Results 51 to 60 of about 99,192 (223)

Discussion on the Graphite Yield of Zn-TiH2 Method in the Preparation of Accelerator Mass Spectrometry 14C Sample

open access: yesJournal of Isotopes, 2020
There are many kinds of methods for preparing graphite target for 14C dating by accelerator mass spectrometer (AMS). Increasing the yield of graphite is of great significance for optimizing the preparation processes of graphite target and improving the ...
XU Chao1,2;HONG Bing1;PENG Haijun1;DING Hanwei1,2;HONG Yetang1;ZHU Yongxuan1
doaj   +1 more source

Ultra‐fast, low‐cost, and green regeneration of graphite anode using flash joule heating method

open access: yesEcoMat, 2022
Graphite is the state‐of‐the‐art anode material for most commercial lithium‐ion batteries. Currently, graphite in the spent batteries is generally directly burned, which caused not only CO2 emission but also a waste of precious carbon resources.
Shu Dong   +6 more
doaj   +1 more source

Enhanced Electrochemical Properties of Biobased Activated Carbon for Supercapacitors

open access: yesAdvanced Engineering Materials, EarlyView.
Biobased activated carbons with diverse properties (pore size distribution, electrical conductivity, capacitance) for supercapacitors applications are synthesized and tested, using renewable biomass as versatile raw materials with disparate inherent heteroatom and molecular building blocks.
Shengfei Zhou   +4 more
wiley   +1 more source

Hybrid Framework Materials: Next‐Generation Engineering Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Hybrid organic–inorganic materials merge the unique properties of organic and inorganic compounds, enabling applications in optoelectronics, gas storage, and catalysis. This review explores metal‐organic frameworks, hybrid organic–inorganic perovskites, and the emerging field of hybrid glasses, emphasizing their structures, functionalities, and ...
Jay McCarron   +2 more
wiley   +1 more source

Miniaturization and Thermal Design of a 170 W AC/DC Battery Charger Utilizing GaN Power Devices

open access: yesIEEE Open Journal of Power Electronics, 2022
This paper presents the design and analysis of a high-density two-stage battery charger for mid-power applications like small electric vehicles and high-performance laptops utilizing gallium nitride (GaN) power devices.
Julian Weimer   +5 more
doaj   +1 more source

High‐Entropy Ti, Zr, Hf, Ta Multiphase Diboride with Deformation Resistance up to 2000 °C

open access: yesAdvanced Engineering Materials, EarlyView.
Ceramics are brittle and strength decreases with temperature. The multiphase high‐entropy (Ti0.25Ta0.25Hf0.25Zr0.25)B2 with heterogeneity at the nano‐ and microscale demonstrates deformation resistance up to 2000 °C, with maximum bending strength at 1800 °C.
Petre Badica   +3 more
wiley   +1 more source

Superconductivity in the Intercalated Graphite Compounds C6Yb and C6Ca [PDF]

open access: yes, 2005
In this letter we report the discovery of superconductivity in the isostructural graphite intercalation compounds C6Yb and C6Ca, with transition temperatures of 6.5K and 11.5K respectively. A structural characterisation of these compounds shows them to be hexagonal layered systems in the same class as other graphite intercalates.
arxiv   +1 more source

Ferromagnetism in Oriented Graphite Samples [PDF]

open access: yesPhys. Rev. B 66, 024429 (2002), 2002
We have studied the magnetization of various, well characterized samples of highly oriented pyrolitic graphite (HOPG), Kish graphite and natural graphite to investigate the recently reported ferromagnetic-like signal and its possible relation to ferromagnetic impurities. The magnetization results obtained for HOPG samples for applied fields parallel to
arxiv   +1 more source

Microstructure, Mechanical Properties, and Antibacterial Performance of Novel Fe‐Mn‐Zn Nanocrystalline Alloys Produced by Mechanical Alloying

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the development of Fe‐Mn‐Zn nanocrystalline alloys (0–9 wt% Zn) by mechanical alloying and subsequently hot pressing. Their microstructure, density, hardness, wear resistance, corrosion behavior, and antibacterial properties are systematically examined.
Ilker Emin Dag   +3 more
wiley   +1 more source

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