王宇新
主要从事聚合物膜燃料电池领域的研究和开发,包括新型质子导电膜制备、直接甲醇燃料电池、膜电极工艺、流场设计与优化、极板新材料、电池堆水热管理、燃料电池系统集成等。
个性化签名
- 姓名:王宇新
- 目前身份:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
化学工程基础学科
- 研究兴趣:主要从事聚合物膜燃料电池领域的研究和开发,包括新型质子导电膜制备、直接甲醇燃料电池、膜电极工艺、流场设计与优化、极板新材料、电池堆水热管理、燃料电池系统集成等。
王宇新,男,1960年7月出生。现工作于天津大学化学工程研究所,任教授及博士生导师。学士,1982, 天津大学 化工系 化工机械与设备专业硕士,1885, 天津大学 化学工程研究所,化学工程专业博士,1988 天津大学 化学工程研究所,化学工程专业现主要从事聚合物膜燃料电池领域的研究和开发,包括新型质子导电膜制备、直接甲醇燃料电池、膜电极工艺、流场设计与优化、极板新材料、电池堆水热管理、燃料电池系统集成等。其它研究经历涉及海水淡化、传递过程、蒸馏、膜分离、环境敏感性聚合物、天然聚合物加工、生物化学工程等。现任中国太阳能学会氢能专业委员会委员和中国海水淡化及水再利用学会蒸馏专业委员会委员,并为中国化工学会和中国膜工业协会会员。
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王宇新, LEI LI, JUN ZHANG, YUXIN WANG*
JOURNAL OF MATERIALS SCIENCE LETTERS 22, 2003, 1595-1597,-0001,():
-1年11月30日
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【期刊论文】Sulfonated poly (ether ether ketone) membranes for direct methanol fuel cell
王宇新, Lei Li a, b, Jun Zhang b, Yuxin Wang b, *
Journal of Membrane Science 226(2003)159-167,-0001,():
-1年11月30日
Sulfonated poly (ether ether ketone) (SPEEK) membranes with various degrees of sulfonation (DS) were prepared. Their proton conductivity and methanol permeability as a function of temperature were investigated. It was found that the proton conductivity of SPEEK membranes exceeded 10-2S/cm above 80℃, which is close to that of Nafion® 115 membrane under the same condition. The methanol permeability of SPEEK membranes was about an order of magnitude lower than that of Nafion® 115 membrane. The direct methanol fuel cell (DMFC) performance of the SPEEK membranes was better than that of Nafion® 115 membrane at 80℃
Poly (, ether ether ketone), (, PEEK), , Proton conductivity, Methanol permeability, Direct methanol fuel cell (, DMFC),
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【期刊论文】PRESSURE DEPENDENCE OF THE VOLUME PHASE-TRANSITION OF TEMPERATURE-SENSITIVE GELS
王宇新, XING ZHONG*, YU-XIN WANG, SHI-CHANG WANG
Chemical Engineerin 9 Science, Vol. 51, No. 12, pp. 3235-3239, 1996,-0001,():
-1年11月30日
The effect of hydrostatic pressure on the swelling of temperature-sensitive gels was studied by measuring the volume change of the beads of poly (N-isopropylacrylamide) gel, poly (N-n-propylacrylamide) gel, and poly (N, N-diethylacrylamide) gel under pressure up to 120atm. The excess enthalpy and the excess volume of the gel-water systems during the volume phase-transition of the gels were measured. These measurements are helpful in understanding that the pressure sensitivity of these gels originates from their temperature sensitivity and is the consequence of the increase of their LCST with pressure. An equation relating the LCST of the temperature-sensitive gel to the pressure was obtained through thermodynamical analysis. These efforts contribute to reveal the interdependence between the pressure sensitivity and the temperature sensitivity of hydrogel. Copyright.
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王宇新, Yuxin Wang, * Xing Zhong & Shichang Wang
J. Chem. Tech. Biotechnol. 1996, 67, 243-247,-0001,():
-1年11月30日
The enzymeβ-galactosidase was entrapped in poly (N-isopropylacrylamide) gel. The gel swelled or collapsed sharply upon the rise or fall of environmental pressure. The gel beads, prepared by reverse suspension polymerization, were placed in a stirred batch reactor filled with a solution of the substrate o-nitrophenol β-D-galactopyranoside. Operations under constant or cycling pressure were performed. A considerable increase in conversion rate was observed under pressure cycling operation, compared with isobaric operations at either atmospheric or high pressure. This result could be explained by the enhancement of mass transfer inside the gel beads during the pressure cycling operation.
enzyme immobilization,, mass transfer,, pressure-sensitive gel,, pressure-cycling,, β-galactosidase
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【期刊论文】Pervaporation membranes in direct methanol fuel cells
王宇新, Bryan S. Pivovar*, Yuxin Wang, E.L. Cussler
Journal of Membrane Science 154(1999)155-162,-0001,():
-1年11月30日
The membranes in direct methanol fuel cells must both conduct protons and serve as a barrier for methanol. Nafion, the most common fuel cell membrane, is an excellent conductor but a poor barrier. Polyvinyl alcohol pervaporation membranes are good methanol barriers but poor conductors. These and most other pervaporation membranes offer no significant advantages over Nafion in methanol fuel cell applications. However, polybenzimidazole membranes have demonstrated characteristics that suggest up to a 15-fold improvement in direct methanol fuel cells. This improvement may be due to an alternate form of proton conduction in which protons travel via a Grotthus or "hopping" mechanism.
