检索结果-南通市图书馆

Green Energy & Environment 2025年第1期10卷 150-160页

作者： chunmei tang Ning Wang Sho Kitano Hiroki Habazaki Yoshitaka Aoki Siyu Ye Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityNo.230 Wai Huan Xi RoadGuangzhou510006China Graduate School of Chemical Sciences and Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan Faculty of Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan

Protonic solid oxide electrolysis cells(P-SOECs)are a promising technology for water electrolysis to produce green ***,there are still challenges related key materials and anode/electrolyte interface.P-SOECs with Zr-rich electrolyte,called Zr-rich side P-SOECs,possess high thermodynamically stability under high steam concentrations but the large reaction resistances and the current leakage,thus the inferior *** this study,an efficient functional interlayer Ba_(0.95)La_(0.05)Fe_(0.8)Zn_(0.2)O_(3-δ)(BLFZ)in-between the anode and the electrolyte is *** electrochemical performances of P-SOECs are greatly enhanced because the BLFZ can greatly increase the interface contact,boost anode reaction kinetics,and increase proton injection into *** a result,the P-SOEC yields high current density of 0.83 A cm^(-2) at 600℃ in 1.3 Vamong all the reported Zr-rich side *** work not only offers an efficient functional interlayer for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability.

关键词： Functional interlayer Zr-rich side electrolyte Protonic solid oxide electrolysis cells Current density Faradaic efficiency

Remarkable-cycle-performanceβ-bismuthene/graphene heterostructure anode for Li-ion battery

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第8期33卷 3802-3808页

作者： Shouzheng Wang chunmei tang Yu Huang Jiangfeng Gong College of Science Hohai UniversityNanjing 210098China

Remarkable Li-ion battery(LIB)anode materials need to have long cycle life and fast charge/discharge rate,however they are difficult to be realized in the monolayer anode *** monolayerβ-Bi has the stiffness of only 33.0 N/m,thus the Bi/G heterostructure is proposed to improve the electronic and mechanical properties and to produce better LIB anode performance in this *** calculated results show that Bi/G heterostructure has excellent thermodynamic,dynamical and mechanical *** band gap is only 0.04 eV,which ensures remarkable electrical *** addition,the Bi/G heterostructure has higher stiffness(369.2 N/m)than that of monolayerβ-Bi and *** diffusion barrier(E_(barrier)) of 0.32 e V and volume expansion ratio(VER)of only 4%can ensure the rapid transport of Li^(+) ions in the charge/discharge cycling process and long life of the *** calculated theoretical results for describing the detail properties of Li storage and diffusion in the Bi/G heterostructure can supply adequate conclusive evidence for the prediction of remarkable properties of Bi/G heterostructure as an anode material for LIBs.

关键词： Anode material Li-ion battery Bismuthene Graphene Heterostructure First-principles calculation

Preparation and thermoelectric properties of Cu1.8S/CuSbS2 composites

在线全文

学校读者我要写书评

暂无评论

Journal of Advanced Ceramics 2019年第2期8卷 209-217页

作者： chunmei tang Doudou LIANG Hezhang LI Kun LUO Boping ZHANG Beijing Municipal Key Laboratory of New Energy Materials and Technologies School of Materials Science and Engineering University of Science and Technology Beijing

Chalcostibite(CuSbS2)is composed of earth-abundant elements and has a proper band gap(Eg=1.05 eV)as a thermoelectric(TE)***,we report the TE properties in the CuSbS2 based composites with a mole ratio of(1–x)CuSbS2–x Cu1.8S(x=0,0.1,0.2,0.3),which were prepared by mechanical alloying(MA)combined with spark plasma sintering(SPS).X-ray diffraction(XRD)and back-scattered electron image(BSE)results indicate that a single phase of CuSbS2 is synthesized at x=0 and the samples consist of CuSbS2,Cu3SbS4,and Cu12Sb4S13 at 0.1≤x≤*** correlation between the phase structure,microstructure,and TE transport properties of the bulk samples is *** electrical conductivity increases from 0.14 to 50.66 S·cm–1 at 723 K and at0≤x≤0.03,while the Seebeck coefficient holds an appropriate value of 190.51μV·K–*** highest ZT value of 0.17 is obtained at 723 K and at x=0.3 owing to the combination of a high PF183μW·m–1·K–2 and a lowκ0.8 W·m–1·K–1.

