Energy advances最新文献

{"title":"Effective electrochemical water oxidation to H2O2 based on a bimetallic Fe/Co metal–organic framework","authors":"Kunpeng Liu, Xu Wang, Nan Wang, Ruiyong Zhang, Meinan Yang, Baorong Hou and Wolfgang Sand","doi":"10.1039/D4YA00477A","DOIUrl":"10.1039/D4YA00477A","url":null,"abstract":"<p >Rationally designing high-efficiency catalysts for electrochemical two-electron water oxidation reaction (2e<small>⁻</small> WOR) to produce hydrogen peroxide (H<small>₂</small>O<small>₂</small>) is extremely important, while designing bimetallic metal–organic frameworks (MOFs) is of great significance for effective 2e<small>⁻</small> WOR. Herein, MIL-53(Fe) and different proportions of Co-doped MIL-53(Fe) were prepared by a hydrothermal method. The structural characterization and elemental analysis showed that the Co ions were successfully doped into MIL-53(Fe) to form a MIL-53(Fe/Co) bimetallic MOF, and the morphology of MIL-53(Fe/Co) became more regular after Co doping. We found that the optimized MIL-53(Fe/Co) exhibits remarkable 2e<small>⁻</small> WOR performance, which gave an overpotential of 150 mV at 1 mA cm<small>⁻²</small>. The overpotential of MIL-53(Fe/Co) was approximately 220 mV (at 1 mA cm<small>⁻²</small>) lower than that of MIL-53(Fe), which may be attributed to the change of microstructure of MIL-53(Fe) after Co doping and the synergistic effect between Fe/Co. Our work introduces a strategy for designing bimetallic MOF-based electrocatalysts, opening up new possibilities for efficient 2e<small>⁻</small> WOR systems.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 11","pages":" 2842-2850"},"PeriodicalIF":3.2,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00477a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Open circuit voltage of an all-vanadium redox flow battery as a function of the state of charge obtained from UV-Vis spectroscopy†","authors":"Jana Heiß and Maximilian Kohns","doi":"10.1039/D4YA00360H","DOIUrl":"10.1039/D4YA00360H","url":null,"abstract":"<p >A unique feature of redox flow batteries (RFBs) is that their open circuit voltage (OCV) depends strongly on the state of charge (SOC). In the present work, this relation is investigated experimentally for the all-vanadium RFB (AVRFB), which uses vanadium ions of different oxidation states as redox pairs in both half-cells. In contrast to several literature studies, which use OCV measurements to deduce the SOC <em>via</em> the Nernst equation, we propose a method based on UV-Vis spectroscopy for SOC estimation, thereby enabling completely independent SOC and OCV measurements. Moreover, rather than relying on data at a single wavelength this UV-Vis method uses the entire absorption spectrum to obtain more robust values for the SOC. The obtained SOC-OCV data agree reasonably well with literature values and reveal a significant influence of the thermodynamic non-ideality of the solutions on the OCV as described by the Nernst equation.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 10","pages":" 2597-2603"},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00360h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of N-doped zeolite-templated carbons via depolymerized oligomer filling: applications in EDLC electrodes†","authors":"Hiroyuki Itoi, Chika Matsuoka, Ginga Saeki, Hiroyuki Iwata, Shinichiroh Iwamura, Keigo Wakabayashi, Takeharu Yoshii, Hirotomo Nishihara and Yoshimi Ohzawa","doi":"10.1039/D4YA00400K","DOIUrl":"10.1039/D4YA00400K","url":null,"abstract":"<p >Zeolite-templated carbons (ZTCs) are widely studied from basic research to applied research owing to their characteristic pore structures. To synthesize ZTCs, molecules with a size smaller than the pore sizes of template zeolites have been used as carbon sources for their carbonization in the zeolite pores. Therefore, the type of carbon sources has been limited to molecules with a size smaller than the pore sizes of zeolites. In this study, highly structurally regular N-doped zeolite-templated carbons are synthesized using propylene as a carbon source and chitin as both carbon and nitrogen sources <em>via</em> a depolymerized oligomer filling (DOF) mechanism. Chitin, the second most abundant biopolymer on the Earth, consists of <em>N</em>-acetylglucosamine (GlcNAc) as its unit structure and has a much larger size than the zeolite pores. NaY zeolite is used as a template without drying and mixed with chitin. The mixture is subjected to chemical vapor deposition (CVD) using propylene and subsequent heat treatment for graphitization, followed by HF etching for zeolite removal. Upon heating the mixture of the zeolite and chitin, chitin is catalytically depolymerized into chitin oligosaccharide radicals by the zeolite, and the radicals are absorbed into the zeolite pores below 450 °C, which is supported by electron spin resonance and N<small>₂</small> adsorption/desorption analyses. The ZTC structure is completed by propylene CVD for adequately filling carbon into the zeolite pores. A validation experiment is conducted using GlcNAc instead of chitin to confirm that the N-doped ZTC is synthesized <em>via</em> the DOF mechanism. The resulting N-doped ZTCs have high structural regularity and high surface areas ranging from 3420 to 3740 m<small>²</small> g<small>⁻¹</small>, and show a higher area-normalized capacitance than undoped ZTC as electric double-layer capacitor electrodes. Utilizing chitin from crustacean shells as one of the raw materials highlights an innovative approach to waste reduction and advances sustainable materials science, contributing to the circular economy and sustainable development goals.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 11","pages":" 2764-2777"},"PeriodicalIF":3.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00400k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ag–NiP deposited green carbon channel embedded NiP panels for sustainable water splitting†","authors":"Revathy B. Nair, A. Anantha Krishnan, Aneesh Kumar M. A., Sivaraj Rajendran, Sreehari Harikumar, Vidhya C., M. Ameen Sha, Thomas Mathew, Sajith Kurian and P. S. Arun","doi":"10.1039/D4YA00463A","DOIUrl":"10.1039/D4YA00463A","url":null,"abstract":"<p >Ag–NiP-deposited carbon channels on NiP panels were successfully developed through lemon juice extract (Ag–CL/NiP) and citric acid (Ag–CC/NiP)-assisted methodologies. The methods involved the precise execution of electroless deposition of the advanced Ag–carbon matrix with NiP. The lemon juice-assisted method produced carbon channels with a dense concentration of Ag–NiP on the electrode surface, whereas the citric acid method resulted in a less dense deposition of Ag–NiP on the electrode surface, as observed <em>via</em> FE-SEM. The Ag–CL/NiP has remarkably higher electro- and photocatalytic water splitting performance due to the compact and conductive Ag–NiP connected with carbon channels. Electrochemical impedance analysis of Ag–CL/NiP revealed a low <em>R</em><small>_ct</small> of 491.3 Ω at the open circuit potential, indicating enhanced conductivity. The electrocatalytic oxygen evolution reaction (OER) overpotential of Ag–CL/NiP was 401 mV to achieve a current density of 50 mA cm<small>⁻²</small>, with a Tafel slope of 46.5 mV dec<small>⁻¹</small>. The panel exhibited good stability, with a proven durability of over 1000 cycles of CV during OER. The developed panel achieved an impressive photocurrent density of ∼9.5 mA cm<small>⁻²</small> at 1.37 V <em>vs.</em> RHE when subjected to light irradiation with a wavelength exceeding 420 nm. Furthermore, the Ag–CL/NiP panel demonstrated the ability to generate 17.5 mmol cm<small>⁻²</small> of H<small>₂</small> over a 4-hour sunlight irradiation period. The temperature-controlled photocatalytic water splitting experiment revealed that the panel maintained its activity at temperatures as low as ∼12 °C, but with a 40% drop in efficiency compared to normal sunlight conditions.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 11","pages":" 2790-2800"},"PeriodicalIF":3.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00463a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical and spectroscopic characterisation of organic molecules with high positive redox potentials for energy storage in aqueous flow cells†","authors":"Christopher G. Cannon, Peter A. A. Klusener, Nigel P. Brandon and Anthony R. J. Kucernak","doi":"10.1039/D4YA00366G","DOIUrl":"10.1039/D4YA00366G","url":null,"abstract":"<p >We show that a number of ubiquitous organic molecules used as redox mediators and chemically sensing species can be used as positive couples in electrochemical energy storage. Air and acid stable organic molecules were tested in aqueous acid electrolytes and employed as the positive electrolyte in H<small>₂</small>–organic electrochemical cells. The dissolved organic species were characterised <em>in-operando</em> using UV-vis spectroscopy. <em>N,N,N</em>′<em>,N</em>′-tetramethylbenzidine was found to be a stable and reversible redox organic molecule, with a 2 e<small>⁻</small> molecule<small>⁻¹</small> capacity and a 0.83 V cell potential. <em>N</em>-Oxyl species were also tested in purely aqueous acidic flow battery electrolytes. A H<small>₂</small>–violuric acid cell produced a reversible potential of 1.16 V and demonstrated promising redox flow cell cycling performance.