Results 91 to 100 of about 10,304 (289)

Effect of electrochemical hydrogen charging on the microstructure and mechanical behavior of a duplex structured Mg-8wt.%Li alloy

Journal of Magnesium and Alloys
In this work, through performing microstructural characterization, tensile testing and failure analysis, the influence of electrochemical hydrogen charging on the microstructure and mechanical behavior of an as-cast Mg-8wt.%Li alloy was investigated.
Shuo Wang, Daokui Xu, Baojie Wang, Dongliang Wang, Zhiqiang Zhang, Li Liu, Jie Chen   +6 more
doaj   +1 more source

In situ nanoindentation during electrochemical hydrogen charging: a comparison between front-side and a novel back-side charging approach [PDF]

The effects of hydrogen in metals are a pressing issue causing severe economic losses due to material deterioration by hydrogen embrittlement. A crucial understanding of the interactions of hydrogen with different microstructure features can be reached ...
Dehm, G., Fang, X., Rao, J., Brinckmann, S., Duarte, M. J., Krieger, W.   +5 more
core   +1 more source

Anion‐Exchange‐Enabled Hydrogel Electrolytes With High Zn2+ Transference for Dendrite‐Free Flexible Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
A high‐Zn2+‐transference hydrogel electrolyte of ex‐PDADAM is developed via anion exchange at quaternary ammonium sites, achieving high Zn2+ transference number (0.86), ionic conductivity (8.10 mS cm−1), and toughness (51.25 MJ m−3). Symmetric cells are operated stably for over 2000 h, while flexible pouch cells retain 90.9% capacity after 300 cycles ...
Jung Woo Hong, Yeon Su Kim, Zuyang Hu, Hyungyu Cho, Gun Jang, Minjun Hwang, Hye Rin Park, Jun Su Kim, Ho Seok Park   +8 more
wiley   +1 more source

Steering Oxygen Activation Pathways via Redox Dual‐Defects in 2D Hydrated WO3 for High‐Yield Singlet Oxygen Evolution

Advanced Functional Materials, EarlyView.
Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo, Mingqi Xiao, Fangyuan Zhang, Hui Li, Yuli Jia, Zhenfang Zhang, Liqun Ye, Bo Yang, Tianyi Ma   +8 more
wiley   +1 more source

Effect of cathodic hydrogen charging on the surface of duplex stainless steel [PDF]

, 1993
The effect of cathodic hydrogen charging on the mechanical properties of steels has been extensively investigated (1-5). There is a general agreement, that cathodic harging during a tensile test leads to reduction in ductility, and embrittlement (5-7 ...
Gadgil, V.J., V. J. Gadgil, Geijselaers, Hubertus J.M., H. J. M. Geijselaers   +3 more
core   +1 more source

Bandgap‐Engineered AlGaAs/GaAs Heterostructures for Wavelength‐Selective Dual‐Polarity Photoelectrochemistry

Advanced Functional Materials, EarlyView.
Bandgap‐engineered AlGaAs/GaAs heterostructures exhibit wavelength‐selective dual‐polarity photoelectrochemistry, switching from photocathodic to photoanodic response depending on excitation wavelength. The polarity transition is governed by band‐selective absorption, built‐in electric‐field‐driven carrier transport, and interfacial charge‐transfer ...
Yukai Mao, Lipin Chen, Jules Courtin, Siyu Lin, Gangri Cai, Yan Zhu, Yoan Léger, Nicolas Bertru, Jinshi Zhao, Charles Cornet   +9 more
wiley   +1 more source

Effect of oxygen and nitrogen on hydrogen adsorption and permeation processes

Journal of Pipeline Science and Engineering
This study investigated the effect of oxygen and nitrogen on hydrogen adsorption and permeation by combining electrochemical hydrogen permeation tests with density functional theory calculations.
Lin Chen, Meng Sun, Shiwen Guo, Boxing Han, Heng Liu, Haozhi Wu, Shaohua Dong, Keke Song   +7 more
doaj   +1 more source

Coupling Anodic Activity and Stability at Ni‐Based Non‐Oxide Catalysts via Coordinating Alcohol Oxidation and Oxygen Evolution

Advanced Functional Materials, EarlyView.
A cooperative and competitive interrelationship between alcohol oxidation (AOR) and water oxidation (OER) was observed on a typical anode catalyst of Ni2P. In situ Raman spectroscopy and electrochemical analyses revealed a specific complementary mechanism between them, in which OER and AOR critically contribute to the activity and stability of anodic ...
Yong Yan, Xinyu Liu, Yuguo Zhao, Hanwen Jian, Huan Zhou, Riyi Zhang, Dong Wang, Peter Schaaf, Lihua Wang, Guangsheng Guo, Xiayan Wang   +10 more
wiley   +1 more source

Low-cycle fatigue mechanical behavior of 30CrMo steel under hydrogen environment and numerical verification of chaboche model

Materials Research Express
In order to investigate the fatigue behavior of the hydrogen storage material, 30CrMo steel, in a hydrogen environment, an electrochemical hydrogen charging method was employed.
Y B Guan, Q Y Wang, C He, L Fu, L Lin, Y Q Zhang, Y R Luo, Z G Wang, X Wu   +8 more
doaj   +1 more source

Investigation of Welded Joints of Pipelines from an Existing Gas Transmission Network Exposed to Hydrogen—Part I: Structure, Mechanical Properties and Susceptibility to Hydrogen Embrittlement

Metals
The utilization of hydrogen as a clean energy carrier requires an assessment of existing natural gas pipelines with respect to hydrogen embrittlement (HE). In this study, the structural integrity and hydrogen sensitivity of X52 (L360) pipeline steel from
Boris Yanachkov, Kateryna Valuiska, Yana Mourdjeva, Rumen Krastev, Vanya Dyakova, Tatiana Simeonova, Roumen H. Petrov, Krasimir Kolev, Margo Cauwels, Tom Depover, Rumyana Lazarova   +10 more
doaj   +1 more source