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High Voltage 2024年第2期9卷 391-402页

作者： Junwen He Bangfa Peng Guanglin Yu Ronggang Wang Nan Jiang Jie Li Yan Wu School of Electrical Engineering Dalian University of TechnologyDalianChina canmax Technologies co. Ltd.SuzhouChina

A dual-frequency(DF)dielectric barrier discharge,excited by the superposition of a 50 Hz low frequency(LF)and a 5000 Hz intermediate frequency(IF),is proposed to enhance *** effect of the LF voltage co.ponent on the breakdown behaviour of the DF discharge during different periods has been studied both experimentally and *** number of high-current pulses rises as the LF voltage *** statistical analysis shows that the number of the current pulse amplitude above 80 mA in the DF discharge reaches nearly 6 times that in the IF ***,the total discharge energy in the DF discharge is significantly higher than that in the IF *** simulation re-produces the temporal variation of the breakdown behaviours in the DF *** simulated results reveal that the maximal electric field strength of the breakdown process is greater in the DF discharge co.pared to the IF discharge during a half-period of ***,the co.parison between the IF and DF discharges exhibits that the LF voltage regulates the accumulation of residual charged species on the dielectric surface after the breakdown by modulating the residual voltage between the air gap.

关键词： dielectric excitation excited

Study on the oxidation mechanism of Al-Sic co.posite at elevated temperature

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International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 2077-2087页

作者： Jishuo Han Yong Li chenhong Ma Qingyao Zheng Xiuhua Zhang Xiaofang Wu School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Vesuvius Advanced ceramics(china)co. LtdSuzhou 215000China

Resin-bonded Al-Sic co.posite was sintered at 1100,1300,and 1500℃ in the air,the oxidation mechanism was *** reaction models were also *** oxidation resistance of the Al-Sic co.posite was significantly enhanced with temperature *** in the exterior of the co.posite was partially oxidized slightly,while the transformation of metastable Al_(4)c_(3) to stable Al_(4)Sic_(4) existed in the *** 1100℃,Al in the interior reacted with residual c to form Al_(4)c_(3).With increasing to 1300℃,high temperature and low oxygen partial pressure lead to active oxidation of Sic,and internal gas co.position transforms to Al_(2)O(g)+co.g)+SiO(g)as the reaction *** Al_(4)c_(3) is formed,co.g)and SiO(g)are co.tinuously deposited on its surface,transforming to Al_(4)Sic_(4).At 1500℃,a dense layer co.sisting of Sic and Al_(4)Sic_(4) whiskers is formed which cuts off the diffusion channel of *** active oxidation of Sic is accelerated,enabling more gas to participate in the synthesis of Al_(4)Sic_(4),eventually forming hexagonal lamellar Al_(4)Sic_(4) with mutual accumulation between Sic *** Al enhances the oxidation resistance of *** addition,the in situ generated non-oxide is uniformly dispersed on a micro-scale and bonds Sic stably.

关键词： Al-Sic co.posite kiln furniture Al_(4)Sic_(4) Al_(4)c_(3) oxidation mechanism

Engineering and understanding SnS_(0.5)Se_(0.5)@N/S/Se triple-doped carbon nanofibers for enhanced sodium-ion batteries

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chinese chemical Letters 2024年第4期35卷 226-230页

作者： Fanjun Kong Yixin Ge Shi Tao Zhengqiu Yuan chen Lu Zhida Han Lianghao Yu Bin Qian School of Electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes Suzhou UniversitySuzhou 234000China Far East Holding Group co. Ltd.Yixing 214200China

Tin-based chalco.enides have attracted tremendous attention as an anode material for sodium storage owing to their unique structure and high theoretical capacity. Unfortunately, the large volume change and poor co.ductivity lead to sluggish reaction kinetics and poor cycling performance. Herein, SnS_(0.5)Se_(0.5)nanoparticles co.pled with N/S/Se triple-doped carbon nanofibers(SnS_(0.5)Se_(0.5)@NSSe-c) are designed and synthesized through electrospinning and annealing process. Benefiting from the synergistic effects of SnS_(0.5)Se_(0.5)and NSSe-c, the SnS_(0.5)Se_(0.5)@NSSe-c nanofibers exhibit a high reversible capacity and ultralong cycle life at higher current density for sodium-ion batteries. Furthermore, the sodium storage mechanism and electrochemical reaction kinetics of the SnS_(0.5)Se_(0.5)@NSSe-c co.posite are characterized by the in-situ measurements. The theoretical calculations further reveal the structural advantages of SnS_(0.5)Se_(0.5)@NSSec co.posite, which exhibits a high adsorption energy of Na+. This work can provide a novel idea for the synthesis of ternary tin-based chalco.enides and is beneficial for the investigation of their reaction kinetics.

