Journal of Materials Chemistry A最新文献

{"title":"Transition Metal-Phenanthroline Intercalated Montmorillonite as Efficient Electrocatalysts for the Oxygen Evolution Reaction","authors":"In Seon ‍Lee, Jae Ryeol Jeong, Cu Dang Van, Min Hyung Lee","doi":"10.1039/d5ta00244c","DOIUrl":"https://doi.org/10.1039/d5ta00244c","url":null,"abstract":"With the escalating climate crisis, the development of efficient, low-cost energy sources with minimal carbon footprints is more critical than ever. Among various green energy solutions, hydrogen production via water electrolysis has garnered significant attention due to the abundance of water and the cleanliness of hydrogen as a product. However, the widespread adoption of this technology is hindered by the sluggish kinetics of the oxygen evolution reaction (OER) at the anode, which compromises its economic viability compared to conventional hydrogen production methods. Addressing this challenge requires the development of highly efficient OER electrocatalysts to reduce overpotential and improve reaction kinetics. In this study, we present a novel strategy for synthesizing OER electrocatalysts by intercalating organo-metallic complexes of 1,10-phenanthroline (Phen) coordinated with Ni, Co, and Fe into the interlayers of montmorillonite (MMT) clay. Structural analyses using X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the successful insertion of the complexes, evidenced by an increase in the interlayer spacing of the MMT. Electrochemical performance evaluations revealed that MMT:Co(Phen)₂ exhibited the best OER activity, achieving an overpotential of 313 mV at a current density of 10 mA·cm⁻², along with excellent stability over 50 hours of operation.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"57 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing d-p Orbital Hybridization by Tuning High-Entropy Spinel Oxides for Enhanced Alkaline OER Efficiency","authors":"Dongyuan Song, Xueda Liu, Yingkai Wu, Quan Quan, Yuta Tsuji, Xiaoge Liu, Hikaru Saito, Shiro Ihara, Liyuan Dai, Xiaoguang Liang, Takeshi Yanagida, Johnny C Ho, SenPo Yip","doi":"10.1039/d4ta08485c","DOIUrl":"https://doi.org/10.1039/d4ta08485c","url":null,"abstract":"The growing need for cost-effective and efficient energy conversion technologies drives the development of advanced catalysts for the oxygen evolution reaction (OER). Our research focuses on high-entropy spinel oxides (HESOs) as efficient OER electrocatalysts. Using the molten salt synthesis method, we prepared HESO nanoparticles from Fe, Ni, Co, Mn, and Zn. By adjusting the precursor ratios, we obtained equimolar (Ni0.2Fe0.2Co0.2Mn0.2Zn0.2)3O4, CoMn-rich, and NiFe-rich samples to examine compositional effects. Among these, the CoMn-rich HESO sample exhibited superior catalytic performance in 1 M KOH solution, with an overpotential of 330.1 mV at 10 mA cm−2 and a Tafel slope of 53.5 mV dec−1. Its promising long-term stability and enhanced reaction kinetics are significant. Density functional theory (DFT) calculations and experimental results indicate that the increased Co3+ species and enhanced oxygen adsorption on the CoMn-rich HESO lower the energy barrier and accelerate electron transfer, improving the reaction kinetics. The Density of states (DOS) analysis further reveals the stronger covalency of metal active site 3d and O 2p on the surface of CoMn-rich favor the absorption of oxygen species and thus improve the electrochemical performance. This work presents an effective method for HESO synthesis and opens new avenues for energy conversion research.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"35 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Upcycling Pt/Pd and Graphite from City Mines for Highly Efficient Seawater Hydrogen Evolution Catalysis","authors":"Wenhan Cheng, Shuichang Liu, Qingsong Jiang, Songhe Yang, Yangzi Shangguan, Jian Hu, Jiaxin Liang, Shengyao Jin, Weixu Zhong, Xiangyang Lou, Hong Chen","doi":"10.1039/d5ta00055f","DOIUrl":"https://doi.org/10.1039/d5ta00055f","url":null,"abstract":"Seawater electrolysis offers a potential avenue for the unlimited production of green hydrogen. However, developing low-cost and highly stable electrocatalysts remains a critical challenge. Herein, we developed a waste materialization strategy to directly construct a novel Pt/Pd@SOG electrocatalyst from the recycled automobile catalyst and graphite anode. The as-fabricated catalyst exhibited superior performance in alkaline seawater electrolysis, delivering a low overpotential of 195 mV and 333 mV at current densities of 10 mA cm⁻² and 100 mA cm⁻² for hydrogen evolution reaction (HER), respectively, outperforming the commercial Pt/C (228 mV and 372 mV). The state-of-the-art high turnover