Article
Chemistry, Multidisciplinary
An-Ting Lee, Chih-Shan Tan, Michael H. Huang
Summary: In this study, conductivity measurements were performed on Cu2O and Si materials with different crystal faces using C-AFM. It was found that selecting appropriate contacting faces can induce current rectification effects, which can be applied in the production of photosensitive materials and field-effect transistors.
ACS CENTRAL SCIENCE
(2021)
Article
Chemistry, Physical
Umesh Shinde, Poornesh Kumar Koorata
Summary: This article proposes a material model to predict the nonlinearity of fuel cell gas diffusion layer (GDL) conductivity, taking into account functional variables such as porosity variation, fiber contact density, and fiber dislocation parameters. The results show that the GDL conductivity varies nonlinearly with the magnitude of applied cyclic compressive load, and there is a decrease in conductivity when the compressive load exceeds a certain threshold.
JOURNAL OF POWER SOURCES
(2022)
Article
Thermodynamics
Mohamad Noor Izwan Johari, Irnie Azlin Zakaria, W. H. Azmi, W. A. N. W. Mohamed
Summary: The study found that using Al2O3-SiO2 hybrid nanofluids as a cooling liquid for PEMFC instead of conventional ethylene glycol can significantly improve thermal conductivity and electrical conductivity, thereby enhancing energy conversion efficiency.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Saifuddin Khalid, Irnie Zakaria, W. H. Azmi, W. A. N. W. Mohamed
Summary: The study demonstrates that in PEM fuel cell applications, the 10:90 ratio of Al2O3-SiO2 hybrid can achieve optimal performance, with thermal and electrical conductivity decreasing as the percentage of Al2O3 increases, while viscosity performance exhibits the opposite trend. Considering the dominance of thermal properties over viscosity and electrical conductivity, the 10:90 ratio is the most suitable for implementation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
Zhiyong Wang, Lisa S. Walter, Mao Wang, Petko St Petkov, Baokun Liang, Haoyuan Qi, Nguyen Ngan Nguyen, Mike Hambsch, Haixia Zhong, Mingchao Wang, SangWook Park, Lukas Renn, Kenji Watanabe, Takashi Taniguchi, Stefan C. B. Mannsfeld, Thomas Heine, Ute Kaiser, Shengqiang Zhou, Ralf Thomas Weitz, Xinliang Feng, Renhao Dong
Summary: The novel synthesis of metal-phthalocyanine-based p-type semiconducting 2D c-MOF films with unprecedented edge-on layer orientation at the air/water interface was reported. The unique layer orientation allowed for investigation of lateral and vertical conductivities, revealing anisotropic charge transport properties. Directional conductivity studies identified that intrinsic conductivity is dominated by charge transfer along the interlayer pathway, demonstrating potential for various optoelectronic applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Characterization & Testing
Beril Oguz, Tugba Hayri-Senel, Ebru Kahraman, Gulhayat Nasun-Saygili
Summary: In this study, GO-PU/rGO-PU composites were prepared by adding different ratios of GO/rGO to Sunflower based PU. The composites were characterized using FTIR, XRD, and SEM analyses, and their film properties were investigated. The results showed that the addition of filler materials (GO and rGO) enhanced the adhesion and corrosion resistance of PU, while the addition of rGO increased its electrical conductivity. rGO doped coatings may serve as alternative options for electrical conductive and corrosion resistant coatings in heavy environments.
Article
Nanoscience & Nanotechnology
E. Tao, Zengying Ma, Ding Cai, Shuyi Yang, Yun Li
Summary: Doping Ca2+ into TiO2 lattice increases its carrier density, changes morphology, and enhances conductivity, making Ca2+-TiO2/graphene composite suitable for antistatic coatings.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Live Molmen, Lars Fast, Anders Lundblad, Peter Eriksson, Peter Leisner
Summary: This study proposes new application-specific methods for measuring contact resistance and compares them with methods from references and standards. The results show that changing the measurement setup can reduce uncertainty and eliminate the influence of probe resistance on measurement results. Furthermore, the study finds that different accelerated durability tests have varying effects on the contact resistance of the power terminal.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Qiuhui V. Yu, Kenji Watanabe, Takashi Taniguchi, Lu Hua Li
Summary: The interfacial thermal conductance between high-quality graphene and trilayer BN is depressed when the heterostructure thickness is smaller than the wavelength of the low-frequency phonons, such as ZA in BN.
Article
Chemistry, Multidisciplinary
Beum Jin Park, Ho Seok Park
Summary: In this study, N, P, and S doped rGO fibers were obtained through a vacuum diffusion process, which significantly increased the electrical conductivities while maintaining the fibrous morphology. The highest conductivity achieved was 1.11 x 10(4) S m(-1) for N doped rGO fiber, indicating a facile method to enhance electrical conductivity of rGO fibers while preserving their original structure.
Article
Chemistry, Physical
H. Saman Khosravi, Qamar Abbas, Klaus Reichmann
Summary: Proton Exchange Membrane Fuel Cell (PEMFC) is a promising technology for generating electricity, but metal-based interconnectors may induce degradation under harsh acidic conditions. Despite the potential of stainless steel interconnectors, the application of surface modification and protective coatings still faces challenges such as low electrical conductivity and high cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
W. H. Kao, Y. L. Su, J. H. Horng, S. H. Chen
Summary: NbxAlyC and CrxAlyC coatings were deposited on stainless steel 316L substrates using a RF unbalanced magnetron sputtering system. The coatings were vacuum annealed at 800°C and 750°C, respectively, resulting in the formation of Nb2AlC and Cr2AlC MAX crystalline phases. The annealed coatings exhibited improved hardness, corrosion resistance, and electrical conductivity, as well as the formation of a dense Al2O3 surface layer.
Article
Physics, Multidisciplinary
Goudilyan Mylsamy, Prabu Krishnasamy
Summary: In this study, NiP/Graphene was deposited on the surface of NaOH-treated ramie fiber to enhance its electrical conductivity and wettability. Various analysis methods were used to investigate the effects of different treatments and coatings on the fiber surface. The results showed that the treated-coated fiber exhibited the presence of NiP and Graphene, resulting in a significant increase in electrical conductivity by 56.7% and 74%.
Article
Chemistry, Multidisciplinary
Pavel V. Barkov, Olga E. Glukhova
Summary: This study investigates the impact of holey graphene with different neck widths on its electrical conductivity. It was found that the neck width can influence the conductivity and electronic energy gap of holey graphene, and demonstrated anisotropy in electrical conductivity.
Article
Materials Science, Multidisciplinary
Yifei Huang
Summary: In this study, a TiN/amorphous carbon double-layer coating was prepared on 316L stainless steel using magnetron sputtering. The structure of the amorphous carbon was controlled by varying the carbon target current. The results showed that the coating with a carbon target current of 5 A exhibited low contact resistance and high corrosion resistance.