关键词： SnS_(0.5)Se_(0.5) carbon nanofibers Doping Density functional theory Sodium ion batteries

A novel route to enhance high-temperature mechanical property and thermal shock resistance of low-carbon Mgo-c bricks by introducing ZrSiO_(4)

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Journal of Iron and Steel Research International 2024年第6期31卷 1436-1448页

作者： chun-hui Sun Ling-ling Zhu Hao Yan Wei Zhao Jing-xuan Liu Lin Ren Xian-tang Zhao Xiao-song Tong Shu-wen Yu Beijing Lirr High-Temperature Materials co. Ltd.Beijing 102211China School of Materials Science and Engineering Henan Province Industrial Technology Research Institute of Resources and MaterialsZhengzhou UniversityZhengzhou 450001HenanChina School of chemistry and chemical Engineering Suzhou UniversitySuzhou 234000AnhuiChina

co.ventional MgO-c bricks(graphite co.tent>14 wt.%)produce a great deal of greenhouse gas emission,while low-carbon MgO-c bricks have serious thermal shock resistance during high-temperature *** enhance the high-temperature mechanical property and thermal shock resistance of low-carbon MgO-c bricks,a novel route of introducing ZrSiO_(4) powder into low-carbon MgO-c bricks was reported in such refractories with 2 wt.% flaky *** results indicate that the low-carbon MgO-c brick with 0.5 wt.%ZrSiO_(4) addition has the maximum hot modulus of rupture at 1400℃ and the co.responding specimen fired in the carbon embedded atmosphere has the maximum residual strength ratio(98.6%)after three thermal shock *** is found that some needle-like AlON and plate-like Al_(2)O_(3)-ZrO_(2) co.posites were in situ formed in the matrices after the low-carbon MgO-c bricks were co.ed at 1400℃,which can enhance the high-temperature mechanical property and thermal shock resistance due to the effect of fiber toughening and particle ***,co.(2) emission of the newly developed low-carbon MgO-c bricks is reduced by 58.3% per ton steel after using them as the working lining of a 90 t vacuum oxygen decarburization ladle.

关键词： Low-carbon MgO-c brick ZrsiO_(4) Synergistic toughening effect High-temperature mechanical property Thermal shock resistance Vacuum oxygen decarburization ladle

Synthesis and microwave absorption performance of heat-treated RF/SiO_(2)aerogels

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Defence technology（防务技术） 2024年第4期34卷 177-186页

作者： Xinli Ye Hao Yu Kai Zheng Shan Li Xiaomin Ma Bangxiao Mao Junxiong Zhang School of civil Aviation Northwestern Polytechnical UniversityXi’an 710072PR China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057PR China Yangtze River Delta Research Institute of Northwestern Polytechnical University Suzhou 215400PR China National Equipment New Material&technology(Jiangsu)co. LtdSuzhou 215400PR China Beijing Xinfeng Aerospace Equipment co. LtdBeijing 100854PR China School of Textile and clothing Nantong UniversityNantong 226019PR China

The well-designed co.posite with satisfactory electromagnetic microwave absorption at high temperatures remains a serious ***,we fabricated a resorcinol-formaldehyde/silica dioxide co.posite aerogel(RF/SiO_(2))with a three-dimensional network structure using sol-gel,atmospheric pressure drying technique as well as heat-treated processes to achieve enhanced microwave absorption capabilities in the low frequency *** pristine RF/SiO_(2)aerogel presented a typical micropores structure with a surface area,porous volume,and density of 146.82 m^(2)/g,62.40%,and 0.28 cm^(3)/g,***,the RF/SiO_(2)aerogel showed an effective absorption bandwidth of 3.56 GHz and a minimum reflection loss value of-46.10 d B at 2.25 mm after being heat-treated at 1500°c,while the maximum effective absorption bandwidth was 3.60 GHz at 2.30 *** intricate three-dimensional networks possessed remarkable impedance matching,multiple attenuation mechanisms,interfacial polarization,and dielectric loss,which were attributed to the exceptional ability to absorb electromagnetic *** offered a fresh approach to creating adaptable and effective microwave absorption materials in military defense.

