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Size Effect on the Radiation Stability Silicon Dioxide Sphere Particles

Journal of Harbin Institute of technology(New Series) 2024年第4期31卷 1-12页

作者： Vitaly Neshchimenko Chundong Li Mikhail Mikhailov Jinpeng Lv Laboratory of Radiation Stability Evaluation of Thermal Control Coatings Amur State UniversityBlagoveshchensk 675000Russia Science and Technology on Material Performance Evaluating in Space Environment Laboratory Harbin Institute of TechnologyHarbin 150001China Radiation and Space Materials Laboratory Tomsk State University of Control Systems and Radio-ElectronicsTomsk 634050Russia Department of Material Science and Technology Nanjing University of Aeronautics&AstronauticsNanjing 210016China

The effect of protons(E = 100 keV,F = 5×10^(15) cm^(-2)) exposure on the diffuse reflectance spectra of the SiO_(2 )with different size particles in wavelength range from 250 to 2500 nm have been *** were nanosphere,submicrosphere,microsphere and submacrosphere,as well as solid micro-and *** synthesis of the particles was carried out by the formation of silica shells and dissolution of the polystyrene core *** surface morphology,surface area and crystal structure of the particles have been *** evaluating the changes of the solar absorptance,it was found that the radiation stability of the micro-and submacro-hollow particles is higher than that of the other nanostructured particles,except for solid *** low radiation stability of the hollow microparticles is due to the large void inside the hollow particles where radiation defects are not formed.

关键词： silicon dioxide hollow particles spectral reflectance irradiation

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High-entropy L1_(2)-Pt(FeCoNiCuZn)_(3) intermetallics for ultrastable oxygen reduction reaction

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Journal of Energy Chemistry 2023年第11期86卷 158-166,I0004页

作者： Qian Zhang Tao Shen Min Song Shuang Wang Jialin Zhang Xiao Huang Shanfu Lu Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage(Huazhong University of Science and Technology) Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina Beijing Key Laboratory of Bio-inspired Energy Materials and Devices School of Space and EnvironmentBeihang UniversityBeijing 100191China

Enhancing the stability of Pt-based electrocatalysts for the sluggish cathodic oxygen reduction reaction(ORR)is critical for proton exchange membrane fuel cells(PEMFCs).Herein,high-entropy intermetallic(HEI)L1_(2)-Pt(FeCoNiCuZn)3is designed for durable ORR *** from the unique HEI structure and the enhanced intermetallic phase stability,Pt(FeCoNiCuZn)3/C nanoparticles demonstrate significantly improved stability over Pt/C and PtCu_(3)/C *** Pt(FeCoNiCuZn)3/C exhibits a negligible decay of the half-wave potential during 30,000 potential cycles from 0.6 to 1.0 V,whereas Pt/C and PtCu_(3)/C are negatively shifted by 46 and 36 m V,*** after 10,000 cycles at potential up to 1.5 V,the mass activity of Pt(FeCoNiCuZn)3/C still shows~70%*** evidenced by the structural characterizations,the HEI structure of Pt(FeCoNiCuZn)3/C is well maintained,while PtCu_(3)/C nanoparticles undergo severe Cu leaching and particle *** addition,when assembled Pt(FeCoNiCuZn)3/C as the cathode in high-temperature PEMFC of 160℃,the H_(2)-O_(2)fuel cell delivers almost no degradation even after operating for 150 h,demonstrating the potential for fuel cell *** work provides a facile design strategy for the development of high-performance ultrastable electrocatalysts.

关键词： High-entropy intermetallics Pt-based electrocatalysts Oxygen reduction reaction High stability

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Effective purification of oily wastewater using lignocellulosic biomass:A review

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Chinese Chemical Letters 2022年第6期33卷 2807-2816页

作者： Meng Wang Hsu-Sheng Tsai Chaofan Zhang Chengyu Wang Shih-Hsin Ho State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150001China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Bio-based Material Science& Technology(Northeast Forestry University) Ministry of EducationHarbin 150040China

Due to the frequent occurrence of oil spills and the large-scale production of oily wastewater, the treatment of oily sewage has become an important issue for sustainable development. Recently, materials prepared from lignocellulosic biomass(LCB) for oil-water separation have been found to be effective due to their high separation efficiency, good recyclability, and superior sustainability. However, few reviews have focused on the advantages and limitations of LCB for sewage treatment. This review summarizes the performance of modified LCB in oily wastewater treatment, in terms of the advanced modification methods applied and the structural dimensions of LCB materials according to the principle of superwetting oil-water separation. Research on the preparation technologies, separation mechanisms, and treatment efficiency of different LCB materials are briefly summarized, along with the characteristics of different LCB material types for oily wastewater treatment. Finally, the future prospects and challenges faced in the development of LCB materials are discussed.

