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Development of nickel based cermet anode materials in solid oxide fuel cells–Now and future

Materials Reports(energy) 2021年第1期1卷 101-126页

作者： Yu Liu Zongping Shao Toshiyuki Mori San Ping Jiang WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWA6102Australia Centre for Green research in energy and Environmental Materials National Institute of Materials ScienceTsukubaIbaraki305-0044Japan Department of Physics and Astronomy Fuels and Energy Technology InstituteCurtin UniversityGPO Box U1987PerthWA6845Australia

High temperature solid oxide fuel cell(SOFC)is the most efficient and clean energy conversion technology to electrochemically convert the chemical energy of fuels such as hydrogen,natural gas and hydrocarbons to electricity,and also the most viable alternative to the traditional thermal power ***,the power output of a SOFC critically depends on the characteristics and performance of its key components:anode,electrolyte and *** to the highly reducing environment and strict requirements in electrical conductivity and catalytic activity,there are limited choices in the anode materials of SOFCs,particularly for operation in the intermediate temperature range of 500–800*** them,Ni-based cermets are the most common and popular anode materials of *** objective of this paper is to review the development of Ni-based anode materials in SOFC from the viewpoints of materials microstructure,performance and industrial scalability associated with the fabrication and optimization *** latest advancement in nano-structure architecture,contaminant tolerance and interface optimization of Ni-based cermet anodes is *** at the end of this paper,we propose and appeal for the collaborative work of scientists from different disciplines that enable the inter-fusion research of fabrication,microanalysis and modelling,aiming at the challenges in the development of Ni-based cermet anodes for commercially viable intermediate temperature SOFC or IT-SOFC technologies.

关键词： Ni-based cermet anode Intermediate temperature solid oxide fuel cell Activity Interface optimization Carbon deposition Sulfur poisoning Multidisciplinary collaborative work

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Preparing UO_2 kernels by gelcasting

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Nuclear Science and Techniques 2009年第2期20卷 124-128页

作者： GUO Wenli LIANG Tongxiang ZHAO Xingyu HAO Shaochang LI Chengliang institute of Nuclear and New energy Technology Tsinghua University Beijing 100084 China

A process named gel-casting has been developed for the production of dense UO2 kernels for the high-temperature gas-cooled *** with the sol-gel process,the green microspheres can be got by dispersing the U3O8 slurry in gelcasting process,which means that gelcasting is a more facilitative process with less waste in fabricating UO2 *** UO2 kernels with the size of 500 μm,O/U≤2.01,density of 10.70 g·cm-3 were obtained by gel-casting process followed by heat treatment.

关键词：凝胶注模成型内核高温气冷实验堆铀成型过程溶胶凝胶法 U3O8 高密度

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Metal porphyrin intercalated reduced graphene oxide nanocomposite utilized for electrocatalytic oxygen reduction

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Green energy & Environment 2017年第3期2卷 285-293页

作者： Mingyan Wang Qing Wang Wei Zhu Ying Yang Huixian Zhou Fan Zhang Lihua Zhou Joselito M.Razal Gordon G.Wallace Jun Chen Jiangsu Marine Resources Development research institute Huaihai Institute of Technology institute of Frontier Materials Deakin University Intelligent Polymer research institute ARC Centre of Excellence for Electromaterials Science Australian Institute of Innovative Materials University of Wollongong

In this paper, we report a simple and facile self-assembly method to successfully fabricate cationic metal porphyrin-MtTMPyP(Mt= Cobalt(Ⅱ), Manganese(Ⅲ), or Iron(Ⅲ); TMPyP = 5, 10, 15, 20-tetrakis(N-methylpyridinium-4-yl) porphyrin) intercalated into the layer of graphene oxide(GO) by the cooperative effects of electrostatic and π-π stacking interaction between positively charged metal porphyrin and negatively charged GO sheets. Followed by reduction with hydrazine vapor, a series of novel 2 D MtTMPyP/rGO_n were fabricated. The as-prepared 2 D hybrids were fully characterized and tested as non-noble metal catalysts for oxygen reduction reaction(ORR) in an alkaline medium. The MtTMPyP/rGO_n hybrids, especially CoTMPyP/rGO_5, demonstrated an improved electrocatalytic activity for ORR and a number of exchanged electrons close to 4-electron reaction, increased stability and excellent tolerance to methanol, showing a potential alternative catalyst for ORR in fuel cells and air batteries.

