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Journal of energy Chemistry 2022年第9期31卷 217-240,I0007页

作者： Bibi Ruqi Mrinal Kanti Kabiraz Jong Wook Hong Sang-Il Choi Department of Chemistry and green-Nano Materials Research Center Kyungpook National UniversityDaegu 41566Republic of Korea Department of hydrogen&renewable energy Kyungpook National UniversityDaegu 41566Republic of Korea Department of Chemistry University of UlsanUlsan 44776Republic of Korea

Two-dimensional(2D) transition metal dichalcogenides(TMDs) have emerged as promising alternatives to the platinum-based catalysts for hydrogen evolution reaction(HER). The edge site of these2D materials exhibits HER-active properties, whereas the large-area basal plane is ***, recent studies and methodologies have been investigated to improve the performance of TMD-based materials by activating inactive sites through elemental doping strategies. In this review,we focus on the metal and non-metal dopant effects on group VI TMDs such as MoS_(2) MoSe_(2) WS_(2)and WSe_(2) for promoting HER performances in acidic electrolytes. A general introduction to the HER is initially provided to explain the parameters in accessing the catalytic performance of dopedTMDs. Then, synthetic methods for doped-TMDs and their HER performances are introduced in order to understand the effect of various dopants including metallic and non-metallic elements. Finally, the current challenges and future opportunities are summarized to provide insights into developing highly active and stable doped-TMD materials and valuable guidelines for engineering TMD-based nanocatalysts for practical water splitting technologies.

关键词： 2D materials Transition metal dichalcogenides Dopant effect Catalytic surface hydrogen evolution reaction

Can Brazil Become a green hydrogen Powerhouse?

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Journal of Power and energy Engineering 2020年第11期8卷 21-32页

作者： Rafael Kelman Luana de S. Gaspar Florian S. Geyer Luiz A. N. Barroso Mario V. F. Pereira PSR-energy Consulting and Analytics Rio de Janeiro Brazil consultant of renewable energy and green hydrogen MSc/VU Amsterdam and MBA in Renewables/Beuth University Berlin Germany

This paper assesses the feasibility of green hydrogen production in Brazil. By green hydrogen, it is meant the hydrogen produced by the electrolysis of water by consuming electricity produced by renewable sources. The country has large areas with high solar irradiation and favorable wind velocities that help to make wind power and solar PV economical alternatives. Other factors include lower investments and lower grid integration cost with respect to global average, because of the large share of hydropower. As known, hydro plants respond well to the short-term variability of renewable production. Local regulations also incentivize renewable energy. For example, it is possible, according to market rules, for a hydrogen producer to sign a financial Power Purchase Agreement (PPA) contract with a producer or trader to secure a firm, renewable energy supply for the electrolysis process. This market-driven factor, and other key factors, such as low price of electricity, are considered in an economic feasibility model. Results from this model suggest that Brazil could become a green hydrogen powerhouse for the internal market and potential exports to Germany and other European countries.

关键词： green hydrogen Strategy Brazil Export

Forward perspective on the development and strategic pathway of green hydrogen in China

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Clean energy 2023年第1期7卷 1-7页

作者： Guoyue Liu China energy Investment Group Beijing100011China China hydrogen Alliance Beijing100007China

Fundamental transformations are taking place in the areas of energy structure on the supply side and on the energy-consumption side towards clean,low-carbon and safe ***,a new energy system is being constructed with renewable energy as its core in China with energy transition and‘carbon peak and carbon neutral’as the overall ***’s hydrogen-industry plan,‘Mid-to-long term hydrogen industry development plan(2021-2035)’,has an emphasis on hydrogen generation by using renewable energies as the centre piece,which points in the right direction for hydrogen’s green *** this paper,the current status of China’s hydrogen industry is analysed;strategic needs for green hydrogen’s development and its hurdles in its paths are sorted *** demonstration at provincial levels,development of a‘great hydrogen base’and the green-hydrogen development path by gradual substitution with renewable hydrogen are ***-up hydrogen production,expanded consumer hydrogen usage and established hydrogen commodity exchange are recommended to safeguard its development and promote its high-quality development in China.