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 10","pages":" 2587-2596"},"PeriodicalIF":3.2,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00366g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tautomerism and nucleophilic addition influence the performance of aqueous organic redox flow batteries of chelidamic acid and chelidonic acid†","authors":"Surya Prakash, Alagar Ramar, Fu-Ming Wang, Kefyalew Wagari Guji, Citra Deliana Dewi Sundari and Laurien Merinda","doi":"10.1039/D4YA00331D","DOIUrl":"10.1039/D4YA00331D","url":null,"abstract":"<p >The redox flow battery is a cost-effective solution for grid-scale energy storage. Its special feature of separate reservoirs and electrodes makes it easy to adjust the electrolyte volume and electrode size, improving safety and scalability. In this work, we explore two organic anolytes, chelidamic acid (CDA) and chelidonic acid (CDO), which share similar molecular weight but differ in their heteroatoms: pyridone and pyrone. The half-cell potentials of the CDA and CDO anolytes enable them to exhibit theoretical cell voltages of 0.49 V and 0.48 V, respectively, when coupled with K<small>₄</small>[Fe<small>^II</small>(CN)<small>₆</small>] catholyte. CDA demonstrated a stable discharge capacity of 650 mA h L<small>⁻¹</small> over 17 days in a basic medium without any degradation. In contrast, CDO gradually loses its capacity over successive cycles. The mechanism for the decomposition of CDO was analysed through cyclic voltammetry, <small>¹</small>H-NMR, and FTIR spectroscopy techniques. The analytical results revealed that there was a significant impact of tautomerization in CDA and nucleophilic addition in CDO on the performance in ARFBs.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 11","pages":" 2778-2789"},"PeriodicalIF":3.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00331d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-metal (Fe, Cu, and Zn) coordinated hollow porous dodecahedron nanocage catalyst for oxygen reduction in Zn–air batteries†","authors":"Yanan Pan, Qi Yang, Xiaoying Liu, Fan Qiu, Junjie Chen, Mengdie Yang, Yang Fan, Haiou Song and Shupeng Zhang","doi":"10.1039/D4YA00295D","DOIUrl":"10.1039/D4YA00295D","url":null,"abstract":"<p >The coupling of multiple low-cost metals and porous nanocarbon materials aimed at replacing precious metals to enhance electrocatalytic oxygen reduction is a critical challenge in some crucial research areas. In the present study, a hollow dodecahedron nanocage catalyst (Fe<small>₃</small>O<small>₄</small>/CuNCs/ZnN<small>_<em>x</em></small>-PHNC) was constructed by supporting copper nanoclusters, Fe<small>₃</small>O<small>₄</small> nanoparticles, and Zn–N<small>_<em>x</em></small> after sintering and annealing through the coordination of ZIF-8 and by doping copper and iron ions. We observed that the synergy of the multi-metals in the magnetically separable heterojunction catalyst induced electron transfer and inhibited hydrogen peroxide formation, thus improving its catalytic performance for the oxygen-reduction reaction. The catalyst demonstrated a half-wave potential as high as 0.832 V and a Tafel slope of 54 mV decade<small>⁻¹</small>, superior to many non-precious metal catalysts reported in the literature. The assembled Zn–air battery (ZAB) exhibited a maximum power density of 162 mW cm<small>⁻²</small> and ultrahigh stability of &gt;500 h at 5 mA cm<small>⁻²</small> current density. The ZAB's excellent performance indicates its high development and practical application prospects.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 10","pages":" 2648-2657"},"PeriodicalIF":3.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00295d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of an automated SILAR method for the sustainable fabrication of BiOI/TiO2 photoanodes†","authors":"Roberto Altieri, Fabian Schmitz, Manuel Schenker, Felix Boll, Luca Rebecchi, Pascal Schweitzer, Matteo Crisci, Ilka Kriegel, Bernd Smarsly, Derck Schlettwein, Francesco Lamberti, Teresa Gatti and Mengjiao Wang","doi":"10.1039/D4YA00405A","DOIUrl":"10.1039/D4YA00405A","url":null,"abstract":"<p >BiOI is a promising material for use in photoelectrocatalytic water oxidation, renowned for its chemical inertness and safety in aqueous media. For device integration, BiOI must be fabricated into films. Considering future industrial applications, automated production is essential. However, current BiOI film production methods lack automation and efficiency. To address this, a continuous automated process is introduced in this study, named AutoDrop, for producing BiOI films. Autodrop results to be a fast and facile method for producing BiOI photoelectrodes. Nanostructured thin films of this layered material are prepared using a syringe pump to dispense the precursor solution onto a continuously spinning substrate. These films are integrated into a multilayered photoelectrode, featuring mesoporous TiO<small>₂</small> as an electron-transporting layer on top of FTO glass. In testing the photoelectrochemical performance of the BiOI/TiO<small>₂</small> photoelectrodes, the highest photocurrent (44 μA cm<small>⁻²</small>) is found for a heterojunction with a BiOI thickness of 320 nm. Additionally, a further protective TiO<small>₂</small> ultrathin layer in contact with BiOI, grown by atomic layer deposition, enhances the durability and efficiency of the photoanode, resulting in a more than two-fold improvement in photocurrent after 2 hours of continuous operation. This study advances the automation in the sustainable production of photoelectrode films and provides inspiration for further developments in the field.