关键词： Metal porphyrin Reduced graphene oxide Intercalation Oxygen reduction reaction Catalyst

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Ballistic Trajectory Extrapolation and Correction of Firing Precision for Multiple Launch Rocket System

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Transactions of Nanjing University of Aeronautics and Astronautics 2019年第2期36卷 232-241页

作者： ZHA Qicheng RUI Xiaoting WANG Guoping YU Hailong institute of Launch Dynamics School of Energy and Power EngineeringNanjing University of Science and Technology

The research on multiple launch rocket system(MLRS)is now even more demanding in terms of reducing the time for dynamic calculations and improving the firing accuracy,keeping the cost as low as *** study employs multibody system transfer matrix method(MSTMM),to model *** use of this method provides effective and fast calculations of dynamic characteristics,initial disturbance and firing ***,a new method of rapid extrapolation of ballistic trajectory of MLRS is proposed by using the position information of radar *** extrapolation point is then simulated and compared with the actual results,which demonstrates a good *** closed?loop fire correction method is used to improve the firing accuracy of MLRS at low cost.

关键词： multi-body system transfer matrix method(MSTMM) multiple launch rocket system(MLRS) dynamic modeling ballistic trajectory extrapolation fire correction method

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Shape co-existence and structural evolution of the vi13/2 band in 157Yb

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Science China(Physics,Mechanics & Astronomy) 2003年第2期46卷 131-136页

作者：郑勇周小红张玉虎郭应祥雷相国刘忠刘敏良罗万居温书贤竺礼华杨春祥 China institute of Atomic energy Beijing 102413China institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

The high-spin states ofYb have been studied via the reaction ofSm(O,3n)atO energy of 90 MeV using techniques of in-beam y-ray *** ofγ-γ-t coincidences was performed with 11 BGO（AC）HPGe *** on the γ-γ coin-cidence relationships and the measured results of γ-ray anisotropies and DCO ratios,thelevel scheme foryb was *** shape co-existence and structural evolution ofthe viband with increasing angular momentum inyb have been *** sys-tematics of the vibands in the N=87 odd-A isotones have been compared.

关键词： in-beam γ-ray spectroscopy level scheme structural evolution

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Solar heating assisted rapid cleanup of viscous crude oil spills using reduced graphene oxide-coated sponges

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Science China(Technological Sciences) 2020年第8期63卷 1487-1496页

作者： WANG XinZhi LIU Dan CHENG Gong HUANG YuDong HE YuRong School of energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China Heilongjiang Key Laboratory of New energy Storage Materials and Processes Harbin 150001China MIIT Key Laboratory of Critical Materials Technology for New energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The rapid cleanup of heavy crude oil spills is challenging due to the poor mobility of highly viscous *** absorption strategies involve heating oils to a relatively high temperature to reduce their viscosity,but this method is ***,a solar-heated reduced graphene oxide(rGO)-wrapped melamine sponge(MS)was proposed to rapidly absorb *** prepared rGO-MS exhibited good hydrophobicity and oleophilicity and could be used for the rapid cleanup of oil spills from *** addition,the excellent photothermal conversion effect of rGO enabled the rGO-MS composite to achieve a solar energy absorption efficiency of 91%.Due to the localized solar energy collection and wetting properties of rGO-MS,viscous oil near the contact region was effectively heated,enabling rapid heavy oil recovery under solar light *** proposed solar heating-assisted viscous oil sorbent has great promise for use in heavy oil spill cleanups in the future.

关键词： heavy oil spill hydrophobic and oleophilic porous absorbent graphene photothermal conversion

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The template-assisted zinc ion incorporation in SAPO-34 and the enhanced ethylene selectivity in MTO reaction

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Journal of energy Chemistry 2019年第5期28卷 174-181页

作者： Jiawei Zhong Jingfeng Han Yingxu Wei Shutao Xu Tantan Sun Xinwen Guo Chunshan Song Zhongmin Liu National Engineering Laboratory for Methanol to Olefins State Energy Low Carbon Catalysis and Engineering R&D CenterDalian National Laboratory for Clean EnergyiChEM (Collaborative Innovation Center of Chemistry for Energy Materials)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina State Key Laboratory of Fine Chemicals PSU-DUT Joint Center for Energy ResearchSchool of Chemical EngineeringDalian University of TechnologyDalian 116024LiaoningChina EMS energy institute Departments of Energy and Mineral Engineeringand of Chemical EngineeringThe Pennsylvania State UniversityUniversity Park.PA 16802USA State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

The SAPO-34 catalyst was fine-tuned with zinc cations through a straightforward template-assisted ion incorporation (TH) process, without the necessary template pre-removal and the preparation of NH4- SAPO-34 intermediate, which is more facile, efficient and cost-effective than the conventional ion exchange process. The template-assisted zinc cations incorporated SAPO-34 catalysts were characterized by XRD, XRF, N2 adsorption-desorption, XPS, SEM, EDX,NMR, respectively. Enhanced selectivity to ethylene and ratio of ethylene to propylene in MTO reaction are observed over the zinc cations modified SAPO-34 catalysts, due to the facilitated formation of lower methylbenzenes that favour the ethylene gen eration, as well as the increased diffusion hindrance originated from the zinc cations incorporation and the facil让ated generation of aromatics compound.

