Sustainable Energy & Fuels最新文献

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Interfacial engineering of a bifunctional electrocatalyst with outstanding catalytic performance, high intrinsic activity and solar-to-hydrogen conversion efficiency†
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-29 DOI: 10.1039/D4SE01320D
Muthukumaran Sangamithirai, Murugan Vijayarangan, Murugan Muthamildevi, Venkatachalam Ashok and Jayaraman Jayabharathi
{"title":"Interfacial engineering of a bifunctional electrocatalyst with outstanding catalytic performance, high intrinsic activity and solar-to-hydrogen conversion efficiency†","authors":"Muthukumaran Sangamithirai, Murugan Vijayarangan, Murugan Muthamildevi, Venkatachalam Ashok and Jayaraman Jayabharathi","doi":"10.1039/D4SE01320D","DOIUrl":"https://doi.org/10.1039/D4SE01320D","url":null,"abstract":"<p >Carbides are commonly regarded as efficient hydrogen evolution reaction (HER) catalysts, but their poor oxygen evolution reaction (OER) catalytic activities seriously limit their practical application in overall water splitting. Herein, embedded nanosheets and plates of cobalt oxy carbide (Co–O–C/CPs) were successfully synthesized as an efficient bifunctional electrocatalyst using a solvent-free combustion process. To contribute to the clarification of catalytic particle composition during electrochemical reactions, we thoroughly characterized the Co–O–C/CPs using HR-TEM, which revealed that the filled nanoplates, with a cobalt oxide shell and cobalt carbide core, were wrapped with carbon. During electrochemical reactions, the filled nanoplates changed to an amorphous state owing to the decomposition of the crystalline material. After amorphization, the Co–O–C/CPs maintained the shape of the parent compound and exhibited a higher electrochemically active surface area (ECSA) and thereby demonstrated enhanced HER (115 mV) and OER (240 mV) performances at 10 mA cm<small><sup>−2</sup></small>. When applying the Co–O–C/CPs as both the cathode and anode, a lower cell voltage of 1.60 V was required at 10 mA cm<small><sup>−2</sup></small> than that for the benchmark catalyst IrO<small><sub>2</sub></small>/Pt/C/NF (1.63 V) with great stability in alkaline solution. This work provides a feasible strategy to fabricate cobalt oxy carbides and explores their possibility as bifunctional catalysts for water splitting.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 256-268"},"PeriodicalIF":5.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844660","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
Fluorine-rich Schiff base ligand derived Fe/N–C–F and Co/N–C–F catalysts for the oxygen reduction reaction: synthesis, experimental validation, and DFT insights† 用于氧还原反应的富氟希夫碱配体衍生 Fe/N-C-F 和 Co/N-C-F 催化剂:合成、实验验证和 DFT 见解†。
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-28 DOI: 10.1039/D4SE01370K
Sumanta Kumar Das, Shaik Gouse Peera, Aiswarya Kesh, Prabakaran Varathan and Akhila Kumar Sahu
{"title":"Fluorine-rich Schiff base ligand derived Fe/N–C–F and Co/N–C–F catalysts for the oxygen reduction reaction: synthesis, experimental validation, and DFT insights†","authors":"Sumanta Kumar Das, Shaik Gouse Peera, Aiswarya Kesh, Prabakaran Varathan and Akhila Kumar Sahu","doi":"10.1039/D4SE01370K","DOIUrl":"https://doi.org/10.1039/D4SE01370K","url":null,"abstract":"<p >The development of cost effective and durable catalysts for the electrochemical reduction of O<small><sub>2</sub></small> to H<small><sub>2</sub></small>O is paramount for energy conversion devices such as fuel cells and Zn–air batteries. In this research work, we have developed a unique strategy for the synthesis of active and stable electrocatalysts comprising Fe and Co transition metals in combination with N and F dopants in the carbon matrix. This research also introduces an innovative approach for synthesizing Fe/N–C–F and Co/N–C–F electrocatalysts utilizing organic Schiff base ligands and their coordination complexes with Fe and Co transition metals. The synthesized Fe/N–C–F and Co/N–C–F catalysts have been systematically evaluated for their physicochemical properties and electronic states by using HR-TEM, XPS analysis and electrochemical characterization in 0.1 M aqueous KOH electrolyte. The optimized Fe/N–C–F catalyst shows a half-wave potential of 0.88 V <em>vs.</em> RHE and superior durability evaluated up to 20 000 cycles with only a marginal potential drop of ∼27 mV in its <em>E</em><small><sub>1/2</sub></small> potential value compared to the Pt/C catalyst. Furthermore, the reaction pathway and Gibbs free energy of the ORR intermediates in Fe/N–C–F and Co/N–C–F catalysts have been evaluated by DFT analysis.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 231-246"},"PeriodicalIF":5.0,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844649","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
Electrocatalytic conversion of biomass-derived oxygenated aromatics to cycloalkanes†
