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第三届新型太阳能电池学术研讨会

作者：刘艳芳 Xiao Zhou Taihong Zhang Yuzhi Hou Wen Fang Jing Li 云斯宁西安建筑科技大学材料与矿资学院功能材料研究所

Dye-sensitized solar cells(DSSCs) have attracted the most attention due to their unparalleled *** the past 20 years,remarkable advances in DSSCs have been *** date,various counter electrode(CE) materials have been explored to replace the noble Pt in *** transition metal(ETM) carbides,nitrides and oxides have been tested as alternatives to the Pt that are highly required in heterogeneous catalysis and clean energy ***-based compounds were tested for use in the DSSC system as CE ***,WO and WN used as CEs in DSSCs show superior electrocatalytic activity and high PCEs of 6.9%,6.7% and 6.2%,match the performance of DSSCs based on a Pt CE(6.7%).To clarify the mechanism of the catalytic performance of tungsten-based compounds in DSSCs,the first-principle density functional theory calculations(DFT) and the ab-initio Car-Parrinello molecular dynamics(CPMD) simulations were performed.

关键词： dye-sensitized solar cells tungsten-based compounds first-principle density functional theory calculations ab-initio Car-Parrinello molecular dynamics

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Application of tungsten-based compounds in Renewable Energy

Application of Tungsten-Based Compounds in Renewable Energy

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第四届新型太阳能电池学术研讨会

作者：王子齐 Yanfang Liu Wen Fang Chen Zhang Chen Wang Hongfei Xu 云斯宁西安建筑科技大学材料与矿资学院功能材料研究所

Dye-sensitized solar cells(DSCs) have attracted remarkable attention due to their high efficiency, environmentally friendly and low *** an indispensible part of DSCs, the counter electrode(CE) plays a crucial role in high efficient ***, it is significant to develop advanced CE materials for high-performance DSCs, which have considerable catalytic activity and *** improve the degradation efficiency of anaerobic digestion(AD) and enhance biogas production, adding accelerants in AD is an effective technical *** use of transition metal compounds(TMCs) as accelerants in AD can make the waste resource effciently improvable in the biogas production and fertilizer *** previous work demonstrated that WO, WO and WN used as CEs in DSCs show superior electrocatalytic activity for the reduction of I in DSCs and high PCEs of 6.9%, 6.7% and 6.2%, match the performance of DSCs based on a Pt CE(6.7%).In the present work, Compared with the control check(CK, 344/604 mL ·g·VS, 41.53%), substantially higher cumulative biogas production(422-430/590-696 mL·g·VS) and chemical oxygen demand(COD) removal rates(59.28%-67.82%) were achieved using tungsten-based oxides/carbides/Nitrides as accelerants in the AD system.

关键词： tungsten-based compounds catalysts dye-sensitized solar cells anaerobic digestion accelerant

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Applications of optical control materials based on localized surface plasmon resonance effect in smart windows

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tungsten 2024年第4期6卷 711-731页

作者： Na Ta Jing-Yi Huang Shuai He W.Hanggai Luo-Meng Chao College of Science Inner Mongolia University of Science and TechnologyBaotou014010China Fundamental Aspects of Materials and Energy Faculty of Applied SciencesDelft University of Technology2629JBDelftThe Netherlands

The increasing energy consumption in buildings due to cooling and heating,accounting for over one-third of the total energy consumption in society,has become a growing ***,reducing building energy consumption has become an urgent issue for countries *** serve as the primary channel for energy exchange between the indoor and the outdoor *** providing natural lighting for occupants,windows are also the weakest link in terms of energy *** recent years,there have been some new and superior coating glass technologies compared to traditional low-emissivity *** coatings utilize various optical functional materials to regulate the incident sunlight,aiming to save cooling and heating energy ***,such as tungsten-based compounds,vanadium dioxide,lanthanum hexaboride,or copper monosulfide,can absorb near-infrared light to effectively control solar radiation by leveraging the localized surface plasmon resonance(LSPR)effect of *** paper mainly introduces the micro-mechanisms of these materials and provides a detailed summary of the latest advancements in coating *** application and effects of these coatings in building energy conservation are ***,the challenges and prospects of LSPRbased smart windows are *** is expected that this review will provide new insights into the application of smart windows in green buildings.

关键词： tungsten Localized surface plasmon resonance(LSPR) tungsten-based compounds Vanadium dioxide Lanthanum hexaboride Copper monosulfide

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Intrinsic Origin of Superior Catalytic Properties of tungsten-based Catalysts in Dye-sensitized Solar Cells

Intrinsic Origin of Superior Catalytic Properties of Tungste...

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第四届新型太阳能电池学术研讨会

作者：刘艳芳 Xiao Zhou Yuzhi Hou Ziqi Wang Taihong Zhang 云斯宁西安建筑科技大学材料与矿资学院功能材料研究所

Dye-sensitized solar cells(DSSCs) have attracted considerable attention due to their unparalleled merits including low cost, environmental compatibility, and acceptable photoelectric conversion efficiency(PCE). As an essential component of DSSCs, the CE is responsible for collecting electrons from the external circuit and reducing I. To date, various counter electrodes(CEs) have been explored to replace the noble Pt in DSSCs. tungsten(W)-based compounds(oxides, nitrides, carbides and hybrids) as CEs were widely tested in the DSSC because of their excellent properties, such as various sources, low cost, and notable electrocatalytic activity. The DSSCs assembled with I/I redox shuttle, based on WO, WN, WC, and WO CEs, exhibited power conversion efficiencies(PCEs) of 6.69%, 5.97% 5.20%, and 4.69%, respectively;these values were equal to or better than those of DSSCs with Pt CEs(6.52%). To clarify the mechanism of the catalytic performance of W-based CEs in DSSCs, the first-principle density functional theory(DFT) calculation was performed. Electronic density of states(DOS) revealed that the band gaps of WO, WN, WC, and Pt were zero, whereas that of WO was 1.7 e V. Wider band gaps do not facilitate electron conduction as easily as Pt. In addition, the W/O ratio(1:2.72) in WO was greater than that in WO(1:3), and the W/N ratio(2:1) in WN was greater than that in WC(1:1). Higher ratios of W/(O or N) favored the electrocatalytic activity of the CEs in the reduction of I in DSSCs. This is the intrinsic reason why W-based CEs exhibit different catalytic properties in DSSCs. To promote the W-based DSSCs commercial application, the novel systems using Cu-mediated redox shuttles, Y123 dye and D35 dye, should be tested in DSSCs in the future.

关键词： tungsten-based compounds dye-sensitized solar cells counter electrodes first-principle DFT calculations

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