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Insight into rare-earth-incorporated catalysts:The chance for a more efficient ammonia synthesis

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Journal of Advanced Ceramics 2022年第10期11卷 1499-1529页

作者： Yutong GONG Hongchen LI Can LI Xiaobing BAO hideo hosono Junjie WANG State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China School of Materials Science and Engineering Northwestern Polytechnical UniversityXi’an 710072China Materials Research Center for Element Strategy Tokyo Institute of TechnologyYokohama 226-8503Japan

Recent studies have suggested that rare earth(RE)elements in catalysts significantly influence the performance of the ammonia *** REs appear in various forms in the ammonia synthesis catalysts including supports(oxides,hydrides,and nitrides),promotors,and *** the conventional RE oxide-supporting catalysts(mainly Ru/REO),some new RE-containing catalyst systems,such as electrode and nitride systems,could drive the ammonia synthesis via a benign Mars-van Krevelen mechanism or multi-active-site mode,affording high ammonia synthesis performance under mild *** works demonstrate the great potential of RE-containing catalysts for more efficient ammonia *** review summarizes the contributions of different kinds of RE-based catalysts and highlights the function mechanism of incorporated ***,an overview of this area and the challenges for further investigation are provided.

关键词： ammonia synthesis rare earth(RE) heterogeneous catalysis mild conditions mechanism

Pressure-induced reemergence of superconductivity in BaIr_(2)Ge_(7)and Ba_(3)Ir_(4)Ge_(16)with cage structures

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Matter and Radiation at Extremes 2022年第3期7卷 62-69页

作者： Cuiying Pei Tianping Ying Yi Zhao Lingling Gao Weizheng Cao Changhua Li hideo hosono Yanpeng Qi School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Materials Research Center for Element Strategy Tokyo Institute of TechnologyYokohama 226-8503Japan ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Shanghai Key Laboratory of High-Resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China

Clathrate-like or caged compounds have attracted great interest owing to their structural flexibility,as well as their fertile physical ***,we report the pressure-induced reemergence of superconductivity in BaIr2Ge7 and Ba3Ir4Ge16,two new caged superconductors with two-dimensional building blocks of cage *** suppression of the ambient-pressure superconducting(SC-I)states,new superconducting(SC-II)states emerge unexpectedly,with Tc increased to a maximum of 4.4 and 4.0 K for BaIr2Ge7 and Ba3Ir4Ge16,*** with high-pressure synchrotron x-ray diffraction and Raman measurements,we propose that the reemergence of superconductivity in these caged superconductors can be ascribed to a pressure-induced phonon softening linked to cage shrinkage.

关键词： ambient cage superconductors

Synthesis of stable iodoplumbate and perovskite for efficient annealing-free device and long-term storage

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SusMat 2023年第6期3卷 821-833页

作者： Jihyun Kim Sang-Won Park Younghyun Lee hideo hosono Byungwoo Park Jinhyun Kim Department of Chemical and Materials Engineering University of SuwonHwaseongSouth Korea MDX Research Center for Element Strategy International Research Frontiers InitiativeTokyo Institute of TechnologyYokohamaJapan Department of Materials Science and Engineering Korea Advanced Institute of Science and TechnologyDaejeonSouth Korea Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulSouth Korea

As a next-generation photovoltaic device,perovskite solar cells are rapidly ***,both solution and device stability pose challenges for commercialization due to chemical degradation caused by internal and external ***,the decomposition of iodoplumbate in a perovskite solution hinders the long-term use of perovskite ***,the synthesis of stable perovskites at low temperature is important for stable devices and wide applications(flexible devices and high reproducibility).Herein,the critical composition of perovskite is found to obtain high stabilities of both iodoplumbate and perovskite crystals by utilizing CsPbBr_(3) and FAPbI_(3),exhibiting high device performance and long-term solution *** novel composition of CsPbBr_(3)-alloyed FAPbI_(3) not only crystallizes under annealing-free conditions but also demonstrates excellent iodoplumbate stability for 100 days(∼3000 h)without any ***,high device stabilities are achieved over 2000 and 3000 h under extreme conditions of A.M.1.5 and 85℃/85%relative humidity,***,the device exhibited a high power conversion efficiency of 23.4%,and furthermore,CsPbBr_(3)-alloyed FAPbI_(3) was devoted to widen the applications in both flexible and carbon-electrode devices,thereby addressing both scientific depths and potential commercial materials.