关键词： carbon-neutral green hydrogen renewable hydrogen 100 GW

Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期 21-25页

作者： Leyu Liu Zhaoming Xia Zeyu Wang Yinjuan Chen Hai Xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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Exploring commercial water electrolyser systems:a data-based analysis of product characteristics

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Clean energy 2024年第1期8卷 126-133页

作者： Xin Jin Shi You Marianne Petersen Jonathan Riofrio Soumya Thakur Chresten Træholt Zhijian Feng Department of Wind and energy Systems Technical University of Denmark2800 Kgs.LyngbyDenmark Siemens Gamesa renewable energy A/S 7330 BrandeDenmark

The urgency for energy transition is evident through the increasing demand for new technologies such as water electrolysers(WEs),which have the potential to generate green hydrogen using renewable *** paper aims to provide a comprehensive overview of the technical capabilities of commercially available WE system *** analysis is based on publicly accessible data gathered from 28 WE manufacturers worldwide with a total of 186 products,focusing on technology types and various technical characteristics of each WE system,including capacity,footprint,hydrogen output pressure,hydrogen purity and conversion *** analysis reveals that the current WE system solutions in the market exhibit diverse and varied ***,there is a lack of standardized product specifications adopted by *** underscores the urgent need for the development of frameworks and *** such standards is crucial for enhancing clarity and understanding,facilitating efficient comparisons and selection processes,and supporting the future advancement of WE technologies and WE-enabled Power-to-X applications on a global scale.

关键词： data analysis hydrogen Power-to-X standards water electrolyser system

Catalytic steam reforming of tar for enhancing hydrogen production from biomass gasification:a review

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Frontiers in energy 2020年第3期14卷 545-569页

作者： Ru Shien TAN Tuan Amran TUAN ABDULLAH Anwar JOHARI Khairuddin MD ISA Centre of hydrogen energy Institute of Future EnergySchool of Chemical and Energy EngineeringFaculty of EngineeringUniversiti Teknologi Malaysia81310 SkudaiJohorMalaysia School of Environmental Engineering Universiti Malaysia PerlisKompleks Pusat Pengajian Jejawi 302600 ArauPerlisMalaysia

Presently,the global search for alternative renewable energy sources is rising due to the depletion of fossil fuel and rising greenhouse gas(GHG)*** alternatives,hydrogen(H2)produced from biomass gasification is considered a green energy sector,due to its environmentally friendly,sustainable,and renewable ***,tar formation along with syngas is a severe impediment to biomass conversion efficiency,which results in process-related ***,tar consists of various hydrocarbons(HCs),which are also sources for ***,catalytic steam reforming is an effective technique to address tar formation and improve H2 production from biomass *** the various classes in existence,supported metal catalysts are considered the most *** paper focuses on the current researching status,prospects,and challenges of steam reforming of gasified biomass ***,it includes recent developments in tar compositional analysis,supported metal catalysts,along with the reactions and process conditions for catalytic steam ***,it discusses alternatives such as dry and autothermal reforming of tar.

关键词： hydrogen biomass gasification tar steam reforming catalyst

Design and implementation of China hydrogen Price Index system

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Clean energy 2023年第1期7卷 148-156页

作者： Wei Liu Yanming Wan Yan Zhang Qi Liu China hydrogen Alliance Research Institute Co. LtdBeijing100007China Guohua energy Investment Co. LtdBeijing100007China

hydrogen will be an important part of China’s energy system in the future and an important carrier for energy-using terminals to realize green and low-carbon *** is important to establish a nationwide hydrogen market to promote the healthy and orderly development of the hydrogen industry *** core is to form a complete hydrogen price mechanism and play a decisive role in the process of resource allocation by the *** this paper,we have developed the framework of the‘China hydrogen Price Index’system by establishing the‘Assessment+Collection’model,which covers four types of hydrogen:hydrogen,clean hydrogen,renewable hydrogen and high-purity *** model considers the raw materials required for hydrogen production,fixed equipment,engineering construction costs and carbon prices,and conducts sensitivity analysis on the trends and influencing factors of national and regional hydrogen prices of multiple categories since *** results show that,with respect to the level of hydrogen prices,fossil-energy-rich and renewable-energy-rich areas have more advantages than other *** price of raw materials is the main factor of the hydrogen price change,and the utilization hours of renewable energy and hydrogen production equipment have a key influence on the price of renewable ***,by establishing an index update mechanism,improving the standard system and building a trading platform,we can further exert the role of price signals and continue to promote the efficient and smooth expansion of the domestic hydrogen market.

