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Sustainable Energy & Fuels 2025 Outstanding Papers 可持续能源与燃料2025杰出论文
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-04-08 DOI: 10.1039/D6SE90017H
None
{"title":"Sustainable Energy & Fuels 2025 Outstanding Papers","authors":"None","doi":"10.1039/D6SE90017H","DOIUrl":"https://doi.org/10.1039/D6SE90017H","url":null,"abstract":"<p >A graphical abstract is available for this content</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 1812-1815"},"PeriodicalIF":4.1,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A corrosion study of lithium-ion batteries during NaCl electrochemical discharge: mechanistic origins and Zn-based mitigation strategies NaCl电化学放电过程中锂离子电池的腐蚀研究:机理起源和基于锌的缓解策略
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-04-02 DOI: 10.1039/D6SE00009F
Hanna Sahivirta, Annukka Santasalo-Aarnio and Rodrigo Serna-Guerrero
{"title":"A corrosion study of lithium-ion batteries during NaCl electrochemical discharge: mechanistic origins and Zn-based mitigation strategies","authors":"Hanna Sahivirta, Annukka Santasalo-Aarnio and Rodrigo Serna-Guerrero","doi":"10.1039/D6SE00009F","DOIUrl":"https://doi.org/10.1039/D6SE00009F","url":null,"abstract":"<p >As lithium-ion battery (LIB) demand increases, there is growing interest in their recycling to reduce the environmental impact of mining. The safe handling of end-of-life batteries during transportation, storage and mechanical treatment requires development of environmentally sustainable and industrially scalable discharging processes. In this context, electrochemical discharge shows promise due to its simplicity, robustness, and potentially low cost. NaCl solution has been extensively studied as a promising discharge medium because of its availability and reportedly fast discharge potential. However, the use of NaCl aqueous electrolyte solutions has resulted in casing corrosion, which is associated with inefficient discharge and losses of critical raw materials. To overcome these issues, the present study offers for the first time an in-depth exploration of the potential mechanisms responsible for LIB corrosion in NaCl solutions. It is found that corrosion is a consequence of multiple parallel reactions driven by the presence of dissolved oxygen produced during electrochemical water splitting. As the corrosion pathways are identified, a novel approach is proposed to prevent it, namely, the use of Zn-salts as corrosion inhibitors. The experimental results suggest that Zn<small><sup>2+</sup></small> ions aid in corrosion prevention in three main ways: (i) by forming non-soluble Zn(OH)<small><sub>2</sub></small> with OH<small><sup>−</sup></small> ions produced on the metal surfaces; (ii) by forming mixed Fe–Zn oxide in corrosion pits; and (iii) by consuming electrons from the battery during discharge and forming a sacrificial anode of metallic Zn. The present work thus proposes an economical and reliable approach to discharge LIBs efficiently using aqueous electrolyte media.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 2110-2125"},"PeriodicalIF":4.1,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/se/d6se00009f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanocomposite electrodes with CuFe layered double hydroxides and hydrochar for alkaline HER and HOR: a multifunctional platform for hydrogen electrocatalysis 用于碱性HER和HOR的CuFe层状双氢氧化物和碳氢纳米复合电极:氢电催化的多功能平台
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-04-01 DOI: 10.1039/D6SE00103C
Michelle Saliba, Philippe Knauth, Emily Bloch, Luca Pasquini, Emanuela Sgreccia, Riccardo Narducci, Alessandra Varone and Maria Luisa Di Vona