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-27 DOI: 10.1039/D4SE01149J
Meheryar R. Kasad, James E. Jackson and Christopher M. Saffron
{"title":"Electrocatalytic conversion of biomass-derived oxygenated aromatics to cycloalkanes†","authors":"Meheryar R. Kasad, James E. Jackson and Christopher M. Saffron","doi":"10.1039/D4SE01149J","DOIUrl":"https://doi.org/10.1039/D4SE01149J","url":null,"abstract":"<p >Electrocatalytic hydrotreatment (ECH) was explored as a mild technique to convert oxygenated aromatics, present in oils derived from the deconstruction of lignocellulosic biomass or lignin, into cycloalkanes. Producing cycloalkanes in a one-pot system, as envisioned in the present study, requires that both hydrodeoxygenation and aromatic ring saturation occur electrocatalytically. Thus, an activated carbon cloth-supported ruthenium and platinum (RuPt/ACC) electrocatalyst was synthesized and used to conduct model compound ECH studies to determine substrate conversion, product yields, and faradaic efficiency, enabling the derisking of the electrocatalytic process. The effects of electrocatalyst composition and aromatic ring substituents on cycloalkane yield were examined. Furthermore, ECH of side products and probable intermediates was conducted to map reaction sequences and pathways. Finally, ECH of a 4-O-5 dimer model compound was conducted to study the electrocatalytic cleavage of recalcitrant interunit linkages in lignin.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 217-230"},"PeriodicalIF":5.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/se/d4se01149j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844648","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
YFO photocathode fabricated via spray pyrolysis for unassisted solar water splitting for generation of hydrogen fuel†
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-26 DOI: 10.1039/D4SE01276C
Bandar Y. Alfaifi, Hameed Ullah, Xin Jiang and Asif Ali Tahir
{"title":"YFO photocathode fabricated via spray pyrolysis for unassisted solar water splitting for generation of hydrogen fuel†","authors":"Bandar Y. Alfaifi, Hameed Ullah, Xin Jiang and Asif Ali Tahir","doi":"10.1039/D4SE01276C","DOIUrl":"https://doi.org/10.1039/D4SE01276C","url":null,"abstract":"<p >Efficient solar to fuel conversion technology is highly desirable to meet future global renewable energy demands as conventional energy resources are environmentally irresponsible and depleting rapidly. Photoelectrochemical (PEC) water splitting without the use of any external potential bias and/or assistance to produce hydrogen (a clean and renewable fuel) is a technology having the potential to fulfil this desire. However, the main bottleneck is the unavailability of cost-effective, efficient and stable photoelectrodes, which are used to conduct water splitting using light photons. YFeO<small><sub>3</sub></small> (YFO) thin films with a small energy band gap (<em>E</em><small><sub>g</sub></small>), suitable band positions straddling water redox potential and high stability were fabricated using a simple, cost-effective and scalable synthesis technique <em>i.e.</em>, spray pyrolysis. The optimum YFO film was applied, for the first time to the best of our knowledge, for generation of hydrogen fuel through water splitting without applying any external potential bias and/or assistance. Orthorhombic YFO (o-YFO) showed a maximum photocurrent of ∼0.65 mA cm<small><sup>−2</sup></small> at 0.46 V <em>vs.</em> RHE, faradaic efficiency of ∼70%, and excellent stability spanning over 6 hours. UV-visible and electrochemical impedance spectroscopy (EIS) revealed the p-type characteristic, narrow <em>E</em><small><sub>g</sub></small> of 2.45 eV and suitable band positions, which encompassed the redox potential of water, of the o-YFO film. The o-YFO film generated 0.41 µmol cm<small><sup>−2</sup></small> of hydrogen over 6 hours without any assistance in a spontaneous hydrogen evolution reaction (HER). In a subsequent cycle, it generated 0.35 µmol cm<small><sup>−2</sup></small> of hydrogen, showing its potential as a reusable photoelectrode in the HER. Post HER characterizations did not show any visible/significant changes in the phase and morphology of the o-YFO film, indicating its stability under the applied HER conditions.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 208-216"},"PeriodicalIF":5.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/se/d4se01276c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844647","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 review of water management in proton exchange membrane fuel cell systems
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-25 DOI: 10.1039/D4SE01020E
Peihan Qi, Zhenxing Wu, Jiegang Mou, Denghao Wu, Yunqing Gu, Maosen Xu, Zekai Li and Yang Luo
