Results 21 to 30 of about 6,856 (263)

Synthesis of Hollow Paramontroseite VO2 Microspheres as Stable Electrode Materials for Lithium-ion Batteries

International Journal of Electrochemical Science, 2021
A simple and versatile method was developed to prepare hollow Paramontroseite VO2 microspheres. Hollow VO2 microspheres were formed via an Ostwald ripening mechanism.
Hailong Fei
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Mechanical and Wear Properties of 42CrMo Steel by Plasma Nitriding assisted Hollow Cathode Ion Source

Materials Research, 2021
Plasma nitriding is a plasma-activated thermochemical method widely used to increase the fatigue strength, hardness and wear resistance of low-alloy steels.
F.S. Zhao, Z.H. Zhang, M.H. Shao, Y.J. Bi, Y.Q. Zhao, Z.W. Wang, Y. Li, H.H. Li, X.G. Xu, Y.Y. He   +9 more
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Improved Field Emission Properties of Carbon Nanostructures by Laser Surface Engineering

Nanomaterials, 2020
We herein present an alternative geometry of nanostructured carbon cathode capable of obtaining a low turn-on field, and both stable and high current densities.
Minh Nhat Dang, Minh Dang Nguyen, Nguyen Khac Hiep, Phan Ngoc Hong, In Hyung Baek, Nguyen Tuan Hong   +5 more
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“Hollow cathode” gun optics

Review of Scientific Instruments, 1997
The generation of an electron beam by a hollow cathode gun in a cusp magnetic field is discussed. Such a gun is proposed for an electron cooling device without toroids. In a section with a homogeneous magnetic field, this beam experiences a disturbance region near the axis where the electron temperature becomes higher.
CIULLO, Giuseppe, SHARAPA AN, SHEMYAKIN AV, TECCHIO L.   +3 more
openaire   +3 more sources

Promoting polysulfides redox conversion by sulfur-deficient ZnS1−x hollow polyhedrons for lithium-sulfur batteries

Materials & Design, 2021
Lithium-sulfur (Li-S) batteries are deemed as the attractive systems for high-energy storage. However, the polysulfides shuttling with slow redox kinetics has seriously hindered their practical applications. Herein, sulfur-deficient zinc sulfide (ZnS1−x)
Wanjie Gao, Qianwen Jin, Yanyu Liu, Yongguang Zhang, Xin Wang, Zhumabay Bakenov   +5 more
doaj   +1 more source

Remotely induced high-density hollow-anode plasma and its application to fast deposition of photosensitive microcrystalline silicon thin film with preferential <110> orientation

AIP Advances, 2019
We investigated the application of a less hydrogen-dilute and low gas pressure hollow-anode plasma to fast chemical-vapor deposition of photosensitive hydrogenated microcrystalline silicon (μc-Si:H).
Toshihiro Tabuchi, Yasumasa Toyoshima, Shinichi Fujimoto, Masayuki Takashiri   +3 more
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Emission characteristics of laser ablation-hollow cathode glow discharge spectral source

Open Chemistry, 2014
The emission characteristics of a scheme combining laser ablation as sample introduction source and hollow cathode discharge as excitation source are presented.
Karatodorov Stefan, Mihailov Valentin, Grozeva Margarita   +2 more
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Triple Langmuir Probes Measurements of LaB6 Hollow Cathodes Plume

Frontiers in Physics, 2019
Lanthanum hexaboride hollow cathodes represent a viable option for high power Hall effect thruster applications, under development for the next generation of manned and robotic interplanetary missions.
Giulia Becatti, Daniela Pedrini, Bhargav Kasoji, Fabrizio Paganucci, Mariano Andrenucci   +4 more
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Thermal Analysis and Testing of Different Designs of LaB₆ Hollow Cathodes to Be Used in Electric Propulsion Applications

Aerospace, 2021
LaB6 emitters are commonly used in hollow cathodes that are utilized in electric space propulsion systems. In order to obtain necessary surface current emission densities of 1–10 A/cm2 for cathode operations, LaB6 emitters require temperatures above 1500
Ugur Kokal, Nazli Turan, Murat Celik
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Precursor-template Strategy toward Hollow Nanostructured Li(Ni1/3Co1/3Mn1/3)O2 Microspheres Cathode with Enhanced Electrochemical Performance

International Journal of Electrochemical Science, 2018
The hollow nanostructured Li(Ni1/3Co1/3Mn1/3)O2 (NCM) microspheres with low Li/Ni disorder were fabricated by precursor-template approach and investigated electrochemically as lithium ion batteries (LIBs) cathode. The as-obtained NCM microspheres cathode
Zhenya Kang, Yourong Wang, Mengzhi Yao, Siqing Cheng   +3 more
doaj   +1 more source