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MOF-derived Ni3Fe/Ni/NiFe2O4@C for enhanced hydrogen storage performance of MgH2

Journal of Energy Chemistry 2025年第2期101卷 333-344页

作者： Yangping Chen Bolin Sun Guoqing Zhang Siyuan Ni Canbing Li Juxiong Tian Yanrui Zhang Xinxi Li School of Materials and Energy Guangdong University of Technology Shen Zhen Source Sensor technology co. Ltd Department of Electrical Engineering Shanghai Jiao Tong University China Power Investment Xinjiang Energy & Chemical Group Hotan co.ltd

Magnesium hydride（MgH2） is an important material for hydrogen（H2） storage and transportation owing to its high capacity and ***,its intrinsic properties have considerably limited its industrial *** this study,the NiFe-800 catalyst as metal-organic framework（MOF） derivative was first utilized to promote the intrinsic properties of *** to pure MgH2,which releases1.24 wt% H2in 60 min at 275℃,the MgH2-10 NiFe-800 composite releases 5.85 wt% H2in the same *** at a lower temperature of 250℃,the MgH2-10 NiFe-800 composite releases 3.57 wt% H2,surpassing the performance of pure MgH2at 275℃.correspondingly,while pure MgH2absorbs 2.08 wt% H2in60 min at 125℃,the MgH2-10 NiFe-800 composite absorbs 5.35 wt% H2in just 1 min,Remarkably,the MgH2-10 NiFe-800 composite absorbs 2.27 wt% H2in 60 min at 50℃ and 4.64 wt% H2at 75℃.This indicates that MgH2-10 NiFe-800 exhibits optimum performance with excellent kinetics at low ***,the capacity of the MgH2-10 NiFe-800 composite remains largely stable after ***,the Mg2Ni/Mg2NiH4acts as a "hydrogen pump",providing effective diffusion channels that enhance the kinetic process of the composite during ***,Fe0facilitates electron transfer and creates hydrogen diffusion channels and catalytic ***,carbon（C） effectively prevents particle agglomeration and maintains the cyclic stability of the ***,the synergistic effects of Mg2Ni/Mg2NiH4,Fe0,and C considerably improve the kinetic properties and cycling stability of *** work offers an effective and valuable approach to improving the hydrogen storage efficiency in the commercial application of MgH2.

关键词： Catalysts hydrogen energy MgH2 MOF derivative Solid state storage

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Elucidating the operating behavior of PEM fuel cell with nickel foam as cathode flow field

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Science China(Technological Sciences) 2021年第5期64卷 1041-1056页

作者： HUO Sen SHI WeiYu WANG RenFang LU BingBing WANG Yang JIAO Kui HOU ZhongJun shanghai hydrogen propulsion technology co. Ltd.Shanghai 201804China State Key Laboratory of Engines Tianjin UniversityTianjin 300350China

Metal foam material,which serves as an alternative replacement of the conventional flow distributor of proton exchange membrane(PEM)fuel cell,has been attracting much attention over last few *** this work,three-dimensional modeling work for PEM fuel cell containing metal foam as cathode flow distributor has been carried *** fuel cell performance and operating characteristics of metal foam flow field and conventional parallel flow channel have been compared and *** cell performance has been reasonably validated based on the corresponding experimental tests conducted in this *** superior performance of PEM fuel cell with metal foam as cathode flow field benefits a lot from the uniform gas *** porous metal foam material provides more pathways for the water delivery at the interface of metal foam flow field and gas diffusion layer(GDL),accelerating water removal capability of *** of the significant oxygen transfer loss in diffusion limited parallel channel,the operation of PEM fuel cell with parallel channel is found to be more sensitive to cathode humidification and oxygen supply at *** to the more uniform and effective electron transport though the porous electrode,it is possible to use thinner GDL in metal foam PEM fuel *** is expected that this study could give a good baseline of operating behavior of PEM fuel cell with metal foam flow distributor.

关键词： proton exchange membrane fuel cell metal foam flow field conventional parallel flow field numerical analysis experimental tests

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Prediction of high frequency resistance in polymer electrolyte membrane fuel cells using long short term memory based model

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Energy and AI 2021年第1期3卷 115-125页

作者： Tong Lin Leiming Hu Willetta Wisely Xin Gu Jun Cai Shawn Litster Levent Burak Kara Carnegie Mellon University PittsburghPA 15213USA shanghai hydrogen propulsion technology co.ltd Innovation ParkLane 56Antuo RdJiadingShanghai 201800P.R.China