{"title":"A review of water management in proton exchange membrane fuel cell systems","authors":"Peihan Qi, Zhenxing Wu, Jiegang Mou, Denghao Wu, Yunqing Gu, Maosen Xu, Zekai Li and Yang Luo","doi":"10.1039/D4SE01020E","DOIUrl":"https://doi.org/10.1039/D4SE01020E","url":null,"abstract":"<p >Water management has been an unavoidable problem for proton exchange membrane fuel cells (PEMFCs), and effective water management measures can improve the performance and extend the lifespan of the PEMFC. The water management state of the PEMFC system is influenced by various operating conditions, and these operating conditions are adjusted using external devices. To understand how to achieve an optimal water management state in the PEMFC system, this review summarizes the main influencing factors in water management, including temperature, humidity and pressure. Then, a generalized overview of the key devices for controlling the above factors in water management is provided, including gas supply devices and humidifiers. Afterwards, the control methods of the above devices are summarized, including conventional control methods and neural network control methods. At last, the whole paper is summarized and appropriate recommendations are given for the study of water management, the direction of optimization of the device and the improvement of control methods in the future.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 72-97"},"PeriodicalIF":5.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844665","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
Mixed 2D-cation passivation towards improved durability of perovskite solar cells and dynamics of 2D-perovskites under light irradiation and at high temperature†
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-21 DOI: 10.1039/D4SE01227E
Santa Mondal, Naoto Eguchi, Naoyuki Nishimura, Yoyo Hinuma, Kohei Yamamoto, Atsushi Kogo, Takurou N. Murakami and Hiroyuki Kanda
{"title":"Mixed 2D-cation passivation towards improved durability of perovskite solar cells and dynamics of 2D-perovskites under light irradiation and at high temperature†","authors":"Santa Mondal, Naoto Eguchi, Naoyuki Nishimura, Yoyo Hinuma, Kohei Yamamoto, Atsushi Kogo, Takurou N. Murakami and Hiroyuki Kanda","doi":"10.1039/D4SE01227E","DOIUrl":"https://doi.org/10.1039/D4SE01227E","url":null,"abstract":"<p >A low-dimensional perovskite layer is important as a passivation layer for the 3D perovskite photo-absorber to increase the photovoltaic performance and stability. Here, we provide an effective passivation technique that enhances the durability of perovskite solar cells and investigate the impact of the 2D perovskite on the photovoltaic properties under light irradiation as well as high-temperature conditions. Our proposed mixed 2D cation (<em>n</em>-butylammonium iodide (BAI) and <em>n</em>-octylammonium iodide (OAI)) passivation can control the opto-electronic properties of the 2D perovskites and improve the durability of perovskite solar cells. Furthermore, our main finding is that the migration of the 2D perovskite into the 3D perovskite layer, during light and high-temperature stability tests, causes the reduction of the photovoltaic properties of the perovskite solar cells. This information suggests how to design the 2D perovskite layer leading to stable perovskite solar cells from the viewpoint of cation migration, which can be the novel design strategy for the 2D/3D perovskite system.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 247-255"},"PeriodicalIF":5.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/se/d4se01227e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844659","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
Cobalt-doped vanadium nitride composite carbon hollow spheres for enhanced lithium–sulfur battery performance: overcoming sulfur dissolution and the shuttle effect†
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-21 DOI: 10.1039/D4SE01208A
Jiangnan Zhang, Yanshuang Meng and Fuliang Zhu
{"title":"Cobalt-doped vanadium nitride composite carbon hollow spheres for enhanced lithium–sulfur battery performance: overcoming sulfur dissolution and the shuttle effect†","authors":"Jiangnan Zhang, Yanshuang Meng and Fuliang Zhu","doi":"10.1039/D4SE01208A","DOIUrl":"https://doi.org/10.1039/D4SE01208A","url":null,"abstract":"<p >This study addresses the challenges of sulfur dissolution and the shuttle effect in the practical application of lithium–sulfur (Li–S) batteries by developing cobalt-doped vanadium nitride composite carbon hollow spheres (CoVN/C-HS). The embedding of CoVN nanoparticles within the carbon hollow spheres creates an efficient charge transport network that significantly reduces electrode interfacial resistance, accelerates charge transfer during charging and discharging, and effectively mitigates polarization, thereby ensuring battery stability under high-rate conditions. Additionally, the strong interaction between CoVN nanoparticles and the carbon hollow sphere matrix enhances the material's adsorption capacity for polysulfides, effectively suppressing their dissolution and shuttle effect, which prolongs battery cycle