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Selenate-based heterojunction with cobalt-nickel paired site for electrocatalytic oxidation of 5-hydroxymethylfurfural coupling water splitting to produce hydrogen

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Journal of energy Chemistry 2025年第2期101卷 156-162,I0005页

作者： Zhengru Yang Jia Hui Wangxi Fan Pengcheng Liu Chunyong Zhang Shuang Dong Zhou Yang Department of Chemistry and Chemical Engineering &Jiangsu Key Laboratory of Clean Energy Storage and ConversionJiangsu University of TechnologyChangzhou 213001JiangsuChina Engineering Technology and Materials Research Center China Academy of Transportation SciencesBeijing 100029China School of Chemical Engineering and Materials Changzhou Institute of TechnologyChangzhou 213032JiangsuChina

It is very appealing that 5-hydroxymethylfurfural(HMF)is electrocatalytical oxidized as 2,5-furandicarboxylic acid(FDCA)linking to non-classical cathodic hydrogen(H_(2))***,the electrocatalysts for electrocatalytic HMF oxidative reaction(e-HMFOR)have been facing low Faradaic efficiency(FE)and high water splitting ***,we propose a strategy of the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction by constructing a Co-Ni paired site,where the Co site is in charge of adsorbing for HMF while the electrons are transferred to the Ni site,thus giving the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction superior electrocata lytic performances for e-HMFOR and water *** optimizing conditions,the NiSeO_(3)@(CoSeO_(3))_(4)heterojunction has high conversion of 99.7%,high selectivity of 99.9%,and high FE of 98.4%at 1.3 V,as well as low cell voltage of 1.31 V at 10 mA cm^(-2)in 1 M KOH+0.1 M *** study offers a potential insight for e-HMFOR to high value-added FDCA coupling water splitting to produce H_(2)in an economical manner.

关键词： e-HMFOR FDCA Co-Ni paired site Heterojunction Hydrogen evolution

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KPI-based Real-time Situational Awareness for Power Systems with a High Proportion of Renewable energy Sources

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CSEE Journal of Power and energy Systems 2022年第4期8卷 1060-1073页

作者： Tianhan Zhang Shengyuan Liu Weiqiang Qiu Zhenzhi Lin Lingzhi Zhu Zhao Dawei Minhui Qian LI Yang College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Renewable Energy Research Center China Electric Power Research Institute(State Key Laboratory of Operation and Control of Renewable Energy&Storage SystemsJiangsu Engineering Technology Research Center for Energy Storage Conversion and Application)Nanjing 210003China

With the increasing complexity of power systems and the widespread penetration of renewable energy sources(RES),real-time situational awareness for power systems is of great significance for operational *** the impact of RES on power system operations,a situational awareness key performance index(KPI)system for power systems with a high proportion of RES is proposed in this paper,which consists of reserve capacity abundance,ramp resource abundance,center of inertia(COI)frequency deviation,interface power flow margin,synthesized voltage stability,and angle stability ***,the KPIs are synthesized and visualized by the decision tree method and radar chart method,respectively,for monitoring the operation states(i.e,normal,alert,and emergency states)of power systems with a high proportion of *** simulations are conducted in a revised New England 16-machine 68-bus power system and an actual CEPRI-RE power system in the northwest region of China with a high proportion of *** results show that the proposed KPI-based situational awareness method is able to accurately monitor the real-time state of power systems with a high proportion of RES,and can assist power dispatchers to make effective decisions.

关键词： High proportion of renewable energy sources(RES) key performance index(KPI) situational awareness state visualization

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research on Virtual Synchronous Generator Control for Parallel Connection of Multiple Grid-Forming energy storage Converters 9

Research on Virtual Synchronous Generator Control for Parall...

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9th Asia Conference on Power and Electrical engineering, ACPEE 2024

作者： Chen, Guowei Yang, Bo Li, Haoyuan Wang, Hui Wang, Baonan Res. Center for Energy Storage Conversion and Application China Electric Power Research Institute Jiangsu Engineering Technology Nanjing China Shanghai University of Electric Power College of Computer Science and Technology Shanghai China

ISBN: (纸本)9798350309638

The parallel connection of converters facilitates the modularization of the operating system, making the internal structure of the system more flexible and variable. However, due to the low damping and low inertia characteristics of power electronic equipment, which may be certain risks when the energy storage system is connected to the power grid through a power conversion system. To address this issue, the control strategy based on virtual synchronous machine control technology for grid-forming energy storage converters is proposed, which can improve system inertia and damping. Secondly, the conduct research on the off grid control of grid type energy storage converters. Finally, the proposed control strategy was validated through simulation experiments. © 2024 IEEE.

关键词： Synchronous generators

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A distributed secondary regulation strategy for alternating-current microgrids with actuator bias faults

A distributed secondary regulation strategy for alternating-...