{"title":"Nanocomposite electrodes with CuFe layered double hydroxides and hydrochar for alkaline HER and HOR: a multifunctional platform for hydrogen electrocatalysis","authors":"Michelle Saliba, Philippe Knauth, Emily Bloch, Luca Pasquini, Emanuela Sgreccia, Riccardo Narducci, Alessandra Varone and Maria Luisa Di Vona","doi":"10.1039/D6SE00103C","DOIUrl":"https://doi.org/10.1039/D6SE00103C","url":null,"abstract":"<p >The hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR) in alkaline media remain limited by slow kinetics and the reliance on noble metal catalysts. Copper-iron layered double hydroxides (CuFe-LDHs), composed of non-rare and low-toxicity elements, offer a sustainable alternative, though their performance is restricted by low conductivity and limited accessibility of active sites. In this work, CuFe-LDHs were synthesized hydrothermally and modified through three complementary strategies: ammonium fluoride (NH<small><sub>4</sub></small>F) as a structure-directing agent poly(2,6-dimethyl-1,4-phenylene oxide) functionalized with trimethylammonium (PPO-LC) as a hydroxide-conducting ionomer, and a nitrogen-doped hydrochar derived from pine needles as an electron-conducting additive. Structural tuning with 1.5% NH<small><sub>4</sub></small>F produced highly crystalline LDH-1.5 with increased exposure of catalytic centers, while PPO-LC enhanced OH<small><sup>−</sup></small> transport and electrode integrity. Hydrochar contributed additional conductive domains, facilitating charge transfer and improving electrode architecture. The materials were characterized using BET surface area analysis, scanning electron microscopy with EDS element mapping, X-ray diffraction, and Fourier-transform infrared spectroscopy. All catalytic electrodes demonstrated a high electrochemically active surface area. The LDH-1.5/PPO-LC electrode delivered the best HER activity with an overpotential of −332 mV at −10 mA cm<small><sup>−2</sup></small>. For the HOR, hydrochar-containing electrodes displayed reduced onset potential values: the LDH-1.5/PPO-LC/HC composite reached the lowest onset potential of 38 mV, though the current densities remained limited. Tafel analysis indicated that the HER is governed by the Volmer step associated with water dissociation, whereas the HOR follows a Heyrovsky–Volmer or Tafel–Volmer pathway depending on the electrode composition. These results highlight the effectiveness of combining structural, ionic, and electronic modifications to enhance the performance of CuFe-LDH-based bifunctional electrodes in alkaline environments, while indicating that further optimization is required to overcome intrinsic kinetic limitations.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 9","pages":" 2314-2326"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/se/d6se00103c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147826924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A cobalt phthalocyanine-Ketjen black hybrid electrocatalyst for efficient and stable alkaline water splitting 一种高效稳定的酞菁钴- ketjen黑杂化电催化剂
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-31 DOI: 10.1039/D6SE00207B
Shantharaja Daniel and Hyun Chul Kim
{"title":"A cobalt phthalocyanine-Ketjen black hybrid electrocatalyst for efficient and stable alkaline water splitting","authors":"Shantharaja Daniel and Hyun Chul Kim","doi":"10.1039/D6SE00207B","DOIUrl":"https://doi.org/10.1039/D6SE00207B","url":null,"abstract":"<p >This study aims to develop a sustainable energy framework focused on the evolution of energy conversion and storage applications with excellent performance using lower-cost materials. Some of the electrochemical methods include water electrolysis (the hydrogen evolution reaction [HER] and oxygen evolution reaction [OER]), fuel cells, and metal–air batteries, which are eco-friendly in terms of production of hydrogen and electricity from sustainable sources, and are not only catalytically efficient but also have higher durability. Therefore, the purpose of this research is to develop novel metal-based molecular electrocatalysts for applications in clean energy production. A hybrid electrocatalyst, synthesized from 2,10,16,24-tetrakis{4-((2-benzhydrylamino)phenyl)amino-2-isocyanobenzonitrile}cobalt phthalocyanine (CoTBPc) supported on Ketjen Black (KB), was prepared and comprehensively characterized using FTIR, NMR, Raman, UV-vis, SEM-EDS, and XPS analyses