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Thermodynamic assessment of hydrogen production via solar thermochemical cycle based on MoO

Jiahui JIN, Lei WANG, Mingkai FU, Xin LI, Yuanwei LU

《能源前沿（英文）》 2020年第14卷第1期页码 71-80 doi: 10.1007/s11708-019-0652-9

摘要： Inspired by the promising hydrogen production in the solar thermochemical (STC) cycle based on non-stoichiometric oxides and the operation temperature decreasing effect of methane reduction, a high-fuel-selectivity and CH -introduced solar thermochemical cycle based on MoO /Mo is studied. By performing HSC simulations, the energy upgradation and energy conversion potential under isothermal and non-isothermal operating conditions are compared. In the reduction step, MoO : CH = 2 and 1020 K< <1600 K are found to be most favorable for syngas selectivity and methane conversion. Compared to the STC cycle without CH , the introduction of methane yields a much higher hydrogen production, especially at the lower temperature range and atmospheric pressure. In the oxidation step, a moderately excessive water is beneficial for energy conversion whether in isothermal or non-isothermal operations, especially at H O: Mo= 4. In the whole STC cycle, the maximum non-isothermal and isothermal efficiency can reach 0.417 and 0.391 respectively. In addition, the predicted efficiency of the second cycle is also as high as 0.454 at = 1200 K and = 400 K, indicating that MoO could be a new and potential candidate for obtaining solar fuel by methane reduction.

关键词： MoO₂/Mo based on solar thermochemical cycle methanothermal reduction isothermal and non-isothermal operation syngas and hydrogen production thermodynamic analysis

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Piezocatalytic performance of FeO−BiMoO catalyst for dye degradation

《化学科学与工程前沿（英文）》 2023年第17卷第6期页码 716-725 doi: 10.1007/s11705-022-2265-9

摘要： A Fe₂O₃−Bi₂MoO₆ heterojunction was synthesized via a hydrothermal method. Scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray, powder X-ray diffraction, Fourier transform infrared spectroscopy and ultra-violet−visible near-infrared spectrometry were performed to measure the structures, morphologies and optical properties of the as-prepared samples. The various factors that affected the piezocatalytic property of composite catalyst were studied. The highest rhodamine B degradation rate of 96.6% was attained on the 3% Fe₂O₃−Bi₂MoO₆ composite catalyst under 60 min of ultrasonic vibration. The good piezocatalytic activity was ascribed to the formation of a hierarchical flower-shaped microsphere structure and the heterostructure between Fe₂O₃ and Bi₂MoO₆, which effectively separated the ultrasound-induced electron–hole pairs and suppressed their recombination. Furthermore, a potential piezoelectric catalytic dye degradation mechanism of the Fe₂O₃−Bi₂MoO₆ catalyst was proposed based on the band potential and quenching effect of radical scavengers. The results demonstrated the potential of using Fe₂O₃−Bi₂MoO₆ nanocomposites in piezocatalytic applications.

关键词： piezocatalysis Fe₂O₃−Bi₂MoO₆ dye decomposition ultrasonic vibration

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SiO2sub> passivation layer grown by liquid phase deposition for silicon solar cell application

Yanlin CHEN,Sihua ZHONG,Miao TAN,Wenzhong SHEN

《能源前沿（英文）》 2017年第11卷第1期页码 52-59 doi: 10.1007/s11708-016-0429-3

摘要： Surface passivation is one of the primary requirements for high efficient silicon solar cells. Though the current existed passivation techniques are effective, expensive equipments are required. In this paper, a comprehensive understanding of the SiO passivation layer grown by liquid phase deposition (LPD) was presented, which was cost-effective and very simple. It was found that the post-annealing process could significantly enhance the passivation effect of the LPD SiO film. Besides, it was revealed that both chemical passivation and field-effect passivation mechanisms played important roles in outstanding passivation effect of the LPD SiO film through analyzing the minority carrier lifetime and the surface recombination velocity of n-type and p-type silicon wafers. Although the deposition parameters had little influence on the passivation effect, they affected the deposition rate. Therefore, appropriate deposition parameters should be carefully chosen based on the compromise of the deposition rate and fabrication cost. By utilizing the LPD SiO film as surface passivation layer, a 19.5%-efficient silicon solar cell on a large-scale wafer (156 mm × 156 mm) was fabricated.