关键词： annealing free DFT calculation iodoplumbate long-term stability perovskite solar cells

Superconductivity induced by field-driven proton injection

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Science Bulletin 2018年第1期63卷 5-6页

作者： hideo hosono Materials Research Center for Element Strategy Tokyo Institute of Technology

Doping is a key operation to induce *** materials do not exhibit superconductivity in most cases of high Tcsystems but convert into superconductor when carriers are *** of impurity diminishes the long range ordering of spin,charge and/or orbitals,and superconductivity emerges in the neighbor of boundary between ordered and non-ordered *** parent phase of high-Tccuprate superconductors

关键词：超导性注射质子驱动超导体键操作绝缘体父母

Crystal and electronic structure engineering of tin monoxide by external pressure

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Journal of Advanced Ceramics 2021年第3期10卷 565-577页

作者： Kun LI Junjie WANG Vladislav ABLATOV Yutong GONG NaotoUMEZAWA Tomofumi TADA hideo hosono Artem ROGANOV State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China International Center for Materials Discovery School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Samara Center for Theoretical Materials Science(SCTMS) Samara State Technical UniversitySamara 443100Russia Samara Center for Theoretical Materials Science(SCTMS) Samara UniversitySamara 443011Russia Semiconductor R&D Center Samsung ElectronicsGyeonggi-do 18448Republic of Korea Materials Research Center for Element Strategy Tokyo Institute of TechnologyKanagawa 226-8503Japan Skolkovo Institute of Science and Technology Moscow 143026Russia Moscow Institute of Physics and Technology Dolgoprudny 141700Russia

Although tin monoxide (SnO) is an interesting compound due to its p-type conductivity,a widespread application of SnO has been limited by its narrow band gap of 0.7 *** this work,we theoretically investigate the structural and electronic properties of several SnO phases under high pressures through employing van der Waals (vdW) *** calculations reveal that a metastable SnO (β-SnO),which possesses space group P2_(1)/c and a wide band gap of 1.9 eV,is more stable than α-SnO at pressures higher than 80 ***,a stable (space group P2/c) and a metastable (space group Pnma) phases of SnO appear at pressures higher than 120 *** and topological analyses show that P2/c-SnO has a high possibility to directly transform to β-SnO at around 120 *** work also reveals that β-SnO is a necessary intermediate state between high-pressure phase Pnma-SnO and low-pressure phase α-SnO for the phase transition path Pnma-SnO →β-SnO →α-*** phase transition analyses indicate that there is a high possibility to synthesize β-SnO under high-pressure conditions and have it remain stable under normal ***,our study reveals that the conductive property of β-SnO can be engineered in a low-pressure range (0-9 GPa)through a semiconductor-to-metal transition,while maintaining transparency in the visible light range.

关键词： tin monoxide van der Waals(vdW) topological relationship phase transition band gap

Large magnetocaloric effect in van der Waals crystal CrBr3

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Frontiers of physics 2019年第4期14卷 71-75页

作者： Xiaoyun Yu Xiao Zhang Qi Shi Shangjie Tian Hechang Lei Kun Xu hideo hosono State Key Laboratory of Information Photonics and Optical Communications & School of Science Beijing University of Posts and Telecommunications Beijing 100876 China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices Renmin University of China Beijing 100872 China Materials Research Center for Element Strategy Tokyo Institute of Technology (MCES) Yokohama Kanagawa 226-8503 Japan Materials and Structures Laboratory Tokyo Institute of Technology Yokohama Kanagawa 226-8503 Japan

We study the magnetocaloric effect (MCE) in van der Waals (vdW) crystal *** CrBr3 exhibits a second-order paramagnetic-ferromagnetic phase transition with TC =33 *** maximum magnetic entropy change-△SM near TC is about 7.2 ***-1.K-1 with the maximum adiabatic temperature change △Tadmax =2.37 K and the relative cooling power RCP =191.5 ***-1 at μoH =5 T,all of which are remarkably larger than those in *** results suggest that the vdW crystal CrBr3 is a promising candidate for the low-dimensional magnetic refrigeration in low temperature region.

关键词： magnetocalotic effect 2D magnetic materials

Identifying quasi-2D and 1D electrides in yttrium and scandium chlorides via geometrical identification

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npj Computational Materials 2018年第1期4卷 17-25页

作者： Biao Wan Yangfan Lu Zewen Xiao Yoshinori Muraba Junghwan Kim Dajian Huang Lailei Wu Huiyang Gou Jingwu Zhang Faming Gao Ho-kwang Mao hideo hosono Key Laboratory of Metastable Materials Science and Technology College of Material Science and EngineeringYanshan University066004 QinhuangdaoChina Center for High Pressure Science and Technology Advanced Research 100094 BeijingChina Materials Research Center for Element Strategy Tokyo Institute of Technology4259 NagatsutachoMidori-ku Yokohama226-8503 KanagawaJapan Laboratory for Materials and Structures Institute of Innovative ResearchTokyo Institute of TechnologyMailbox R3-44259 Nagatsuta-choMidori-ku226-8503 YokohamaJapan Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan University066004 QinhuangdaoChina Geophysical Laboratory Carnegie Institution of Washington5251 Broad Branch Road NWWashingtonDC 20015USA