frequency (TOF) of 43.745 s⁻¹ has been delivered. Additionally, the catalyst demonstrated exceptional stability at a current density of 100 mA cm⁻² for over 192 hours. A comprehensive characterization and mechanism study reveals that the graphene-based material provides a fast electron transport pathway and guarantees excellent electron conductivity to the catalytic active center, while the d-d orbital coupling between Pt and Pd within the as-synthesized Pt/Pd@SOG significantly lowers the energy barrier for electron transfer during catalytic reaction and stabilizes the intermediate's adsorption at the Pt sites, thus promoting the HER reaction. This research demonstrates a rapid valorization pathway for synergistic materializing multiple city mine wastes for advanced seawater electrocatalyst, which synergistically addresses the critical element cycling challenge and paves the way for sustainable energy catalysis.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"7 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From lab to fab: solution-processed top electrodes for commercializing perovskite solar cells","authors":"Yuqing Yue, Hongkai Zhang, Jie Fu, Changtan Qu, Yueyue Gao, Bin Wei, Yuchuan Shao, Yifan Zheng, Wei Shi","doi":"10.1039/d4ta08802f","DOIUrl":"https://doi.org/10.1039/d4ta08802f","url":null,"abstract":"Perovskite solar cell (PSCs), with their high efficiency and low-cost potential, have emerged as a promising alternative in the photovoltaic industry. The attainment of rapid output in large-scale PSC modules requires addressing several critical challenges, with the optimization of the top electrode being of utmost importance. This comprehensive review elucidates recent developments in solution-processed top electrodes for PSCs, analyzing the impact of various electrode materials, architectures, and fabrication techniques on device performance. Through a meticulous examination of the existing reports, effective strategies for enhancing the efficiency of PSCs are delineated, addressing both immediate market demands and broader applications in renewable energy. The insights derived from this review provide invaluable guidance for optimizing top electrodes, which may catalyze significant improvements in the efficiency and stability of PSCs, thereby accelerating their commercialization trajectory. The implications of this study are far-reaching, with the potential to transform the renewable energy landscape through advancements in PSC technology.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"18 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical abuse and safety in sodium-ion batteries","authors":"Bo Rui, Shuguo Sun, Xijun Tan, Chanmonirath (Michael) Chak, Lin Ma, Jun Xu","doi":"10.1039/d5ta00624d","DOIUrl":"https://doi.org/10.1039/d5ta00624d","url":null,"abstract":"Sodium-ion batteries (SIBs) are emerging as promising alternatives to lithium-ion batteries (LIBs) because of their low cost and abundant resources. However, their safety and reliability under mechanical abusive loading remain unclear, posing a barrier to further commercialization. In this study, we investigate the mechanical–electrochemical–thermal behavior and underlying mechanisms of SIBs through ball indentation tests. Meanwhile, we develop a multiphysics coupling computational framework—encompassing a 3D mechanical model, a 3D thermal model, an electrochemical model, and an internal short circuit (ISC) model—to gain deeper insights into the internal processes of SIBs. Using this framework, we comprehensively analyze the effects of ball size, battery aspect ratio, and ball loading position, and compare the safety of SIBs and LIBs. Experimental results show that, during ISC, the battery temperature gradually increases, reaching only about 35 °C due to the extremely rapid voltage drop and relatively lower capacity. Parametric studies reveal that using a larger steel ball or a smaller battery aspect ratio delays the ISC trigger and lowers the ISC temperature. Moreover, the computational model demonstrates that SIBs exhibit a slightly later ISC trigger and significantly lower ISC temperatures. Overall, this study lays a solid foundation for understanding SIB behavior and mechanisms under mechanical abuse and provides valuable guidance for designing safer next-generation sustainable batteries.