High-frequency resistance(HFR)is a critical quantity strongly related to a fuel cell system’s *** is beneficial to estimate the fuel cell system’s HFR from the measurable operating conditions without resorting to costly HFR measurement *** this study,we propose a data-driven approach for a real-time prediction of ***,we use a long short-term memory(LSTM)based machine learning model that takes into account both the current and past states of the fuel cell,as characterized through a set of *** sensor signals form the input to the *** data is experimentally collected from a vehicle lab that operates a 100 kW automotive fuel cell stack running on an automotive-scale test *** current results indicate that our prediction model achieves high accuracy HFR predictions and outperforms other frequently used regression *** also study the effect of the extracted features generated by our LSTM *** study finds that only very few dimensions of the extracted feature are influential in HFR *** study highlights the potential to monitor HFR condition accurately and timely on a car.

关键词： PEM fuel cell High frequency resistance Dynamic system prediction Machine learning LSTM

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Runchangningshen paste activates NLRP6 inflammasome-mediated autophagy to stimulate colonic mucin-2 secretion and modulates mucosal microbiota in functional constipation

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World Journal of Gastroenterology 2025年第9期31卷 100-134页

作者： Xue-Jiao Liu Ye-li-ya Ye-er-tai Yue-Bo Jia Chen-Heng Wu Xiang-Xiang Wang Ke-Ming Yang Xuan Yao Jiang-Hong Ling Department of Gastroenterology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 200021China School of Traditional Chinese Medicine Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Gastroenterology Shenzhen Traditional Chinese Medicine HospitalShenzhen 518033Guangdong ProvinceChina Guangdong Shaxi Pharmaceutical co. LtdZhongshan 528471Guangdong ProvinceChina

BACKGROUND Runchangningshen paste(RCNSP)is a paste made of four medicinal and edible homologous Chinese medicine mixed with *** is known for its ability to nourish yin and blood as well as to loosen the bowel to relieve *** pathophysiology of functional constipation(FC)is associated with a reduction in mucin-2(MUC2)secretion and microbial *** To investigate the underlying mechanism of RCNSP against FC through MUC2 and the gut mucosal *** Ultra-performance liquid chromatography tandem mass spectrometry characterized RCNSP composition to elucidate the material basis of *** model was induced via loperamide gavage(16 mg/kg)twice daily for 7 *** defecation function and gastrointestinal motility to assess constipation *** and eosin and Alcian blue-periodic acid-schiff staining analyzed colonic mucosal *** electron microscope was used to observe the ultrastructure of goblet cells(GCs).Immunofluorescence colocalization,quantitative PCR,and western blot assessed the impact of RCNSP on gene and protein expression within the NLRP6/autophagy pathway.16S rDNA was employed to sequence the gut mucosal *** RCNSP contained 12 components with potential laxative *** enhanced defecation function,accelerated gastrointestinal motility,and maintained colonic mucosal *** treatment significantly increased GC abundance and MUC2 production while preserving GC *** the molecular level,RCNSP enhanced the colocalized expression of key regulatory proteins and modulated mRNA and protein expressions in the NLRP6/autophagy *** 16S rDNA sequencing analysis,RCNSP significantly altered the mucosal microbiota ***,it increased beneficial bacterial strains while reducing harmful ***,RCNSP reduced butyrate-producing bacteria like Proteobacteria,Enterobacteriaceae,Blautia,and Eubacterium and decreased hydrogen sulfide-

关键词： Traditional Chinese medicine Functional constipation NLRP6 Autophagy Mucosal microbiota Mucin Goblet cells

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Exploration of Gas‑Dependent Self‑Adaptive Reconstruction Behavior of Cu_(2)O for Electrochemical co_(2) conversion to Multi‑Carbon Products

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Nano-Micro Letters 2025年第3期17卷 280-296页

作者： Chaoran Zhang Yichuan Gu Qu Jiang Ziyang Sheng Ruohan Feng Sihong Wang Haoyue Zhang Qianqing Xu Zijian Yuan Fang Song State Key Laboratory of Metal Matrix composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Structural reconstruction of electrocatalysts plays a pivotal role in catalytic performances for co_(2)reduction reaction(co_(2)RR),whereas the behavior is by far superficially ***,we report that co_(2)accessibility results in a universal self-adaptive structural reconstruction from Cu_(2)O to Cu@CuxO composites,ending with feeding gas-dependent microstructures and catalytic *** co_(2)-rich atmosphere favors reconstruction for co_(2)RR,whereas the co_(2)-deficient one prefers that for hydrogen evolution *** the assistance of spectroscopic analysis and theoretical calculations,we uncover a co_(2)-induced passivation behavior by identifying a reductionresistant but catalytic active Cu(I)-rich amorphous layer stabilized by*co ***,we find extra co production is indispensable for the robust production of *** inverse correlation between durability and FEco/FEC2H4 is disclosed,suggesting that the selfstabilization process involving the absorption of*co intermediates on Cu(I)sites is essential for durable *** by this insight,we design hollow Cu_(2)O nanospheres for durable and selective co_(2)RR electrolysis in producing *** work recognizes the previously overlooked passivation reconstruction and self-stabilizing behavior and highlights the critical role of the local atmosphere in modulating reconstruction and catalytic processes.