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 10","pages":" 2564-2574"},"PeriodicalIF":3.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00405a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in in situ/operando characterization of lithium–sulfur batteries","authors":"Thomas J. Leckie, Stuart D. Robertson and Edward Brightman","doi":"10.1039/D4YA00416G","DOIUrl":"10.1039/D4YA00416G","url":null,"abstract":"<p >The lithium–sulfur battery (LSB) is a next generation energy storage technology with potential to replace lithium-ion batteries, due to their larger specific capacity, cheaper and safer manufacturing materials, and superior energy density. LSBs are a rapidly progressing topic globally, with around 1800 publications each year and the market is expected to exceed 1.7 billion USD by 2028, as such many novel strategies are being explored to develop and commercialise devices. However, significant technical challenges must be solved to engineer LSBs with commercially viable cycle life, which requires a deeper understanding of the chemical mechanisms occurring within the battery structure. In recent years <em>in situ</em>/<em>operando</em> testing of LSBs has become a popular approach for deciphering the kinetics and mechanisms of their discharge process, which is notoriously complex, and visualising the effects of mass deposition onto the electrodes and how these factors affect the cell's performance. In this review, <em>in situ</em> and <em>operando</em> studies are discussed in the context of LSBs with particular focus on spectroscopic and morphological techniques in line with trends in the literature. Additionally, some techniques have been covered which have yet to be used widely in the literature but could prove to be invaluable tools for analysis in the future. These <em>in situ</em>/<em>operando</em> techniques are becoming more widely available, and a review is useful both for the research community and industry to help accelerate the commercialisation of this next-generation technology.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 10","pages":" 2479-2502"},"PeriodicalIF":3.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00416g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controlled synthesis of copper sulfide-based catalysts for electrochemical reduction of CO2 to formic acid and beyond: a review","authors":"Anirban Mukherjee, Maryam Abdinejad, Susanta Sinha Mahapatra and Bidhan Chandra Ruidas","doi":"10.1039/D4YA00302K","DOIUrl":"10.1039/D4YA00302K","url":null,"abstract":"<p >Converting carbon dioxide (CO<small>₂</small>) into value-added chemicals is considered as a promising strategy to mitigate climate change. Among the various CO<small>₂</small> reduction techniques, electrochemical CO<small>₂</small> reduction (ECO<small>₂</small>R) using renewable energy sources holds significant potential. Consequently, the design and development of electrocatalysts capable of offering both high performance and cost-effectiveness hold the potential to expedite reaction kinetics and facilitate widespread industrial adoption. In recent years, abundant copper sulfide (Cu/S)-based nanomaterials among various metal–chalcogenides have attracted extensive research interest due to their semiconductivity and low toxicity, enabling them to be used in a wide range of applications in the ECO<small>₂</small>R field. This review highlights the progress in engineered Cu/S-based nanomaterials for ECO<small>₂</small>R reactions and elaborates on the correlations between engineering strategies, catalytic activity, and reaction pathways. This paper also summarises the controllable synthesis methods for fabricating various state-of-the-art Cu/S-based structures and outlines their possible implementation as electrocatalysts for CO<small>₂</small> reduction. Finally, challenges and prospects are presented for the future development and practical applications of Cu/S-based catalysts for ECO<small>₂</small>R to value-added chemicals.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 11","pages":" 2704-2737"},"PeriodicalIF":3.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ya/d4ya00302k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}