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"52 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced oxygen electrode kinetics at low temperatures: an infiltrated Sr(Ti0.3Fe0.55Co0.15)O3-δ–La0.8Sr0.2Ga0.8Mg0.2O3-δ nanocomposite for solid oxide cells","authors":"Dong-Yeon Kim, Ju-Ho Shin, Hae-In Jeong, Beom-Kyeong Park","doi":"10.1039/d4ta09279a","DOIUrl":"https://doi.org/10.1039/d4ta09279a","url":null,"abstract":"Low-temperature (≤650 °C) solid oxide cells hold great potential for next-generation fuel cells and electrolyzers. Although Sr- and Mg-doped LaGaO<small>₃</small> (LSGM) is a promising electrolyte for this purpose, developing an electrode that meets all the performance, stability, and compatibility criteria remains challenging. Herein, we report a high-performance nanocomposite oxygen electrode fabricated by infiltrating a porous LSGM framework with the Sr(Ti<small>_0.3</small>Fe<small>_0.55</small>Co<small>_0.15</small>)O<small>_{3-<em>δ</em>}</small> (STFC) catalyst, noted for its excellent oxygen transport properties and surface stability. This novel STFC–LSGM electrode, composed of ∼80.1 vol% LSGM and ∼4.2 vol% STFC, exhibits an exceptionally low polarization resistance of ∼0.06 Ω cm<small>²</small> at 600 °C, with a degradation of ∼11.2% per 1000 h under open-circuit conditions. The mechanisms behind this remarkable performance and stability are investigated <em>via</em> impedance analysis using a microstructure-coupled transmission-line model. Integrated into a full cell with a thin LSGM electrolyte and a Sr<small>_0.8</small>La<small>_0.2</small>TiO<small>_{3-<em>δ</em>}</small> support, the optimized electrode delivers impressive performance, achieving a fuel cell power density of ∼1.54 W cm<small>⁻²</small> and a steam electrolysis current density at 1.3 V of ∼1.37 A cm<small>⁻²</small>, both at 600 °C. This work demonstrates a promising route for developing high-performance oxygen electrodes for LSGM-based SOC applications.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"1 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfur doping activated metal–support interaction drives Pt nanoparticles to achieve acid–base hydrogen evolution reaction","authors":"Yagang Li, Jiaqing Luo, Peilin Liu, Liangkun Zhang, Weiyu Song, Yuechang Wei, Zhen Zhao, Xiao Zhang, Jian Liu, Yuanqing Sun","doi":"10.1039/d4ta08499c","DOIUrl":"https://doi.org/10.1039/d4ta08499c","url":null,"abstract":"Adjusting the interfacial interaction between metal and support in loaded electrocatalysts is critical for enhancing the performance of electrocatalytic hydrogen evolution in both acidic and basic media, yet it continues to pose a significant challenge. This study proposes a sulfur doping strategy aimed at enhancing the strong metal–support interaction (SMSI) of ultra-small platinum (Pt) nanoparticles (NPs) uniformly encapsulated within nitrogen–sulfur co-doped carbon materials (NSC). This approach modulates the coordination environment and electronic structure of the Pt material, leading to substantial charge redistribution at the closely interfaced Pt–carbon layer heterojunction, thereby facilitating a rapid hydrogen evolution reaction (HER). The Pt/NSC exhibits excellent intrinsic activity at 1.0 M KOH (<em>η</em><small>₁₀</small> = 17.8 mV, 30.59 mV dec<small>⁻¹</small>) and 0.5 M H<small>₂</small>SO<small>₄</small> (<em>η</em><small>₁₀</small> = 10.2 mV, 18.85 mV dec<small>⁻¹</small>), demonstrating a lower overpotential and a reduced Tafel slope, significantly outperforming the commercial Pt/C catalyst. Furthermore, owing to the exceptional stability of NSC and the pronounced confinement effect at the interface, Pt/NSC exhibits robust resistance to both acid and alkaline corrosion. Experimental and theoretical investigations reveal that the strong interfacial coupling effect can facilitate spontaneous electron transfer from the support to the Pt NPs. The electron-rich Pt NPs significantly enhance the efficiency of charge transfer and optimize the chemisorption behavior of intermediates, thereby improving the kinetics of hydrogen production.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"88 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering stable p-type contacts towards efficient fully vacuum deposited perovskite solar cells","authors":"Arghanoon Moeini, Kassio Zanoni, Cristina Roldán Carmona, Henk J. Bolink","doi":"10.1039/d5ta00429b","DOIUrl":"https://doi.org/10.1039/d5ta00429b","url":null,"abstract":"Perovskite photovoltaics have recently achieved significant breakthroughs in cell efficiency, while offering simple and low-cost processability. Vacuum-based techniques are gaining increased attention due to their scalability and material versatility. However, fully vacuum-deposited devices remain rare, partly due to the limited availability of charge transport materials compatible with vacuum-deposition. Additionally, sublimed organic contact materials often require high work function interlayers, like MoO3, or molecular oxidants, which complicate device stability. In this study we explore the use of simpler non-extended conjugated self-assemble monolayers (SAMs) as alternatives to these high work function interlayers, demonstrating improved hole extraction, higher fill factors, and enhanced long-term stability compared to state-of-the art vacuum-deposited architectures. As a proof of concept, devices incorporating SAMs/TaTm (N4,N4,N4″,N4″-tetra([1,1′-biphenyl]-4-yl)-[1,1′:4′,1″-terphenyl]-4,4″-diamine) interfaces and methylammonium lead iodide perovskite (MAPbI3) achieve power conversion efficiencies exceeding 19.5 %, approaching the highest reported values for fully evaporated stacks, along with remarkable thermal stability at 85 ºC.