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Advancements in the development of liquid organic hydrogen carrier systems and their applications in the hydrogen economy

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Progress in Natural Science:Materials International 2024年第5期34卷 825-839页

作者： Alexis Munyentwali Khai Chen Tan Teng He Dalian Institute of Chemical Physics Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

The transition towards sustainable and clean energy systems has become a significant concern in the modern world. hydrogen has the potential to meet the growing energy demands while addressing greenhouse gas emissions. However, one major obstacle in utilizing hydrogen as a fuel is the lack of efficient and cost-effective storage methods. In this regard, liquid organic hydrogen carriers(LOHCs) offer several advantages, including high hydrogen storage capacity, improved safety compared to traditional storage methods, and the ability to transport hydrogen using existing liquid fuels' infrastructure. This review summarizes advancements in the development of LOHC systems for hydrogen storage, with a focus on the latest and innovative systems such as those based on dehydrogenative coupling reactions, renewable LOHCs from lignocellulosic biomass, and the development of LOHCs from plastic waste recycling. In addition to the material aspect, this contribution also discusses various applications of LOHCs in the broader context of the hydrogen economy, including a recently proposed concept of mixed gas hydrogenation of LOHCs for realizing hydrogen purification and storage in a single process step. By highlighting the main advantages and challenges of each LOHC system and providing future directions in the development of efficient LOHC systems, this review aims to contribute to an extensive understanding and advancement of LOHCs in the evolving hydrogen-based economy.

关键词： Dehydrogenation hydrogen economy hydrogen storage hydrogenation Liquid organic hydrogen carriers (LOHCs)

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High-entropy alloys for accessing hydrogen economy via sustainable production of fuels and direct application in fuel cells

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Rare Metals 2023年第11期42卷 3553-3569页

作者： Qi-Yang Cheng Meng-Fan Wang Jia-Jie Ni Yan-Zheng He Hao-Qing Ji Si-Si Liu Tao Qian Cheng-Lin Yan School of Chemistry and Chemical Engineering Nantong UniversityNantong226019China Collaborative Innovation Center of Suzhou Nano Science and Technology College of EnergySoochow UniversitySuzhou215006China Light Industry Institute of Electrochemical Power Sources Suzhou 215600China

Heavy consumption of fossil fuels has raised concerns over the climate change and energy security in the past *** this review,hydrogen economy,as a clean and sustainable energy system,is receiving great *** success of future hydrogen economy strongly depends on the storage of renewable energy in hydrogen and hydrogen-rich chemicals through electrolyzers and conversion back to electricity via fuel *** are at the heart of these critical technologies and great efforts have been devoted to preparing highly efficient ***-entropy alloys(HEAs),with their unique structural characteristics and intrinsic properties,have evolved to be one of the most popular catalysts for energy-related applications,especially those associated with hydrogen ***,recent advances regarding HEAs-based hydrogen economy are comprehensively *** is paid to the discussion of emerged HEAs as a new class of materials in hydrogen energy cycle,carbon-based hydrogen energy cycle,and nitrogen-based hydrogen energy cycle,covering the sustainable electrochemical synthesis of hydrogen and hydrogen-rich fuels and their direct application in fuel *** on this overview,the challenges and promising directions are proposed to guide the development of HEAs research,aiming to achieve significant progress for further accessing hydrogen economy.

关键词： High-entropy alloys(HEAs) hydrogen economy Electrocatalysis Fuel cell Energy conversion

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What would a US green hydrogen energy economy look like?

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Clean Energy 2023年第5期7卷 1148-1172页

作者： Thomas Tonon Independent researcher Ph.D.Aerospace and Mechanical SciencesPrinceton University1971.11 Bolfmar AvenuePrinceton JunctionNJ 08550USA

