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In-situ transformed Mott-Schottky heterointerface in silver/manganese oxide nanorods boosting oxygen reduction,oxygen evolution,and hydrogen evolution reactions

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Nano Research 2024年第5期17卷 3622-3632页

作者： Ruiqi Cheng Kaiqi li Huanxin li Fengzhan Sun Xiaoqian He Tianshuo Zhao jiao Zhang Chaopeng Fu Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Christopher Ingold Laboratory Department of ChemistryUniversity College LondonLondon WC1H 0AJUK Department of Chemistry Physical&Theoretical Chemistry LaboratoryUniversity of OxfordSouth Parks RoadOxford OX13QZUK Center of Hydrogen Science School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The development of non-platinum group metal(non-PGM)and efficient multifunctional electrocatalysts for oxygen reduction reaction(ORR),oxygen evolution reaction(OER),and hydrogen evolution reaction(HER)with high activity and stability remains a great ***,by in-situ transforming silver manganese composite oxide heterointerface into boosted Mott-Schottky heterointerface through a facile carbon reduction strategy,a nanorod-like silver/manganese oxide with superior multifunctional catalytic activities for ORR,OER and HER and stability was *** nanorod-like silver/manganese oxide with Mott-Schottky heterointerface(designated as Ag/Mn_(3)O_(4))exhibits an ORR half-wave potential of 0.831 V(***)in 0.1 M KOH,an OER overpotential of 338 mV and a HER overpotential of 177 mV at the current density of 10 mA·cm^(-2)in 1 M KOH,contributing to its noble-metal benchmarks comparable performance in aqueous aluminum-air(Al-air)battery and laboratorial overall water splitting electrolytic ***,in-situ electrochemical Raman and synchrotron radiation spectroscopic measurements were conducted to further illustrate the catalytic mechanism of Ag/Mn_(3)O_(4)Mott-Schottky heterointerface towards various electrocatalytic *** the heterointerface,the Ag phase serves as the electron donor and the active phase for ORR and HER,while the Mn_(3)O_(4)phase serves as the electron acceptor and the active phase for OER,*** work deepens the understanding of the Mott-Schottky effect on electrocatalysis and fills in the gap in fundamental physical principles that are behind measured electrocatalytic activity,which offers substantial implications for the rational design of cost-effective multifunctional electrocatalysts with Mott-Schottky effect.

关键词： heterointerface electron donor-acceptor pair electrocatalyst Al-air battery water splitting

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Towards the insights into the deactivation behavior of acetylene hydrogenation catalyst

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Petroleum Science 2024年第2期21卷 1405-1414页

作者： Hai-Xia Su Yang jiao Jian-Gong Shi Zhi-Wei Yuan Di Zhang Xu-Peng Wang jing Ren Dan liu Jian-Zhou Gui Hai-Yang Gao Xiao-li Xu State Key Laboratory of Separation Membranes&Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process EngineeringSchool of Material Science and EngineeringTiangong UniversityTianjin300387China Institute of Engineering Technology Sinopec Catalyst Co.LtdBeijing101100China State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process EngineeringSchool of ChemistryTiangong UniversityTianjin300387China

A series of model catalysts were obtained by treating commercial fresh and spent catalysts unloaded from the factory with different methods, including green oil dipping, extraction and high-temperature regeneration;finally, the deactivation behavior of the commercial catalyst for acetylene hydrogenation were studied. The influence of various possible deactivation factors on the catalytic performance was elucidated via detailed structural characterization, surface composition analysis, and activity *** results showed that green oil, carbon deposit and sintering of active metal were the main reasons for deactivation, among which green oil and carbon deposit led to rapid deactivation, while the activity could be recovered after regeneration by high-temperature calcination. The sintering of active metal components was attributed to the high-temperature regeneration in hydrothermal conditions, which was slow but irreversible and accounted for permanent deactivation. Thus, optimizing the regeneration is expected to extend the service life of the commercial catalyst.