and other analytical methods. The CoTBPc + KB composite exhibits excellent hydrogen evolution reaction (HER) activity, with an overpotential of 229 mV at 10 mA cm<small><sup>−2</sup></small> in 1.0 M KOH. For the oxygen evolution reaction (OER), it shows an overpotential of 289 mV, demonstrating balanced bifunctional catalytic performance. The conductive KB framework facilitates rapid electron transfer and optimally exposes Co–N4 active sites. The catalyst also retains excellent operational stability for 47 hours (HER) and 52 hours (OER) during continuous electrolysis. These outcomes make CoTBPc + KB a durable and promising candidate for alkaline water-splitting applications.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 9","pages":" 2344-2354"},"PeriodicalIF":4.1,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147826926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Discussion on the mechanism of the electrocatalytic reduction of furfural using thermodynamic, voltammetry, and simulation methods 用热力学、伏安法和模拟方法探讨糠醛电催化还原的机理
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-30 DOI: 10.1039/D5SE01645B
Yiming Cui, Ze Wang, Jie Hao, Xiaoxia Li and Songgeng Li
{"title":"Discussion on the mechanism of the electrocatalytic reduction of furfural using thermodynamic, voltammetry, and simulation methods","authors":"Yiming Cui, Ze Wang, Jie Hao, Xiaoxia Li and Songgeng Li","doi":"10.1039/D5SE01645B","DOIUrl":"https://doi.org/10.1039/D5SE01645B","url":null,"abstract":"<p >Electrocatalytic reduction (ECR) of bio-oil (from the pyrolysis of biomass) has attracted great attention because of its operation under ambient conditions and the use of water as a hydrogen donor. Furfural (FF) is an important component of bio-oil. 2-Methylfuran (2-MF) can be used as a gasoline antiknock agent. The ECR of FF to produce 2-MF is investigated. Low temperature is found to be favorable for the ECR of FF and disadvantageous for the formation of H<small><sub>2</sub></small>. Ni has a higher activity than Cu. For Ni–Cu electrode, the reaction initiates as late as that on Cu, but the conversion becomes faster once reaction starts. A trace amount of Ni<small><sup>2+</sup></small> (10<small><sup>−7</sup></small> M) in the electrolyte has nearly no influence on the reaction overpotential but could improve the extent of conversion. The carbonyl bond of furfural is activated when the carbonyl O atom approaches the Cu atom and the carbonyl C atom is close to Ni.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 2059-2069"},"PeriodicalIF":4.1,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tannic acid-derived metal–phenolic networks with dual-atom ORR and single-atom OER sites for bifunctional oxygen electrocatalysts 双功能氧电催化剂中单宁酸衍生的双原子ORR和单原子OER网络
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-27 DOI: 10.1039/D6SE00142D
Shilong Wen, Zhen Zhang and Xikui Liu
{"title":"Tannic acid-derived metal–phenolic networks with dual-atom ORR and single-atom OER sites for bifunctional oxygen electrocatalysts","authors":"Shilong Wen, Zhen Zhang and Xikui Liu","doi":"10.1039/D6SE00142D","DOIUrl":"https://doi.org/10.1039/D6SE00142D","url":null,"abstract":"<p >Developing highly efficient and cost-effective bifunctional oxygen electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is critical for the widespread application of rechargeable zinc–air batteries. Herein, we report a green-synthesized, tannic acid-derived metal–phenolic networks electrocatalyst featuring well-defined dual-atom ORR sites and single-atom OER sites, which synergistically deliver exceptional bifunctional activity. The unique structure originates from the precise coordination of earth-abundant metal ions with the polyphenol ligand of natural tannic acid, providing well-defined active sites and efficient mass/electron transport. The optimized catalyst Co<small><sub>0.85</sub></small>Fe<small><sub>0.15</sub></small>@TA-Salphen exhibits outstanding ORR performance with a half-wave potential of 0.923 V (<em>vs.