ChemSusChem最新文献_第5页

Palladium Nanocluster Modification of Mesoporous Copper Oxide Shifts Its Selectivity to C₂₊ Products in CO₂ Electrochemical Reduction. 介孔氧化铜的钯纳米团簇改性改变了CO2电化学还原中对C2+产物的选择性。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-22 DOI: 10.1002/cssc.202501482

Thi Hong Trang Nguyen, Jing Shen, Chandani Singh, Dimitra Papamichail, Vana Chinnappa Chinnabathini, Alessia Bardazzi, Deepak Pant, Didier Grandjean, Ewald Janssens

{"title":"Palladium Nanocluster Modification of Mesoporous Copper Oxide Shifts Its Selectivity to C2+ Products in CO2 Electrochemical Reduction.","authors":"Thi Hong Trang Nguyen, Jing Shen, Chandani Singh, Dimitra Papamichail, Vana Chinnappa Chinnabathini, Alessia Bardazzi, Deepak Pant, Didier Grandjean, Ewald Janssens","doi":"10.1002/cssc.202501482","DOIUrl":"https://doi.org/10.1002/cssc.202501482","url":null,"abstract":"Novel electrodes composed of mesoporous copper oxide inverse opals (mCuxO), surface-modified with controlled amounts of well-defined Pd nanoclusters, have been evaluated for their selective electroreduction of CO2 to C2+ products. While mCuxO synthesized via colloidal templating produces mostly C1 products, the introduction of one or two atomic monolayer equivalents of Pd nanoclusters via cluster beam deposition induces a pronounced selectivity shift toward ethylene and ethanol. Following Pd deposition, the C2+ faradaic efficiency of Pd-modified mCuxO increases nearly sixfold compared to bare mCuxO at a current density of 100 mA cm-2. A combination of ex situ X-ray diffraction, X-ray Photoelectron Spectroscopy, Extended X-ray absorption fine structure, High-energy-resolution fluorescence-detected X-ray absorption near edge structure, and in situ Raman spectroscopy reveals that at these low Pd loadings, the nanoclusters promote the complete reduction at -0.7 VRHE (versus the reversible hydrogen electrode) of mCuxO into small Cu metal crystallites that are likely important for the significant C2+ selectivity enhancement. In situ Raman indicates that once the mCuxO is reduced, a small amount of Pd nanoclusters promotes the increase in surface-bound *CO and *CHx specieson. In contrast, higher Pd nanocluster loadings only yield a partial reduction of mCuxO, even at -1.0 VRHE, accompanied by a decrease in C2+ selectivity.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501482"},"PeriodicalIF":6.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Radical-Based, Transition Metal-Free Approach for Diaryl Ketone Synthesis. 基于自由基、无过渡金属的二芳基酮合成方法。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-22 DOI: 10.1002/cssc.202501478

Dongjie Wang, Jordan Garo, Yinpeng Wang, Jean-Marc Sotiropoulos, Marc Taillefer

{"title":"A Radical-Based, Transition Metal-Free Approach for Diaryl Ketone Synthesis.","authors":"Dongjie Wang, Jordan Garo, Yinpeng Wang, Jean-Marc Sotiropoulos, Marc Taillefer","doi":"10.1002/cssc.202501478","DOIUrl":"https://doi.org/10.1002/cssc.202501478","url":null,"abstract":"Diaryl ketones represent a pivotal class of compounds, widely used in pharmaceuticals, agrochemicals, and materials science. Driven by the urgent need for safer and more sustainable synthetic methodologies, developing innovative approaches in this area has become a critical priority for both academia and industry. In this context, a straightforward yet novel one-pot strategy for synthesizing a broad array of diaryl ketones, including valuable target molecules, is presented. This approach diverges from conventional methods by employing a radical process, in which aryl halides react with benzonitriles in a basic medium, relying exclusively on the organic reductant pair KOtBu/DMA and air as the oxidant. Mechanistic studies suggest that the KOtBu/DMA system triggers the generation of aryl radicals, thereby initiating the process. This method stands out by overcoming key limitations of conventional approaches, notably avoiding corrosive reagents, toxic or expensive catalysts, peroxides, and hazardous carbon monoxide, thus aligning with the shift toward safer, more sustainable alternative synthetic strategies.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501478"},"PeriodicalIF":6.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluoride-Induced Corrosion of Stainless Steel: A Case Study for its Application as Proton Exchange Membrane Water Electrolysis Bipolar Plate Material. 氟化物对不锈钢的腐蚀：以其作为质子交换膜水电解双极板材料为例