关键词： CuSbS2 phase structure ZT thermoelectric

Density functional calculations of efficient H_2 separation from impurity gases(H_2,N_2,H_2O,CO,Cl_2, and CH_4)via bilayer g-C_3N_4 membrane

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第4期28卷 362-369页

作者： chunmei tang Xinbo Wang Cheng Wang Ling Fu College of Science Hohai University College of Agricultural Engineering Nanyang Normal University Henan Key Laboratory of Ecological Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province

Membrane technology has been used for H_2 purification. In this paper, the systematic density functional simulations are conducted to study the separation of H_2 from the impurity gases(H_2, N_2, H_2 O, CO, Cl_2, and CH_4) by the bilayer porous graphitic carbon nitride(g-C_3 N_4) membrane. Theoretically, the bilayer g-C3 N4 membrane with a diameter of about3.25 A? should be a perfect candidate for H_2 purification from these mixed gases, which is verified by the high selectivity(S) for H_2 over other kinds of gases(3.43 × 1028 for H_2/N2; 1.40 × 1028 for H_262/H_2 O; 1.60 × 10 for H_2/CO; 4.30 × 10^(14) for H_2/Cl_2; 2.50 × 10^(55) for H_2/CH_4), and the permeance(P) of H_2(13 mol/m^2·s·Pa) across the bilayer g-C_3 N_4 membrane at 300 K, which should be of great potential in energy and environmental research. Our studies highlight a new approach towards the final goal of high P and high S molecular-sieving membranes used in simple structural engineering.

关键词： g-C3N4 gas separation density functional molecular dynamics simulation

Zircon U-Pb age and Hf isotope of Quanyishang A-type granite in Yichang: Signification for the Yangtze continental cratonization in Paleoproterozoic

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2009年第3期54卷 436-446页

作者： XIONG Qing HENG JianPing YU chunmei SU YuPing tang HuaYun ZHANG ZhiHai State Key Laboratory of Geological Processes and Mineral Resources Faculty of Earth Sciences China University of GeosciencesWuhan 430074 China

Zircon U-Pb age and Hf isotope, and major and trace element compositions were reported for granite at Quanyishang, which intruded into the Kongling complex in Yichang, Hubei Province. The results show that the Quanyishang granite is rich in silicon and alkalis but poor in calcium and magnesium, and displays enrichment in Ga, Y, Zr, Nb but depletion in Sr and Ba, exhibiting the post-orogenic A-type affinity. 90% zircons from the granite are concordant, and give a middle Paleoproterozoic magmatic crystallization age (mean 1854 Ma). Initial Hf isotope ratios (176Hf/177Hf)i of the middle Paleoproterozoic zircons range from 0.280863 to 0.281134 and they have negative εHf(t) values with a minimum of -26.3. These zircons give the depleted mantle model ages (TDM) of 2.9―3.3 Ga (mean 3.0 Ga), and the average crustal model ages (Tcrust) of 3.6―4.2 Ga (mean 3.8 Ga). A Mesoarchean grain with 207Pb/206Pb age of 2859 Ma has a slightly high TDM (3.4 Ga) but similar Tcrust (3.8 Ga) to the Paleoproterozoic zircons. All these data suggest that the source materials of the Quanyishang A-type granite are unusually old, at least ≥2.9 Ga (even Eoarchean). The event of crustal remelting, which resulted in the formation of the Quanyishang granite in the middle Paleoproterozoic, recorded the cratonization of the Yangtze conti- nent. The process may have relation to the extension and collapse of the deep crust with Archean ages, in response to the transition stage of the assembly and breakup of the Columbia supercontinent.