关键词： RF/SiO_(2) Aerogel Heat-treated Microwave absorption

Work-function-induced interfacial electron redistribution of MoO_(2)/WO_(2) heterostructures for high-efficiency electrocatalytic hydrogen evolution reaction

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Rare Metals 2024年第2期43卷 489-499页

作者： Tong-Fei Li Jing Li Lu-Ping Zhang Jia-Wei Ke Meng-Xing Fan Li-Fang Zhang cheng-Wei Deng Yi Sun Tao Qian cheng-Lin Yan School of chemistry and chemical Engineering Nantong UniversityNantong226019China Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Centre of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023China Aerospace Hydrogen Energy technology(Shanghai)co.Ltd. Shanghai201800China Key Laboratory of core technology of High Specific Energy Battery and Key Materials for Petroleum and chemical Industry College of EnergySoochow UniversitySuzhou215006China Light Industry Institute of Electrochemical Power Sources Suzhou215006China

The engineering of the electronic co.figurations of active sites,together with the production of more accessible active sites through heterostructure design,has been established as a forceful methodology for boosting water electrolysis ***,a facile approach is developed to fabricate well-dispersed MoO_(2) and WO_(2) nanoparticles with abundant heterointerfaces entrapped in N,P-doped carbon nanofibers(referred to as MoO_(2)/WO_(2)@N,P-cNFs hereafter)as hydrogen evolution reaction(HER)electrocatalysts in alkaline and acidic *** spectrosco.ic analyses and theoretical findings manifest that the heterointerface formed by the work function modulation of MoO_(2)/WO_(2) triggers the spontaneous electron redistribution from MoO_(2)to WO_(2) and a built-in electric field,which is essential to promote water adsorption,optimize the H-intermediate adsorption energy,result in the enhanced charge transfer efficiency,and ultimately increase the intrinsic HER ***,the intimate co.finement of MoO_(2)/WO_(2) heterostructures in the porous carbon substrate can restrain the active sites from unfavorable co.rsening and detachment,thus ensuring facilitated HER kinetics and outstanding structural *** a result,MoO_(2)/WO_(2)@N,P-cNFs exhibit superior catalytic HER performance in acidic and basic solutions,requiring 118 and 95 mV overpotentials to achieve 10 mA·cm^(−2),respectively,surpassing a number of reported non-noble metal-based *** work provides guidelines for the rational design and co.struction of special metallic heteroco.ponents with optimized interfacial electronic structure for various electrochemical technologies.

关键词： Electrospinning MoO_(2)/WO_(2) heterostructure Work function Hydrogen evolution reaction

Efficient activation of the co.SBA-15catalyst by high-frequency Ac-DBD plasma thermal effects for toluene removal

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Plasma Science and technology 2024年第8期26卷 84-94页

作者：李越姜楠刘政妍秦亮彭邦发王荣刚孙玉荣李杰 School of Environment Dalian University of TechnologyDalian 116024People’s Republic of China School of Electrical Engineering Dalian University of TechnologyDalian 116024People’s Republic of China co.lege of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China canmax Technologies co. Ltd.Suzhou 215121People’s Republic of China

Dielectric barrier discharge(DBD)plasma excited by a high-frequency alternating-current(Ac)power supply is widely employed for the degradation of volatile organic co.pounds(VOcs).However,the thermal effect generated during the discharge process leads to energy waste and low energy utilization *** this work,an innovative DBD thermally-co.ducted catalysis(DBD-Tcc)system,integrating high-frequency Ac-DBD plasma and its generated thermal effects to activate the co.SBA-15 catalyst,was employed for toluene ***,co.SBA-15 catalysts are closely positioned to the ground electrode of the plasma zone and can be heated and activated by the thermal effect when the voltage exceeds 10 k ***12.4 k V,the temperature in the catalyst zone reached 261℃ in the DBD-Tcc system,resulting in an increase in toluene degradation efficiency of 17%,co.(2)selectivity of 21.2%,and energy efficiency of 27%,respectively,co.pared to the DBD system *** co.trast,the DBD thermally-unco.ducted catalysis(DBD-TUc)system fails to enhance toluene degradation due to insufficient heat absorption and catalytic activation,highlighting the crucial role of Ac-DBD generated heat in the activation of the ***,the degradation pathway and mechanism of toluene in the DBD-Tcc system were *** work is expected to provide an energy-efficient approach for high-frequency Ac-DBD plasma removal of VOcs.

关键词： high-frequency alternating-current power thermal effect dielectric barrier discharge toluene degradation co.SBA-15 catalysts

Recent process in developing advanced heterogeneous diatomic-site metal catalysts for electrochemical co.(2)reduction

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chinese chemical Letters 2024年第7期35卷 4-13页

作者： Xueyang Zhao Bangwei Deng Hongtao Xie Yizhao Li Qingqing Ye Fan Dong Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731China suzhou Industrial technology Research Institute of Zhejiang University Zhejiang UniversitySuzhou 215159China

Diatomic-site catalysts(DAScs)have emerged as a kind of promising heterogeneous candidate catalysts for electrochemical co.(2)reduction(EcR),which is co.sidered to retain the advantage of single-atom catalysts(SAcs)but also introduce opportunities to exceed the limit of single-atom *** the past few years,tremendous progress has been achieved in this ***,the recent progress in EcR on DAScs has been *** will start with the classification of *** the challenges in the precise fabrication and characterization of DAScs have been *** introducing the advanced EcR performance on DAScs,superior to that on SAcs,the synergistic effects of the dual metal atoms are highlighted,as this origin of the advanced EcR performance on DAScs is co.prehensively ***,the major challenges and perspectives of DAScs have been proposed to shed light on the development of DAScs for EcR application.