关键词： Lignocellulosic biomass Superwetting Oily wastewater Wastewater treatment Oil-water separation

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AI-driven predictions of electrochemical CO 2 reduction catalysts: Insights from in situ spectroscopy

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International Journal of Hydrogen Energy 2025年 143卷 37-43页

作者： Yumeng Li Yingmin Jin Tianfeng Zhang Mengyu Fu Ruifan Lin Yuxin Gong Guanshu Li Yueping Xiong MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 PR China Xincheng Information Technology Co. Ltd Shijiazhuang 050035 PR China Key Laboratory of Science and Technology on Material Performance Evaluating in Space Environment School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 PR China

The electrochemical CO 2 reduction reaction is crucial for reducing atmospheric CO 2 and achieving carbon neutrality. Recent researches have predominantly focused on the development of high-performance catalysts, evaluating their performance remains time-consuming. Concurrently, in situ spectroscopic techniques have been instrumental in elucidating catalytic mechanisms and fundamental reaction pathways. In this study, we employ constant potential ab initio molecular dynamics simulations to precisely model the adsorption behavior of CO 2 molecules on Cu–Ag alloy surfaces, with a particular focus on tracking variations in the bond angles of the adsorbed CO 2 . By generating 2600 unique spectral datasets, we leverage convolutional neural networks to extract key spectral features and train a deep learning model to predict the bond angles of adsorbed CO 2 based on the corresponding spectral information. Given that the bond angle of adsorbed CO 2 serves as a crucial descriptor of a catalyst's ability to activate CO 2 molecules, our approach demonstrates the efficacy of AI in predicting catalytic activity. Furthermore, we extend this model's applicability to Cu–Au and Cu–Zn alloys, establishing the potential for AI-driven preliminary catalyst screening based on spectral data. This methodology has the capacity to significantly accelerate the catalyst development pipeline by reducing the reliance on analyzing conventional experimental results manually.

关键词： Electrolytic reduction

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Comparative Study of Proton and Heavy Ion-induced Damages for GaN-based HEMTs 24

Comparative Study of Proton and Heavy Ion-induced Damages fo...

引用

8th International Conference on Electronic Information technology and Computer Engineering, EITCE 2024

作者： Wu, Zhipeng Huang, Huixiang Yang, Jianqun Lei, Zhifeng Cui, Xiuhai Ma, Teng Peng, Chao School of Opto-electronic and Communication Engineering Xiamen University of Technology Fujian Xiamen China National Key Laboratory of Material Behavior and Evaluation Technology in Space Environment Harbin Institute of Technology Heilongjiang Harbin China Science and Technology on Reliability Physics and Application of Electronic Component Laboratory China Electronic Product Reliability and Environmental Testing Research Institute Guangdong Guangzhou China

ISBN: (纸本)9798400710094

The variations of the radiation damage induced by radiation from protons and heavy ions on Cascode GaN HEMTs are comparatively studied. 300 MeV proton and 500 MeV heavy ion irradiation are carried out for AlGaN/GaN HEMTs. Findings from the study indicate that exposure to a proton flux of 300 MeV, reaching a cumulative level of 1×1011 cm-2, leads to a reduction in the output current. Concurrently, there is a downward adjustment of 0.27 volts in the turn-on voltage, along with a 5.59% decline in the peak transconductance. Following irradiation, the creation of traps within the device’s channel layer results in a decline in its electrical efficiency. Under 500 MeV heavy ion irradiation with a total fluence of 3.167×105cm-2, a significant leakage current increase is observed when a drain bias of 100 volts is applied. An enhancement in the output current is observed, accompanied by a 0.11V downward adjustment in the voltage at which the channel forms and a significant 70.17% diminution in peak transconductance. Additionally, instances of single event burnout (SEB) are detectable when the drain bias exceeds 150 V. © 2024 Copyright held by the owner/author(s).

