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Journal of Clinical and Nursing Research 2024年第5期8卷 145-149页

作者： Rongfeng An juntao lu Jingzhong Liu Fang Yan Chinese People’s Liberation Army Joint Logistics Force 944th Hospital Jiuquan 735000Gansu ProvinceChina

Objective:To analyze the value of multi-slice spiral computed tomography(CT)and magnetic resonance imaging(MRI)in the diagnosis of carpal joint ***:A total of 130 patients with suspected wrist injuries admitted to the Department of Orthopedics of our hospital from January 2023 to January 2024 were selected and randomly divided into a single group(n=65)and a joint group(n=65).The single group was diagnosed using multi-slice spiral CT,and the joint group was diagnosed using multi-slice spiral CT and magnetic resonance imaging,with pathological diagnosis as the gold *** diagnostic results of both groups were compared to the gold standard,and the diagnostic energy efficiency of both groups was ***:The diagnostic results of the single group compared with the gold standard were significant(P0.05).The sensitivity and accuracy of diagnosis in the joint group were significantly higher than that in the single group(P0.05).Conclusion:The combination of multi-slice spiral CT and MRI was highly accurate in diagnosing wrist injuries,and the misdiagnosis rate and leakage rate were relatively ***,this diagnostic program is recommended to be popularized.

关键词： Multi-slice CT Magnetic resonance imaging Carpal joint injury Joint diagnosis

介孔碳载体缓解碱性聚电解质燃料电池阳极水淹

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Chinese Journal of Catalysis 2024年第2期57卷 51-58页

作者：江文涌葛创新王功伟陆君涛肖丽庄林武汉大学化学与分子科学学院化学电源材料与技术湖北省重点实验室湖北武汉430072 武汉大学索维奇分子科学中心湖北武汉430072 武汉大学高等研究院湖北武汉430072

碱性聚电解质燃料电池(APEFCs)相较于目前研究最多的质子交换膜燃料电池(PEMFCs),其优势体现在阴/阳两极均可使用价格低廉的非贵金属催化剂,有望降低燃料电池的使用成本.APEFCs的研究在过去20年飞速发展,主要集中在高效碱性聚电解质(APE... 详细信息

碱性聚电解质燃料电池(APEFCs)相较于目前研究最多的质子交换膜燃料电池(PEMFCs),其优势体现在阴/阳两极均可使用价格低廉的非贵金属催化剂,有望降低燃料电池的使用成本.APEFCs的研究在过去20年飞速发展,主要集中在高效碱性聚电解质(APE)隔膜和阴/阳极催化剂等关键材料的研发.目前,APEFCs的性能已接近于PEMFCs,针对其研究也逐渐从关键材料的研发扩展到电池的稳定性和水管理等更深层次问题.相较于PEMFCs,APEFCs的水管理问题更为复杂.每当阳极产生4个水分子,阴极会消耗2个水分子,容易导致阴极缺水和阳极水淹,进而影响电池的性能和稳定性.对APEFCs水管理的优化将是实现电池性能和稳定性突破的重要方向.本文主要研究碳载体对APEFCs水管理的影响,合成了一系列介孔碳负载的Ru催化剂(Ru/MCP-x,x为MCP的孔径,x=30,50,100 nm),并以Ru/XC72催化剂为对照.扫描电镜和N2吸附-脱附结果表明,介孔碳载体具有三维贯通的孔结构,而XC72为实心碳颗粒.溶液电化学测试结果表明,不同催化剂在0.1 mol/L的KOH溶液中的氢氧化反应(HOR)活性相当.以Ru/MCP-x和Ru/XC72为阳极催化剂进行电池装配(记为Ru/MCP-x电池和Ru/XC72电池),结果表明,当使用高进气流量(1000 mL/min)时,Ru/MCP-x电池和Ru/XC72电池性能接近;当使用更接近实际工况的低进气流量(200 mL/min)时,所有电池性能均有所下降,且降幅存在明显差距.其中,Ru/MCP-50电池和Ru/MCP-100电池的降幅分别为36%和35%,而Ru/MCP-30电池和Ru/XC72电池的降幅分别为43%和72%.通过在低进气流量下改变进气湿度,结果发现,Ru/MCP-30电池和Ru/XC72电池性能大幅下降的原因是阳极发生水淹.弛豫时间分布(DRT)方法可以将不同弛豫时间的极化过程在时域中分离开来,从而可以分辨各极化过程对电池性能的影响.利用电化学交流阻抗(EIS)技术结合DRT方法进一步分析各电池在不同电流密度下的阻抗行为,DRT结果表明,在低进气流量下Ru/XC72电池的传质极化电阻显著高于Ru/MCP-x电池,说明阳极水淹导致了Ru/XC72电池的气体传质受阻,因而电池性能大幅下降.当MCP孔径增加至50和100 nm时,传质极化电阻在不同电流密度下始终处于较低水平,电池未发生明显水淹.这说明孔径的增加有效地缓解了低进气流量下阳极的水淹问题,从而保持较高的电池性能.综上,本文利用EIS-DRT方法比较了不同阳极碳载体对APEFCs性能和气体传质极化电阻的影响,表明介孔碳载体有利于缓解APEFCs中的阳极水淹问题,具有作为阳极载体的潜力.