关键词：花岗岩锆石同位素长江流域

Synthesis of nickel selenide thin films for high performance all-solid-state asymmetric supercapacitors

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第9期31卷 2275-2279页

作者： Hao Li Jiangfeng Gong Jing-Chang Li Xincheng Zhang chunmei tang Hongbing Yao Qingping Ding College of Science Hohai UniversityNanjing 210098China Ames Laboratory US DOEAmesIA 50011United States

As a significant semiconductor,nickel selenide shows enormous potential and extensive application pro spects in the field of sensor,photocatalysis and supercapacito *** this paper,nickel selenide(Ni3Se2,NiSe) thin films were successfully fabricated on stainless-steel sheet using a facile,effective electrodeposition *** morphologies,microstructures and chemical compositions of the thin films are characterized *** tests exhibit that the Ni3Se2 and NiSe possess high specific capacitance of 581.1 F/g and 1644.7 F/g,respectively.A flexible,all-solid-state asymmetric supercapacitor is assembled by utilizing NiSe film as positive electrode and activated carbon as negative *** solid device delivers a high areal capacitance of 27.0 mF/cm2 at the current density of 0.7 mA/*** maximum volumetric energy density and powerdensity of the NiSe//AC asymmetric SCs can achieve 0.26 mWh/cm3 and 33.35 mW/cm3,*** device shows robust cycling stability with 84.6% capacitance retention after 10,000 cycles,outstanding flexibility and satis factory mechanical ***,two devices in series can light up a red light-emitting diode,which displayed great potential applications for energy storage.

关键词： Nickel selenide Electrochemical properties Asymmetric All-solid-state Supercapacitors

Green hydrogen production by intermediate-temperature protonic solid oxide electrolysis cells:Advances,challenges,and perspectives

在线全文

学校读者我要写书评

暂无评论

InfoMat 2024年第3期6卷 22-65页

作者： chunmei tang Yao Yao Ning Wang Xiaohan Zhang Fangyuan Zheng Lei Du Dongxiang Luo Yoshitaka Aoki Siyu Ye Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhouthe People's Republic of China Beijing Institute of Metrology Beijingthe People's republic of China Faculty of Engineering Hokkaido UniversitySapporoJapan

Protonic solid oxide electrolysis cells(P-SOECs)operating at intermediate temperatures,which have low costs,low environmental impact,and high theoretical electrolysis efficiency,are considered promising next-generation energy conversion devices for green hydrogen ***,the developments and applications of P-SOECs are restricted by numerous material-and interface-related issues,including carrier mismatch between the anode and electrolyte,current leakage in the electrolyte,poor interfacial contact,and chemical *** the past few decades,considerable attempts have been made to address these issues by improving the properties of *** review comprehensively explores the recent advances in the mechanisms governing steam electrolysis in P-SOECs,optimization strategies,specially designed components,electrochemical performance,and *** particular,given that the lack of suitable anode materials has significantly impeded P-SOEC development,the relationships between the transferred carriers and the cell performance,reaction models,and surface decoration approaches are meticulously ***,the challenges hindering P-SOEC development are discussed and recommendations for future research directions,including theoretical calculations and simulations,structural modification approaches,and large-scale single-cell fabrication,are proposed to stimulate research on P-SOECs and thereby realize efficient electricity-to-hydrogen conversion.

关键词： designed components electrochemical performance hydrogen production key materials protonic solid oxide electrolysis cells

Single-phase La_(0.8)Sr_(0.2)Co_(1-x)Mn_(x)O_(3-δ) electrocatalyst as a triple H^(+)/O^(2-)/e^(-) conductor enabling high-performance intermediate-temperature water electrolysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materiomics 2022年第5期8卷 1020-1030页

作者： Ning Wang chunmei tang Lei Du Zhao-Qing Liu Weiyan Li Zhongqian Song Yoshitaka Aoki Siyu Ye Huangpu Hydrogen Innovation Center/Guangzhou Key Laboratory for Clean Energy and Materials School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006China Graduate School of Chemical Sciences and Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan Faculty of Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan

Hydrogen,especially the“green hydrogen”based on water electrolysis,is of great importance to build a sustainable society due to its high-energy-density,zero-carbon-emission features,and wide-range ***'s water electrolysis is usually carried out in either low-temperature(700℃)applications,e.g.,solid oxide ***,the low-temperature devices usually suffer from high applied voltages(usually>1.5 V@0.01 A cm^(-2))and high cost;meanwhile,the high-temperature ones have an unsatisfied lifetime partially due to the incompatibility among ***,an intermediate-temperature device,namely,proton ceramic cell(PCC),has been recently *** widely-used air electrode for PCC is based on double O^(2-)/e^(-)conductor or composited O^(2-)/e^(-)-H^(+)conductor,limiting the accessible reaction ***,we designed a single-phase La_(0.8)Sr_(0.2)Co_(1-x)Mn_(x)O_(3-δ)(LSCM)with triple H^(+)/O^(2-)/e^(-)conductivity as the air electrode for ***,the La_(0.8)Sr_(0.2)Co_(0.8)Mn_(0.2)O_(3-δ)(LSCM8282)incorporates 5.8%proton carriers in molar fraction at 400℃,indicating superior proton conducting ***,a high current density of 1580 mA cm^(-2) for hydrogen production(water electrolysis)is achieved at 1.3 V and 650℃,surpassing most low-and high-temperature devices reported so ***,such a PCC can also be operated under a reversible fuel cell mode,with a peak power density of 521 mW cm^(-2) at 650℃.By correlating the electrochemical performances with the hydrated proton concentration of single-phase triple conducting air electrodes in this work and our previous work,a principle for rational design of high-performance PCCs is proposed.