关键词： Gallium nitride

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Recent progress in nuclear astrophysics research and its astrophysical implications at the China Institute of Atomic Energy

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Nuclear science and Techniques 2024年第12期35卷 376-408页

作者： Wei-Ping Liu Bing Guo Zhu An Bao-Qun Cui Xiao Fang Chang-Bo Fu Bin-Shui Gao Jian-Jun He Yu-Chen Jiang Chong Lv Er-Tao Li Ge-Xing Li Yun-Ju Li Zhi-Hong Li Gang Lian Wei-Ping Lin Yi-Hui Liu Wei Nan Wei-Ke Nan Yang-Ping Shen Na Song Jun Su Liang-Ting Sun Xiao-Dong Tang Luo-Huan Wang Shuo Wang You-Bao Wang Di Wu Xiao-Feng Xi Sheng-Quan Yan Li-Yong Zhang China Institute of Atomic Energy Beijing 102413China Department of Physics Southern University of Science and TechnologyShenzhen 518055China Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province Liangshan 615000China School of Physics Xi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Key Laboratory of Nuclear Physics and Ion-beam Application(MoE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Joint Department for Nuclear Physics Institute of Modern PhysicsChinese Academy of Sciences and Lanzhou UniversityLanzhou 730000China CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 73000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhenChina Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Mathematics and Physics Handan UniversityHandan 056005China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China State Key Laboratory of Nuclear Physics and Technology School of PhysicsCAPTPeking UniversityBeijing 100871China

Nuclear astrophysics is a rapidly developing interdisciplinary feld of research that has received extensive attention from the scientifc community since the midtwentieth ***,it uses the laws of extremely small atomic nuclei to explain the evolution of the *** to the complexity of nucleosynthesis processes and our limited understanding of nuclear physics in astrophysical environments,several critical astrophysical problems remain *** achieve a better understanding of astrophysics,it is necessary to measure the cross sections of key nuclear reactions with the precision required by astrophysical *** measurement of nuclear reaction cross sections is an important method of investigating how nuclear reactions infuence stellar *** the challenges involved in measuring the extremely low crosssections of nuclear reactions in the Gamow peak and preparing radioactive targets,indirect methods,such as the transfer reaction,coulomb dissociation,and surrogate ratio methods,have been developed over the past several *** are powerful tools in the investigation of,for example,neutron-capture(n,r)reactions with short-lived radioactive ***,direct measurement is still preferable,such as in the case of reactions involving light and stable *** an essential part of stellar evolution,these low-energy stable nuclear reactions have been of particular interest in recent *** overcome the diffculties in measurements near or deeply within the Gamow window,the combination of an underground laboratory and high-exposure accelerator/detector complex is currently the optimal ***,underground experiments have emerged as a new and promising direction of *** addition,to better simulate the stellar environment in the laboratory,research on nuclear physics under laser-driven plasma conditions has gradually become a frontier *** recent years,the CIAE team conducted a series of distinctive nuclea

关键词： Nuclear astrophysics Indirect method Underground laboratory Direct measurement Lowenergy nuclear reaction

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Heavy Ion-Induced Permanent Damage in Cascode Power GaN HEMTs

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IEEE Transactions on Nuclear science 2025年

作者： Peng, Chao Yang, Jianqun Lei, Zhifeng Cui, Xiuhai Ma, Teng Zhang, Zhangang He, Yujuan Chen, Yiqiang Lu, Guoguang Hu, Xianghong China Electronic Product Reliability and Environmental Testing Research Institute Science and Technology on Reliability Physics and Application of Electronic Component Laboratory Guangzhou511370 China Harbin Institute of Technology National Key Laboratory of Material Behavior and Evaluation Technology in Space Environment Harbin150001 China

Heavy ion-induced leakage current increase is reported for a cascode gallium nitride (GaN) high-electron-mobility-transistor (HEMT), which is related to the damages between gate and drain of the embedded depletion-mode GaN HEMT. The local high temperature-induced damage near the drain contact may be directly related to the leakage degradation. The influences of drain bias and temperature on the leakage increase degradation are investigated by irradiation experiments and technology computer aided design (TCAD) simulations. Radiation-induced gate rupture is also observed for the cascode GaN HEMT during Bi ion irradiation with high linear energy transfer (LET) value. Although the depletion-mode GaN HEMT is the most sensitive component to heavy ion irradiation in the cascode GaN HEMT system, there is also a risk of failure for the Si MOSFET component. © 1963-2012 IEEE.