Developing and understanding electron-rich electrides offers a promising opportunity for a variety of electronic and catalytic *** a geometrical identification strategy,here we identify a new class of electride material,yttrium/scandium chlorides Y(Sc)_(x)Cl_(y)(yx<2).Anionic electrons are found in the metal octahedral framework *** diverse electronic dimensionality of these electrides is quantified explicitly by quasi-two-dimensional(2D)electrides for[YCl]^(+)∙e−and[ScCl]^(+∙)e−and one-dimensional(1D)electrides for[Y_(2)Cl_(3)]^(+)∙e−,[Sc_(7)Cl_(10)]^(+)∙e−,and[Sc5Cl8]2+∙2e−with divalent metal elements(Sc^(2+):3d^(1) and Y^(2+):4d^(1)).The localized anionic electrons were confined within the inner-layer spaces,rather than inter-layer spaces that are observed in A_(2)B-type 2D electrides,***_(2)***,when hydrogen atoms are introduced into the host structures to form YClH and Y2Cl3H,the generated phases transform to conventional ionic compounds but exhibited a surprising reduction of work function,arising from the increased Fermi level energy,contrary to the conventional electrides reported so far.Y_(2C)l_(3) was experimentally confirmed to be a semiconductor with a band gap of 1.14 *** results may help to promote the rational design and discovery of new electride materials for further technological applications.

关键词： yttrium quasi rational

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一种新型超导母体:褶皱的蜂窝状空位有序

Science Bulletin 2021年第4期66卷 327-331,M0003页

作者：齐彦鹏应天平吴贤新董卓雅 Masato Sasase 张青刘为燕 Masaki Ichihara 马延航胡江平 hideo hosono School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Materials Research Center for Element Strategy Tokyo Institute o f TechnologyYokohama 226-8503Japan Institut fur Theoretische Physik und Astrophysik Julius-Maximilians-Universitat WurzburgWurzburg 97074Germany Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences.Beijing 100190China

空位在材料体系中无处不在,空位的存在也极大地影响了材料的光学、热学、电学等性质.目前,空位的研究主要集中在弱关联的体系,而在强关联体系中的空位以及空位和其他新奇量子现象的关系则知之甚少.本文在强关联铱化物Ir16Sb18中发现了... 详细信息

空位在材料体系中无处不在,空位的存在也极大地影响了材料的光学、热学、电学等性质.目前,空位的研究主要集中在弱关联的体系,而在强关联体系中的空位以及空位和其他新奇量子现象的关系则知之甚少.本文在强关联铱化物Ir16Sb18中发现了一种新奇的空位有序:褶皱的蜂窝状空位序.理论计算表明实空间的空位有序来源于倒空间的费米面嵌套,而空位有序的形成破坏了对称性,使得费米面附近的电子局域化.通过在空位中引入Ir或者用Rh来替代Ir,可以有效地破坏空位有序从而引入超导电性.空位有序与超导电性的竞争关系表明:具有褶皱的蜂窝状空位有序的Ir16Sb18是一种新型的超导母体.这种独特的褶皱蜂窝状空位有序,及其实空间-倒空间的关系,表明了"关联空位"的重要性,这为探索更多新奇量子临界现象带来契机.

关键词：量子现象蜂窝状超导电性费米面 16S 强关联弱关联褶皱

Robust two-gap strong coupling superconductivity associated with low-lying phonon modes in pressurized Nb5Ir3O superconductors

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Chinese Physics B 2019年第10期28卷 215-221页

作者：王铂森张尧卿徐淑香 Kento Ishigaki Kazuyuki Matsubayashi 程金光 hideo hosono Yoshiya Uwatoko Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China Institute for Solid State Physics University of TokyoKashiwanoha 5-1-5KashiwaChiba 277-8581Japan Materials Research Center for Element Strategy Tokyo Institute of TechnologyYokohama 226-8503Japan Songshan Lake Materials Laboratory Dongguan 523808China

We report robust superconducting state and gap symmetry of Nb5Ir3O via electrical transport and specific heat measurements. The analysis of specific heat manifests that Nb5Ir3O is a strongly coupled superconductor with ΔC/γnTc ~ 1.91 and double s-wave superconducting gaps of 2ΔL(0)/kBTc ~ 6.56 and 2ΔS(0)/kBTc ~ 2.36 accounting for 90% and 10%,respectively. The(Cp-γnT)/T^3 vs. T plot shows a broad peak at ~ 23 K, indicating phonon softening and the appearance of low-lying phonon mode associated with the interstitial oxygen. This behavior explains the monotonic increase of Tc in Nb5Ir3O(1-δ)by strengthening the electron-phonon coupling and enlarging the density of states at Fermi level. The Hall coefficient is temperature independent below 200 K, and changes its sign from positive to negative above 250 K, suggesting that carrier is across the hole-to electron-dominant regions and the multi-band electronic structures. On warming, the resistivity shows a gradual crossover from T^2-to T^3-dependence at a critical temperature T^*, and a broad peak at a temperature Tp. The reduced Tc under pressure is linearly correlated with lattice parameters c/a ratio and Tp, suggesting the important phonon contributions in Nb5Ir3O as a phonon-medicated superconductor. Possible physical mechanisms are proposed.

关键词： new superconductor high-pressure effect strongly coupled superconductor