Browse Author Index | Energy Storage and Conversion

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Lalor, James F. , School of Mechanical Engineering, Technological University Dublin, D01 K822 Dublin, Ireland
Lalor, James F. , School of Mechanical Engineering, Technological University Dublin, D01 K822 Dublin, Ireland
Law, Victor J. ,  School of Mechanical and Materials Engineering, University College Dublin, D04 V1W8 Dublin, Ireland
Law, Victor J. , School of Mechanical and Materials Engineering, University College Dublin, D04 V1W8 Dublin, Ireland
Lei, Xiaodong, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; Quzhou Institute for Innovation in Resource Chemical Engineering, Quzhou 324000, Zhejiang Province, China
Li, Chunyu, Automotive Engineering College, Tsinghua University, Beijing 100084, China
Li, Jun , Engine Development Department, General R&D Institute, Changchun 130013, China
Li, Kai , Workstation of Academician Li Jun, Foshan Xianhu Laboratory, Foshan 528234, China
Li, Lei , SINOPEC Nanjing Research Institute of Chemical Industry Co., Ltd., Nanjing 210048, China; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
Li, Xiaonan, School of Management, University of Sanya, Sanya 572022, China
Li, Zhiqiang , College of Science, China Jiliang University, Hangzhou 310018, China
Liu, Qiusheng, Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan

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The reduction of carbon dioxide to valuable chemical products is a promising solution to address carbon balance and energy issues. Herein, amorphous nitrided copper-iron oxides are prepared by gas-phase nitriding of Cu Fe-layered double hydroxide precursor s with urea as nitrogen source. Amorphous materials are more likely to generate defect vacancies during the reaction process, and these vacancies can function as active sites for catalytic reactions. Therefore, the obtained materials show high activity for CO 2 electroreduction to methane and formic acid, achieving a total Faraday efficiency of 74.7% at −0.7 V vs RHE and exhibiting a continuous 10 h durability in the H-cell. The uniformly distributed Cu + sites act as active sites by losing electrons to activate CO 2 . During the CO 2 electroreduction , CO 2 is converted to *COOH via proton-electron coupling, *COOH combines directly with a proton in solution to produce the HCOOH product, and the other part of *COOH undergoes a protonated dehydration process to form the *CHO intermediate which dehydrates again to form CH 4 . This study provides a new approach for designing CO 2 electroreduction catalysts.

Aluminum zinc oxide (AZO) is a nontoxic and a low-cost material that finds application as a transparent conducting electrode in photovoltaic devices. In this study the (direct current) DC magnetron sputtering of AZO films is carried out at different deposition times of 5, 10, 15, 20 and 25 min’s at room temperature and it’s structural, optical, electrical and morphological properties are studied for its use as a front contact for thin film solar cell application. The structural study suggests that the preferred orientation of grains along (002) plane having hexagonal structure and the optical and the electrical studies suggest that the films show an average transmission of 70% and a resistivity of the order of 10 -4 Ωcm. On the other hand, the scanning electron microscopy (SEM) images suggest the formation of packed grains having a homogeneous surface. Moreover in order to study the optoelectronic properties of prepared samples, the electronic and optical calculations of the AZO are performed by the first-principles calculations using density functional theory (DFT).

This study provides a technical and financial analysis for the incorporation of a microgrid structure with a wind energy conversion system for producing electricity. This study’s primary aim is to provide solutions for issues that arise when isolated induction generators are employed with microgrids. A closed-loop smart electronic load controller is used to regulate the loads in the system that are supplied by the generation. A switched variable capacitor bank is used to supply reactive power initially during a voltage dip at varying winds and loads to sustain the voltage profile. Additionally, a simple voltage control loop-based controller for the generator side converter maintains the voltage at a steady level. Using HOMER software, an economic study of the suggested wind-based microgrid structure is also presented. A laboratory experimental setup is used to support the MATLAB/Simulink study of the proposed method and its control. The findings back the feasibility of implementing the suggested plan in grid-isolated regions for supplying critical loads.