Detailed description is given for a hypothetical US hydrogen economy with solar and wind energy supplying virtually all current energy needs and with electrolytic hydrogen the energy carrier and storage *** fuels provide nonfuel products(plastics,chemicals,cement and asphalt).Only current technologies are considered and hydrogen storage accommodates generation intermit-tency and variability,using pit storage of high-pressure vessels in open air,yielding daily storage round-trip energy installation costs of 722 and 538$/kWh for electric and thermal,respectively;and for power,2351 and 2240$/kW for electric and thermal,*** long-duration storage,the costs are 94.1 and 23.8$/kWh and 937 and 845$/kW,*** energy generation 20%over baseline accommodates low-season generation,obviates much required storage and ensures that reserves are topped off;96%of US 2022 total energy consumption is provided *** the default scenario(demand energy portions:half photovoltaic,quarter on-shore wind and quarter offshore wind),the surface area for the farms(including offshore surface)requires~4.6%of the US 48-state land *** 350 pit storage sites provide both daily and long-duration storage,with the latter accounting for complete loss of generation for 4 days over a quarter of the *** pipelines and a renewed electric grid transmit and distribute *** installation cost of the public infrastructure is~$27.8 trillion for the default *** scenarios show significant in-frastructure and cost savings when batteries are used for transportation and/or utility storage,provided current insufficiencies can be ***,cost levels in money,surface and infrastructure are within existing levels already achieved in historical events and modern living.

关键词： hydrogen economy renewable energy hydrogen storage hydrogen pipelines sustainable net zero

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A systemic review of hydrogen supply chain in energy transition

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Frontiers in Energy 2023年第1期17卷 102-122页

作者： Haoming MA Zhe SUN Zhenqian XUE Chi ZHANG Zhangxing CHEN Department of Chemical and Petroleum Engineering University of CalgaryCalgaryAB T2N 1N4Canada

Targeting the net-zero emission(NZE)by 2050,the hydrogen industry is drastically developing in recent ***,the technologies of hydrogen upstream production,midstream transportation and storage,and downstream utilization are facing *** this paper,the development of hydrogen industry from the production,transportation and storage,and sustainable economic development perspectives were *** current challenges and future outlooks were summarized *** the upstream,blue hydrogen is dominating the current hydrogen supply,and an implementation of carbon capture and sequestration(CCS)can raise its cost by 30%.To achieve an economic feasibility,green hydrogen needs to reduce its cost by 75%to approximately 2$/kg at the large *** research progress in the midterm sector is still in a preliminary stage,where experimental and theoretical investigations need to be conducted in addressing the impact of embrittlement,contamination,and flammability so that they could provide a solid support for material selection and largescale feasibility *** the downstream utilization,blue hydrogen will be used in producing value-added chemicals in the *** the long-term,green hydrogen will dominate the market owing to its high energy intensity and zero carbon intensity which provides a promising option for energy *** in the hydrogen industry require a comprehensive understanding of their economic and environmental benefits over the whole life cycle in supporting operators and policymakers.

关键词： hydrogen production hydrogen transportation and storage hydrogen economy carbon capture and sequestration(CCS) technology assessment

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Decarbonising energy: The developing international activity in hydrogen technologies and fuel cells

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Journal of Energy Chemistry 2020年第12期29卷 405-415页

作者： John Meurig Thomas Peter P.Edwards Peter J.Dobson Gari P.Owend Department of Materials Science&Metallurgy University of CambridgeCambridge CB30FSUK King Abdulaziz City for Science and Technology(KACST)-Oxford Centre of Excellence in Petrochemicals and Inorganic Chemistry Laboratory University of OxfordOxford OX13QRUK The Queen’s College University of OxfordOxford OX14AWUK Annwvyn Solutions(Independent Consultant) BromleyKent BR13DWUK

hydrogen technologies and fuel cells offer an alternative and improved solution for a decarbonised energy *** cells are electrochemical converters;transforming hydrogen (or energy sources containing hydrogen) and oxygen directly into *** hydrogen fuel cell,invented in 1839,permits the generation of electrical energy with high efficiency through a non-combustion,electrochemical process and,importantly,without the emission ofits point of ***,despite numerous efforts to exploit the obvious attractions of hydrogen technologies and hydrogen fuel cells,various challenges have been encountered,some of which are reviewed ***,however,given the exigent need to urgently seek low-carbon paths for humankind’s energy future,numerous countries are advancing the deployment of hydrogen technologies and hydrogen fuel cells not only for transport,but also as a means of the storage of excess renewable energy from,for example,wind and solar ***,hydrogen is also being blended into the natural gas supplies used in domestic heating and targeted in the decarbonisation of critical,large-scale industrial processes such as steel *** briefly review specific examples in countries such as Japan,South Korea and the People’s Republic of China,as well as selected examples from Europe and North America in the utilization of hydrogen technologies and hydrogen fuel cells.