关键词： Si solar cell passivation SiO₂ liquid phase deposition carrier lifetime

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太阳能技术对我国未来减排CO2sub> 的贡献

赵玉文

《中国工程科学》 2003年第5卷第4期页码 38-40

摘要：

在“我国后续能源发展战略研究”基础上对太阳能技术在我国未来减排CO2sub>中的作用进行了估计，结果表明，在2010年后太阳能技术对CO2sub

关键词：太阳能，CO2减排

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Revealing the GHG reduction potential of emerging biomass-based CO utilization with an iron cycle system

《环境科学与工程前沿（英文）》 2023年第17卷第10期 doi: 10.1007/s11783-023-1727-8

摘要：

● Greenhouse gas mitigation by biomass-based CO₂ utilization with a Fe cycle system.

关键词： Carbon dioxide utilization Hydrothermal reactions Biomass-based CO₂ reduction Simulation Ex-ante LCA

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Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

《化学科学与工程前沿（英文）》 2023年第17卷第12期页码 1937-1948 doi: 10.1007/s11705-023-2353-5

摘要： In this study, Bi₂MoO₆ with adjustable rich oxygen vacancies was prepared by a novel and simple solvothermal-photoreduction method which might be suitable for a large-scale production. The experiment results show that Bi₂MoO₆ with rich oxygen vacancies is an excellent photocatalyst. The photocatalytic ability of BMO-10 is 0.3 and 3.5 times higher than that of the pristine Bi₂MoO₆ for Rhodamine B degradation and Cr(VI) reduction, respectively. The results display that the band energy of the samples with oxygen vacancies was narrowed and the light absorption was broadened. Meanwhile, the efficiency of photogenerated electron-holes was increased and the separation and transfer speed of photogenerated carriers were improved. Therefore, this work provides a convenient and efficient method to prepare potential adjustable oxygen vacancy based photocatalysts to eliminate the pollution of dyes and Cr(VI) in water.

关键词： Bi₂MoO₆ oxygen vacancies photoreduction Cr(VI) RhB

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Corrosion behavior of Fe–Cr–Ni based alloys exposed to molten MgCl2sub>–KCl–NaCl salt with over-added

《化学科学与工程前沿（英文）》 2023年第17卷第10期页码 1608-1619 doi: 10.1007/s11705-023-2349-1

摘要： MgCl₂–NaCl–KCl salts mixture shows great potential as a high-temperature (> 700 °C) thermal energy storage material in next-generation concentrated solar power plants. Adding Mg into molten MgCl₂–NaCl–KCl salt as a corrosion inhibitor is one of the most effective and cost-effective methods to mitigate the molten salt corrosion of commercial Fe–Cr–Ni alloys. However, it is found in this work that both stainless steel 310 and Incoloy 800H samples were severely corroded after 500 h immersion test at 700 °C when the alloy samples directly contacted with the over-added Mg in the liquid form. The corrosion attack is different from the classical impurity-driven corrosion in molten chloride salts found in previous work. Microscopic analysis indicates that Ni preferentially leaches out of alloy matrix due to the tendency to form MgNi₂/Mg₂Ni compounds. The Ni-depletion leads to the formation of a porous corrosion layer on both alloys, with the thickness around 204 µm (stainless steel 310) and 1300 µm (Incoloy 800H), respectively. These results suggest that direct contact of liquid Mg with Ni-containing alloys should be avoided during using Mg as a corrosion inhibitor for MgCl₂–NaCl–KCl or other chlorides for high temperature heat storage and transfer.