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-22 DOI: 10.1002/cssc.202501561

Lena Fiedler, Darius Hoffmeister, Tien-Ching Ma, Julian Schwarz, Ferdinand Günther, Thomas Przybilla, Erdmann Spiecker, Simon Thiele, Dominik Dworschak, Karl J J Mayrhofer, Andreas Hutzler

{"title":"Fluoride-Induced Corrosion of Stainless Steel: A Case Study for its Application as Proton Exchange Membrane Water Electrolysis Bipolar Plate Material.","authors":"Lena Fiedler, Darius Hoffmeister, Tien-Ching Ma, Julian Schwarz, Ferdinand Günther, Thomas Przybilla, Erdmann Spiecker, Simon Thiele, Dominik Dworschak, Karl J J Mayrhofer, Andreas Hutzler","doi":"10.1002/cssc.202501561","DOIUrl":"https://doi.org/10.1002/cssc.202501561","url":null,"abstract":"Stainless steel is a promising material for bipolar plates (BPP) in proton exchange membrane water electrolysis (PEMWE) that could drastically reduce stack costs. However, dissolution of Fe from stainless steel BPP might trigger membrane degradation, which releases fluoride. Fluoride in turn could accelerate stainless steel corrosion. Therefore, the influence of fluoride contamination (namely 0, 1, 5, and 20 ppm in 0.5 mM H2SO4) on the dissolution stability of stainless steel (316L) is investigated utilizing a scanning flow cell coupled on-line to an inductively coupled plasma mass spectrometer (SFC-ICP-MS). Fluoride enhances the dissolution exponentially, resulting in enhanced dissolution efficiencies with increased fluoride concentration reaching ≈50% at 20 ppm. Complementary micro and nanostructure analysis (laser profilometry, scanning electron microscopy, and scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy) reveals pitting corrosion, whose severity and occurrence appear highly increased with higher fluoride concentration. The results suggest that fluoride impurities in combination with exposed stainless steel, e.g., due to coating imperfections, should be avoided in PEMWE application, as accumulation of impurities of both might lead to a self-accelerating degradation process.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501561"},"PeriodicalIF":6.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observations on Spatial Specificity in the Modification of Porous Graphene Layers. 多孔石墨烯层修饰的空间特异性观察。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-19 DOI: 10.1002/cssc.202501031

Abhijna Das, Marcus Waser, Kyoungjun Choi, Theodor Bühler, Christelle Jablonski, Aaron H Oechsle, Junggou Kwon, Murray Height, Thomas A Jung, Renzo A Raso

{"title":"Observations on Spatial Specificity in the Modification of Porous Graphene Layers.","authors":"Abhijna Das, Marcus Waser, Kyoungjun Choi, Theodor Bühler, Christelle Jablonski, Aaron H Oechsle, Junggou Kwon, Murray Height, Thomas A Jung, Renzo A Raso","doi":"10.1002/cssc.202501031","DOIUrl":"https://doi.org/10.1002/cssc.202501031","url":null,"abstract":"Self-initiated photografting and photopolymerization (SIPGP) is a simple one-step polymerization process that can yield dense polymer layers on various surfaces, including pristine graphene. This process, however, has so far not been managed to be site selective. Herein, SIPGP is used to selectively functionalize the edges of pores in chemical vapor-deposited porous graphene sheets. The pore edges formed during the graphene fabrication serve as directing reactive sites for the functionalization process. By polymerizing styrene monomers from the pore edges using a radical-mediated process, polymer chains are preferentially grafted along and from the pore edges of the graphene. The spatial selectivity of the process is unambiguously demonstrated by the presence of a polymer rim around the pores in the atomic force microscopy data. The height of these polymer rims and the pore dimensions are measured, demonstrating the tunability of these characteristics by changing the reaction conditions (varying polymerization time from 0 to 24 h). The precise selectivity and controllability of the SIPGP process for the pore edges are potentially interesting for using porous graphene as functional membranes in different technological applications such as Per- and Polyfluoroalkyl substances (PFAs) -free waterproof membrane or state-of-the-art membranes for water desalination.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501031"},"PeriodicalIF":6.6,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145084489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Post-Treatment Strategy for High-Capacity Naphtalenediimide (NDI) Polymer Cathodes in Li-Ion Batteries. 锂离子电池高容量NDI聚合物负极后处理策略

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-19 DOI: 10.1002/cssc.202501246