关键词： Diatomic-site metal catalyst Electrochemical co.(2)reduction classification co.(2)activation Synergistic effects

Indium-based electrocatalysts for co.(2) reduction to c1 products

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chinese chemical Letters 2024年第6期35卷 134-145页

作者： Qin cheng Ming Huang Qingqing Ye Bangwei Deng Fan Dong Research center for carbon-Neutral Environmental&Energy technology Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 611731China Yangtze Delta Region Institute(Huzhou)&Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaHuzhou 313000China suzhou Industrial technology Research Institute of Zhejiang University Suzhou 215163China

Electrocatalytic co.(2) reduction at mild co.ditions is a promising strategy to transform greenhouse gases into fuels or value-added chemicals to solve the increasingly serious environmental and energy *** most crucial factor in determining the co.(2) reduction performance is to develop efficient electrocatalysts with high selectivity and *** the various electrocatalysts,indium-based catalysts have attracted extensive attention due to their non-toxicity,low co.t,and high formic acid/formate *** this work,we co.prehensively review the recent development and research progress of indium-based electrocatalysts for co.(2)*** reaction mechanism,reaction pathways,structure-activity relationship,and strategies to enhance the activity of co.(2)RR on indium-based catalysts have also been briefly presented and ***,the existing challenges and future developments for indium-based highperformance catalysts for co.(2)RR are proposed.

关键词： Electrocatalytic co.(2) reduction In-based catalysts Formate Reaction mechanism Structure-activity relationship

Textured Asymmetric Membrane Electrode Assemblies of Piezoelectric Phosphorene and Ti_(3)c_(2)T_(x)MXene Heterostructures for Enhanced Electrochemical Stability and Kinetics in LIBs

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Nano-Micro Letters 2024年第4期16卷 394-414页

作者： Yihui Li Juan Xie Ruofei Wang Shugang Min Zewen Xu Yangjian Ding Pengcheng Su Xingmin Zhang Liyu Wei Jing‑Feng Li Zhaoqiang chu Jingyu Sun cheng Huang Volta and DiPole Materials Labs College of EnergySoochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceKey Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical IndustrySoochow UniversitySuzhou 215006People’s Republic of China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China co.lege of Underwater Aco.stic Engineering Harbin Engineering UniversityHarbin 150001People’s Republic of China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204People’s Republic of China State Key Laboratory of New ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China High Density Materials technology center for Flexible Hybrid Electronics Suzhou Institute of Electronic Functional Materials TechnologySuzhou Industrial Technology Research InstituteSuzhou 215151People’s Republic of China Institute of Advanced Materials and Institute of Membrane Science and technology Jiangsu National Synergistic Innovation Center for Advanced MaterialsSuzhou Laboratory and Nanjing Tech UniversityNanjing 211816People’s Republic of China

Black phosphorus with a superior theoretical capacity(2596 mAh g^(-1))and high co.ductivity is regarded as one of the powerful candidates for lithium-ion battery(LIB)anode materials,whereas the severe volume expansion and sluggish kinetics still impede its applications in *** co.trast,the exfoliated two-dimensional phosphorene owns negligible volume variation,and its intrinsic piezoelectricity is co.sidered to be beneficial to the Li-ion transfer kinetics,while its positive influence has not been discussed ***,a phosphorene/MXene heterostructure-textured nanopiezoco.posite is proposed with even phosphorene distribution and enhanced piezo-electrochemical co.pling as an applicable free-standing asymmetric membrane electrode beyond the skin effect for enhanced Li-ion *** experimental and simulation analysis reveals that the embedded phosphorene nanosheets not only provide abundant active sites for Li-ions,but also endow the nanoco.posite with favorable piezoelectricity,thus promoting the Li-ion transfer kinetics by generating the piezoelectric field serving as an extra *** waltzing with the MXene framework,the optimized electrode exhibits enhanced kinetics and stability,achieving stable cycling performances for 1,000 cycles at 2 A g^(-1),and delivering a high reversible capacity of 524 m Ah g^(-1)at-20℃,indicating the positive influence of the structural merits of self-assembled nanopiezoco.posites on promoting stability and kinetics.

关键词： Phosphorene Nanopiezoco.posite Piezo-electrochemical co.pling Membrane electrode assembly Lithium-ion storage