关键词： concentrated solar power (CSP) Mg corrosion inhibitor Mg–Ni intermetallic salt purification thermal energy storage (TES)

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基于Cu(In,Ga)Se2sub> 低成本薄膜的光伏技术的进展

Powalla Michael,Paetel Stefan,Hariskos Dimitrios,Wuerz Roland,Kessler Friedrich,Lechner Peter,Wischmann Wiltraud,Magorian Friedlmeier Theresa

《工程（英文）》 2017年第3卷第4期页码 445-451 doi: 10.1016/J.ENG.2017.04.015

摘要：

本文讨论了基于Cu(In,Ga)Se 2sub> (CIGS) 复合薄膜半导体材料的光伏（PV）技术。

关键词：薄膜光伏太阳能柔性 Cu(In Ga)Se2sub>

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碱金属掺杂对CIGS 薄膜及电池器件的影响

孙云,林舒平,李伟,程世清,张运祥,刘一鸣,刘玮

《工程（英文）》 2017年第3卷第4期页码 452-459 doi: 10.1016/J.ENG.2017.04.020

摘要：

本文总结了Cu(In, Ga)Se2sub> (CIGS) 电池中掺杂碱金属的发展历史和一些重要成果，综述了碱金属掺杂方式对CIGS 吸收层及器件性能的影响。通过分析由(NaF+KF)-PDT 导致的CIGS 表面结构及电学性能的改变，我们提出并解释了如下几个问题：①在低温沉积CIGS 薄膜过程中，Na 促进了CuInSe2sub>的优先形成，排挤Ga 向Mo 衬底扩散，造成CIGS 薄膜的分层现象；② Na 原子钝化CIGS 晶界及表面缺陷从而提高空穴载流子浓度的相关机制；③过渡层减薄提高了短路电流（JSCsub>）而不产生开路电压（VOCsub>）损失，这不仅归因于化学浴沉积初期过渡层较好的包覆性，还在于受主缺陷

关键词：碱金属 Cu(In Ga)Se2sub> 薄膜太阳能电池 PDT

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Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

《能源前沿（英文）》 2021年第15卷第4期页码 832-841 doi: 10.1007/s11708-021-0777-5

摘要： The supercritical carbon dioxide (SCO₂) Brayton cycle has become an ideal power conversion system for sodium-cooled fast reactors (SFR) due to its high efficiency, compactness, and avoidance of sodium-water reaction. In this paper, the 1200 MW_e large pool SFR (CFR1200) is used as the heat source of the system, and the sodium circuit temperature and the heat load are the operating boundaries of the cycle system. The performance of different SCO₂ Brayton cycle systems and changes in key equipment performance are compared. The study indicates that the inter-stage cooling and recompression cycle has the best match with the heat source characte-ristics of the SFR, and the cycle efficiency is the highest (40.7%). Then, based on the developed system transient analysis program (FR-Sdaso), a pool-type SFR power plant system analysis model based on the inter-stage cooling and recompression cycle is established. In addition, the matching between the inter-stage cooling recompression cycle and the SFR during the load cycle of the power plant is studied. The analysis shows that when the nuclear island adopts the flow-advanced operation strategy and the carbon dioxide flowrate in the SCO₂ power conversion system is adjusted with the goal of maintaining the sodium-carbon dioxide heat exchanger sodium side outlet temperature unchanged, the inter-stage cooling recompression cycle can match the operation of the SFR very well.

关键词： sodium-cooled fast reactor (SFR) supercritical carbon dioxide (SCO₂) brayton cycle load cycle

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Lifeng Zhang, Yifei Song, Weiping Wu, Robert Bradley, Yue Hu, Yi Liu, Shouwu Guo

《化学科学与工程前沿（英文）》 2021年第15卷第1期页码 156-163 doi: 10.1007/s11705-020-1986-x

摘要： Unique self-assembled iron(II) molybdenum(IV) oxide (Fe Mo O ) mesoporous hollow spheres have been facilely constructed the bubble-template-assisted hydrothermal synthesis method combined with simple calcination. The compact assembly of small nanoparticles on the surface of the hollow spheres not only provides more active sites for the Fe Mo O , but also benefits the stability of the hollow structure, and thus improved the lithium storage properties of Fe Mo O . The Fe Mo O mesoporous hollow spheres exhibit high initial discharge and charge capacities of 1189 and 997 mA∙h∙g respectively, as well as good long-term cycling stability (866 mA∙h∙g over 70 cycles) when used as a lithium-ion battery anode. This feasible material synthesis strategy will inspire the variation of structural design in other ternary metal molybdates.

