Results 11 to 20 of about 19,369 (257)

Identification of the active triple-phase boundary of a non-Pt catalyst layer in fuel cells. [PDF]

Sci Adv, 2022
The rational design of non-Pt oxygen reduction reaction (ORR) catalysts and catalyst layers in fuel cells is largely impeded by insufficient knowledge of triple-phase boundaries (TPBs) in the micropore and mesopore ranges. Here, we developed a size-sensitive molecular probe method to resolve the TPB of Fe/N/C catalyst layers in these size ranges.
Wang YC, Huang W, Wan LY, Yang J, Xie RJ, Zheng YP, Tan YZ, Wang YS, Zaghib K, Zheng LR, Sun SH, Zhou ZY, Sun SG.   +12 more
europepmc   +3 more sources

Electrochemically driven C-N bond formation from CO₂ and ammonia at the triple-phase boundary. [PDF]

Chem Sci, 2022
Electrocatalytic formation of C–N bonds was achieved through the electrolysis of CO 2 and NH 3 over Cu catalysts. A combined analytical and spectroscopic approach gave insights into the reaction mechanism leading to formamide and acetamide products.
Li J, Kornienko N.
europepmc   +6 more sources

Understanding the Role of Triple Phase Boundaries on Coating-Free Solid-State Cathodes. [PDF]

ACS Energy Lett
Sulfide solid electrolytes have high ionic conductivities necessary to achieve high-rate solid-state cathodes at room temperature and low pressure. Cathode active materials generally require coatings to avoid deleterious oxidative decomposition reactions with the electrolyte. Coatings add cost and complexity to the manufacture.
Wang L, Hu B, Doerrer C, Zhang S, Yang L, Pi L, Jenkins M, Liu B, Pu SD, Yuan Y, Gao H, Robertson AW, Grant PS, Gao X, Bruce PG.   +14 more
europepmc   +4 more sources

EIS Analysis of the Triple Phase Boundary Model [PDF]

ECS Meeting Abstracts, 2009
Abstract not Available.
Abhishek Dhanda, Ryan O'Hayre, Heinz Pitsch   +2 more
openaire   +1 more source

Controlling the triple phase boundary on Na-O2 battery cathodes with perfluorinated polymers

Electrochimica Acta, 2022
This work was funded by the European Union (Graphene Flagship-Core 3, Grant No. 881603) and the R&D&I project PID2020–117626RA-I00, funded by MCIN/AEI/10.13039/501100011033. N. Ortiz-Vitoriano thanks Ramon y Cajal grant (RYC-2020-030104-I) funded by MCIN/AEI/10.13039/501100011033 and by FSE invest in your future.
M. Enterría, A. Letona-Elizburu, L. Medinilla, M. Echeverría, N. Ortiz-Vitoriano   +4 more
openaire   +2 more sources

Nickel–Zirconia Anode Degradation and Triple Phase Boundary Quantification from Microstructural Analysis [PDF]

Fuel Cells, 2009
AbstractMicrostructural evolution of anode supported solid oxide fuel cells (SOFC) during medium‐term stack testing has been characterised by scanning electron microscopy (SEM). Low acceleration voltage SEM imaging is used to separate the three anode phases (nickel, yttria‐stabilised zirconia and porosity).
Faes, A., Hessler-Wyser, A., Presvytes, D., Vayenas, C. G., Van herle, J.   +4 more
openaire   +3 more sources

Plastic strain-induced evolution of CSL boundaries at elevated temperature for Ni-base superalloy: experimental and phase-field perspective

Journal of Materials Research and Technology, 2020
Samples cut from a 700 ℃/322 MPa/9117 h creep-ruptured specimen as well as a non-tested sample were characterized by electron backscatter diffraction to investigate the evolution of low ∑ (∑≤29) coincident site lattice boundaries during strain at ...
Xiaoqing Song, Liying Tang, Yongxin Wang, Rongcan Zhou, Jing Zhang, Zheng Chen   +5 more
doaj   +1 more source

Study of the relationship between intergranular stress corrosion cracking and grain boundary characteristics in brass

Electrochemistry Communications, 2021
The purpose of this study is to investigate the correlation between intergranular stress corrosion cracking (IGSCC) and grain boundary characteristics in brass.
Lin Chen, Yanjun Chen, Huisheng Yang, Yanjing Su, Lijie Qiao   +4 more
doaj   +1 more source

Simulation of phase transportations in the field of internal stresses [PDF]

Computer Methods in Materials Science, 2007
The main types of the internal stresses are the thermal and residual ones and fields of structural defects as well. These stresses have an essential effect on the phase transformations in materials. The kinetics of the process is described by a parabolic
Nikolay M. Vlasov, Ivan I. Fedik
doaj   +1 more source

Multiphysics simulation of a solid oxide fuel cell based on COMSOL method [PDF]

E3S Web of Conferences, 2021
Solid oxide fuel cells (SOFCs) are promising high-effective energy conversion devices for wide fuel sources and high energy efficiency. Based on non-linear kinetics at triple-phase-boundary, a three-dimensional model with a single flow channel was ...
Yaoxuan Qiao, Cheng Fan, Kening Sun
doaj   +1 more source