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Electrostatic Interaction-directed Construction of Hierarchical Nanostructured Carbon Composite with Dual Electrical Conductive Networks for Zinc-ion Hybrid Capacitors with Ultrastability

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energy & Environmental Materials 2024年第1期7卷 184-192页

作者： Changyu Leng Zongbin Zhao Xuzhen Wang Yuliya V.Fedoseeva Lyubov G.Bulusheva Alexander V.Okotrub Jian Xiao Jieshan Qiu State Key Lab of Fine Chemicals School of Chemical EngineeringLiaoning Key Lab for Energy Materials and Chemical Engineering Dalian University of TechnologyDalian 116024China Nikolaev institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences3 Acad.Lavrentiev Ave.Novosibirsk 630090Russia College of Chemical Engineering Beijing University of Chemical Technology Beijing 100029China

Metal-organic framework(MOF)-derived carbon composites have been considered as the promising materials for energy ***,the construction of MOF-based composites with highly controllable mode via the liquid-liquid synthesis method has a great challenge because of the simultaneous heterogeneous nucleation on substrates and the self-nucleation of individual MOF nanocrystals in the liquid ***,we report a bidirectional electrostatic generated self-assembly strategy to achieve the precisely controlled coatings of single-layer nanoscale MOFs on a range of substrates,including carbon nanotubes(CNTs),graphene oxide(GO),MXene,layered double hydroxides(LDHs),MOFs,and SiO_(2).The obtained MOF-based nanostructured carbon composite exhibits the hierarchical porosity(V_(meso)/V_(micro)∶2.4),ultrahigh N content of 12.4 at.%and"dual electrical conductive networks."The assembled aqueous zinc-ion hybrid capacitor(ZIC)with the prepared nanocarbon composite as a cathode shows a high specific capacitance of 236 F g^(-1)at 0.5 A g^(-1),great rate performance of 98 F g^(-1)at 100 A g^(-1),and especially,an ultralong cycling stability up to 230000 cycles with the capacitance retention of 90.1%.This work develops a repeatable and general method for the controlled construction of MOF coatings on various functional substrates and further fabricates carbon composites for ZICs with ultrastability.

关键词： carbon composite electrostatic interaction metal-organic framework coating self-assembly zinc-ion hybrid capacitor

Environmental performance assessments of different methods of coal preparation for use in small-capacity boilers: experiment and theory

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International Journal of Coal Science & Technology 2023年第5期10卷 57-71页

作者： A.N.Kozlov E.P.Maysyuk I.Yu.Ivanova melentiev energy systems institute of siberian branch of the russian academy of sciences Irkutsk130Lermontov664033Russia

The purpose of this article is to receive environmental assessments of combustion of different types of coal fuel depending on the preparation(unscreened,size-graded,briquetted and heat-treated)in automated boilers and boilers with manual *** assessments were made on the basis of data obtained from experimental methods of coal preparation and calculated methods of determining the amount of pollutant and greenhouse gas emissions,as well as the mass of ash and slag *** main pollutants from coal combustion are calculated:particulate matter,benz(a)pyrene,nitrogen oxides,sulfur dioxide,carbon *** the greenhouse gases carbon dioxide is *** a result of conducted research it is shown that the simplest preliminary preparation(size-graded)of coal significantly improves combustion efficiency and environmental performance:emissions are reduced by 13%for hard coal and up to 20%for brown *** introduction of automated boil-ers with heat-treated coal in small boiler facilities allows to reduce emissions and ash and slag waste by 2-3 *** best environmental indicators correspond to heat-treated lignite,which is characterized by the absence of sulfur dioxide emissions.