关键词： Acetylene Hydrogenation Green oil Carbon deposit Sintering Catalyst deactivation

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Insight into the capacity degradation and structural evolution of single-crystal Ni-rich cathodes

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Journal of Energy Chemistry 2024年第8期95卷 68-76,I0003页

作者： Xiaodong Zhang jiao lin Ersha Fan Qingrong Huang Su Ma Renjie Chen Feng Wu li li Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Advanced Technology Research Institute Beijing Institute of TechnologyJinan 250300ShandongChina Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Single-crystal Ni-rich cathodes are a promising candidate for high-energy lithium-ion batteries due to their higher structural and cycling stability than polycrystalline ***,the phase evolution and capacity degradation of these single-crystal cathodes during continuous lithation/delithation cycling remains *** the mapping relationship between the macroscopic electrochemical properties and the material physicochemical properties is ***,we investigate the correlation between the physical-chemical characteristics,phase transition,and capacity decay using capacity differential curve feature identification and in-situ X-ray spectroscopic *** systematically clarify the dominant mechanism of phase evolution in aging *** high cut-off voltages can mitigate the slow kinetic and electrochemical properties of single-crystal *** also find that second-order differential capacity discharge characteristic curves can be used to identify the crystal structure disorder of Ni-rich *** findings constitute a step forward in elucidating the correlation between the electrochemical extrinsic properties and the physicochemical intrinsic properties and provide new perspectives for failure analysis of layered electrode materials.

关键词： Single-crystal cathodes Capacity decay Phase transition Differential capacity analysis

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A comprehensive review on the development of data-driven methods for wind power prediction and AGC performance evaluation in wind–thermal bundled power systems

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Energy and AI 2024年第2期16卷 450-463页

作者： Shuai Wang Bin li Guanzheng li Botong li Hongbo li Kui jiao Chengshan Wang National Industry-Education Platform for Energy Storage Tianjin UniversityTianjin300350China Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin300072China Power Dispatching and Control Center Inner Mongolia Power(Group)Co.LtdHohhot010020China

The wind–thermal bundled power system achieves energy complementarity and optimized scheduling, which is an important way to build a new type of energy system. For the safe and stable operation of the wind–thermal bundled power system, accurate data-driven analysis is necessary to maintain real-time balance between electricity supply and demand. By summarizing the development and characteristics of wind–thermal bundled power system in China and different countries, current research in this field can be clearly defined in two aspects: short-term wind power prediction for wind farms and performance evaluation of automatic generation control (AGC) for thermal power generation units. For short-term wind power prediction, it is recommended to focus on historical data preprocessing and artificial intelligence methods. The technical characteristics of different data-driven wind power prediction methods have been compared in detail. For performance evaluation of AGC units, a comprehensive analysis was conducted on current evaluation methods, including the “permitted-band” and “regulation mileage” methods, as well as the issue of evaluation failure in traditional evaluation methods in practical engineering. Finally, the relative optimal dynamic performance of AGC units was discussed and the future trend of data-driven research in wind–thermal bundled power system was summarized.

关键词： Wind power prediction Automatic generation control Performance evaluation Data-driven Feature analysis

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From molecule to cell:the expanding frontiers of plant immunity

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Journal of Genetics and Genomics 2024年第7期51卷 680-690页

作者： Lei li jing liu Jian-Min Zhou Key Laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Hainan Yazhou Bay Seed Laboratory SanyaHainan 572025China

In recent years,the field of plant immunity has witnessed remarkable *** the co-evolution between plants and pathogens,plants have developed a wealth of intricate defense mechanisms to safeguard their *** identified immune receptors have added unexpected complexity to the surface and intracellular sensor networks,enriching our understanding of the ongoing plant–pathogen *** the molecular mechanisms of resistosome shapes our understanding of these mysterious molecules in plant ***,technological innovations are expanding the horizon of the plant–pathogen battlefield into spatial and temporal *** the development provides new opportunities for untangling the complex realm of plant immunity,challenges remain in uncovering plant immunity across spatiotemporal dimensions from both molecular and cellular levels.

关键词： Plant immunity Calcium Spatiotemporal Biomolecular condensate Immune receptor Resistosome

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Two-dimensional particle-in-cell modeling of blow-off impulse by X-ray irradiation

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Nuclear Science and Techniques 2024年第3期35卷 53-69页

作者： Ruibo li Jin-Long jiao Hui Luo Dezhi Zhang Dengwang Wang Kai Wang Graduate School of China Academy of Engineering Physics Beijing 100193China Zhejiang Institute of Modern Physics Institute of AstronomySchool of PhysicsZhejiang UniversityHangzhou 310027China National Key Laboratory of Intense Pulsed Radiation Simulation and Effect Northwest Institute of Nuclear TechnologyXi’an 710024China