关键词： Decarbonisation hydrogen Energy hydrogen economy Fuel cells Environment Sustainability

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Integration of Green hydrogen Production and Storage via Electrocatalysis

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Precision Chemistry 2024年第6期2卷 229-238页

作者： Chao Zhang Jingxiang Low Yujie Xiong Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Precision and Intelligent ChemistrySchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026China

hydrogen economy,which proposes employing hydrogen to replace or supplement the current fossil-fuel-based energy economy system,is widely accepted as the future energy scheme for the sustainable and green development of human *** the hydrogen economy has shown tremendous potential,the associated challenges with hydrogen production and storage remain significant barriers to wide *** light of this consideration,the integration of green hydrogen production and storage through electrocatalysis for direct production of chemical hydrogen storage media has emerged as a potential solution to these ***,through electrocatalysis,CO_(2) and H_(2)O can be converted into methanol or formic acid,while N_(2) or NOx along with H_(2)O can be transformed into ammonia,streamlining the hydrogen economy *** this Perspective,we provide an overview of recent developments in this ***,we briefly discuss the general properties and corresponding production strategies via the electrolysis of these chemical hydrogen storage ***,we conclude by offering insights into future perspectives in this field,anticipating that the successful advancement of such technology will propel the development of the hydrogen economy toward practical implementation.

关键词： hydrogen economy Electrocatalysis Methanol Formic acid Ammonia

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hydrogen Civilization Doctrine: Whether the Humankind Can Prevent Global Ecological Catastrophe?

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贵金属 2012年第A01期33卷 195-197页

作者： GOLTSOV V.A. GOLTSOVA L.F. SPORTSMEN L.A. GOLTSOVA M.V. Donetsk National Technical University DonetskUkraine OJSC "SIC 'Supermetal' " MoscowRussia

hydrogen Civilization (HyCi) doctrine is a novel world outlook, all-embracing vision of the sustainability of the human future: humanity can preclude world climate catastrophe and conserve the biosphere's ability to maintain the life of humanity by the only way, just by the sustainable movement along the vector "hydrogen Energy → hydrogen economy → hydrogen Civilization". HyCi doctrine is overcoming boundaries between different sciences, between peoples and nations. hydrogen civilization is a public ideal ('superattractor') putting in the forefront Shakespeare's Hamlet question on a global scale: "To be or not to be the humankind: that is the question".

关键词： hydrogen energy hydrogen economy hydrogen civilization sustainability

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Advancing green energy solution with the impetus of COVID-19 pandemic

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Journal of Energy Chemistry 2021年第8期30卷 688-705,I0014页

作者： Mohamedazeem M.Mohideen Seeram Ramakrishna Sivaprasath Prabu Yong Liu Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical Technology100029 BeijingChina Center for Nanofibers and Nanotechnology National University of Singapore1157 SingaporeSingapore Institute of Plant Protection Chinese Academy of Agricultural Sciences100193 BeijingChina

The global energy system needs a revolutionary transition from today’s fossil fuel to a low carbon energy system by having deep carbonization in all energy demand *** in the transport sector,fossil fuel-based vehicles contribute to a more massive amount of greenhouse gas emissions(GHG),mainly carbon dioxide(CO_(2))and particulate matter(PM2.5),affecting human health,society,and the climate *** and fuel cell technology is a promising low carbon transition pathway that supports GHG mitigation and achieves sustainable *** hydrogen and fuel cells are assuring,fuel cell vehicle expensiveness and the high cost of hydrogen production with the low carbon footprint are significant hindrances for its widespread *** the situation above,the present corona virus(COVID-19)has devastated our global economy and ramps down the future of fossil *** provides opportunities to rethink and reshape our energy system to a low carbon *** utilizing the situation,governments and policymakers need to eliminate fossil fuel and invest in the hydrogen and fuel cell technologies deployment as future energy *** review article provides a technical overview of a low carbon energy system,production,and end-use service in a hydrogen economy perspective for developing a sustainable energy *** techno-economic analysis of the different hydrogen production routines and fuel cell vehicles and their infrastructures are primarily ***,a long-term policy alignment was outlined to advance the hydrogen energy system for post-COVID-19 in the United Nation’s(UN)sustainable development goals framework.