关键词：钌介孔碳碱性聚电解质燃料电池水淹弛豫时间分布

Alkaline polymer electrolyte fuel cells: Principle, challenges, and recent progress

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Science China Chemistry 2010年第2期53卷 357-364页

作者： TANG DaoPing PAN Jing lu ShanFu ZHUANG Lin lu juntao Hubei Key Lab of Electrochemical Power Sources College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China

Polymer electrolyte membrane fuel cells (PEMFC) have been recognized as a significant power source in future energy systems based on hydrogen. The current PEMFC technology features the employment of acidic polymer electrolytes which, albeit superior to electrolyte solutions, have intrinsically limited the catalysts to noble metals, fundamentally preventing PEMFC from widespread deployment. An effective solution to this problem is to develop fuel cells based on alkaline polymer electrolytes (APEFC), which not only enable the use of non-precious metal catalysts but also avoid the carbonate-precipitate issue which has been troubling the conventional alkaline fuel cells (AFC). This feature article introduces the principle of APEFC, the challenges, and our research progress, and focuses on strategies for developing key materials, including high-performance alkaline polyelectrolytes and stable non-precious metal catalysts. For alkaline polymer electrolytes, high ionic conductivity and satisfactory mechanical property are difficult to be balanced, therefore polymer cross-linking is an ultimate strategy. For non-precious metal catalysts, it is urgent to improve the catalytic activity and stability. New materials, such as transition-metal complexes, nitrogen-doped carbon nanotubes, and metal carbides, would become applicable in APEFC.

关键词： fuel cells polymer electrolyte anion exchange membrane catalyst non-precious metal

Ni(OH)_2-Ni/C for hydrogen oxidation reaction in alkaline media

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Journal of Energy Chemistry 2019年第2期28卷 111-115页

作者： Yangxin Pan Gaohe Hu juntao lu Li Xiao Lin Zhuang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan University

The development of the hydrogen electrode is vital for the application of alkaline polymer electrolyte fuel cells(APEFCs).In this study,a series of Ni(OH)_2 decorated Ni/C catalysts(Ni(OH)_2-Ni/C) were prepared by a three-step electrochemical treatment of Ni/*** existence of Ni(OH)_2 was demonstrated by X-ray photoelectron spectroscopy(XPS),and the surface molar ratio of Ni(OH)_2/Ni of the samples was estimated via an electrochemical *** HOR catalytic activity of the catalysts was evaluated by a rotation disk electrode(RDE) method,and a "volcano plot" was established between the HOR exchange current(j0) and the surface molar ratio of Ni(OH)_2/*** top of the "volcano",the surface molar ratio of Ni(OH)_2/Ni is1.1:1,the j0 of which was 6.8 times of that of Ni/*** stability of the samples toward HOR was evaluated to be *** study added a systematic experimental evidence to the HOR research,showing that the HOR catalytic activity of Ni can be deliberately controlled via decoration of Ni(OH)_2,which may help understanding the HOR mechanism on Ni.