关键词： molybdates Fe₂Mo₃O₈ hollow spheres lithium ion batteries anodes

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人工与自然再利用CO2sub>进行DME生产：我们有更紧密的合作吗？

Martín Mariano

《工程（英文）》 2017年第3卷第2期页码 166-170 doi: 10.1016/J.ENG.2017.02.002

摘要：

这项工作使用数学优化方法来分析和比较以人工方式捕获二氧化碳（CO 2 sub>）或以木质纤维素形式自然捕获的CO 2 sub>的设施。自然界中，植物通过光合作用捕获CO 2 sub>以生长。这里讨论的第一个过程的设计基于上层结构优化方法，以便选择将木质纤维素生物质转化为DME的技术。或者，可以捕获CO 2 sub>并用于通过氢化生产DME。氢（H 2 sub>）是通过利用太阳能将水分解而产生的。

关键词：太阳能，光伏，集中太阳能，生物质，水电解，二甲醚

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A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

《能源前沿（英文）》 2016年第10卷第3期页码 347-354 doi: 10.1007/s11708-016-0403-0

摘要： The major portion of energy in a building is consumed by heating, ventilating, and air-conditioning (HVAC). The traditional heating and cooling systems contribute greatly to the emission of greenhouse gases, especially carbon dioxide. Four different ways, i.e., Trombe wall, solar chimney, unglazed transpired solar façade, and solar roof, are adopted for solar heating. Similarly, two major ways, i.e., evaporative cooling and building integrated evaporative cooling are adopted for cooling of the building. Therefore, an attempt has been made in this paper to compile the developments of solar heating and cooling technologies in a building.

关键词： HVAC heating cooling solar heating carbon dioxide (CO₂) emissions

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Cyanobacterial photo-driven mixotrophic metabolism and its advantages for biosynthesis

Ni Wan,Mary Abernathy,Joseph Kuo-Hsiang Tang,Yinjie J. Tang,Le You

《化学科学与工程前沿（英文）》 2015年第9卷第3期页码 308-316 doi: 10.1007/s11705-015-1521-7

摘要： Cyanobacterium offers a promising chassis for phototrophic production of renewable chemicals. Although engineered cyanobacteria can achieve similar product carbon yields as heterotrophic microbial hosts, their production rate and titer under photoautotrophic conditions are 10 to 100 folds lower than those in fast growing Cyanobacterial factories face three indomitable bottlenecks. First, photosynthesis has limited ATP and NADPH generation rates. Second, CO fixation by ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) has poor efficiency. Third, CO mass transfer and light supply are deficient within large photobioreactors. On the other hand, cyanobacteria may employ organic substrates to promote phototrophic cell growth, N fixation, and metabolite synthesis. The photo-fermentations show enhanced photosynthesis, while CO loss from organic substrate degradation can be reused by the Calvin cycle. In addition, the plasticity of cyanobacterial pathways (e.g., oxidative pentose phosphate pathway and the TCA cycle) has been recently revealed to facilitate the catabolism. The use of cyanobacteria as “green ” could be a promising route to develop robust photo-biorefineries.

