Results 71 to 80 of about 873,347 (342)

Ferroelectric Catalysts in the Hydrogen Evolution Reaction: A Perspective

Advanced Science, EarlyView.
This perspective summarizes recent advances in ferroelectric (FE) catalysts for the hydrogen evolution reaction (HER). It first introduces HER fundamentals and FE mechanisms, then classifies FE catalysts into single‐phase, single‐atom‐modified, heterostructured, and other engineered types, with representative examples.
Rongxuan Lu, Weizhen Meng, Zhenxiang Cheng, Judy N. Hart, Michael Ferry, Sean Li, Wenxian Li   +6 more
wiley   +1 more source

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

Hollow Sphere c-In2O3 for Application in Lithium Ion Battery

International Journal of Electrochemical Science, 2015
The hollow sphere c-In2O3 were synthesized via hydrothermal reaction. The crystal structure of the sample was collected and analyzed through X-ray diffractometry (XRD).
Xinghua Liang, Qingqing Song, Lin Shi, Yusi Liu, Gongqin Yan, Anbang Jiang   +5 more
doaj   +1 more source

RF Plasma CVD Using Hollow Cathode Discharge

, 1988
We have made a-Si photoreceptors at low pressure to prevent the formation of SimHn powders and by separating the growing surface from the high density plasma.
Shin Araki, Hideki Kamaji, Kazuo Norimoto   +2 more
core   +1 more source

Disentangling Elemental Roles in an Amorphous Medium‐Entropy Electrocatalyst for Oxygen Evolution

Advanced Science, EarlyView.
An amorphous medium‐entropy FeCoNiMo‐a catalyst with a unique nanoring architecture is synthesized via a solvothermal method. The catalyst exhibits exceptional stability in anion exchange membrane water electrolysis, maintaining stable operation for over 600 h at 1 A cm−2.
Jinhu Wu, Xianjun Cao, Cheng Gong, Dongfang Li, Yaojie Lei, Daojin Zhou, Pengpeng Zhang, Zeliang Wu, Bin Yu, Xingwang Peng, Bernt Johannessen, Somnath Chanda Roy, Jinqiang Zhang, Hao Liu, Yufei Zhao   +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

Nanocluster‐Assisted OH Ligand Modification Optimizes Activity and Stability of Fe‐N‐C Catalysts

Advanced Science, EarlyView.
A nanocluster‐assisted ligand engineering stabilizes OH‐modified FeN4 active sites through strong electronic coupling between isolated Fe atoms and adjacent nanoclusters. This synergy optimizes oxygen‐intermediate adsorption, lowers ORR energy barriers, and breaks the conventional activity–stability trade‐off, enabling high ORR activity, exceptional ...
Xue Zhao, Junpeng Chen, Shice Wang, Zhao Yu, Jing Wang, Qiuming Peng, Ge Li   +6 more
wiley   +1 more source

Electrochemical Properties of Hollow Spherical Na3V2(PO4)3/C Cathode Materials for Sodium-ion Batteries

International Journal of Electrochemical Science, 2017
Hollow Spherical Na3V2(PO4)3/C cathode materials were successfully synthesized by a simple spray drying method. The structure and morphology of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission
Chunmei Huang, Zonglin Zuo, Jianqiu Deng, Qingrong Yao, Zhongmin Wang, Huaiying Zhou   +5 more
doaj   +1 more source

The iron-neon hollow-cathode spectrum [PDF]

Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1975
Over 4000 wave lengths are listed between 1900 and 9000 Å for Fe i, Fe ii, Ne i and Ne ii lines measured in a hollow cathode discharge tube with iron electrodes and a neon gas filling. Photoe-electric traces between 2400 and 5700 Å on a semiquantitative intensity scale are also included. For Fe i, energy values for 124 even and 240 odd levels have been
openaire   +2 more sources

Progress in Experimental Study of Plume Plasma Discharge Characteristics of the Hollow Cathode

气体物理
With the continuous maturation and sustained application of electric propulsion technology, electric propulsion is becoming the preferred choice of space propulsion for deep space exploration missions with its high specific impulse advantage. Among them,
Jintao JIA, Long MIAO, Yugan LIAO
doaj   +1 more source