关键词： Hydrogen oxidation reaction Fuel cells Alkaline polymer electrolyte fuel cells Nickel Volcano plot

Regulation of the activity,selectivity,and durability of Cu-based electrocatalysts for CO_(2) reduction

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Science China Chemistry 2021年第10期64卷 1660-1678页

作者： Chang Liu Jun Gong Zeyu Gao Li Xiao Gongwei Wang juntao lu Lin Zhuang College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan UniversityWuhan 430072China The Institute for Advanced Studies Wuhan UniversityWuhan 430072China

CO_(2)electroreduction offers a promising approach to alleviate global warming and reduce petroleum consumption simultaneously,due to its capability to convert the greenhouse gas CO_(2)to valuable fuels and chemicals by using renewable *** has an essential impact on the CO_(2)electroreduction *** the diverse exploited materials,Cu is the only monometallic electrocatalyst that can produce CO and ***,its activity,selectivity,and durability are not satisfactory for practical ***,we make a comprehensive survey of the recent progress in enhancing Cu-based electrocatalysts with the strategies such as oxidation pre-treatment,heteroatom doping,morphological control,and surface *** review provides an overview of the current status and future opportunities for Cu-catalyzed CO_(2)*** may contribute to the rational design of Cu-based electrocatalysts with improved performance and thus advance practical CO_(2)electrolyzer development.

关键词： CO_(2)electroreduction Cu-based catalysts activity selectivity durability

Improving the Catalytic Efficiency of NiFe-LDH/ATO by Air Plasma Treatment for Oxygen Evolution Reaction

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Chemical Research in Chinese Universities 2021年第2期37卷 293-297页

作者： LEI Chong LI Wenzheng WANG Gongwei ZHUANG Lin lu juntao XIAO Li College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan UniversityWuhan430072P.R.China Institute for Advanced Studies Wuhan UniversityWuhan430072P.R.China

Developing efficient catalysts toward the oxygen evolution reaction(OER)is important for water splitting and rechargeable metal-air *** NiFe oxides are considered as potentially applicable catalysts in the alkaline media,there are still a limited numbers of researches working on membrane electrode assembly(MEA)fed with pure water due to their poor electrical *** this work,antimony doped tin oxide(ATO)has been employed as conductive supports where NiFe layered double hydroxide uniformly dispersed[named NiFe-LDH(layered double hydroxide)/ATO].The catalysts have been synthesized by a one-step co-precipitation method,and then NiFe-LDH/ATO-air plasma was obtained through mild air plasma *** to XPS analysis,binding energies of Ni2p and Fe2p were shifted ***,a new signal of low oxygen coordination appeared on O1s spectrum after air plasma *** XPS results indicated that oxygen vacancies(Ov)were generated after air plasma *** measurement indicated that the vacancy-rich NiFe-LDH/ATO-air plasma exhibited better performance than NiFe-LDH/ATO not only in 1 mol/L KOH solutions but also in an alkaline polymer electrolyte water electrolyzer(APEWE)fed with deionized *** work provides a feasible way to design practical catalysts used in electrochemical energy conversion systems by choosing corrosion resistance supports and defect engineering.

关键词： Antimony doped tin oxide(ATO) Air plasma Oxygen vacancy Alkaline polymer electrolyte water electrolyzer(APEWE)

A novel on-line electrochemical transmission infrared spectroscopy to study the current efficiency of carbonates for ethanol oxidation reactions in alkaline media

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Journal of Energy Chemistry 2019年第11期28卷 78-83页

作者： Wei Peng Li Xiao juntao lu Lin Zhuang Hubei Key Lab of Electrochemical Power Sources College of Chemistry and Molecular Sciences Wuhan University

Research on the reaction mechanism of ethanol oxidation reaction(EOR) is important for the development of highly active EOR electro-catalysts. One of the main difficulties in the EOR study is the quantitative analysis of the non-volatile products. Conventional on-line electrochemical flowing transmission infrared spectroscopy(ETIRS) can only collect a part of the carbonate products of EOR in alkaline media, making the further quantitative study impossible. Herein, a new ETIRS system has been designed and prepared by employing a cation-exchange membrane(Nafion) in the sampling hood. The using of the Nafion membrane can prevent the anions crossing over by confining the generated carbonates in the sampling hood without diffusing into the bulk electrolyte. Therefore, the collection efficiency of the carbonate products as well as the test accuracy of the carbonate current efficiency has been significantly improved. The result of CO stripping reaction shows that ca. 100% of the carbonate product is able to be collected in alkaline media by this new system. The influence of the experimental temperature to the carbonate current efficiency has been further studied on Pt/C toward EOR in alkaline media.