life. Therefore, the prepared CoVN/C-HS material has demonstrated excellent performance in Li–S battery applications. At a low current density of 0.05C, the battery achieved an initial discharge capacity of up to 1475 mA h g<small><sup>−1</sup></small>, fully demonstrating the efficient utilization of sulfur by the material. Remarkably, even after 100 cycles at 0.2C, the battery retains a capacity of 1067 mA h g<small><sup>−1</sup></small>, showcasing excellent cycle stability. Notably, at a high current density of 2C, the battery achieves an initial capacity of 918.8 mA h g<small><sup>−1</sup></small> and maintains 662 mA h g<small><sup>−1</sup></small> after 400 cycles. This success not only presents a novel approach for optimizing Li–S battery performance by meticulously tuning the material structure and composition to concurrently address sulfur dissolution and the shuttle effect but also lays a solid foundation for the large-scale commercialization of this battery type.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 280-289"},"PeriodicalIF":5.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844662","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
Advances in plastic to fuel conversion: reactor design, operational optimization, and machine learning integration
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-20 DOI: 10.1039/D4SE01045K
Karnatakam Paavani, Krutika Agarwal, Shah Saud Alam, Srikanta Dinda and Iyman Abrar
{"title":"Advances in plastic to fuel conversion: reactor design, operational optimization, and machine learning integration","authors":"Karnatakam Paavani, Krutika Agarwal, Shah Saud Alam, Srikanta Dinda and Iyman Abrar","doi":"10.1039/D4SE01045K","DOIUrl":"https://doi.org/10.1039/D4SE01045K","url":null,"abstract":"<p >Plastic waste management is a pressing global problem that requires sustainable solutions to mitigate environmental harm. To this end, pyrolysis offers a practical method for converting waste plastics into valuable resources such as oil, gas, and char. This review comprehensively examines plastic pyrolysis, focusing on reactor diversity, operational variables, and the integration of machine learning (ML) techniques for process optimization. Understanding the reactor designs is crucial for tailoring pyrolysis processes to achieve specific product yield and composition targets. For example, a fluidized bed reactor offers continuous productivity and efficient mass transfer, whereas fixed bed pyrolysis reactors are suited for secondary pyrolysis reactions. Similarly, vacuum pyrolysis reactors operate under reduced pressure to minimize undesired reactions, and conical-spouted bed reactors display effective blending capabilities. Operational parameters such as residence time, temperature, and pressure significantly influence pyrolysis outcomes. Longer residence times and lower temperatures favor oil production, whereas higher temperatures promote gas formation. Optimal parameter settings can enhance pyrolysis efficiency and maximize product yields while ensuring environmental sustainability. ML emerges as a powerful tool for predictive modeling, interpretation, and optimization of pyrolysis processes. ML algorithms like neural networks and support vector regression techniques enable relatively accurate forecasting of product yields and properties, and can help researchers gain insights into complex pyrolysis kinetics for further tuning of process parameters to achieve desired outcomes. Overall, the synergistic integration of reactor design, operational parameters, and machine learning techniques can improve product yield and quality, minimize environmental impact, and advance sustainable plastic waste management efforts while promoting a circular economy model.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 54-71"},"PeriodicalIF":5.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/se/d4se01045k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844664","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
Cooperating with additives: low-cost hole-transporting materials for improved stability of perovskite solar cells† 与添加剂合作:提高过氧化物太阳能电池稳定性的低成本空穴传输材料†。
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-20 DOI: 10.1039/D4SE01356E
Paavo Mäkinen, Daniele Conelli, G. Krishnamurthy Grandhi, Gian Paolo Suranna, Paola Vivo and Roberto Grisorio