Minhee Lee, Soyoung Kim, Chanho Yuk, Gyeongdoo Kang, Euimin Lee, Han-Hee Cho, Sung Yun Son, Woochul Song, Taesu Kim, Wonho Lee

{"title":"Post-Treatment Strategy for High-Capacity Naphtalenediimide (NDI) Polymer Cathodes in Li-Ion Batteries.","authors":"Minhee Lee, Soyoung Kim, Chanho Yuk, Gyeongdoo Kang, Euimin Lee, Han-Hee Cho, Sung Yun Son, Woochul Song, Taesu Kim, Wonho Lee","doi":"10.1002/cssc.202501246","DOIUrl":"https://doi.org/10.1002/cssc.202501246","url":null,"abstract":"Conjugated polymer cathodes are promising candidates for next-generation Li-ion batteries, but their practical application is limited by the presence of inactive alkyl side chains that reduce specific capacity. A simple heat-treatment strategy is reported to selectively remove the alkyl side chains of a naphthalenediimide (NDI)-based polymer, P(NDI2OD-T2), an n-type conjugated polymer, resulting in a nearly twofold increase in specific capacity, from 56.3 mAh g-1 (fresh) to 117.0 mAh g-1 (heat-treated). Thermogravimetric analysis and gas chromatography-mass spectrometry confirmed the selective cleavage of alkyl groups at 420 °C without significant degradation of the polymer backbone. The resulting porous architecture, verified by Brunauer-Emmett-Teller and scanning electron microscopy analyses, promoted ion diffusion and enhanced the capacitive contribution to charge storage. Electrochemical measurements revealed that the heat-treated cathode exhibited excellent performance at sub-zero temperatures, attributed to improved ion transport and surface-driven storage mechanisms. In contrast, the fresh electrode retained higher electronic conductivity and superior rate capability at room temperature, due to its preserved crystallinity. These findings provide mechanistic insight into how post-processing can modulate the structure-property relationship of conjugated polymer cathodes and offer a versatile and practical approach toward improving specific capacity in organic electrode materials.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501246"},"PeriodicalIF":6.6,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145084525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

⁷Li NMR Chemical Shifts in Battery-Relevant Electrolytes: Ligand-Induced Shifts Cancel in Both Experiment and Calculation. 锂核磁共振在电池相关电解质中的化学位移：配体诱导的位移在实验和计算中都可以抵消。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-19 DOI: 10.1002/cssc.202500798

Daniel Sethio, Philippe Bopp, Kersti Hermansson

{"title":"7Li NMR Chemical Shifts in Battery-Relevant Electrolytes: Ligand-Induced Shifts Cancel in Both Experiment and Calculation.","authors":"Daniel Sethio, Philippe Bopp, Kersti Hermansson","doi":"10.1002/cssc.202500798","DOIUrl":"https://doi.org/10.1002/cssc.202500798","url":null,"abstract":"7Li nuclear magnetic resonance (NMR) experiments in the literature have shown that lowering the concentration from 1 M to 0.1 M of LiPF6 salt dissolved in a 50:50 mixture of ethylene carbonate (EC) and dimethyl carbonate (DMC) has only a minor effect on the Li chemical shift (≈0.1 ppm). This is unexpected as the number of Li+-PF6 - contact ion pairs is expected to be large in the 1 M solution but small in the more dilute solution. The aim of this study is to explore how the chemical shifts for the two solutions can differ so little despite the fact that the ion pair concentration differs markedly between the two solutions. To resolve this apparent paradox, molecular dynamics (MD) simulation results from the literature are combined with density functional theory-based chemical shift calculations. The calculated chemical shifts are in good agreement with the experimental values for both the 1 M and 0.1 M solutions, and so is the small chemical shift difference between them, which can be rationalized in terms of a cancellation of many contributions of opposite signs to the 7Li chemical shifts. The workflow considers effects of both short-time and long-time dynamical averaging.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e2500798"},"PeriodicalIF":6.6,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Promoting Energy Storage Kinetics of Tellurium/Vanadium Selenide Hybrid via Synergistic Intercalation-Conversion Reactions for Aqueous Zinc-Ion Batteries. 通过协同插层-转化反应促进碲/硒化钒杂化物在锌离子电池中的储能动力学。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-19 DOI: 10.1002/cssc.202501067