关键词： hydrogen economy Low carbon energy system Fuel cell vehicles Renewable energy Sustainable development goals

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Using machine learning to expound energy poverty in the global south:Understanding and predicting access to cooking with clean energy

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Energy and AI 2023年第4期14卷 426-438页

作者： M.D.Mukelabai K.G.U.Wijayantha R.E.Blanchard Centre for Renewable Energy Systems Technology(CREST) Wolfson School of MechanicalElectricaland Manufacturing EngineeringLoughborough UniversityEpinal WayLoughboroughLeicestershire LE113TUUK Centre for Renewable and Low-Carbon Energy Cranfield UniversityCollege RoadCranfieldBedfordshire MK430ALUK

Efforts towards achieving high access to cooking with clean energy have not been transformative due to a limited understanding of the clean-energy drivers and a lack of evidence-based clean-energy policy *** study addresses this gap by building a high-performing machine learning model to predict and understand the mechanisms driving energy poverty-specifically access to cooking with clean *** a first-of-a-kind,the estimated cost of US$14.5 trillion to enable universal access to cooking with clean energy encompasses all the intermediate inputs required to build self-sufficient ecosystems by creating value-addition *** pre-vious studies,the data-driven clean-cooking transition pathways provide foundations for shaping policy and building energy models that can transform the complex energy and cooking *** these path-ways is necessary to increase people’s financial resilience to tackle energy *** findings also show the absence of a linear relationship between electricity access and clean cooking-evidencing the need for a rapid paradigm shift to address energy poverty.A new fundamental approach that focuses on improving and sustaining the financial capacity of households through a systems approach is required so that they can afford electricity or fuels for cooking.

关键词： Energy modeling Artificial intelligence Explainable AI Developing world hydrogen economy

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Production of hydrogen through Reforming of Methanol at Low Temperatures

Production of Hydrogen through Reforming of Methanol at Low ...

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第六届海峡两岸超微颗粒学术研讨会

作者： Chia-Chieh Shen Chuin-Tih Yeh Fuel Cell Center Yuan Ze University

Since 1980,the consumption rate of petroleum started to exceed its rate of discovery. Conservation of fossil fuels thus became an important subject in the energy *** fuel cell (HFC) is an electrochemical device that has a high efficiency(～40%) for converting the chemical energy of fuel oxidation to electricity *** rate of fossil fuel consumption may therefore significantly slow down on a wide application of ***,DOE of the United States recently abandoned its former policy of"promoting HFC technology for automobile application".The change in police reflected a schedule delay in lowering the cost of fuel cell ***,many branches of HFC technology require major breakthroughs before a wide *** distribution of hydrogen fuel is a major problem in the HFC *** approach to solve the problem is on site production of hydrogen by reforming of liquid fuels. Among different liquid fuels to be reformed,methanol distinguishes itself in abundant feedstock (produced in large scale from synthesis gas for easy transportation),low price(～50%on comparing to gasoline) and high activity(for steam reforming reaction).A commercial catalyst of Cu/ZnAl is adopted for the steam reforming of methanol(SRM).A medium reforming temperature(T) in the range of 250 to 300℃is generally required in the literature for a high methanol conversion of C>95%from the commercial *** fuel cell center of our Yuan Ze University is interested in developing microchannel reactors that can reform methanol at low *** modifying the porosity and the formula of copper catalysts,the temperature required for SRM could substantially decreased to Thydrogen rich gas *** appropriate modification,the improved catalyst also has a

关键词： hydrogen economy copper catalysts reforming temperature stream reforming of methanol(CH3OH + H2O→CO2 + 3H2)

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