</em> RHE) and superior OER activity with an overpotential of only 282 mV at 10 mA cm<small><sup>−2</sup></small>, surpassing most reported bifunctional catalysts. When integrated into zinc–air batteries, the catalyst demonstrates high power density (198 mW cm<small><sup>−2</sup></small>) and excellent cycling stability (over 500 cycles), highlighting its potential for practical applications. This work not only presents a high-performing and durable bifunctional oxygen electrocatalyst with well-defined ORR/OER active sites but also highlights the potential of green, biomass-derived materials for advanced energy applications.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 2081-2089"},"PeriodicalIF":4.1,"publicationDate":"2026-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Methane synthesis from CO2 and H2O with concentrated NaOH–KOH electrolyte at 200–250 °C using electrochemical Pd–Ag membrane reactor 高浓度NaOH-KOH电解液在200-250℃下用电化学钯银膜反应器从CO2和H2O合成甲烷
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-26 DOI: 10.1039/D5SE01657F
Wakana Seki, Raisei Sagara, Aika Hirata and Jun Kubota
{"title":"Methane synthesis from CO2 and H2O with concentrated NaOH–KOH electrolyte at 200–250 °C using electrochemical Pd–Ag membrane reactor","authors":"Wakana Seki, Raisei Sagara, Aika Hirata and Jun Kubota","doi":"10.1039/D5SE01657F","DOIUrl":"https://doi.org/10.1039/D5SE01657F","url":null,"abstract":"<p >The synthesis of hydrocarbons from CO<small><sub>2</sub></small> and H<small><sub>2</sub></small>O using electricity derived from renewable energy sources has attracted considerable attention. However, there is currently no direct electrochemical method capable of selectively producing specific hydrocarbons from CO<small><sub>2</sub></small> reduction at low overpotentials. By employing an electrochemical membrane reactor that combines water electrolysis with thermocatalytic methanation, methane can be selectively produced at a cell voltage comparable to that of conventional water electrolysis. In this study, methane synthesis from CO<small><sub>2</sub></small> and H<small><sub>2</sub></small>O was investigated using an electrochemical membrane reactor equipped with a 30 wt%-Ru/C catalyst, Pd-based alloy membrane, and a NaOH–KOH eutectic electrolyte operating at approximately 250 °C. At 250 mA cm<small><sup>−2</sup></small> based on cathode geometric area and 250 °C, the methane and hydrogen production rate was 290 and 120 nmol s<small><sup>−1</sup></small> cm<small><sup>−2</sup></small>, corresponding to a current efficiency of 91 and 9%, respectively. However, when the current density exceeded 250 mA cm<small><sup>−2</sup></small>, the total current efficiency suddenly deviated significantly from 100%, indicating a decrease in current efficiency due to product cross-leak. At 300 mA cm<small><sup>−2</sup></small>, significant evolution of H<small><sub>2</sub></small> was detected in the anode-side exhaust gas. This cross-leak was also pronounced during operation below 200 °C. Impedance measurements determined that the specific resistance of the electrolyte at 250 °C was 0.50 S cm<small><sup>−1</sup></small>. The current efficiency and related characteristics of this methane synthesis method were discussed in detail.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 2070-2080"},"PeriodicalIF":4.1,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/se/d5se01657f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mitigating redox mediator-induced surface recombination for efficient photoelectrocatalytic benzyl alcohol oxidation on Mo-doped bismuth vanadate 减轻氧化还原介质诱导的高效光电催化苯甲醇氧化钼掺杂钒酸铋的表面复合
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-26 DOI: 10.1039/D6SE00110F
Chun-Chung Kuang, Yi-Wen Chen, Guan-Zhu Tu, Hong-Lin Chen, Jun-Lin Fong, Yi-Sheng Wang, Chia-Wei Chang, Jing-Yan Wu, Ting-Ting Chang, Chao-Hsien Chang, Hong-Kang Tian and Chang-Ming Jiang