Wei Lv, Xudong Cu, Jie Cheng, Beibei Wang, Jintao Bai, Gaohong Zhai, Gang Wang

{"title":"Promoting Energy Storage Kinetics of Tellurium/Vanadium Selenide Hybrid via Synergistic Intercalation-Conversion Reactions for Aqueous Zinc-Ion Batteries.","authors":"Wei Lv, Xudong Cu, Jie Cheng, Beibei Wang, Jintao Bai, Gaohong Zhai, Gang Wang","doi":"10.1002/cssc.202501067","DOIUrl":"https://doi.org/10.1002/cssc.202501067","url":null,"abstract":"Because suitable cathode materials are scarce, the advancement of aqueous zinc-ion batteries (AZIBs) has been seriously hindered. Although intercalation-type compounds offer good cycling stability, they have relatively low specific capacities. On the contrary, conversion-type cathodes can provide higher capacity but often have poor cycle reversibility and stability. Herein, a facile solvothermal approach is employed to prepare the Te/VSe2 hybrid material with Te particles distributed homogeneously on the surface of VSe2 plates. The addition of Te to VSe2 not only boosts significantly the conductivity of the hybrid cathode, promotes fast ion diffusion and electron transport, but also su pplies extra specific capacity. In addition, the introduction of Te can effectively inhibit the dissolution of vanadium ions, thereby promoting the activity of VSe2 and improving the utilization of VSe2. Thus, the synergistic effect of the intercalation and conversion mechanisms endows the Te/VSe2 hybrid with excellent reversible capacity of 162 mA h g-1 under a current density of 0.1 A g-1 and a durable cycling ability (85% capacity retention after 1000 cycles at 0.8 A g-1). This work demonstrates the feasibility of the strategy by integrating intercalation- and conversion-type materials to develop outstanding cathode for AZIBs.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501067"},"PeriodicalIF":6.6,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145084560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methanol-Induced Surface Homogenization of ZnO for High-Performance Inverted Organic Solar Cells. 甲醇诱导ZnO表面均匀化用于高性能倒置有机太阳能电池。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-19 DOI: 10.1002/cssc.202501810

Fenghua Zhang, Tingting Dai, Yang Liu, Yang Zhang, Xiaojuan Dai, Denghui Xu, Ye Zou, Xiong Li

{"title":"Methanol-Induced Surface Homogenization of ZnO for High-Performance Inverted Organic Solar Cells.","authors":"Fenghua Zhang, Tingting Dai, Yang Liu, Yang Zhang, Xiaojuan Dai, Denghui Xu, Ye Zou, Xiong Li","doi":"10.1002/cssc.202501810","DOIUrl":"https://doi.org/10.1002/cssc.202501810","url":null,"abstract":"The performance and stability of inverted organic solar cells (OSCs) are often limited by the inherent defects and photocatalytic activity of zinc oxide (ZnO) electron transport layers. A methanol-induced surface homogenization (MISH) strategy is proposed to simultaneously address these challenges. Through coordination and hydrogen bonding, methanol effectively passivates surface defects while suppressing the generation of hydroxyl radicals (-OH) under operational conditions. This dual-functional modification optimizes ZnO work function, enhances interfacial charge transport, and promotes a favorable vertical phase separation within the active layer. The optimized morphology effectively suppresses interfacial recombination while enhancing charge collection efficiency, leading to significant improvement in device performance. The inverted PM6:L8-BO-based OSCs achieve apower conversion efficiency (PCE) of 18.63% with exceptional thermal stability (T80 > 1000 h). Furthermore, the universality of the MISH strategy is demonstrated in PM6:L8-BO:BTP-eC9 ternary systems, yielding an impressive PCE of 18.85%. Comprehensive characterization, including atomic force microscopy, grazing-incidence wide-angle X-ray scattering, reveals that methanol treatment not only reduces trap states but also stabilizes molecular stacking during long-term operation. This work provides a simple and effective approach for ZnO modification, offering profound insights into interfacial engineering for high-performance and stable OSCs.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501810"},"PeriodicalIF":6.6,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145090745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective Oxygen Doping of Li_6.6Si_0.6Sb_0.4S₅I Electrolyte for Enhanced Air Stability and Electrochemical Performance. 选择性氧掺杂Li6.6Si0.6Sb0.4S5I电解液提高空气稳定性和电化学性能

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-18 DOI: 10.1002/cssc.202501611

Qiyue Luo, Siwu Li, Lin Li, Ziling Jiang, Ziyu Lu, Miao Deng, Jie Yang, Long Chen, Chen Liu, Chuang Yu

