coupling correlation
Recently Published Documents


TOTAL DOCUMENTS

16
(FIVE YEARS 2)

H-INDEX

5
(FIVE YEARS 0)

2020 ◽  
Author(s):  
Wu Tong ◽  
Bolong Huang ◽  
Pengtang Wang ◽  
Qi Shao ◽  
Xiaoqing Huang

Abstract Understanding the correlation between exposed surfaces and performances of controlled nanocatalysts can aid effective strategies to enhance electrocatalysis, but this is as yet unexplored for the nitrogen reduction reaction (NRR). Here, we first report controlled synthesis of well-defined Pt3Fe nanocrystals with tunable morphologies (nanocube, nanorod and nanowire) as ideal model electrocatalysts for investigating the NRR on different exposed facets. The detailed electrocatalytic studies reveal that the Pt3Fe nanocrystals exhibit shape-dependent NRR electrocatalysis. The optimized Pt3Fe nanowires bounded with high-index facets exhibit excellent selectivity (no N2H4 is detected), high activity with NH3 yield of 18.3 μg h−1 mg−1cat (0.52 μg h−1 cm−2ECSA; ECSA: electrochemical active surface area) and Faraday efficiency of 7.3% at −0.05 V versus reversible hydrogen electrode, outperforming the {200} facet-enclosed Pt3Fe nanocubes and {111} facet-enclosed Pt3Fe nanorods. They also show good stability with negligible activity change after five cycles. Density functional theory calculations reveal that, with high-indexed facet engineering, the Fe-3d band is an efficient d-d coupling correlation center for boosting the Pt 5d-electronic exchange and transfer activities towards the NRR.


2019 ◽  
Vol 118 ◽  
pp. 02052
Author(s):  
Yang Chen ◽  
Luqing Zhang ◽  
Aikang Chen ◽  
Yanchi Zhang ◽  
Da Xie

Energy router is the main equipment of energy Internet to interact through energy and information. This paper proposes the routing algorithm of the virtual energy router composed of multiple energy routers and constructs the multi-energy coupling correlation model, and combines internal routing algorithm of the virtual energy router with multi-energy correlation model to plan the capacity of energy routers in the regional energy network composed of multiple parks. The simulation shows that the planning method based on the routing algorithm improves the energy, environment and economic benefits of the regional energy wide area network.


2017 ◽  
Vol 9 (8) ◽  
pp. 1763-1780 ◽  
Author(s):  
Leeladhar Malviya ◽  
Rajib Kumar Panigrahi ◽  
M. V. Kartikeyan

Multiple input multiple output (MIMO) antenna is at core of the presently available wireless technologies. The design of MIMO antennas over a limited space requires various approaches of mutual coupling reduction, otherwise gain, efficiency, diversity gain, and radiation patterns will be severely affected. Various techniques have been reported in literature to control this degrading factor and to improve the performance of the MIMO antennas. In this review paper, we have carried out an extensive thorough investigation of diversity and mutual coupling (correlation) reduction techniques in compact MIMO antennas.


2015 ◽  
Vol 773-774 ◽  
pp. 756-760
Author(s):  
Nur Nasyilla Othman ◽  
Wan Noor Najwa Wan Marzudi ◽  
Nur Faizah Mohamad Yusof ◽  
Zuhairiah Zainal Abidin ◽  
Siti Zarina Mohamad Muji ◽  
...  

A dual microstrip MIMO antenna with Electromagnetic Bandgap (EBG) structures presented. EBG structures proposed in order to reduce the coupling between elements .Simulated scattering parameters with and without EBG structures compared. An evaluation of MIMO antenna characteristics is presented, with the analysis of the mutual coupling, correlation coefficients, total active reflection coefficients (TARC), capacity loss and channel capacity using Computer Simulation Technology (CST) Microwave Studio Software. The proposed antenna is a good candidate for WLAN practical applications.


2014 ◽  
Vol 27 (4) ◽  
pp. 853-859 ◽  
Author(s):  
Zhengxian Liu ◽  
Musu Wang ◽  
Yue Zhou ◽  
Ningning Wu

2014 ◽  
Vol 52 (4) ◽  
pp. 183-189 ◽  
Author(s):  
Alexander A. Marchione ◽  
Rebecca J. Dooley ◽  
Breanna Conklin

Sign in / Sign up

Export Citation Format

Share Document