{"title":"Mitigating redox mediator-induced surface recombination for efficient photoelectrocatalytic benzyl alcohol oxidation on Mo-doped bismuth vanadate","authors":"Chun-Chung Kuang, Yi-Wen Chen, Guan-Zhu Tu, Hong-Lin Chen, Jun-Lin Fong, Yi-Sheng Wang, Chia-Wei Chang, Jing-Yan Wu, Ting-Ting Chang, Chao-Hsien Chang, Hong-Kang Tian and Chang-Ming Jiang","doi":"10.1039/D6SE00110F","DOIUrl":"https://doi.org/10.1039/D6SE00110F","url":null,"abstract":"<p >Synthetic photoelectrochemistry offers a sustainable route for selective organic transformations under visible light, yet carrier recombination losses at the electrode–electrolyte interfaces remain a critical bottleneck. Although redox mediators are often employed to improve selectivity and circumvent kinetic barriers, their interactions with the photoelectrodes are not well understood. Here we show that <em>N</em>-hydroxysuccinimide (NHS), a widely used hydrogen atom transfer (HAT) mediator, dynamically adsorbs onto oxygen vacancies on BiVO<small><sub>4</sub></small> photoanodes, forming extrinsic interfacial states that trap photogenerated holes. Time-resolved photoelectrochemical and voltametric analyses reveal a direct correlation between this interfacial recombination pathway, photocurrent declines, and diminished reaction yields. Incorporating Mo dopant in BiVO<small><sub>4</sub></small> increases the oxygen-vacancy formation energy, while electrolyte cation tuning modulates the electrochemical double-layer structure, jointly suppressing NHS chemisorption and mitigating surface recombination. During selective PEC oxidation of benzyl alcohol to benzaldehyde, optimized Mo-doped BiVO<small><sub>4</sub></small> photoanodes achieve a conversion rate of 19.1 ± 1.4 µmol cm<small><sup>−2</sup></small> h<small><sup>−1</sup></small> with &gt;92% faradaic efficiency, representing the highest performance reported for BiVO<small><sub>4</sub></small>-based benzylic alcohol oxidation. These findings identify interfacial mediator adsorption as a previously overlooked recombination channel and establish rational interfacial design as a powerful strategy for broadly tunable, high-efficiency light-driven organic synthesis.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 2090-2100"},"PeriodicalIF":4.1,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co2NiO4/NF as a bidirectional catalyst for quinoxaline hydrogenation/tetrahydroquinoxaline dehydrogenation in flow batteries Co2NiO4/NF作为液流电池中喹啉加氢/四氢喹啉脱氢的双向催化剂
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-26 DOI: 10.1039/D6SE00166A
Fangcheng Qiu, Nan Wang, Bowen Chen, Xin Zheng, Hanyu Li, Xue Han, Shaowen Tan, Siyi Chen and Shengping Wang
{"title":"Co2NiO4/NF as a bidirectional catalyst for quinoxaline hydrogenation/tetrahydroquinoxaline dehydrogenation in flow batteries","authors":"Fangcheng Qiu, Nan Wang, Bowen Chen, Xin Zheng, Hanyu Li, Xue Han, Shaowen Tan, Siyi Chen and Shengping Wang","doi":"10.1039/D6SE00166A","DOIUrl":"https://doi.org/10.1039/D6SE00166A","url":null,"abstract":"<p >This study addresses key challenges in conventional catalysis for the quinoxaline/tetrahydroquinoxaline liquid organic hydrogen carrier (LOHC) pair. These challenges include high energy consumption, reliance on precious metals, and catalyst irreversibility. We developed a novel strategy for fabricating an efficient bifunctional electrode. This strategy is based on electrodeposition from a deep eutectic ionic liquid. The Co–Ni bimetallic catalyst (Co<small><sub>2</sub></small>NiO<small><sub>4</sub></small>/NF) was constructed on a nickel foam (NF) substrate. This was achieved <em>via</em> electrodeposition in a choline chloride–propylene glycol ionic liquid. Physicochemical characterization confirmed the catalyst's unique structure. This structure is a composite of metallic cobalt and cobalt–nickel oxide. It also features uniformly distributed active sites. Electrochemical tests demonstrate high activity and selectivity for Co<small><sub>2</sub></small>NiO<small><sub>4</sub></small>/NF. It performs well in both the electrocatalytic hydrogenation of quinoxaline and the electrocatalytic dehydrogenation of tetrahydroquinoxaline. The catalyst also shows