关键词： Coal preparation Automated and hand-fed coal boilers Environmental performance metrics

Optimization Problem for the Integral Model of Developing systems

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Journal of the Operations Research Society of China 2022年第4期10卷 817-833页

作者： Evgeniia Markova Inna Sidler Victor Trufanov melentiev energy systems institute of siberian branch of the russian academy of sciences Irkutsk664033Russia

This paper addresses an integral model of development a large electric power system using the example of the Unified energy System of *** model takes account of the age structure of the plants main ***,generating equipment is divided into components depending on the types of energy resources *** mathematical model is presented by a system of nonclassical Volterra integral equations of the first *** of the equations describes the balance between the total available capacity of the electric power system,commissioning of new equipment,and dismantling of obsolete *** other equations define the shares of different types of power plants in the total composition of the electric power system *** on the considered model,we set a problem that searches the optimal lifetimes of electric power system capacities for a given demand for *** optimality criterion is a functional reflecting cost of commissioning and operating the *** specifics of the optimization problem are that the optimization parameter is in the lower limit of *** algorithm for solving of this optimal control problem numerically is *** influence of economic indices on the solution to the optimal control problem is *** of the optimal development of the Unified energy System of Russia until 2050 are carried out using real-life data.

关键词： Optimization problem Integral model Lifetime

Development of electric power cooperation in Northeast Asia

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Global energy Interconnection 2019年第1期2卷 1-6页

作者： Nikolai Voropai Sergei Podkovalnikov Lyudmila Chudinova Ksenia Letova (Kushkina) melentiev energy systems institute of siberian branch of the russian academy of sciences 130 Skolkovo institute of Science and Technology Center for Energy Systems

The development of interstate electric ties ISETs and grids(ISGs) is a global process; recently, countries of Northeast Asia(NEA) that were previously very poorly connected have started to study the possibility of constructing ISETs and ISGs. This paper describes the current state of the interstate transmissions in the NEA region, considering the prospective projects of ISETs in NEA. The results of the system optimization study on prospective NEA ISGs are provided. The proposals on the development of electric power cooperation in NEA are formulated.

关键词： In teg rati on Electric power industry Interstate electric ties Power grids Northeast Asia Economic effectiveness

The evolution of interstate power grid formation

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Global energy Interconnection 2021年第4期4卷 335-353页

作者： Nikolai Voropai Sergei Podkovalnikov Lyudmila Chudinova melentiev energy systems institute of siberian branch of the russian academy of sciences 130Lermontov Str.Irkutsk 664033Russia

This study analyzes the process of electric power system integration in various regions *** process is implemented by creating both interstate electric ties and power *** analysis is comprehensive and examines the system,spatial,technical,organizational,and market aspects of the *** countries,including developed countries such as Europe and North America,as well as economically developing countries such as Central America and Africa,are involved in this ***,the rates and scales of electric power integration differ across various regions *** analysis shows that the process of electric power integration,which has decades of history,is still ongoing,despite the growth of other trends,such as the development of distributed *** electricity integration is expected to lead to the formation of a global power interconnection in the long term.

关键词： Interstate electric power grids/interconnections Interstate electric ties

Development of a methodology for assessing the adequacy of electric power systems

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Global energy Interconnection 2022年第5期5卷 543-550页

作者： Dmitry S.Krupenev Denis A.Boyarkin Dmitrii V.Iakubovskii melentiev energy systems institute of siberian branch of the russian academy of sciences Lermontov str.130Irkutsk664033Russia

This study presents the results of a research into the developing a methodology for assessing the adequacy of advanced electric power systems characterized by the integration of various innovative technologies,which complicates their *** methodology development is aimed at solving two main problems:(1)increase the adequacy of modeling the processes that occur in the electric power system and (2)enhance the computational efficiency of the adequacy assessment *** study proposes a new mathematical model to minimize the power shortage and enhance the adequacy of modeling the *** model considers quadratic power transmission losses and network *** computational efficiency of the adequacy assessment methodology is enhanced using efficient random-number generators to form the calculated states of electric power systems and machine learning methods to assess power shortages and other reliability characteristics in the calculated states.

关键词： Electric power systems Adequacy Power shortage minimization Pseudo-and quasi-random number generation Machine learning methods.