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"10 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic enhancement of thermoelectric and mechanical properties in Bi-Sb-Te alloys collaborated by Zn based metal organic framework (ZIF-8)","authors":"Jianghu Yu, Chong-yu Wang, Hao Liang, Yangwei Wang, Ze-Yuan Yang, yi xin Zhang, Jing Feng, Zhen-Hua Ge","doi":"10.1039/d5ta01631b","DOIUrl":"https://doi.org/10.1039/d5ta01631b","url":null,"abstract":"Thermoelectric materials hold significant promise as they can directly convert thermal energy into electrical energy. Despite the discovery of numerous new thermoelectric materials in recent years, bismuth telluride(Bi2Te3)-based materials continue to be the most suitable for large-scale commercialization. Presently, there is scope for further improvement in the average ZT value and conversion efficiency of Bi2Te3-based materials. This study presents the successful synthesis of Bi0.42Sb1.58Te3(BST) alloys and ZIF-8 with high porosity and adjustable pore size using the solid-phase sintering method and spark plasma sintering(SPS). This method facilitates the doping of Bi sites and produces several atomic clusters in the BST matrix, significantly optimizing the electrical and thermal transport properties of BST thermoelectric materials. The Bi sites undergo low-valent cation doping, and additional hole carriers are introduced to optimize the electrical conductivity. Moreover, a large number of atomic clusters in the BST matrix act as effective phonon scattering centers, enhancing phonon scattering and reducing lattice thermal conductivity. Additionally, ZńBi,Sb defects are observed as defect clusters around the nanopores, which further reduce the lattice thermal conductivity. Notably, the ZT of Bi0.42Sb1.58Te3/0.3 wt% ZIF-8 sample reaches 1.42 at 348 K, and the average ZT is as high as 1.16 in the temperature range of 300–500 K due to the synergistic optimization of thermal and electrical transport properties. Furthermore, the thermoelectric conversion efficiency of the single-leg device reaches 5.03% at ΔT=250 K, and the mechanical properties of the sample are significantly improved. Due to the fine grain strengthening effect, the hardness of the 0.3 wt% doped sample is 1.2 GPa, and its Young's modulus is 43 GPa, exhibiting significant improvement compared to the pure sample. The findings of this study are expected to provide valuable insights for the optimization of other thermoelectric materials.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"8 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strategically Designed Catalysts for Ammonia Synthesis Under Mild Conditions: Recent Advances and Challenges","authors":"Sai Sundara Sandeep Ganti, Pintu Kumar Roy, Nayonay Wagh, Kona Naga Surya Siva Sai, Sushant Kumar","doi":"10.1039/d4ta08232j","DOIUrl":"https://doi.org/10.1039/d4ta08232j","url":null,"abstract":"The role of ammonia would continue to be significant in the changing energy landscape with focus on mitigating carbon footprints per unit of ammonia production. Since ammonia is a zero-carbon molecule and increasingly considered as an important hydrogen energy carrier for future energy systems, its generation under mild conditions and subsequent industrial acceptance becomes critical. Therefore, the recent challenges are to design and engineer alternative but greener methods that can generate ammonia at low input energy that will facilitate inexpensive, localized, and renewable-coupled ammonia generation. This review underscores the recent development in design strategies of novel catalysts, specially emphasizing recent advances in different class of thermal, electrochemical, and non-thermal plasmacatalysis that can generate ammonia under mild conditions. Hence, this article can serve as a comprehensive work for engineering novel catalysts and methods which can contribute to generation of sustainable and cost-efficient solutions for expanding landscape of ammonia applications.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"9 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143672508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}