关键词： Ethanol oxidation reaction Transmission infrared spectroscopy Platinum Alkaline media

Ordovician reservoirs in Fuxian area:Gas accumulation patterns and their implications for the exploration of lower Paleozoic carbonates in the southern Ordos Basin

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Energy Geoscience 2024年第1期5卷 63-71页

作者： Ning Gu juntao Zhang Xiaohui Jin Fei Yang lu Liu Petroleum Exploration and Production Research Institute SINOPECBeijing102206China Huabei Oil&Gas Branch SINOPECZhengzhouHenan450000China

In recent years,the Fuxian area in the southeastern Ordos Basin has undergone significant exploration,with industrial gas flow tested in wells drilled into the Ordovician marine *** this,the gas accumulation patterns of this area are not fully understood,posing challenges for further *** analysis of geological conditions indicates that the Ordovician Majiagou Formation in this area hosts two gas plays:one found in weathering crusts and the other found in interior of the *** investigated various typical gas reservoirs in the area,focusing on differentiating the geological conditions and factors controlling gas accumulation in the weathering-crust and interior gas *** results suggest three primary gas accumulation patterns in the Majiagou Formation in the Fuxian area:(1)upper gas accumulation in weathering crusts,present in the high parts of landforms such as residual paleo-hills or buried paleo-platform(Pattern I);(2)the stereoscopic pattern with gas accumulation in both weathering crusts and strata interior,arising in high parts of landforms such as residual paleo-hills or buried paleo-platforms(Pattern II);(3)lower gas accumulation in strata interior,occurring in the upper reaches and on both sides of paleo-trenches(Pattern III).This study will serve as a geological basis for future exploration deployment in the Fuxian area.

关键词： Gas accumulation Ordovician Weathering crust play Interior play Fuxian area The ordos basin

Water induced phase segregation in hydrocarbon proton exchange membranes

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Journal of Energy Chemistry 2018年第6期27卷 1517-1520页

作者： Kangjie Lyu Yanqiu Peng Li Xiao juntao lu Lin Zhuang College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power Sources Wuhan University Wuhan 430072 Hubei China Institute for Advanced Studies Wuhan University Wuhan 430072 Hubei China

Proton exchange membranes （PEMs） are a key material for proton exchange membrane fuel cells （PEM-FCs）, Non-fluorinated hydrocarbon PEMs are low-cost alternatives to Nation, but limited by the low pro-ton conductivity, because of the weak phase segregation structure and narrow ion-transport *** efforts have been taken to improve the performance of hydrocarbon PEMs, but mostly with com-plex methodologies. Here we demonstrate a simple, yet very efficient method to create phase segrega-tion structure inside a typical hydrocarbon PEM, sulfonated poly（ether ether ketone）（SPEEK）. By sim-ply adding appropriate amounts of water into the DMF solvent, the resulting SPEEK membrane exhibitswidened ion-transport channels, with the phase size of 2.7 nm, as indicated by both molecular dynamic（MD） simulations and transmission electron microscope （TEM） observations, and the proton conductivityis thus improved by 200%. These findings not only further our fundamental understanding of hydrocarbonPEMs, but are also valuable to the development of low-cost and practical fuel cell technologies.

关键词： Proton exchange membrane Phase segregation Proton conductivity Molecular dynamics simulation Sulfonated poly(ether ether ketonel

Intermetallic Pt_2Si:magnetron-sputtering preparation and electrocatalysis toward ethanol oxidation

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Journal of Energy Chemistry 2014年第3期23卷 265-268页

作者： Zhong Ren Li Xiao Gongwei Wang juntao lu Lin Zhuang College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan University

Although most transition metals have been tested as the promoter to Pt for electrocatalysis toward fuel cell reactions,semi-conductor elements,such as Si,have hitherto not been *** we report a simple synthesis of intermetallic Pt2Si electrode using magnetron sputtering and the electrocatalysis toward ethanol oxidation reaction（EOR）.In comparison to Pt,the intermetallic Pt2Si surface turns out to be much more active in catalyzing the EOR：the onset potential shifts negatively by 150 mV,and the current density at 0.6 V increases by a magnitude of one *** an enormous enhancement in EOR catalysis is ascribed to the promotion effects of Si,which can not only provide active surface oxygenated species to accelerate the removal of COads,but also strongly alter the electronic property of Pt,as clearly indicated by the core-level shift in XPS spectrum.

关键词： Pt2Si intermetallic compound magnetron sputtering electrocatalysis ethanol oxidation