关键词： Gallium nitride

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Technical challenges of space solar power stations:Ultra-large-scale space solar array systems and space environmental effects

Space Solar Power and Wireless Transmission

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space Solar Power and Wireless Transmission 2024年第2期1卷 69-87页

作者： Weinan Zhang Chengyue Sun Ke Liu Wenhao Shen YiYong Wu Liyong Yao Qi Zhang Wei Zhang Li Wang School of Material Science and Engineering Harbin Institute of TechnologyHarbin150001China National Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of TechnologyHarbin150001China Tianjin Institute of Power Source Tianjin300384China China Academy of Space Technology Beijing100094China

space solar power station(SSPS)are important space infrastructure for humans to efficiently utilize solar energy and can effectively reduce the pollution of fossil fuels to the earth’s natural *** the energy conversion system of SSPS,solar array is an important unit for the successful service of ***,solar arrays represent the standard technology for providing energy for spacecraft,thanks to their high conversion efficiency and reliability/stability in *** the development of solar arrays,many new materials,new photovoltaic devices and new control systems have *** arrays are directly exposed to the space environment,and harsh environmental factors can degrade the *** ensure the long-term safe inorbit service of SSPS as well as its ultra-large solar array,these new materials,devices,and control systems must operate certification and evaluation that can be used in space *** this review,the development history and research progress of SSPS and the corresponding space solar arrays are summarized and discussed,and the space environmental effects of solar arrays are analyzed at multiple levels(materials,devices,and systems).Finally,in response to the current space environmental effects of the ultra-large solar array used in the SSPS,future development trends and challenges are proposed.

关键词： space solar power stations space solar array space environmental effects Health management

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Turning Trash into Treasure: Recycling Ti3c2tx Oxide Through Channel Engineering Towards High-Capacity Supercapacitors

SSRN

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SSRN 2023年

作者： Liu, Xudong Liu, Yong Dong, Shangli Zhang, Xuefeng Wei, Yidan Lv, Lu He, Sirui School of Material Science and Engineering Harbin Institute of Technology Harbin150001 China Huizhou University Guangdong516007 China National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment Harbin Institute of Technology Harbin150001 China

The channel (hole and interlayer) engineering on 2D MXenes has been proved to be an effective strategy to solve the issues of congested ion transport pathway, limited active sites and sluggish ion transport kinetics caused by restacking of MXene nanosheets, which extended the application in the field of energy storage. Herein, a simple channel engineering strategy was proposed to treat the long-term stored Ti3C2T x , resulting formation of an interlayer-expanded holey Ti3C2T x film via etching out Ti3C2T x oxides. The in situ oxides expanded the interlayer spacing and created holes on the Ti3C2T x nanosheets, which formed channels in all directions. The interlayer-expanded holey Ti3C2T x film showed outstanding electrochemical performance, with both high capacity (448 F/g at 2 mV/s) and good cyclic stability (95.3% retention after 5000 cycles). Importantly, this strategy effectively recycles the waste MXenes that are oxidized by long-term storage, which embodies the concept of low-carbon environmental protection and promoting the industrialization process of MXenes. © 2023, The Authors. All rights reserved.

关键词： Supercapacitor

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Tuning the Pore Size Distribution of Ti3c2tx Porous Film for High Capacity Supercapacitor Electrode

SSRN

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SSRN 2023年

作者： Liu, Yong Liu, Xudong Dong, Shangli Zhang, Xuefeng Wei, Yidan Lv, Lu He, Sirui School of Material Science and Engineering Harbin Institute of Technology Harbin150001 China Huizhou University Guangdong516007 China National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment Harbin Institute of Technology Harbin150001 China

The closely restacked MXene nanosheets obstruct electrolyte ion transfer in electrodes, limmiting the electrochemical performance at a high charging-discharging rate. Although various 3D porous structures have been constructed, size effect of porous MXenes electrodes has been rarely studied. Herein, the classical metal ion-assisted method was used to fabricate 3D porous MXene films. The pore size distribution was changed by adjusting the cation valency. Noteworthy, when the mesoporous pore size distribution is in the range of 5~10 nm, the porous structure can significantly improve the electrochemical performance and the presence of micropores can increase the proportion of surface capacitance. As a result, the porous Ti3C2Tx film treated by Mg2+ showed outstanding electrochemical performance, with both high capacity (420 F/g at 2 mV/s ) and good cyclic stability (94.4% retention after 5000 cycles). This work presents a study on how pore size distribution of porous MXene film effects the electrochemical performance and provides a reference for the design of 3D porous MXene electrodes. © 2023, The Authors. All rights reserved.

关键词： Pore size

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