International Journal of Hydrogen Energy最新文献_第7页

Design and first-principles investigation of step-scheme (S-scheme) g-C3N4/α-MnO2 nanojunction for polystyrene photoreforming into value-added chemicals and hydrogen

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.193

Chirasmayee Mohanty , Alaka Samal , Jagadish Kumar , Ajaya Kumar Behera , Rita Das , Nigamananda Das

{"title":"Design and first-principles investigation of step-scheme (S-scheme) g-C3N4/α-MnO2 nanojunction for polystyrene photoreforming into value-added chemicals and hydrogen","authors":"Chirasmayee Mohanty , Alaka Samal , Jagadish Kumar , Ajaya Kumar Behera , Rita Das , Nigamananda Das","doi":"10.1016/j.ijhydene.2025.03.193","DOIUrl":"10.1016/j.ijhydene.2025.03.193","url":null,"abstract":"<div><div>Pairing the mechanism of hydrogen evolution alongside photoreforming of plastic-based waste items offers an integrated method to produce green hydrogen fuel and recycle post-consumer plastic items concurrently to promote the development of green technology and a sustainable economy. In this work, an S-scheme heterojunction was constructed using α-MnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> for the photoreformation of polystyrene (PS) to generate hydrogen (H<sub>2</sub>), and value-added chemicals. The experimental findings revealed the α-MnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> heterojunction with 10 wt % carbon nitride showing a maximum hydrogen evolution rate of 12.6 ± 2 mmol H<sub>2</sub> g<sub>cat</sub><sup>−1</sup> h<sup>−1</sup>, with concurrent conversion of PS into value-added organic molecules i.e benzaldehyde, benzoic acid, toluene, benzene, carbonic acid etc. The excellent activity with the stability of the catalytic system for over 30 h of continuous reaction was ascribed to the perfect S-scheme combination with higher redox potential, rod-like morphology, compatibility, and associated chemical resistance of the catalyst, which play the key role in stabilizing the morphology and surface active sites for long time. First-Principles Investigation confirmed the compatibility between the S-scheme counterparts that helped in the improved catalytic behaviour towards photoreforming and provided the groundwork for the advancement of photocatalytic systems towards simultaneous generation of green hydrogen and reformation of waste plastic.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 628-641"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the role of bismuth doping in NiFe layered double hydroxide catalysts: Synergistic electronic modulation for superior oxygen evolution activity

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.229

Suqing Lu, Ang Wang, Aiyun Jiang, Junle Zhang

{"title":"Unveiling the role of bismuth doping in NiFe layered double hydroxide catalysts: Synergistic electronic modulation for superior oxygen evolution activity","authors":"Suqing Lu, Ang Wang, Aiyun Jiang, Junle Zhang","doi":"10.1016/j.ijhydene.2025.03.229","DOIUrl":"10.1016/j.ijhydene.2025.03.229","url":null,"abstract":"<div><div>The development of non-precious metal electrocatalysts with high catalytic activity and durability for oxygen evolution reactions (OER) is critical for electrochemical water splitting technologies. In this study, Bi-doped NiFe layered double hydroxide catalysts (NiFeBi LDH) were synthesized via a hydrothermal method, and their OER performance was systematically evaluated. The results demonstrated that NiFeBi LDH exhibited remarkable catalytic activity in 1.0 M KOH solution. Compared to NiFe LDH and some other similar catalysts reported in the literature, NiFeBi LDH demonstrates significant advantages with an overpotential of 85 mV, a Tafel slope of 48.01 mV·dec<sup>−1</sup>, and a charge transfer resistance of 0.66466 Ω at a current density of 10 mA cm<sup>−2</sup>. Meanwhile, NiFeBi LDH can trigger surface reconstruction and generate high-activity NiFeOOH species at a low overpotential. In situ Raman spectroscopy revealed the mechanism by which Bi doping enhances surface reconstruction during OER. Further density functional theory (DFT) calculations indicated that Bi doping significantly improved the OER activity of NiFeBi LDH. This study not only advances the understanding of the OER mechanism in NiFeBi LDH catalysts but also provides valuable insights for the design of efficient, low-cost non-precious metal electrocatalysts.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"123 ","pages":"Pages 23-31"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation of the oxidation behaviour of stainless steel exposed to different air- and oxy-fuel natural gas or hydrogen combustion atmospheres and temperatures during reheating on a semi-industrial scale

