Baker Wen Chen | 2021 | Nano Research2021，14，7： | 1 |
| 5 | Recent advances in the nanoconfinement of Mg-related hydrogen storage materials:A minor review显示文摘Hydrogen is an ideal clean energy because of its high calorific value and abundance of sources.However,storing hydrogen in a compact,inexpensive,and safe manner is the main restriction on the extensive utilization of hydrogen energy.Magnesium(Mg)-based hydrogen storage material is considered a reliable solid hydrogen storage material with the advantages of high hydrogen storage capacity(7.6wt%),good performance,and low cost.However,the high thermodynamic stability and slow kinetics of Mg-based hydrogen storage materials have to be overcome.In this paper,we will review the recent advances in the nanoconfinement of Mg-related hydrogen storage materials by loading Mg particles on different supporting materials,including carbons,metal-organic frameworks,and other materials.Perspectives are also provided for designing high-performance Mg-based materials using nanoconfinement. | Jingjing Zhang Bing Zhang Xiubo Xie Cui Ni Chuanxin Hou Xueqin Sun Xiaoyang Yang Yuping Zhang Hideo Kimura Wei Du | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员