excellent cycling stability in both reactions. This enables efficient bidirectional catalysis for the reversible hydrogen storage and release processes of LOHCs on a single catalyst platform. Under optimal potentials, the faradaic efficiency reached 99.84% (with 98.73% selectivity) for hydrogenation. For dehydrogenation, it reached 99.07% (with 98.96% selectivity). The performance enhancement is attributed to the electronic synergy between Co and Ni. This synergy optimizes the electrode's conductivity and reactant adsorption behavior. Furthermore, the reversible valence cycling of the cobalt/nickel redox couple provides a distinct kinetic advantage, continuously facilitating both the hydrogenation and dehydrogenation processes. This work provides a new material system and design approach. It aids in the development of low-cost, high-performance bifunctional catalysts for LOHCs and also promotes progress toward the practical application of quinoxaline-based organic flow batteries.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 9","pages":" 2230-2244"},"PeriodicalIF":4.1,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147827000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermophysical characterization of a new potential bio-oxygenate fuel formed by hexane, ethanol and diethyl carbonate 由己烷、乙醇和碳酸二乙酯合成的新型生物含氧燃料的热物性表征
IF 4.1 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2026-03-26 DOI: 10.1039/D6SE00129G
Ariel. Hernández, Marcela. Cartes and Andrés. Mejía
{"title":"Thermophysical characterization of a new potential bio-oxygenate fuel formed by hexane, ethanol and diethyl carbonate","authors":"Ariel. Hernández, Marcela. Cartes and Andrés. Mejía","doi":"10.1039/D6SE00129G","DOIUrl":"https://doi.org/10.1039/D6SE00129G","url":null,"abstract":"<p >The thermophysical characterization of a new potential bio-oxygenate fuel formed by ethanol, diethyl carbonate, and hexane is carried out by the direct determinations and theoretical predictions of the selected fundamental thermophysical properties (<em>i.e.</em>, vapor–liquid equilibria, dynamic viscosity, and surface tension) over the entire mole fraction range. Specifically, vapor–liquid equilibria (VLE) are reported at 94.00 kPa, over 330.0 K to 356.0 K, while liquid dynamic viscosity and surface tension are explored at 298.15 K and 101.3 kPa. The experimental VLE are modeled using the Perturbed Chain Statistical Associating Fluid Theory Equation of State (PC-SAFT EoS), which accounts for hydrogen bonding interactions between alcohol molecules and cross-interactions with the negative sites on the diethyl carbonate molecule. For the other two reported properties, the PC-SAFT EoS is coupled with free-volume theory and linear gradient theory, respectively. The advantage of this combined approach is that all required parameters are obtained from the corresponding pure fluids and binary mixtures that form the ternary mixture; therefore, the thermophysical properties of the ternary mixture are completely predicted. Based on experimental determinations and theoretical modeling, the VLE of the ternary mixture exhibits a positive deviation from Raoult's law, indicating zeotropic behavior under the conditions explored. The dynamic viscosities and surface tension display a monotonic behavior with the mole fraction. Finally, the combination of experimental measurements and molecular-based theoretical model provides a reliable framework to predict with physical sound and good accuracy these thermophysical properties over a broad range of temperature, pressure, and mole fractions that can be safely used to carry out further evaluations related to the use of this oxygenate fuel in complementary engine tests.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 8","pages":" 1947-1958"},"PeriodicalIF":4.1,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/se/d6se00129g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147727280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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