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.136

Claudia Radünz , Stefan Schwarz , María Agustina Ravotti , Christian Kislinger , Benjamin Plank , Martin Demuth , Christoph Hochenauer

{"title":"Experimental investigation of the oxidation behaviour of stainless steel exposed to different air- and oxy-fuel natural gas or hydrogen combustion atmospheres and temperatures during reheating on a semi-industrial scale","authors":"Claudia Radünz , Stefan Schwarz , María Agustina Ravotti , Christian Kislinger , Benjamin Plank , Martin Demuth , Christoph Hochenauer","doi":"10.1016/j.ijhydene.2025.03.136","DOIUrl":"10.1016/j.ijhydene.2025.03.136","url":null,"abstract":"<div><div>In the future, steel has to be manufactured with significantly lower CO<sub>2</sub> emissions. Consequently, heating methods other than natural gas-fired furnaces with air as an oxidiser need to be employed. This study investigates the impact of air- and oxy-fuel combustion with natural gas and hydrogen on the scaling behaviour of EN 1.4307 (AISI 304L) stainless steel. The residual oxygen, <figure><img></figure> , and the sample core temperature, 1200°C and 1300°C, were varied. A discontinuous gravimetric measurement method was applied, utilising ten samples of 20 × 20 × 65mm dimensions for each set. For atmosphere generation in a semi-industrial furnace, a multi-fuel and -oxidiser burner was used. The specific mass gain was most heavily dependent on the temperature, followed by the oxidiser and fuel. In the oxy-fuel combustion mode, the presence of residual oxygen in the atmosphere and the fuel had a negligible influence. At 1200°C, switching from natural gas/air combustion to hydrogen/air combustion resulted in a 15% increase in the specific mass gain and, when switching from natural gas/air to oxy-fuel with natural gas or hydrogen, in a 40% increase.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"122 ","pages":"Pages 67-81"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal green ammonia system design for minimum levelized costs in Southern Argentina

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.317

Ignacio Schmidhalter , Miguel C. Mussati , Sergio F. Mussati , Marian G. Marcovecchio , Pio A. Aguirre

{"title":"Optimal green ammonia system design for minimum levelized costs in Southern Argentina","authors":"Ignacio Schmidhalter , Miguel C. Mussati , Sergio F. Mussati , Marian G. Marcovecchio , Pio A. Aguirre","doi":"10.1016/j.ijhydene.2025.03.317","DOIUrl":"10.1016/j.ijhydene.2025.03.317","url":null,"abstract":"<div><div>This paper presents a mathematical model for the optimal design of green ammonia production systems in Argentina, specifically in Patagonia and Buenos Aires Province. The objective is to minimize the levelized cost of ammonia (LCOA) while meeting delivery constraints. The location of the renewable energy farm has a significant impact on the optimal system sizing and the LCOA. For the locations under analysis, the optimal farm-to-electrolyzer peak power ratio varies between 1.3 and 2.3, with the LCOA ranging from 562 to 696 USD/t NH<sub>3</sub>. Comparative analysis of constant nominal efficiencies and variable real efficiencies in the electrolyzer and Haber-Bosch (HB) processes reveals the emergence of different design configurations, with a potential discrepancy of up to 15 % in power ratio, 80 % in H<sub>2</sub> storage capacity, and 10 % in LCOA. An increase in the HB turn-down ratio from 40 % to 80 % has a significant impact on optimal design, influencing the power ratio, storage of hydrogen, nitrogen, and ammonia, as well as the LCOA, by 11 %, 760 %, 180 %, 14 %, and 7 %, respectively. Systems designed for constant nominal efficiency may experience frequent HB shutdowns when operating at real variable efficiencies. Delivery constraints showed limited impacts.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"121 ","pages":"Pages 337-350"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

China's renewable reformation: Financial dynamics in the age of hydrogen energy and green financing transformation

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.090

Rui Qian , Norkhairul Hafiz Bajuri , Muhammad Umair , Nawal Abdalla Adam , Zaka Ullah