关键词： co_(2)reduction reaction Electrocatalysts Cu_(2)O Reconstruction Self-adaptive electrocatalysis

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Data-based flooding fault diagnosis of proton exchange membrane fuel cell systems using LSTM networks

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Energy and AI 2021年第2期4卷 45-56页

作者： Xin Gu Zhongjun Hou Jun Cai shanghai hydrogen propulsion technology co. Ltd.Unit 10BLDG 17Innovation ParkLane 56Antuo Rd.JiadingShanghai PR China

Flooding fault diagnosis is critical to the stable and efficient operation of fuel cells,while the on-board embedded controller has limited computing power and sensors,making it difficult to incorporate the complex gas-liquid two-phase flow *** in fuel cell system for cars,the neural network modeling is usually regarded as an appropriate tool for the on-line diagnosis of water *** neural network classifiers are not good at processing time series data,so in this paper,Long Short-Term Memory(LSTM)network model is developed and applied to the flooding fault diagnosis based on the embedded ***,the fuel cell auxiliary system statuses are adopted as the inputs of the diagnosis network,which avoids installing a large number of sensors in the fuel cell system,and contributes to reduce the total system *** bench test on the 92 kW vehicle fuel cell system proved that this model can effectively diagnose/pre-diagnose the fuel cell flooding,and thus help optimize the water management under vehicle conditions.

关键词： Proton exchange membrane fuel cell Flooding diagnosis Data-driven diagnosis Long Short-Term Memory network

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Stable nanobubbles on ordered water monolayer near ionic model surfaces

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Chinese Physics B 2025年第1期34卷 143-148页

作者： Luyao Huang Cheng Ling Limin Zhou Wenlong Liang Yujie Huang Lijuan Zhang Phornphimon Maitarad Dengsong Zhang Chunlei Wang Research Center of Nano Science and technology Department of ChemistryCollege of SciencesShanghai UniversityShanghai 200444China International Joint Laboratory of Catalytic Chemistry College of SciencesShanghai UniversityShanghai 200444China shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

The stable nanobubbles adhered to mineral surfaces may facilitate their efficient separation via flotation in the mining ***,the state of nanobubbles on mineral solid surfaces is still *** this study,molecular dynamics(MD)simulations are employed to examine mineral-like model surfaces with varying degrees of hydrophobicity,modulated by surface charges,to elucidate the adsorption behavior of nanobubbles at the *** findings not only contribute to the fundamental understanding of nanobubbles but also have potential applications in the mining *** observed that as the surface charge increases,the contact angle of the nanobubbles increases accordingly with shape transformation from a pancake-like gas film to a cap-like shape,and ultimately forming a stable nanobubble upon an ordered water *** the solid–water interactions are weak with a small partial charge,the hydrophobic gas(N_(2))molecules accumulate near the solid ***,we have found,for the first time,that gas molecules assemble a nanobubble on the water monolayer adjacent to the solid surfaces with large partial *** phenomena are attributed to the formation of a hydrophobic water monolayer with a hydrogen bond network structure near the surface.

关键词： nanobubbles molecular dynamic simulation ordered water monolayer hydrogen bond network

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Thermal annealing synthesis of double-shell truncated octahedral Pt-Ni alloys for oxygen reduction reaction of polymer electrolyte membrane fuel cells

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Frontiers in Energy 2020年第4期14卷 767-777页

