Results 11 to 20 of about 2,049,740 (304)

Drastic Enhancement of Activity and Durability for Oxygen Reduction Reaction by Melamine Modification for Platinum Nanocluster‐Loaded Electrocatalysts [PDF]

Small Science
To facilitate the widespread adoption of environmentally friendly fuel cells, it is essential to enhance the mass activity (MA) and durability of platinum (Pt) catalysts used in the oxygen reduction reaction (ORR).
Ryuki Kurosaki, Tokuhisa Kawawaki, Kaoru Ikeda, Kazutaka Oiwa, Kotaro Sato, Haruna Tachibana, Minoru Inaba, Kenji Iida, Yuichi Negishi   +8 more
doaj   +2 more sources

Chirality enhances oxygen reduction

Proceedings of the National Academy of Sciences, 2022
Controlled reduction of oxygen is important for developing clean energy technologies, such as fuel cells, and is vital to the existence of aerobic organisms. The process starts with oxygen in a triplet ground state and ends with products that are all in singlet states. Hence, spin constraints in the oxygen reduction must be considered.
Yutao Sang, Francesco Tassinari, Kakali Santra, Wenyan Zhang, Claudio Fontanesi, Brian P. Bloom, David H. Waldeck, Jonas Fransson, Ron Naaman   +8 more
openaire   +3 more sources

Electrocatalysts for the Oxygen Reduction Reaction: From Bimetallic Platinum Alloys to Complex Solid Solutions

ChemEngineering, 2022
The oxygen reduction reaction has been the object of intensive research in an attempt to improve the sluggish kinetics that limit the performance of renewable energy storage and utilization systems.
Ricardo Martínez-Hincapié, Viktor Čolić   +1 more
doaj   +1 more source

Photocatalytic Evolution of Hydrogen Peroxide: A Minireview

Energies, 2022
Hydrogen peroxide (H2O2) has demonstrated applicability in a wide range of applications, spanning from a bleaching agent in the pulp industry, environmental remediation, and fuel cell technology.
Nikolaos Karamoschos, Dimitrios Tasis
doaj   +1 more source

Substance use, harm reduction attitudes and behaviors among attendees of nature rave parties in Israel

Harm Reduction Journal, 2023
Background Few studies have analyzed harm reduction behaviors and attitudes among rave party attendees. Since the late 1980s, there has been a large Israeli rave scene, also known as 'Nature Parties'. However, only a few studies have been conducted among
Hagit Bonny-Noach, Barak Shapira, Pinchas Baumol, Nir Tadmor, Paola Rosca, Stacy Shoshan, Yossi Harel-Fisch, Ariel Caduri   +7 more
doaj   +1 more source

Recent Advances on Heteroatom-Doped Porous Carbon—Based Electrocatalysts for Oxygen Reduction Reaction

Energies, 2022
Polymer electrolyte membrane fuel cells are considered one of the alternatives to fossil energy sources. The slow kinetics of the oxygen reduction reaction (ORR) at the cathode and the high price of Pt-based catalysts remain one of the key challenges for
Xue Li, Guolei Liu, Han Zheng, Kuizhao Sun, Linna Wan, Jing Cao, Saira Asif, Yue Cao, Weimeng Si, Fagang Wang, Awais Bokhari   +10 more
doaj   +1 more source

NiFeMo Nanoparticles Encapsulated within Nitrogen‐Doped Reduced Graphene Oxide as Bifunctional Electrocatalysts for Zinc‐Air Batteries

ChemElectroChem, 2021
Rechargeable metal‐air batteries (MABs) have emerged as promising candidates for portable energy storage technologies because of their favorable energy/power density, safety, and cost‐effectiveness.
Wenwen Zeng, Dr. Chaohui Wei, Kai Zeng, Dr. Xuecheng Cao, Prof. Mark H. Rümmeli, Prof. Ruizhi Yang   +5 more
doaj   +1 more source

Reactive oxygen species within the vaginal space: An additional promoter of cervical intraepithelial neoplasia and uterine cervical cancer development?

Open Medicine, 2023
Uterine cervical intraepithelial abnormalities and cancer development may also depend upon biological problems that arise as a result of complex molecular disturbances within the vaginal space, in addition to the widely known causative effect of human ...
Despot Albert, Fureš Rajko, Despot Ana-Marija, Mikuš Mislav, Zlopaša Gordan, D’Amato Antonio, Chiantera Vito, Serra Pietro, Etrusco Andrea, Laganà Antonio Simone   +9 more
doaj   +1 more source

Translating insights from experimental analyses with single-crystal electrodes to practically-applicable material development strategies for controlling the Pt/ionomer interface in polymer electrolyte fuel cells

JPhys Energy, 2023
Ionomers are used in polymer electrolyte fuel cells (PEFCs) catalyst layers to improve proton conduction. Recent analytical studies have clarified that the adsorption of the ionomer on the surface of a Pt catalyst deteriorates the catalytic activity for ...
Kensaku Kodama, Takahisa Suzuki, Kazuma Shinozaki, Ryosuke Jinnouchi   +3 more
doaj   +1 more source

Modulating the electronic structure of hollow Cu/Cu3P hetero‐nanoparticles to boost the oxygen reduction performance in long‐lasting Zn‐air battery

EcoMat, 2023
Developing cost–benefit and high‐performance non‐noble metal oxygen reduction reaction (ORR) electrocatalysts is highly imperative for wide applications of renewable energy conversion devices.
Yifan Huang, Fantao Kong, Fenglai Pei, Lianzhou Wang, Xiangzhi Cui, Jianlin Shi   +5 more
doaj   +1 more source