{"title":"China's renewable reformation: Financial dynamics in the age of hydrogen energy and green financing transformation","authors":"Rui Qian , Norkhairul Hafiz Bajuri , Muhammad Umair , Nawal Abdalla Adam , Zaka Ullah","doi":"10.1016/j.ijhydene.2025.03.090","DOIUrl":"10.1016/j.ijhydene.2025.03.090","url":null,"abstract":"<div><div>China has rapidly transformed its energy landscape over the past few decades, shifting towards sustainable energy sources and green financing mechanisms. However, despite the country's ambitious commitment to renewable energy and green finance, regional disparities in financial accessibility and renewable energy investments persist. The efficiency of green financing instruments in fostering hydrogen energy adoption and sustainable energy infrastructure remains underexplored. This study investigates the financial dynamics underpinning China's renewable energy transition, with a particular focus on hydrogen energy and green financing from 1990 to 2023. Using an econometric model, panel data from 30 provinces are analyzed to assess the impact of financial incentives, investment patterns, and policy interventions on renewable energy development. The findings reveal that green financing policies have significantly boosted hydrogen energy investments, particularly in industrial and high-tech sectors, yet regional disparities remain evident, with coastal provinces benefiting more from financial instruments than inland regions. Financial incentives, such as subsidies and tax benefits, have driven technological advancements and increased renewable energy adoption, while market-based carbon pricing mechanisms have positively influenced investment in hydrogen and renewable energy projects. The econometric model further confirms a strong correlation between green credit availability and renewable energy infrastructure development. Based on these insights, the study underscores the need for enhanced financial accessibility and policy coordination across provinces to bridge regional disparities and ensure an equitable and accelerated transition to renewable energy in China.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"121 ","pages":"Pages 351-360"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic interfacial dynamics of CoFe-LDH@ZnCo2O4 as robust hybrid heterostructures for sustainable water electrolysis

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.02.463

T. Govindaraj , C. Kanagaraj , E. Senthil Kumar , M. Navaneethan

{"title":"Synergistic interfacial dynamics of CoFe-LDH@ZnCo2O4 as robust hybrid heterostructures for sustainable water electrolysis","authors":"T. Govindaraj , C. Kanagaraj , E. Senthil Kumar , M. Navaneethan","doi":"10.1016/j.ijhydene.2025.02.463","DOIUrl":"10.1016/j.ijhydene.2025.02.463","url":null,"abstract":"<div><div>The development of efficient and stable cobalt-based spinel oxide catalysts is crucial for sustainable and clean energy production through electrocatalytic water splitting. Layered double hydroxides (LDHs) have emerged as a promising class of non-noble metal electrocatalysts for both hydrogen and oxygen evolution reactions. In this study, we report the hybrid heterostructure CoFe-LDH@ZnCo<sub>2</sub>O<sub>4</sub> on a self-supported nickel foam substrate (ZCF-LDH/NF) using a cost-effective two-step hydrothermal process. The robust interfacial network and abundant catalytically active sites of ZCF-LDH/NF facilitate efficient charge transfer. The resulting ZCF-LDH/NF catalyst exhibits remarkable bifunctional electrocatalytic activity, achieving low overpotentials of approximately 290 mV and 296 mV for the oxygen evolution reaction (OER) and 195 mV and 208 mV for the hydrogen evolution reaction (HER) at a current density of 50 mA cm<sup>−2</sup> in both fresh and simulated alkaline seawater, respectively. Additionally, the integrated water electrolyzer featuring ZCF-LDH/NF<sub>(−)</sub>‖ZCF-LDH/NF<sub>(+)</sub> electrodes demonstrates impressive performance, requiring only 1.61 V to reach 10 mA cm<sup>−2</sup> in alkaline and 1.64 V in simulated alkaline conditions. Further, Mott–Schottky analysis reveals the semiconductor properties and flat-band potentials of the components, providing insights into the charge transfer mechanisms. First-principles density functional theory calculations unveil the creation of more active sites on the CoFe-LDH surface, contributing to the heterostructure's overall catalytic activity. Notably, this work presents spinel oxide/LDH-based heterostructures as efficient and cost-effective catalysts with negligible catalytic activity loss, offering great potential for sustainable hydrogen production and energy conversion applications.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"121 ","pages":"Pages 361-374"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduced graphene aerogel anchored with MnCo2O4.5 spinel by self-assembly technique to boost bifunctional catalytic activity for zinc-air batteries