Caspian energy Ring: Prospective vision

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Global energy Interconnection 2022年第5期5卷 461-471页

作者： Sergei Podkovalnikov Lyudmila Chudinova Ivan L.Trofimov Leonid Trofimov melentiev energy systems institute of siberian branch of the russian academy of sciences 130Lermontov Str.Irkutsk664033Russia

This paper presents the results of a technical and economic optimization study of the prospects of the Caspian energy Ring(CER),connecting power systems of Russia,countries of the Caucasus,Central Asia,and South *** CER,belonging partly to the emerging Asian Supergrid and partly to the existing European Supergrid,will become a bridge connecting these supergrids,laying the foundation for forming a global energy interconnection in the long *** expansion of carbon-free renewable and nuclear facilities,low-carbon gas-fired power plants,and traditional thermal and hydro energy sources within the CER were considered in this *** positive economic benefits of the creation of the CER are *** characteristics of the potential CER were also estimated.

关键词： Caspian energy Ring Interstate electric power grids Transmission lines Installed capacity Power generation Economic viability.

Corporate governance in generating companies of the russian electric power industry in the context of ESG agenda

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Global energy Interconnection 2022年第5期5卷 512-523页

作者： Galina I.Sheveleva melentiev energy systems institute of siberian branch of the russian academy of sciences 130 Lermontov St.Irkutsk 664033Russia

To address the issues of investment appeal in the russian electric power industry,this study analyzes the dynamics of corporate governance,including permanent redistribution of property and compliance with the russian Corporate Governance Code,in wholesale and territorial-generating *** increasing concentration of property in the hands of the state and its implications for investors are also *** study reveals the violations of essential principles,and the substantial differences in corporate governance practices,in the best-and worst-performing *** standards for better corporate governance practices to benefit the investors in the context of the current Environmental,Social,and corporate Governance(ESG)agenda are *** study provides a new insight at the development of corporate governance in russian power generating companies through property redistribution and compliance with corporate governance principles.

关键词： Corporate governance russian power generating companies ESG agenda

Impact of air drought on photosynthesis efficiency of the siberian crabapple(Malus baccata L. Borkh.) in the forest-steppe zone of Transbaikalia, Russia

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Journal of Arid Land 2019年第2期11卷 255-266页

作者： Alexandr RUDIKOVSKII Elena RUDIKOVSKAYA Lyubov DUDAREVA siberian institute of Plant Physiology and Biochemistry of siberian branch Russian Academy of Sciences

The adaption of photosynthesis, being a key metabolic process, plays an important role in plant resistance to air drought. In this study, the siberian crabapple(Malus baccata L. Borkh.) in the forest-steppe zone of Transbaikalia region, Russia, was subjected to air drought stress and its photosynthesis characteristics were analyzed. The results show that air drought and sufficient soil moisture supply lead to the decrease in the total chlorophyll(Chl) content, while the ratio of Chls to carotenoids is constant in the siberian crabapple tree. The function of photosystem II(PS-II) in the crabapple trees is characterized by a decrease in the fraction of absorbed light energy spent on the photochemical work and an increase in the proportion of non-photosynthetic thermal quenching. These changes indicate the photosynthetic down-regulation that acts as a universal photoprotective mechanism. During the midday hours, the combination of high air temperature and low air humidity leads to the decrease in the maximum photochemical quantum yield of photosystem II(Fv/Fm) and the efficiency of photosynthesis(PABS). The parameters of leaf gas exchange show the significant differences in these values between the control and experimental variants. During the morning hours, the siberian crabapple, growing in the Irkutsk City,assimilates carbon dioxide more intensively. Due to the higher air humidity, the stomata are kept open and the necessary amount of carbon dioxide entries the sites of carboxylation. The low air humidity combined with wind in the experimental variants leads to the unreasonably high water loss in the crabapple leaves by more than 27% as compared to the control variant(Irkutsk City). However, water use efficiency in the morning hours increases during plant photosynthetic processes, i.e., 42% higher than that of control. This,apparently, is a reflection of the adaptation processes of the siberian crabapple to the air drought and parching wind.

关键词： air drought chlorophyll fluorescence leaf gas exchange pigments water use efficiency