作者： Xiashuang LUO Yangge GUO Hongru ZHOU Huan REN Shuiyun SHEN Guanghua WEI Junliang ZHANG Institute of Fuel Cells School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China shanghai hydrogen propulsion technology co. LtdShanghai 201804China SJTU-Paris Tech Elite Institute of technology Shanghai Jiao Tong UniversityShanghai 200240China Institute of Fuel Cells School of Mechanical EngineeringMOE Key Laboratory for Power Machinery and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Shape-controlled Pt-Ni alloys usually offer an exceptional electrocatalytic activity toward the oxygen reduction reaction(ORR)of polymer electrolyte membrane fuel ceils(PEMFCs),whose tricks lie in welldesigned structures and surface *** this paper,a novel synthesis of truncated octahedral PtNi_(3.5) alloy catalysts that consist of homogeneous Pt-Ni alloy cores enclosed by NiO-Pt double shells through thermally annealing defective heterogeneous PtNi35 alloys is *** tracking the evolution of both compositions and morphologies,the outward segregation of both PtOv and NiO are first observed in Pt-Ni *** is speculated that the diffusion of low-coordination atoms results in the formation of an energetically favorable truncated octahedron while the outward segregation of oxides leads to the formation of NiO-Pt double *** is very attractive that after gently removing the NiO outer shell,the dealloyed truncated octahedral core-shell structure demonstrates a greatly enhanced ORR *** asobtained truncated octahedral Pt_(2.1)Ni core-shell alloy presents a 3.4-folds mass-specific activity of that for unannealed sample,and its activity preserves 45.4%after 30000 potential cycles of accelerated degradation test(ADT).The peak power density of the dealloyed truncated octahedral Pt2jNi core-shell alloy catalyst based membrane electrolyte assembly(MEA)reaches 679.8 mW/cm^(2),increased by 138.4 mW/cm^(2) relative to that based on commercial Pt/C.

关键词： dealloyed Pt-Ni alloys truncated octahedron double-shell thermal annealing oxygen reduction reaction(ORR)

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Catalytic combustion of methane over a highly active and stable Ni0/Ce02 catalyst

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Frontiers of Chemical Science and Engineering 2020年第4期14卷 534-545页

作者： Xiuhui Huang Junfeng Li Jun Wang Zeqiu Li Jiayin Xu School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering Shanghai 200093China shanghai MCC20 construction co.ltd Shanghai 201999China

In the last decades,many reports dealing with technology for the catalytic combustion of methane(CH4)have been ***,attention has increasingly focused on the synthesis and catalytic activity of nickel *** this paper,a NiO/CeO2 catalyst with high catalytic performance in methane combustion was synthe-sized via a facile impregnation method,and its catalytic activity,stability,and water-resistance during CH4 com-bustion were investigated.X-ray diffraction,low-tempera-ture N2 adsorption,thermogravimetric analysis,Fourier transform infrared spectroscopy,hydrogen temperature programmed reduction,methane temperature programmed surface reaction,Raman spectroscopy,electron paramag-netic resonance,and transmission electron microscope characterization of the catalyst were conducted to determine the origin of its high catalytic activity and stability in *** incorporation of NiO was found to enhance the concentration of oxygen vacancies,as well as the activity and amount of surface *** a result,the mobility of bulk oxygen in CeO2 was *** presence of CeO2 prevented the aggregation of NiO,enhanced reduction by NiO,and provided more oxygen species for the combustion *** results of a kinetics study indicated that the reaction order was about 1.07 for CH4 and about 0.10 for O2 over the NiO/CeO2 catalyst.

关键词： methane combustion NiO/CeO2 catalyst interaction oxygen vacancy kinetic study

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Atomic cerium-doped CuO_(x) catalysts for efficient electrocatalytic co_(2) reduction to CH_(4)

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Chinese Chemical Letters 2025年第1期36卷 326-331页

作者： Xiangyu Chen Aihao Xu Dong Wei Fang Huang Junjie Ma Huibing He Jing Xu Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification technology School of Chemistry and Chemical EngineeringGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for composite Structures Guangxi UniversityNanning 530004China State Key Laboratory of Green Chemical Engineering and Industrial Catalysis School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

copper(Cu)is widely used in the electrochemical carbon dioxide reduction reaction(Eco_(2)RR)for efficient methane(CH_(4))***,the morphology and valence of Cu-based catalysts are usually unstable under reaction *** this work,we prepared Ce-doped MOF-199 precursor(Ce/HKUST-1)and further obtained nanoparticle electrocatalyst Ce/CuO_(x)-NPs by cyclic voltammetry(CV)*** Faradic efficiency of methane(FE_(CH_(4)))maintains above 62%within a broad potential window of 350 mV and the maximum FE_(CH_(4))reaches 67.4%with a partial current density of 293 mA/cm^(2)at-1.6 V vs.a reversible hydrogen *** characterization and theoretical calculations revealed that the unique electronic structure and large ionic radius of Cerium(Ce)not only promoted the generation of key intermediate*co but also lowered energy barrier of the*co to*CHO *** study provides a novel and efficient catalyst for methane production in Eco_(2)RR and offers profound insights into constructing high performance Cu-based catalysts.

关键词： Eco_(2)RR Cu-based catalyst Structure evolution DFT calculation

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