Results 51 to 60 of about 262,231 (292)

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source

Numerical simulation of the insert chemistry of the hollow cathode from the deep space 1 ion engine 30,000 Hrs life test

, 2007
A model for the insert chemistry developed by the authors and based on the knowledge of the BaO – CaO – Al2O3 ternary system the ELT discharge cathode insert from the Deep Space 1 life test has been simulated. The computed data show a good agreement with
Gabriel, Stephen, Grubisic, Angelo, Coletti, Michele   +2 more
core   +2 more sources

Microthrusters based on the T5 and T6 hollow cathodes

, 2011
Small spacecraft with limited on-board resources would benefit greatly from the development of a low power, low cost microthruster able to offer propellant savings over conventional alternatives and enable higher energy missions.
Grubisic, Angelo Niko, Grubisic, Angelo
core   +1 more source

Spatial structure of radio frequency ring-shaped magnetized discharge sputtering plasma using two facing ZnO/Al2O3 cylindrical targets for Al-doped ZnO thin film preparation

AIP Advances, 2017
Spatial structure of high-density radio frequency ring-shaped magnetized discharge plasma sputtering with two facing ZnO/Al2O3 cylindrical targets mounted in ring-shaped hollow cathode has been measured and Al-doped ZnO ...
Takashi Sumiyama, Takaya Fukumoto, Yasunori Ohtsu, Tatsuo Tabaru   +3 more
doaj   +1 more source

Review of Inorganic Separator Engineering for Next‐Generation Lithium–Sulfur Batteries: Compromise or Cornerstone?

Advanced Materials, EarlyView.
Inorganic compound‐modified separators transform lithium–sulfur batteries from passive polysulfide confinement to active reaction‐pathway regulation. A Practical Relevance Index (PRI)‐guided framework bridges interfacial chemistry of inorganic separators with practical constraints, establishing unified design principles for scalable, high‐energy ...
Yuting Qin, Tianyi Wang, Xingyu Wang, Kaifu Xu, Yuzhou Wang, Chengyin Wang, Bing Sun, Guoxiu Wang   +7 more
wiley   +1 more source

Methods of triggering for the cold-cathode thyratrons with a trigger system based on an auxiliary glow discharge

AIP Advances, 2019
The paper deals with the investigations of the modernized version of the cold-cathode thyratron TPI1-10k/50 as applied to the problem of nanosecond triggering.
Y. D. Korolev, N. V. Landl, V. G. Geyman, G. A. Argunov, O. B. Frants, A. V. Bolotov   +5 more
doaj   +1 more source

Encapsulation of Few-Layer MoS₂ in the Pores of Mesoporous Carbon Hollow Spheres for Lithium-Sulfur Batteries

Nanomaterials, 2019
Integrating a highly conductive carbon host and polar inorganic compounds has been widely reported to improve the electrochemical performances for promising low-cost lithium sulfur batteries.
Yunyan Zhao, Qianyu Zhuang, Wenda Li, Hongrui Peng, Guicun Li, Zhonghua Zhang   +5 more
doaj   +1 more source

All‐Amyloid Functional Coacervates

Advanced Materials, EarlyView.
This study introduces an all‐amyloid interfacial complex coacervate technique that employs charge‐mediated or functionalization‐assisted complexation of oppositely charged food protein‐derived amyloid nanofibrils to engineer functional soft constructs across multiple length scales.
Seyyed Alireza Hashemi, Mohammad Peydayesh, Laura Baraldi, Mohammad Arjmand, Raffaele Mezzenga   +4 more
wiley   +1 more source

European Student Moon Orbiter solar electric propulsion subsystem architecture: an all–electric spacecraft

, 2007
This paper presents the Phase A study of the Solar Electric Propulsion subsystem selected for the ESA European Student Moon Orbiter enhanced microsatellite, performed at QinetiQ under ESA funding.
Wallace, Neil, Grubisic, Angelo, Coletti, Michele, Wells, Nigel   +3 more
core   +2 more sources

Key plasma processes in LaB6 thermionic hollow cathodes operating in He, D2, Ar, and Xe at 4–200 Pa and 0.25–5 A cm−2

AIP Advances
Key physical processes in a thermionic hollow cathode plasma are identified using an experimental dataset and a zero-dimensional model. Model predictions for voltage are in generally good agreement with the dataset when it is assumed that the plasma is ...
Timothy J. Sommerer, David J. Smith
doaj   +1 more source