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.412

Wei Zhao, Jiaxing Yan, Chao Zhu, Guangwei Zhuang, Yifeng Zheng

{"title":"Reduced graphene aerogel anchored with MnCo2O4.5 spinel by self-assembly technique to boost bifunctional catalytic activity for zinc-air batteries","authors":"Wei Zhao, Jiaxing Yan, Chao Zhu, Guangwei Zhuang, Yifeng Zheng","doi":"10.1016/j.ijhydene.2025.03.412","DOIUrl":"10.1016/j.ijhydene.2025.03.412","url":null,"abstract":"<div><div>Developing efficient and cost-effective bifunctional catalysts is pivotal in advancing Zn-air batteries (ZABs). In this study, a novel bifunctional cathode catalyst (A-rGO/MCO) is developed by anchoring needle-like MnCo<sub>2</sub>O<sub>4.5</sub> (MCO) particles onto a self-assembled reduced graphene oxide aerogel. The A-rGO/MCO exhibits an ORR half-wave potential of 0.79 V (vs. RHE) and an OER potential of 1.68 V (vs. RHE) at a current density of 10 mA cm<sup>−2</sup>. Specifically, recharge ZABs fabricated with A-rGO/MCO cathode catalyst displays excellent activity with a power density of as high as 152 mW/cm<sup>2</sup>, a high discharge specific capacity of 815.1 mAh g<sup>−1</sup>. Besides, A-rGO/MCO catalyst demonstrates excellent charge-discharge performance and stability in solid-state ZABs. The synergistic effect of graphene and MCO enhances the catalytic activity, electron transport and structural stability. The strong coupling between MCO and defect-rich reduced graphene aerogel can further increase the specific surface area, increase the active site, also regulate the electron configuration, introduce more defects, and thus improve the bifunctional electrocatalytic activity.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"123 ","pages":"Pages 1-10"},"PeriodicalIF":8.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of carbon monoxide on the detonation ability of the hydrogen-air mixture during shock wave focusing

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.371

S.V. Khomik , S.P. Medvedev , L.I. Stamov , N.N. Smirnov

引用次数: 0

Porous borophene/NiO with lattice defects as a superior electrocatalyst for the oxygen evolution reaction

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-04-01 DOI: 10.1016/j.ijhydene.2025.03.408

Klaudia Zielinkiewicz , Grzegorz Leniec , Ewa Mijowska

引用次数: 0

Functional properties of CuMn1.9Fe0.1O4-based coatings deposited on Crofer 22 APU steel exposed to selected pre-oxidation conditions

IF 8.1 2区工程技术

International Journal of Hydrogen Energy Pub Date : 2025-03-30 DOI: 10.1016/j.ijhydene.2025.03.242

Monika Łazor , Yevgeniy Naumovich , Leszek Ajdys , Aleksey Yaremchenko , Agnieszka Żurawska , Paulina Wiecińska

{"title":"Functional properties of CuMn1.9Fe0.1O4-based coatings deposited on Crofer 22 APU steel exposed to selected pre-oxidation conditions","authors":"Monika Łazor , Yevgeniy Naumovich , Leszek Ajdys , Aleksey Yaremchenko , Agnieszka Żurawska , Paulina Wiecińska","doi":"10.1016/j.ijhydene.2025.03.242","DOIUrl":"10.1016/j.ijhydene.2025.03.242","url":null,"abstract":"<div><div>The study investigates how pre-oxidation conditions affect the properties of cobalt-free protective coatings for solid oxide fuel cell (SOFC) interconnects. Coatings were composed of commercial spinel CuMn<sub>1.9</sub>Fe<sub>0.1</sub>O<sub>4</sub>, applied to Crofer 22 APU via electrophoretic deposition (EPD).</div><div>Steel samples underwent pre-oxidation at 600–850 °C in air. Pre-oxidation at 800 °C proves to be the most effective, forming a uniform oxide layer that reduced ASR by over 50 % compared to pristine steel. All coatings demonstrate consistent thickness (13–26 μm) and low porosity (11–13 %), with structural characteristics that effectively limit gas-phase transport. Following sintering, XRD studies revealed a dual-phase composition of the coatings comprising spinel (Cu,Mn)<sub>3</sub>O<sub>4</sub> and bixbyite (Mn,Fe)<sub>2</sub>O<sub>3</sub>, which is likely to enhance Cr trapping while remaining stable electrically and mechanically. Analysis using artificial neural networks (ANN) based on ASR results confirm that pre-oxidation at 800 °C ensures mid-term stability, with minimal chromium diffusion observed after 200 h of testing at 700 °C.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"120 ","pages":"Pages 613-627"},"PeriodicalIF":8.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0