关键词： hydrogen price index market price

Syngas production by photoreforming of formic acid with 2D V_(x)W_(1-x)N_(1.5) solid solution as an efficient cocatalyst

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Frontiers in energy 2024年第5期18卷 640-649页

作者： Xiaoyuan Ye Yuchen Dong Ziying Zhang Wengao Zeng Bin Zhu Tuo Zhang Ze Gao Anna Dai Xiangjiu Guan International Research Center for renewable energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an 710049China

Formic acid(FA)is a potential biomass resource of syngas with contents of carbon monoxide(CO,60 wt.%)and hydrogen(H_(2),4.4 wt.%).Among the technologies for FA conversion,the photoreforming of FA has received widespread attention due to its use of green solar energy conversion technology and mild reaction ***,a V-W bimetallic solid solution,V_(x)W_(1-x)N_(1.5) with efficient co-catalytic properties was first and facilely *** CdS was used as a photocatalyst,the activity performance of the V_(0.1)W_(0.9)N_(1.5) system was over 60%higher than that of the W_(2)N_(3) *** computational simulations and experiments showed the V_(0.1)W_(0.9)N_(1.5) had great metallic features and large work functions,contributing a faster photo-generated carrier transfer and less recombination,finally facilitating a great performance in cocatalyst for syngas production in photoreforming *** work provides an approach to synthesizing novel transition metal nitrides for photocatalysis.

关键词： photocatalysis syngas formic acid cocatalyst solid solution

hydrogen energy: Development Prospects, Current Obstacles and Policy Suggestions under China's “Dual Carbon” Goals

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Chinese Journal of Urban and Environmental Studies 2023年第1期11卷 101-114页

作者： SUN Zuoyu hydrogen energy and Space Propulsion Laboratory (HESPL) School of Mechanical Electronic and Control Engineering Beijing Jiaotong University

hydrogen energy has an advantage over conventional fossil energy because of its clean and lowcarbon features, while its stability gives it an advantage over renewable energy sources such as hydropower, photovoltaic(PV) power, and wind power. Using hydrogen as a fuel can achieve zero carbon emissions or even net zero emissions at the end of energy conversion. Moreover, with hydrogen as the carrier, an energy system of multi-energy complementarity will be established by coupling multiple energy systems such as power grids, gas grids and heat networks, which can realize the comprehensive utilization of renewable energy sources in an efficient, stable, and flexible manner. Based on the “dual carbon” goals, this paper targets sectors with high carbon emissions represented by electric power, steel and transportation, analyzes the feasible path of using hydrogen energy to promote deep carbon reduction, and points out the obstacles faced by hydrogen energy development in various sectors. On account of the current development and expected prospects, this paper proposes that the current focus of hydrogen energy industry is to coordinate the development of industrial sectors and regions, build a pattern that can facilitate the industry’s systematic and concerted development, address key technical challenges(such as green hydrogen production or hydrogen storage and transportation via pipeline), improve industrial standards, and promote the industry’s development in a balanced, coordinated and orderly way.

关键词： hydrogen energy energy transformation net zero emissions

Studies on pathways to carbon neutrality for indirect coal liquefaction in China

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Clean energy 2021年第4期5卷 644-654页

作者： Chufu Li Yonglong Li Ming Xu Yan Gong Siqi Gong Peng Wang Pingping Li Binqi Dong Zhuowu Men National Institute of Clean-And-Low-Carbon energy Beijing102209P.R.China hydrogen Technology Co. Ltd of China Energy GroupBaoding071700P.R.China

The production capacity of indirect coal liquefaction(ICL)in use in China has reached a level of 8 million t/a,which corresponds to a carbon footprint of>60 million t/*** is facing mountainous pressure to reduce its carbon emissions when its development is planned with carbon neutrality as a background *** paper studies the pathways that can lead to carbon neutrality for ICL in China,constructing four carbon-neutral pathways for ICL systems with the introduction of green hydrogen,biomass as feedstock and with CCS(carbon capture and storage),which can reduce significant carbon emissions from coal-gasification and water-gas shift *** carbon-neutral biomass is used to replace some coal as co-feed to gasification and combustion,leading to reduced carbon emissions as *** and economic analyses are performed on different carbon-reduction pathways using a carbon-neutral ICL system on a 1 million t/a scale as an *** results are that the pathway of direct coal substitution with biomass is the lowest carbon-reduction route at RMB 31-125/t CO_(2),substitution with green hydrogen costs the highest at RMB 84-422/t CO_(2) and CCS costs are in the middle at RMB 96-148/t CO_(2).Each pathway has its pros and cons,and a combination of the three may be used for the best ***,a comprehensive study and systematic summation of the critical technological processes and their underlying challenges for carbon-neutral ICL together with direction for a technological breakthrough are *** ICL carbon-reduction pathways presented in this paper are capable of realizing an integrated development between fossil and renewable energy sources,helping the carbon-intense coal-chemical industries to achieve their goals of carbon peak and carbon neutrality.

关键词： indirect coal liquefaction carbon neutral biomass water electrolysis fuel cell CCUS