关键词： Electrolyzer Intermediate-temperature water electrolysis Triple conductor Hydration reaction Fuel cell

Efficient Photolytic Halogenation and Oxidation of Unactivated Alkyl sp^(3) C—H Bonds with Iodine(III)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2024年第5期42卷 505-510页

作者： Hao Jia Nan Li chunmei tang Yajuan Wang Yonghao Xi Rongbao Liao Wei Xu Fufang Wu Xiaobao Shen Hongbin Zhai Biomass Oligosaccharides Engineering Technology Research Center of Anhui Province Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational InstitutionsFuyang Normal UniversityFuyangAnhui236037 China Institute of Marine Biomedicine Shenzhen PolytechnicShenzhenGuangdong518055 China State Key Laboratory of Chemical Oncogenomics Shenzhen Engineering Laboratory of Nano Drug Slow-ReleasePeking University Shenzhen Graduate SchoolShenzhenGuangdong518055 China

A metal-free,green,and sustainable functionalization of unactivated alkyl sp^(3) C—H bonds is reported using iodine(III)as a feasible dehydrogenation agent under visible light or KBr,and alkyl chlorides,bromides,alcohols,and ketones could be constructed by addition of different coupling *** and safe iodobenzene diacetate was used to form a radical to activate the alkyl sp^(3) C—H bond in a highly efficient manner,which can construct different alkylation products by adding corresponding coupling reagents.

关键词： Alkyl sp^(3)C—H bonds Chlorination Bromination Oxidation Iodine(III) C—H activation Radical Photocatalysis

Advanced 2D molybdenum disulfide for green hydrogen production: Recent progress and future perspectives

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第3期18卷 308-329页

作者： Meng FANG Yuqin PENG Puwei WU Huan WANG Lixin XING Ning WANG chunmei tang Ling MENG Yuekuan ZHOU Lei DU Siyu YE Huangpu Hydrogen Energy Innovation Centre School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China Sustainable Energy and Environment Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong KongChina SinoHykey Technology Company Ltd. Guangzhou 510760China

The development of renewable and affordable energy is crucial for building a sustainable society. In this context, establishing a sustainable infrastructure for renewable energy requires the integration of energy storage, specifically use of renewable hydrogen. The hydrogen evolution reaction (HER) of electrochemical water splitting is a promising method for producing green hydrogen. Recently, two-dimensional nanomaterials have shown great promise in promoting the HER in terms of both fundamental research and practical applications due to their high specific surface areas and tunable electronic properties. Among them, molybdenum disulfide (MoS2), a non-noble metal catalyst, has emerged as a promising alternative to replace expensive platinum-based catalysts for the HER because MoS_(2)has a high inherent activity, low cost, and abundant reserves. At present, greatly improved activity and stability are urgently needed for MoS_(2)to enable wide deployment of water electrolysis devices. In this regard, efficient strategies for precisely modifying MoS_(2)are of interest. Herein, the progress made with MoS_(2)as an HER catalyst is reviewed, with a focus on modification strategies, including phase engineering, morphology design, defect engineering, heteroatom doping, and heterostructure construction. It is believed that these strategies will be helpful in designing and developing high-performance and low-cost MoS2-based catalysts by lowering the charge transfer barrier, increasing the active site density, and optimizing the surface hydrophilicity. In addition, the challenges of MoS_(2)electrocatalysts and perspectives for future research and development of these catalysts are discussed.

关键词： molybdenum disulfide(MoS_(2)) hydrogen evolution reaction(HER) active site electrocatalyst modification strategie