Results 91 to 100 of about 636,938 (293)

Bias‐Free Highly Efficient and Stable Dye‐Sensitized Photoelectrochemical Cells via Cascade Charge Transfer

Advanced Functional Materials, EarlyView.
A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park, Kyounglim Kim, Jinyoung Lee, Sarang Kim, Gwangsu Yoon, So Yeon Yoon, Jeong Kyeong Lee, Ji‐Wook Jang, Tae‐Hyuk Kwon   +8 more
wiley   +1 more source

PWM–PFM Hybrid Control of Three-Port LLC Resonant Converter for DC Microgrids

Energies
This article proposes a high-efficiency isolated three-port resonant converter for DC microgrids, combining a dual active bridge (DAB)–LLC topology with hybrid Pulse Width Modulat-Pulse Frequency Modulation (PWM-PFM) phase shift control.
Yi Zhang, Xiangjie Liu, Jiamian Wang, Baojiang Wu, Feilong Liu, Junfeng Xie   +5 more
doaj   +1 more source

Effects of Environmental Gas and Trace Water on the Friction of DLC Sliding with Metals

Micromachines, 2017
This paper describes an experimental study on the friction of a-C:H diamond-like carbon (DLC) and ta-C DLC coatings in gas with different concentration of trace water. Pin-on-disk sliding experiments were conducted with DLC coated disks and aluminum pins
Yoshihiro Kurahashi, Hiroyoshi Tanaka, Masaya Terayama, Joichi Sugimura   +3 more
doaj   +1 more source

Technical and economic aspects of hydrogen storage in metal hydrides [PDF]

The recovery of hydrogen from such metal hydrides as LiH, MgH2, TiH2, CaH2 and FeTiH compounds is studied, with the aim of evaluating the viability of the technique for the storage of hydrogen fuel.
Schmitt, R.
core   +1 more source

Materials for hydrogen storage [PDF]

, 2015
In the present article two systems studied theoretically in the Physics De-partment of the Universidad Nacional del Sur are presented. Both are related to the Physics of Ma-terials, more specifically to intermetallic hydrogen storage materials, and have ...
Pronsato, Maria Estela, Robina Merlino, Ariana Melisa   +1 more
core  

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

The effect of molten salt thermal storage scheme on thermal economy and peaking performance of thermal power units

Xi'an Gongcheng Daxue xuebao
In order to study the effect of coupled molten salt thermal storage system on thermal economy and peaking performance of thermal power units under the condition of simultaneous supply of industrial steam and heating steam, Ebsilon software was used to ...
LI Hongbo, WANG Shun, JING Rui, JIA Zhenguo, GUAN Hongjun, HE Suoying, ZHANG Liqiang, GAO Ming   +7 more
doaj   +1 more source

Effects of Residual Gas on Tribochemical Reactions of SUJ2 Steel in Vacuum and in Argon Gas Atmosphere

Tribology Online, 2009
To analyze the mechanisms of tribochemical reactions occurring between atmospheric gases and materials induced by friction, the authors have developed a friction test system with integrated XPS.
Hiroki Mano, Koji Miyake, Miki Nakano, Atsushi Korenaga, Takashi Murakami, Shinya Sasaki, Joichi Sugimura   +6 more
doaj   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

New Experiment System for Sliding Tests in Hydrogen and Surface Analysis with Transfer Vessel

Tribology Online, 2009
A new tribo experiment system is developed for sliding tests under high purity gas environments including hydrogen. It uses a transfer vessel such that surface oxidation does not substantially occur during transfer of specimens to surface analyzers.
Hiroyoshi Tanaka, Yoshinori Sawae, Kanao Fukuda, Shigemasa Yamagami, Takehiro Morita, Naoshi Izumi, Joichi Sugimura   +6 more
doaj   +1 more source