Space objects such as spacecraft or missiles may be exposed to intense X-rays in outer space,leading to severe *** reinforcement of these objects to reduce the damage caused by X-ray irradiation is a significant *** blow-off impulse(BOI)is a crucial physical quantity for investigating material damage induced by X-ray ***,the accurate calculation of BOI is challenging,particularly for large deformations of materials with complex *** this study,we develop a novel two-dimensional particle-in-cell code,Xablation2D,to calculate BOIs under far-field X-ray *** significantly reduces the dependence of the numerical simulation on the grid *** reliability of this code is verified by simulation results from open-source codes,and the calculated BOIs are consistent with the experimental and analytical results.

关键词： X-ray irradiation Energy deposition Blow-off impulse Particle in cells

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A statistical study on the correlation between sporadic Ca+ layer and Es in Beijing（40.5°N, 116°E）

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Earth and Planetary Physics 2024年第5期8卷 753-761页

作者： YuChang Xun ZhiShan Chen liFang Du HaoRan Zheng jing jiao ZeLong Wang ShaoHua Gong GuoTao Yang College of Physics College of Electronic Information and Optical Engineering Taiyuan University of Technology State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences School of Science Jiangsu University of Science and Technology School of Physics and Electronics Engineering Hainan Normal University

From April 2020 to June 2022, a Ca+lidar with dual-wavelength and narrow-band emitting lasers utilizing all-solid-state technology was employed to conduct observations in Beijing（40.41°N, 116.01°E） for a total duration of 1797.79 hours over 280 nights. A total of 286 sporadic Ca+layers were observed, with heights ranging from 88 to 120 km and densities varying from 5.33 to 2200 cm-3. We simultaneously observed the ionosonde, located 28 km from the lidar, and found a correlation of 61.89% between the sporadic Ca+ layer and the sporadic E layer. When the sporadic Ca+layer has a downward phase trend, there is a correlation of 76.84%. By excluding the influence of ionosonde sensitivity, we focus only on calcium ions that have a density exceeding 140 cm-3, which exhibit a correlation of82.25%. Above 100 km, the correlation significantly increases, reaching approximately 90%. Furthermore, the correlation between the sporadic Ca+ layer and the sporadic E layer is particularly noticeable during the summer season, reaching around 90%. This phenomenon can be attributed to the variations in metal ions that occur during different seasons.

关键词： the Meridian Project lidar sporadic Ca+ layer sporadic E layer

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Towards high-entropy alloys with high-temperature corrosion resistance and structural stability

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Journal of Materials Science & Technology 2024年第7期174卷 133-144页

作者： Meifeng li Hani Henein Chungen Zhou jing liu Department of Chemical and Material Engineering University of AlbertaEdmonton T6G 2R3AlbertaCanada Department of Materials Science and Engineering Beihang UniversityBeijing 100191China

Complex component alloys(CCAs)consisting of multiple principal elements potentially encompass su-perior mechanical properties and good corrosion *** high-entropy alloys(EHEAs)stand out from CCAs as the desired candidates for high-temperature(HT)applications due to the combined advantages of HEA alloys and unique equilibrium eutectic *** work first explores the ther-modynamic calculation route toward HEAs with eutectic *** of pseudo-binary diagrams of transition metal(TM)CCAs were calculated with the Calphad approach to locate the potential eutectic *** representatives of a CrFeCoNi_(2.2)Al alloy with eutectic structure and a non-eutectic CrFeCoNiCu alloy were cast,and their HT performance was further evaluated by hot corrosion with Na_(2)SO_(4)+25 wt%NaCl molten salts at 700,800 and 900℃,*** HT degradation mechanism was explicitly revealed from a comprehensive thermodynamic *** between the HT performance and the inherent physicochemical properties of the constituent phases and the alloying components were addressed for the first *** was found that the mixing enthalpy(△H_(mix))and valance electron concen-tration(VEC)played more decisive roles in the hot corrosion resistance than the mixing entropy(△S_(mix))of CCAs.A strategy for tailoring and developing HEAs for HT application by modulating alloy chemistry and microstructural features was proposed.