关键词： CO₂mass transfer N₂ fixation photosystem RuBisCO the TCA cycle

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Real drive cycles analysis by ordered power methodology applied to fuel consumption, CO

Pol Masclans Abelló, Vicente Medina Iglesias, M. Antonia de los Santos López, Jesús Álvarez-Flórez

《环境科学与工程前沿（英文）》 2021年第15卷第1期 doi: 10.1007/s11783-020-1296-z

摘要： Abstract • New method named CAbOP is presented based on ordering data according to power. • Three emission models are used and their emission results compared. • Emissions data are analyzed in real driving cycles under CAbOP criteria. • Methodology to collect data and reconstruct lost data in real urban driving cycles. In this work three fuel consumption and exhaust emission models, ADVISOR, VT-MICRO and the European Environmental Agency Emission factors, have been used to obtain fuel consumption (FC) and exhaust emissions. These models have been used at micro-scale, using the two signal treatment methods presented. The manuscript presents: 1) a methodology to collect data in real urban driving cycles, 2) an estimation of FC and tailpipe emissions using some available models in literature, and 3) a novel analysis of the results based on delivered wheel power. The results include Fuel Consumption (FC), CO2, NOx and PM10 emissions, which are derived from the three simulators. In the first part of the paper we present a new procedure for incomplete drive cycle data treatment, which is necessary for real drive cycle acquisition in high density cities. Then the models are used to obtain second by second FC and exhaust emissions. Finally, a new methodology named Cycle Analysis by Ordered Power (CAbOP) is presented and used to compare the results. This method consists in the re-ordering of time dependant data, considering the wheel mechanical power domain instead of the standard time domain. This new strategy allows the 5 situations in drive cycles to be clearly visualized: hard breaking zone, slowdowns, idle or stop zone, sustained speed zone and acceleration zone. The complete methodology is applied in two real drive cycles surveyed in Barcelona (Spain) and the results are compared with a standardized WLTC urban cycle.

关键词： Cycle Analysis by Ordered Power (CAbOP) Micro and macro models Real drive cycle NO_x/PM₁₀/CO₂ emissions Wheel mechanical power domain Worldwide Harmonized Light-Duty Vehicles Test Cycle (WLTC)

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标题作者时间类型操作

Thermodynamic assessment of hydrogen production via solar thermochemical cycle based on MoO

Jiahui JIN, Lei WANG, Mingkai FU, Xin LI, Yuanwei LU

期刊论文

Piezocatalytic performance of FeO−BiMoO catalyst for dye degradation

期刊论文

SiO2sub> passivation layer grown by liquid phase deposition for silicon solar cell application

Yanlin CHEN,Sihua ZHONG,Miao TAN,Wenzhong SHEN

期刊论文

太阳能技术对我国未来减排CO2sub> 的贡献

赵玉文

期刊论文

Revealing the GHG reduction potential of emerging biomass-based CO utilization with an iron cycle system

期刊论文

Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

期刊论文

Corrosion behavior of Fe–Cr–Ni based alloys exposed to molten MgCl2sub>–KCl–NaCl salt with over-added

期刊论文

基于Cu(In,Ga)Se2sub> 低成本薄膜的光伏技术的进展

Powalla Michael,Paetel Stefan,Hariskos Dimitrios,Wuerz Roland,Kessler Friedrich,Lechner Peter,Wischmann Wiltraud,Magorian Friedlmeier Theresa

期刊论文

碱金属掺杂对CIGS 薄膜及电池器件的影响

孙云,林舒平,李伟,程世清,张运祥,刘一鸣,刘玮

期刊论文

Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

期刊论文

Lifeng Zhang, Yifei Song, Weiping Wu, Robert Bradley, Yue Hu, Yi Liu, Shouwu Guo

期刊论文

人工与自然再利用CO2sub>进行DME生产：我们有更紧密的合作吗？

Martín Mariano

期刊论文

A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

期刊论文

Cyanobacterial photo-driven mixotrophic metabolism and its advantages for biosynthesis

Ni Wan,Mary Abernathy,Joseph Kuo-Hsiang Tang,Yinjie J. Tang,Le You

期刊论文

Real drive cycles analysis by ordered power methodology applied to fuel consumption, CO

Pol Masclans Abelló, Vicente Medina Iglesias, M. Antonia de los Santos López, Jesús Álvarez-Flórez

期刊论文

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