Barrier membranes, Batteries, Solubility and partioning, Fuel cells
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【期刊论文】Novel proton conducting composite membranes for direct methanol fuel cell
王宇新, Lei Li, Li Xu, Yuxin Wang*
Materials Letters 57(2003)1406-1410,-0001,():
-1年11月30日
A novel composite membrane based on poly (vinyl alcohol) (PVA) with embedded phosphotungstic acid (PWA) were prepared and their proton conductivity and methanol permeability were studied. Infrared (IR) and UV spectrographic measurement indicates that the Keggin structure characteristic of the PW12O403- anion presents in the PVA membranes. Highest proton conductivity of 6.27
Composite membranes, PVA, Phosphotungstic acid, Conductivity, DMFC
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【期刊论文】Modeling the Effects of Methanol Crossover on the DMFC
王宇新, J. Zhang, Y. Wang*
FUEL CEUS 2004, 4, No. 1-2,-0001,():
-1年11月30日
A mathematic model is established to simulate the effects of methanol crossover on the DMPC. The transport and reactions of both oxygen and methanol at the cathode are described and the theory of "parallel electrode reactions" is applied to calculate the cathode over-potential caused by methanol crossover. The influence of methanol conentration, fuel cell temperature, oxygen pressure, and membrane properties on the cathode over-potential is evaluated. Simulation results show that methanol crossover considerably increases the cathode over-potential at low current density, but its effect is significantly reduced when the current density is increased to reasonable values. It also shows that of the two parameters characterizing a polymer electrolytemembrane, proton conductivity and methanol permeability, the former has more impact on the performance of a DMPC.
DMPC,, Methanol Crossover,, Mathematical Stmulation
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【期刊论文】Ion-Conducting Polymer Gels of Polyacrylamide Embedded with K2CO3
王宇新, Wensheng Song, Yuxin Wang, Huining Deng
Journal of Applied Polymer Science, Vol. 92, 2076-2081 (2004),-0001,():
-1年11月30日
A highly ionic conductive solid-gel membrane based on polyacrylamide hydrogels with a K2CO3 additive was investigated. The polymer-based gel was prepared by adding ionic species K2CO3 to a monomer solution followed by polymerization. After polymerization, the ionic species was embedded in the polymer-based gel, where it remained. The ionic species behaved like a liquid electrolyte, whereas the polymer-based solid-gel membrane provided a smooth impenetrable surface that allowed for the exchange of ions. The gel membranes were obtained in the form of thin films of reasonable mechanical strength. Their ambient temperature conductivities were in the range 10-2 to 10-1S/cm. The effect of K2CO3 concentration on the conductivity of the gels prepared was examined in the temperature range from 0 to 100℃. The microstructure and chemical composition of the gels studied were characterized by environmental scanning electron microscopy and FTIR, respectively.
conducting polymers, gels, electrochemistry, microstructure, infrared spectroscopy
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【期刊论文】A methanol barrier polymer electrolyte membrane in direct methanol fuel cells
王宇新, Hong Wu, Yuxin Wang*, Shichang Wang
Journal of New Materials for Electrochemical Systems 5, 251-254 (2002),-0001,():
-1年11月30日
A successful membrane for direct methanol fuel cell (DMFC) must not only conduct proton, but also prevent methanol crossover. With such an aim, membranes of polyvinyl alcohol (PVA)-blend-polystyrene sulfonic acid (PSSA) were prepared. The effects of curing temperature, methanol concentration and membrane composition on the ionic conductivity and the methanol permeability of the membranes were investigated. A membrane with 17% PSSA showed ionic conductivity σof 3x10−3S/cm and methanol permeability P of 2x10-8cm2/sec. The membrane would perform about 40 times better than NafionTMmembrane, if the ratio (σ/P) is adopted to characterize the performance of a membrane for DMFC.
Polymer electrolyte membrane., Direct membrane fuel cells,, polyvinyl (, PVA), -blend polystyrene sulfonic acid (, PSSA), better than Nafion
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【期刊论文】A Hybrid Membrane of Poly (vinyl alcohol) and Phosphotungstic Acid for Fucl Cells*
王宇新, LI Lei, WANG Yuxin
Chinese J. Chem. Eng., 10 (5) 614-617 (2002),-0001,():
-1年11月30日
Proton conducting membranes composed of phosphotungstic acid (PWA) and poly (vinyl alcohol) (PVA) were prepared. Conductivity and Fourier transform infrared spectrometer (FTIR) measurements show that most of the acid embedded are stable in the PVA matrix when the membrane is immerged in water or methanol solution at room temperature. Conductivity of the composite membranes scatters around 10-3 S-crn-1 at room temperature. The methanol crossover through the membranes is about an order of magnitude lower than that through Nafion 117 membrane.
Fuel cell,, proton conductor,, composite membrane,, poly (, vinyl alcohol), ,, phosphotungstic acid
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