关键词： SAPO-34 Metal modification MTO Product selectivity Ethylene

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Molecular approaches to study the insect gut symbiotic microbiota at the ＇omics＇ age

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Insect Science 2010年第3期17卷 199-219页

作者： Weibing Shi Ryan Syrenne Jian-Zhong Sun Joshua S. Yuan Department of Plant Pathology and Microbiology institute for Plant Genomics and Biotechnology Texas A&M University TexasUSA Biofuels institute School of the Environment Jiangsu University Zhenjiang Jiangsu Province China Advanced research institute for Sustainable energy (ARISE) Texas A&M University Texas USA

Insect gut symbiotic microbiota play essential roles in the growth, development, pathogenesis and environmental adaptation of host insects. The molecular and systems level analysis of insect gut symbiotic microbial community will allow us to discover novel biocatalysts for biomass deconstruction and to develop innovative strategies for pest management. We hereby review the various molecular biology techniques as applied to insect gut symbiont analysis. This review aims to serve as an informative resource for experimental design and research strategy development in the field. We first discuss various strategies for sample preparation and their pros and cons. The traditional molecular techniques like DGGE, RFLP and FISH are covered with respect to how they are applied to study the composition, diversity and dynamics of insect gut symbiotic microbiota. We then focus on the various ＇ omics＇ techniques. The metagenome analysis together with the recent advancements in next-generation sequencing will provide enormous sequencing information, allowing in-depth microbial diversity analysis and modeling of pathways for biological processes such as biomass degradation. The metagenome sequencing will also enable the study of system dynamics and gene expression with metatranscriptome and metaproteome methods. The integration of different ＇omics＇ level data will allow us to understand how insect gut works as a system to carry out its functions. The molecular and systems-level understanding will also guide the reverse design of next-generation biorefinery.

关键词： DGGE insect gut metagenomics metaproteomics symbiotic microbiota systems biology

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Synchronized perturbation elimination and DOA estimation via signal selection mechanism and parallel deep capsule networks in multipath environment

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Chinese Journal of Aeronautics 2021年第12期34卷 158-170页

作者： Ying CHEN Cong WANG Kunlai XIONG Zhitao HUANG State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System National University of Defense TechnologyChangsha 410073China institute of Information fusion Naval Aeronautical and Astronautical UniversityYantai 264001China

State-of-the-art model-driven Direction-Of-Arrival(DOA)estimation methods for multipath signals face great challenges in practical application because of the dependence on the precise multipath *** this paper,we introduce a framework,based on deep learning,for synchronizing perturbation auto-elimination with effective DOA estimation in multipath ***,a signal selection mechanism is introduced to roughly locate specific signals to spatial subregion via frequency domain filters and compressive sensing-based ***,we set the mean of the correlation matrix’s row vectors as the input feature to construct the spatial spectrum by the corresponding single network within the parallel deep capsule *** proposed method enhances the generalization capability to untrained scenarios and the adaptability to non-ideal conditions,e.g.,lower SNRs,smaller snapshots,unknown reflection coefficients and perturbational steering vectors,which make up for the defects of the previous model-driven *** are carried out to demonstrate the superiority of the proposed method.

关键词： Deep capsule network Direction-Of-Arrival(DOA)estimation Multipath propagation Parallel training Perturbation elimination

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Experimental study on SC RF cavities by using China large grain niobium for ILC

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Chinese Physics C 2008年第2期32卷 151-155页

作者：宗占国高杰 K. Saito 徐庆金 F. Furuta Y. J. Shim T. Saeki H. Inoue 翟纪元葛明骐谷俊刘立强张亮 institute of High energy Physics Chinese Academy of Sciences Beijing 100049 China Technical institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100080 China institute of Particle and Nuclear Studies High Energy Accelerator Research Organization (KEK) 1-1 Oho Tsukuba Ibavaki-305-0801 Japan Department of Physics Pusan National University Korea Graduate University of Chinese Academy of Sciences Beijing 100049 China

Large grain niobium has the potential of simplifying the production sequence and consequently reducing the cost of the superconducting RF cavities for ILC. To investigate the feasibility of fabrication and the possibility to achieve high gradient by large grain cavities, two 1.3 GHz cavities were made of China large grain niobium and a series of vertical tests were carried out following several different surfaces treatment procedures. Two cavities have both reached the high gradient of more than 43 MV/m repeatedly and the maximum accelerating field of 47.9 MV/m has been achieved by China large grain niobium. This paper introduces the features of the fabrication and surface treatments on the large grain cavities and presents the preliminary results of the research.

关键词： ILC superconducting RF cavity large grain niobium

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