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2023 jiangsu Annual Conference on Automation, JACA 2023

作者： Li, Guanjun Qiu, Xuechao Wang, Ying Li, Haoyuan Wang, Xiangyu Jiangsu Engineering Technology Research Center for Energy Storage Conversion Application China Electric Power Research Institute Nanjing210003 China School of Automation Southeast University Nanjing210096 China

ISBN: (纸本)9781839539848

In this paper, a distributed secondary regulation strategy is investigated for alternating-current microgrids with actuator bias faults. Under the actuator faults, a distributed secondary regulation strategy is proposed, which achieves voltage and frequency regulations, as well as power sharing. Meanwhile, by the combination of integral-Type nonsingular terminal slidingmode control and nonlinear observer methods together, unknown and time varying actuator bias faults are estimated and compensated in finite time. Finally, some simulation results are given to validate the proposed strategy. © The Institution of engineering & technology 2023.

关键词： Actuators

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Coordinated control strategy for frequency support of wind farm augmented with energy storage system 3

Coordinated control strategy for frequency support of wind f...

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2024 3rd International Conference on New energy, energy storage and Power engineering, NESP 2024

作者： Zhu, Shaojie Tao, Yibin Li, Guanjun Xu, Zheng Zhang, Jianzhong Jiangsu Energy Storage Variable Current and Application Engineering Technology Research Center China Electric Power Research Institute Jiangsu Nanjing210003 China School of Electrical Engineering Southeast University Jiangsu Nanjing210096 China

Owing to the uncontrollable and intermittent nature of wind resources, the frequency support capability of wind turbine generators has strong uncertainty. Employing energy storage systems could improve the frequency support capacity and stability of wind farms. This paper proposes a coordinated control strategy wherein wind power and energy storage collaboratively engage in frequency support operations. At the wind farm and energy storage level, the energy storage gives priority to providing the basic part of the incremental active power, and the wind turbine kinetic energy only takes the deficit. At the wind turbine level, the active power support capacity (APSC) of doubly fed induction generator (DFIG) units is proposed, based on which the coordinated control among wind turbines is designed. Simulation results are presented to validate the effectiveness of the proposed methodology. © Published under licence by IOP Publishing Ltd.

关键词： Windmill

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Recent progress on efficient perovskite/organic tandem solar cells

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Journal of energy Chemistry 2023年第8期83卷 158-172,I0006页

作者： Rongbo Wang Meidouxue Han Ya Wang Juntao Zhao Jiawei Zhang Yi Ding Ying Zhao Xiaodan Zhang Guofu Hou Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterSolar Energy Conversion CenterNankai UniversityTianjin 300350China Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350China Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300350China

The concept of tandem solar cells(TSCs) is an effective way to substantially further improve the efficiency of solar cells. The excellent optoelectronic properties and bandgap tunability of perovskites make them promising for constructing efficient TSCs. Currently, TSCs based on perovskite have been extensively studied. Besides, the performance of organic solar cells has been greatly improved recently due to the wider and more efficient spectral utilization. Accordingly, research on perovskite/organic TSCs has garnered significant attention. It has potential application advantages in emerging fields such as wearable devices by virtue of flexibility. In addition, orthogonal solvents can be adopted to realize the separate preparation of subcells with the solution method, which greatly reduces fabrication complexity;moreover, fabrication with less equipment significantly cuts down the device cost. Meanwhile, organics with more adjustability on the optoelectronic properties provide more tuning strategies for high-performance perovskite/organic TSCs. However, comprehensive and timely reviews on the perovskite/organic TSCs are deficient. Therefore, we expect to accomplish a review on this innovative TSCs to facilitate researchers with a deeper understanding of perovskite/organic TSCs. Herein, we firstly review the significant progress of perovskite and organic solar cells. Then, current achievements of perovskite/organic TSCs are summarized and introduced with a particular focus on the device structure design. Finally, we discuss existential challenges and propose effective strategies for future engineering.

关键词： Tandem solar cells Perovskite Organic solarcells Interconnecting layer

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NO reduction by carbon-based gases based on coal gasification fractions:NO reduction intermediate identification and kinetic analysis

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Frontiers of Environmental Science & engineering 2025年第3期19卷 175-189页

作者： Xiang Zhang Jian Tian Tanghui Hu Guangyong Yue Xianlong Liu Wen Zhou Xiaohong Liu Xinye Wang Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Engineering Research Center for Green Industrialization Technology of Industrial WasteSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China Hubei Huda Tianshu New Energy Materials Industrial Research and Design Institute Co. Ltd.Wuhan 430062China Wuhan Tianshu Dust Removal Equipment Co. Ltd.Wuhan 430062China Engineering Laboratory for Energy System Process Conversion&Emission Control Technology of Jiangsu Province School of Energy and Mechanical EngineeringNanjing Normal UniversityNanjing 210042China

