Results 21 to 30 of about 66,580 (245)

In-situ spectroscopic observation of dynamic-coupling oxygen on atomically dispersed iridium electrocatalyst for acidic water oxidation

Nature Communications, 2021
Uncovering the dynamics of active sites in the working conditions is important yet challenging. Here the authors identify dynamic-coupling oxygen on atomically dispersed iridium sites during oxygen evolution reaction using in situ techniques.
Hui Su, Wanlin Zhou, Wu Zhou, Yuanli Li, Lirong Zheng, Hui Zhang, Meihuan Liu, Xiuxiu Zhang, Xuan Sun, Yanzhi Xu, Fengchun Hu, Jing Zhang, Tiandou Hu, Qinghua Liu, Shiqiang Wei   +14 more
doaj   +1 more source

1.8 V Aqueous Symmetric Carbon-Based Supercapacitors with Agarose-Bound Activated Carbons in an Acidic Electrolyte

Nanomaterials, 2021
The specific energy of an aqueous carbon supercapacitor is generally small, resulting mainly from a narrow potential window of aqueous electrolytes.
Chih-Chung Lai, Feng-Hao Hsu, Su-Yang Hsu, Ming-Jay Deng, Kueih-Tzu Lu, Jin-Ming Chen   +5 more
doaj   +1 more source

Stability of iron-bearing carbonates in the deep Earth’s interior

Nature Communications, 2017
Carbonates are shown to exist in the lower mantle as seen in diamond inclusions, but thermodynamic constraints are poorly understood. Here, the authors synthesise two new iron carbonate compounds and find that self-oxidation-reduction reactions can ...
Valerio Cerantola, Elena Bykova, Ilya Kupenko, Marco Merlini, Leyla Ismailova, Catherine McCammon, Maxim Bykov, Alexandr I. Chumakov, Sylvain Petitgirard, Innokenty Kantor, Volodymyr Svitlyk, Jeroen Jacobs, Michael Hanfland, Mohamed Mezouar, Clemens Prescher, Rudolf Rüffer, Vitali B. Prakapenka, Leonid Dubrovinsky   +17 more
doaj   +1 more source

Intrinsic room-temperature ferromagnetism in a two-dimensional semiconducting metal-organic framework

Nature Communications, 2023
The development of two-dimensional (2D) magnetic semiconductors with room-temperature ferromagnetism is a significant challenge in materials science and is important for the development of next-generation spintronic devices. Herein, we demonstrate that a
Sihua Feng, Hengli Duan, Hao Tan, Fengchun Hu, Chaocheng Liu, Yao Wang, Zhi Li, Liang Cai, Yuyang Cao, Chao Wang, Zeming Qi, Li Song, Xuguang Liu, Zhihu Sun, Wensheng Yan   +14 more
doaj   +1 more source

Capacity Deterioration Analysis of Li-ion Battery Cathode Li[Ni1/3Co1/3Mn1/3]O2 Material by Soft X-ray Absorption Spectroscopy

Electrochemistry, 2021
We report detailed studies of capacity deterioration mechanism of Li[Ni1/3Co1/3Mn1/3]O2 (NCM) cathode after several numbers of cycling with the voltage range of 3.0–4.1 V/cell at 85 °C and after storage at charged states (3.7, 4.0 and 4.1 V/cell) at 70 ...
Tetsuo NAGAMI, Toyokazu NOMOTO, Harue SUGIYAMA, Shoji TACHIKI, Ren SAKAMOTO, Toshiaki OHTA   +5 more
doaj   +1 more source

Investigating the Effects of Build Height on Mechanical Behavior of Large‐Scale Laser Wire Directed Energy Deposited Nickel Titanium Alloy

Advanced Engineering Materials, EarlyView.
Laser wire directed energy deposition process was leveraged to fabricate large scale NiTi alloy wall. Evaluation of build‐height‐dependent tribo‐mechanical properties revealed significant differences in location specific sample characteristics. The middle region achieved optimal performance (superior wear resistance, balanced strength‐ductility ...
Hyunsuk Choi, Prayag Burad, Piash Bhowmik, Vishal Mahey, Yashwanth Bandari, Sougata Roy   +5 more
wiley   +1 more source

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

3D/4D imaging of complex and deformed microstructures with pink-beam dark field X-ray microscopy

Communications Materials
Dark Field X-ray Microscopy (DFXM) has advanced 3D non-destructive, high-resolution imaging of strain and orientation in crystalline materials, enabling the study of embedded structures in bulk.
Can Yildirim, Aditya Shukla, Yubin Zhang, Nikolas Mavrikakis, Louis Lesage, Virginia Sanna, Marilyn Sarkis, Yaozhu Li, Michela La Bella, Carsten Detlefs, Henning Friis Poulsen   +10 more
doaj   +1 more source

Imaging atelectrauma in Ventilator-Induced Lung Injury using 4D X-ray microscopy

Scientific Reports, 2021
Mechanical ventilation can damage the lungs, a condition called Ventilator-Induced Lung Injury (VILI). However, the mechanisms leading to VILI at the microscopic scale remain poorly understood.
Luca Fardin, Ludovic Broche, Goran Lovric, Alberto Mittone, Olivier Stephanov, Anders Larsson, Alberto Bravin, Sam Bayat   +7 more
doaj   +1 more source