{"title":"Cooperating with additives: low-cost hole-transporting materials for improved stability of perovskite solar cells†","authors":"Paavo Mäkinen, Daniele Conelli, G. Krishnamurthy Grandhi, Gian Paolo Suranna, Paola Vivo and Roberto Grisorio","doi":"10.1039/D4SE01356E","DOIUrl":"https://doi.org/10.1039/D4SE01356E","url":null,"abstract":"<p >The widespread adoption of perovskite-based solar technologies is strictly related to the cost reduction of the hole-transporting component in the device, while maintaining compatibility with its absorbing active layer. To date, several organic systems have been developed to compete with the pioneering 2,2′,7,7′-tetrakis(<em>N</em>,<em>N</em>-di-4-methoxyphenylamino)-9,9′-spirobifluorene (Spiro-OMeTAD) used as the benchmarking hole-transporting material (HTM). However, an easily accessible platform to construct economically competitive HTM scaffolds as alternatives to Spiro-OMeTAD is still lacking. In this study, we propose a straightforward route (excluding organometallic cross-coupling reactions) to prepare nonconventional HTMs (<strong>BTF</strong> and <strong>BTC</strong>) based on a bithiophene core decorated with unsymmetrical triarylamine groups. The two HTMs are implemented in dopant-free n-i-p perovskite solar cells (PSCs) to evaluate their performance and long-term behaviour. Despite enhancing hole extraction and transport at the perovskite/HTM interface compared to the Spiro-OMeTAD benchmark, <strong>BTC</strong> does not perform exceptionally as an undoped HTM in PSCs (PCE = 14.0% <em>vs.</em> 16.5% of the doped Spiro-OMeTAD reference). Moreover, the efficiencies of unencapsulated devices rapidly degraded over time (<em>T</em><small><sub>80</sub></small>: ∼57 days) due to weak HTM adhesion at the perovskite interface. Conversely, using <em>tert</em>-butylpyridine as the sole additive slightly increases performance (PCE = 14.8%) and remarkably improves device resilience to ambient exposure (PCE = 15.4% after 401 days), representing one of the longest shelf-stability experiments ever reported. Other dopant/additive formulations are unproductive in terms of both efficiencies and device resistance. These results indicate that focusing on the molecular design of low-cost HTMs and investigating the appropriate HTM/additive systems can be a promising strategy for developing efficient and stable PSCs.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 172-184"},"PeriodicalIF":5.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844644","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
Bulk passivation and suppressing non-radiative recombination loss in a 3D all-inorganic CsPbIBr2 perovskite solar cell via a 2D layered perovskite framework†
IF 5 3区 材料科学
Sustainable Energy & Fuels Pub Date : 2024-11-19 DOI: 10.1039/D4SE01437E
Tapas Das, Faisal Farooq, Parul Garg, Sakal Singla, Asim Guchhait and Ashok Bera
{"title":"Bulk passivation and suppressing non-radiative recombination loss in a 3D all-inorganic CsPbIBr2 perovskite solar cell via a 2D layered perovskite framework†","authors":"Tapas Das, Faisal Farooq, Parul Garg, Sakal Singla, Asim Guchhait and Ashok Bera","doi":"10.1039/D4SE01437E","DOIUrl":"https://doi.org/10.1039/D4SE01437E","url":null,"abstract":"<p >Improving perovskite film quality for reducing non-radiative recombination centers is one of the key aspects of designing efficient and stable perovskite solar cells (PSCs). In this work, we fabricated a high-performing and ambient stable CsPbIBr<small><sub>2</sub></small>-based PSC by incorporating a 2D perovskite framework within a 3D perovskite structure. An optimum amount of 2D doping can anchor the grain boundaries to improve the crystallinity and grain sizes and ultimately suppress non-radiative recombination centers within the perovskite. The solution-processed perovskite film with the structural formula ((PEA)<small><sub>2</sub></small>PbI<small><sub>4</sub></small>)<small><sub><em>X</em></sub></small>(CsPbIBr<small><sub>2</sub></small>)<small><sub>1−<em>X</em></sub></small> for <em>X</em> = 0.02 exhibited an improved average grain size of 853.38 ± 0.18 nm in comparison to 350.43 ± 0.09 nm of pristine CsPbIBr<small><sub>2</sub></small> thin films. The bulk passivation within the perovskite was supported by the X-ray diffraction, steady-state, and time-resolved photoluminescence results. We fabricated a PSC with the device structure FTO/c-TiO<small><sub>2</sub></small>/m-TiO<small><sub>2</sub></small>/(PEA)<small><sub>2</sub></small>PbI<small><sub>4</sub></small>)<small><sub><em>X</em></sub></small>(CsPbIBr<small><sub>2</sub></small>)<small><sub>1−<em>X</em></sub></small>/Spiro-OMeTAD/Ag, and achieved a power conversion efficiency (PCE) of 10.13% under ambient conditions with <em>X</em> = 0.02 and only 8.08% PCE for the pristine 3D perovskite (<em>X</em> = 0) device. The devices with 2D incorporation showed excellent ambient stability without any encapsulation and retained 80% of their initial PCE (T<small><sub>80</sub></small>) after 500 hours of ambient storage, whereas the device with pure 3D perovskite retained only 20% of its initial PCE after 400 hours of ambient storage. Simulation results, in combination with the experimental data, show that a reduced density of recombination centers resulted in much improved device performance.</p>","PeriodicalId":104,"journal":{"name":"Sustainable Energy & Fuels","volume":" 1","pages":" 269-279"},"PeriodicalIF":5.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844661","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
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