关键词： CCAs HEAs EHEAs Hot corrosion Phase stability Calphad

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A self-powered solar-blind UV-enhanced Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si heterojunction photodetector for full spectral photoresponse and imaging

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Nano Research 2024年第4期17卷 2960-2970页

作者： Yajie Han Shujie jiao Jiangcheng jing Lei Chen Ping Rong Shuai Ren Dongbo Wang Shiyong Gao Jinzhong Wang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Self-powered full-spectrum photodetectors(PDs)offer numerous advantages,such as broad application fields,high precision,efficiency,and multi-functionality,which represent a highly promising and potentially valuable class of detectors for future ***,insensitive response to solar-blind ultraviolet(UV)and complex and expensive preparation processes greatly limit their performance and practical *** this study,a self-powered full-spectrum Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si heterojunction PD with high sensitivity for solar-blind UV band prepared by a simple and low-cost two-step synthesis method is *** results reveal that the developed PD has an excellent performance,such as high sensitivity from 200 to 850 nm,and a responsivity of 1.38 mA/W as well as a detectivity of 3.22×10^(10) Jones under 254 nm light at zero ***,the unencapsulated device displays exceptional stability and imaging *** is expected that Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si heterojunction PD with a simple and low-cost synthesis method has great potential for self-powered full-spectrum photodetectors.

关键词： Bi_(2)Se_(3)/a-Ga_(2)O_(3)/p-Si self-powered photodetector full spectral photoresponse imaging

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lipid-lowering effects of gefarnate in statin-treated patients with residual hypertriglyceridemia:a randomized controlled study

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Journal of Geriatric Cardiology 2024年第8期21卷 791-798页

作者： jing SHI Ming-Lu XU Mei-jiao HE Wan-Lan BO Hai-Yu ZHANG Dang-Hui SUN Ding-Yu WANG Xiao-Yu WANG Qun SHAO Yu-jiao PAN Yu ZHANG Chen-Guang DAI jing-Ying WANG lin-Wei ZHANG Guang-Zhong liU Yue li for the GPROT Study Group Department of Cardiology the First Affiliated HospitalHarbin Medical UniversityHarbinChina Department of Gastroenterology the Fourth Affiliated HospitalHarbin Medical UniversityHarbinChina Department of Cardiology Harbin Medical University Cancer HospitalHarbinChina Department of Cardiology Shenzhen People’s HospitalShenzhenChina National Key Laboratory of Frigid Zone Cardiovascular Diseases Harbin Medical UniversityHarbinChina NHC Key Laboratory of Cell Transplantation Key Laboratory of Cardiovascular Disease Acousto-Optic Electromagnetic Diagnosis and Treatment in Heilongjiang ProvinceHeilongjiang Province Clinical Medical Research Center for Hypertensionthe First Affiliated HospitalHarbin Medical UniversityHarbinChina Institute of Metabolic Disease Heilongjiang Academy of Medical ScienceHarbinChina 不详

BACKGROUND The prevention of coronary artery disease(CAD)faces dual challenges:the aspirin-induced gastrointestinal injury,and the residual cardiovascular risk after statin *** acetate(Gefarnate)is an anti-ulcer *** was reported that geraniol might participate in lipid metabolism through a variety of *** aim of this study was to assess the lipid-lowering effects of gefarnate in statin-treated CAD patients with residual *** In this prospective,open-label,randomized,controlled trial,69 statin-treated CAD patients with residual hypertriglyceridemia were randomly assigned to gefarnate group and control group,received gefarnate(100 mg/3 times a day)combined with statin and statin alone,*** baseline and after one-month treatment,the levels of plasma triglyceride,high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C)and total cholesterol were *** After one-month gefarnate treatment,triglyceride level was significantly lowered from 2.64 mmol/L to 2.12 mmol/L(P=0.0018),LDL-C level lowered from 2.7 mmol/L to 2.37 mmol/L(P=0.0004),HDL-C level increased from 0.97 mmol/L to 1.17mmol/L(P=0.0228).Based on statin therapy,gefarnate could significantly reduce the plasma triglyceride level(P=0.0148)and increase the plasma HDL-C level(P=0.0307).Although the LDL-C and total cholesterol levels tended to decrease,there was no statistically significant *** The addition of gefarnate to statin reduced triglyceride level and increased HDL-C level to a significant extent compared to statin alone in CAD patients with residual *** suggested that gefarnate might provide the dual benefits of preventing gastrointestinal injury and lipid lowering in CAD patients.

关键词： nat alone lipid

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