Combining pulverized coal gasifiers with cement kiln production is promising for application in low-cost and efficient NO *** paper presents a pulverized coal gasifier catalytic denitration technique and investigates the homogeneous reduction(by CO and CH_(4))and heterogeneous catalytic reduction(by coke,CaO,MgO,and Fe_(2)O_(3))of NO.A combination of Chemkin simulations and fixed-bed experiments is used to elucidate the reaction pathways and key intermediates of NO reduction by carbon-based *** addition,the activation energies for different catalyst combinations were analyzed via reaction *** results demonstrate that the presence of small amounts of O_(2) inhibits NO reduction by CO but promotes NO reduction by CH_(4).The NCO·radical is essential for the NO reduction process,and the generation of this radical depends on the CH_(4) cleavage intermediate and O·*** and Fe_(2)O_(3) exhibit more significant catalytic effects on NO reduction by carbon-based gases than the other catalysts *** presence of a small amount of O_(2) in the reacting gas mixtures facilitates the NO reduction *** activation energy is reduced to 1.02 kJ/mol,and the NO conversion reaches 99.80%when the catalyst is C+CaO+MgO+Fe_(2)O_(3) and the gas composition is CO+CH_(4)+O_(2).This work provides theoretical support and data recommendations for the use of pulverized coal gasifiers for the denitrification of cement kilns.

关键词： Carbon-based gas Catalytic denitration Coke Kinetic analysis Reaction mechanism

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Plant-leaf-inspired MXene-silk composite for intelligent solar steam generation combined with mechanical actuation

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Nano research 2023年第5期16卷 7792-7800页

作者： Yongqiang Qian Zhiling Luo Yi Wang Wei Zhang Luzhuo Chen Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and EnergyFujian Normal UniversityFuzhou 350117China Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering Fuzhou 350117China Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage Fuzhou 350117China

Solar steam generators based on photothermal materials are important in producing fresh ***,conventional solar steam generators are difficult to self-adapt to the complex external environment as ***,inspired by the plant leaf,we propose a photothermal composite based on MXene and silk to add more *** one hand,the composite achieves an evaporation rate of 1.51 kg·m^(−2)·h^(−1)and a conversion efficiency of 86.9%under a solar intensity of 1 kW·m^(−2),mimicking the water transpiration of plant *** the other hand,the MXene-silk-based actuator shows a maximum bending curvature of 0.91 cm^(−1)under a solar intensity of 5 kW·m^(−2).Furthermore,an intelligent solar system is constructed utilizing the synergy of solar steam generator and actuator,which advances the research from the material level to the system *** the behavior of plant leaf,the system can automatically open during the day to generate steam and fresh *** at night or in bad weather,it will automatically close to prevent external pollution such as dust,achieving intelligent *** research will have good application prospects in less developed ***,it also provides a certain reference value for exploring multi-functional photothermal devices in the future.

关键词： MXene silk solar steam generator photothermal actuator multi-functional

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Visual Performance Analysis of Off-Grid Three-Phase Inverters Based on D-Partition Method

Visual Performance Analysis of Off-Grid Three-Phase Inverter...

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2022 jiangsu Annual Conference on Automation, JACA 2022

作者： Li, Guanjun Huang, Saijin Li, Haoyuan Wang, Xiangyu Jiangsu Engineering Technology Research Center for Energy Storage Conversion Application China Electric Power Research Institute Nanjing China School of Automation Southeast University Nanjing China

ISBN: (纸本)9781839538476

This paper investigates the performance analysis problem of off-grid three-phase inverters under the conventional double closed-loop PI control. A visual and general performance analysis scheme is proposed on the basis of the D-partition method, devoted to the control parameter turning for high-performance three-phase inverters. The proposed analysis scheme is able to draw the whole stable region related to the control parameters. Moreover, by embedding a gain-phase margin tester into the inverter system, the stable region under specified frequency-domain specifications is obtained, which facilitates the parameter selection for specific performance requirements. Copyright© JACA 2022 All rights reserved.

关键词： Frequency domain analysis

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A water-stable organolead iodide material for overall photocatalytic CO_(2) reduction

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Nano research 2022年第12期15卷 10084-10089页

作者： Rong Chen Guodong Gao Jingshan Luo Institute of Photoelectronic Thin Film Devices and Technology Solar Energy Research CenterKey Laboratory of Photoelectronic Thin Film Devices and Technology of TianjinMinistry of Education Engineering Research Center of Thin Film Photoelectronic TechnologyRenewable Energy Conversion and Storage CenterNankai UniversityTianjin300350China

The utilization of perovskites as photocatalysts to convert CO_(2) into fuels and chemicals has received wide attention ***,their instability in water hinders their long-term application for overall photocatalytic CO_(2) ***,we integrate the water-stable perovskite-like organolead iodide crystalline material[Pb8I8(H2O)3]8+[-O2C(CH2)4CO_(2)-]4(TJU-16)with Au co-catalyst for photocatalytic CO_(2) reduction in aqueous solution without sacrificial *** the AM 1.5 G simulated illumination,the TJU-16 with 0.19 wt.‰ Au co-catalyst steadily generated electrons for CO_(2) reduction reaction,which was 2.2 times of pure *** Au0.19/TJU-16 catalyzed CO_(2) reduction at a rate of 84.2μmol·g-1·h-1,and achieved a solar-to-fuel(STF)conversion efficiency of 0.034%.Our work will motivate the rational design of water-stable perovskite-like materials for photocatalytic applications.

关键词： water-stable organolead iodide photocatalytic CO_(2)conversion

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