{"title":"Selective Oxygen Doping of Li6.6Si0.6Sb0.4S5I Electrolyte for Enhanced Air Stability and Electrochemical Performance.","authors":"Qiyue Luo, Siwu Li, Lin Li, Ziling Jiang, Ziyu Lu, Miao Deng, Jie Yang, Long Chen, Chen Liu, Chuang Yu","doi":"10.1002/cssc.202501611","DOIUrl":"https://doi.org/10.1002/cssc.202501611","url":null,"abstract":"The argyrodite electrolyte Li6.6Si0.6Sb0.4S5I has garnered significant interest due to its high ionic conductivity of 9.0 mS cm-1. However, its integration into composite cathodes is hindered by poor chemical and electrochemical stability, limiting its practical application. This study investigates an O doping strategy to enhance the overall performance of Li6.6Si0.6Sb0.4S5I. In contrast to previous studies, a comparative analysis of two different oxygen sources Li2O and Sb2O5 is conducted. The results demonstrate that the electrochemical stability of the material obviously improves when Li2O is used as the O source, while its air stability significantly enhances when Sb2O5 is used. Furthermore, Li6.6Si0.6Sb0.4S5I (and Li6.6Si0.6Sb0.4S4.9IO0.1-Li2O) is combined with Li3InCl6 (and Li3.25InCl5.75O0.25) to fabricate different separator configurations. Through aging tests, the optimal separator configuration, Li3.25InCl5.75O0.25/Li6.6Si0.6Sb0.4S4.9IO0.1-Li2O, is found. Batteries assembled with this separator exhibit stable performance over 800 cycles at an upper cutoff voltage of 3.9 V (vs. Li-In), while maintaining an excellent capacity retention rate of 80.2%.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501611"},"PeriodicalIF":6.6,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145079242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Annealing-Driven Morphological Evolution of MoS₂@α-MoO₃ Heterostructures Toward Enhanced Catalysis and Na-Ion Supercapatteries. 退火驱动的MoS2@α-MoO3异质结构向增强催化和na离子超级电容器的形态演变。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-09-18 DOI: 10.1002/cssc.202500840

Fatemeh Ghamari, Jalal Arjomandi, Mohammad Ali Kiani, Yawei Li

{"title":"Annealing-Driven Morphological Evolution of MoS2@α-MoO3 Heterostructures Toward Enhanced Catalysis and Na-Ion Supercapatteries.","authors":"Fatemeh Ghamari, Jalal Arjomandi, Mohammad Ali Kiani, Yawei Li","doi":"10.1002/cssc.202500840","DOIUrl":"https://doi.org/10.1002/cssc.202500840","url":null,"abstract":"This study offers a cost-effective and high-yield electrochemical route for synthesizing molybdenum nanocomposites for energy storage and conversion. MoS2@α-MoO3 heterostructure nanomaterials are synthesized using an affordable electrosynthesis method on graphite substrate, followed by a simple annealing process at different temperatures. Then, graphite/MoS2-amorphous electrodes are annealed at 30 °C, 40 °C, and 50 °C. Following physicochemical characterizations, statistical and morphological analyses, including monofractal and multifractal formalisms are conducted. Findings indicate increasing annealing temperature enhances surface roughness and irregularity with well-developed surface morphology. In a redox-additive electrolyte (1.0 M Na2SO4 + 1.0 M NaI), G/MoS2@α-MoO3-500||G/rGO Na-ion asymmetric supercapattery and G/MoS2@α-MoO3-500||G/MoS2@α-MoO3-500 Na-ion symmetric supercapattery are fabricated. The G/MoS2@α-MoO3-500||G/rGO supplies a specific capacity of 191.79 mAh g-1, 45.01 Wh kg-1 energy density, and 234.72 W kg-1 power density at 1 A g-1 with 95.4% retention after 10 000 cycles with a broad potential window of 1.30 V. The G/MoS2@α-MoO3-500||G/MoS2@α-MoO3-500 demonstrates CS of 207.13 mAh g-1, Es of 48.62 Wh kg-1, and Ps of 234.72 W kg-1 at 1 A g-1 with 96.4% retention after 10 000 cycles. Tailoring developed morphologies at G/MoS2@α-MoO3-500 electrode yields catalytically active sites for excellent electrocatalytic activities toward hydrogen evolution reaction (ηj = 10 = 44 mV and Tafel slope of 81 mV dec-1) in acidic solution.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202500840"},"PeriodicalIF":6.6,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145079244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0