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Laser assisted phase transformation of carbon-based transition metal oxide electrode for high-performance supercapacitor application

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science China Chemistry 2025年

作者： Mingzhen Xiu Jianghong Zhang Yu Lu Xun Cao Kang Huang Siyu Zhu Bowei Zhang Yu Liang Chunwang Zhao Junsheng Wu Yizhong Huang School of Materials Science and Engineering Nanyang Technological University Energy Research Institute Interdisciplinary Graduate Programme Nanyang Technological University Institute of Sustainability for Chemicals Energy and Environment Agency for Science Technology and ResearchSingapore Institute of Advanced Materials and Technology University of Science and Technology Beijing School of Materials Science and Technology Shenyang University of Chemical Technology School of Materials Science and Hydrogen Energy Foshan University

Transitional metal oxides have a wide range of applications due to their superior *** enhanced performance of metal oxide relies on their desirable oxidation states,which is challenging to achieve and requires complex *** study demonstrates a facile strategy enabling rapid phase transformation of transition metal *** approach involves synthesis of a tetragonal Mn3O4/carbon cloth composite using the liquid plasma discharge deposition （LPDD） technique,followed by laser irradiation with the presence of ethylene glycol under an N2gas *** resulting face-centered cubic MnO/carbon cloth electrode exhibits an excellent capacitance of 1,125 F g-1at 2 A g-1,with remarkable capacitance retention of 95%after10,000 *** approach can be extended to other transition metals including Co,Cu,Cr,Fe,Ni,and *** simulations reveal the significance of ethylene glycol and the underlying mechanism associated with the phase transformation of transition metal *** present study offers a powerful technique for the phase transformation of transition metal oxide which can guide the development of new electrode materials with enhanced electrochemical properties for high-performance energy storage applications.

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Taste Classification by Data Fusion at a Single-Channel Hybrid Potentiometric and Impedimetric Electronic Tongue

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IEEE Transactions on Instrumentation and Measurement 2025年 74卷

作者： Yadav, Sarika Pala, Raj Ganesh Indian Institute of Technology Kanpur Materials Science Programme Kanpur208016 India Indian Institute of Technology Kanpur Materials Science Programme Department of Chemical Engineering Kanpur208016 India

The application of electronic tongues (E-tongues) in analyses relies on a series of measurements with expensive functionalized sensor arrays. In the current work, we establish a hybrid E-tongue (HET) by utilizing data fusion from potentiometry and impedimetry at a single channel composed of functionalization-free metal electrodes supported with pH electrodes. Potentiometric response encompasses pH and open circuit potential(OCP), whereas impedimetric response includes equivalent electric circuit parameters: charge transfer resistances and double-layer capacitances. Taste discriminability of the developed inexpensive and single-channel HET was validated for the combination of two metal electrodes, Pt and Ni, with two different sample preparations of fundamental taste analytes at a concentration around the threshold of the human tongue. Qualitative discrimination was reported by dimensionality reduction and clustering of analytes in principal component analysis (PCA) plots. The quality of clustering was benchmarked with silhouette coefficients (SCs) and hierarchical cluster analysis (HCA). A correlation among taste analytes and physicochemical parameters was established using heatmap plots and PCA loading plots to obtain insight into HET. Taste discriminability diminishes because of the buffer activity of the standard reference solution (aqueous KCl and tartaric acid) used for sample preparation. Pt and Ni electrodes show strong clustering of taste analytes with SC of 0.83 and 0.74, respectively, without any specific sample preparation. HET, by data fusion at the single channel, has improved accuracy and clustering compared to independent potentiometric and impedimetric measurements. Reported single-channel HET can potentially pave the path for commercial E-tongues. © 1963-2012 IEEE.

关键词： Electronic tongues

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Flash sintering of 3D-printed 3YSZ scaffolds for bone tissue engineering

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Ceramics International 2025年第13期51卷 17704-17717页

作者： Nunes, Fabio C. Lançoni, Patryck A. Gomes, Gustavo H.M. Santos, Karina F. Nagata, Ester Y. Campos, João V. Moraes, Izabel C.F. Daguano, Juliana K.M.B. Pallone, Eliria M.J.A. Postgraduate Programme in Materials Science and Engineering University of Sao Paulo USP/FZEA Pirassununga SP Brazil Department of Biosystems Engineering University of Sao Paulo USP/FZEA Pirassununga SP Brazil Institute of Pure and Applied Science Federal University of Itajubá Campus Itabira MG Brazil Center for Information Technology Renato Archer Campinas SP Brazil Department of Materials Engineering Federal University of Sao Carlos São Carlos SP Brazil Department of Food Engineering University of Sao Paulo USP/FZEA Pirassununga SP Brazil

Flash sintering is an innovative technique that employs an electric field to significantly accelerate the sintering process while reducing the furnace temperature needed for sintering, offering reduced processing times and energy consumption. This approach enables the rapid consolidation of ceramic materials within seconds, presenting new opportunities for advanced manufacturing. One promising yet not fully explored application is the densification of 3D-printed porous structures, such as scaffolds. In this study, we investigated, for the first time, the application of flash sintering to 3 mol% yttria-stabilized zirconia (3YSZ) scaffolds fabricated via material extrusion. The scaffolds were produced using an ink comprising 70 wt% ceramic particles, poly(ethylene glycol) as a binder, and Laponite nanoclay as a rheological agent. After debinding, flash sintering was performed using an electric field of 80 V cm−1 to consolidate the scaffolds. The rheological properties of the ink were characterized to ensure optimal printability, while the scaffold morphology was analyzed across various regions. The ink exhibited a shear-thinning behavior, ideal for material extrusion processes. Flash sintering resulted in rapid densification of the scaffolds at lower temperatures (1000 °C/60s) compared to conventional sintering methods (1500 °C/2h). Finite element analysis was employed to model the temperature evolution of the scaffolds during flash sintering. The final scaffolds demonstrated uniform grain size, interconnected porosity, and a robust porous network, emphasizing the potential of flash sintering for fabricating complex-shaped ceramics with tailored microstructures. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Ceramic materials

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Dynamic anaerobic digestion-based biorefineries for on-demand renewable energy and bioproducts in a circular bioeconomy

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Trends in Biotechnology 2025年第5期43卷 1140-1165页

作者： Shinde, Rajas Hackula, Anga Marycz, Milena Bose, Archishman O'Shea, Richard Barth, Susanne Murphy, Jerry D. Wall, David M. SFI MaREI Centre for Energy Climate and Marine Environmental Research Institute University College Cork Cork Ireland Civil Structural and Environmental Engineering School of Engineering and Architecture University College Cork Cork Ireland Crops Environment and Land Use Programme Crop Science Department Teagasc Oak Park Ireland Faculty of Electronics Telecommunications and Informatics and Advanced Materials Centre Gdansk University of Technology Gdańsk Poland Process and Chemical Engineering School of Engineering and Architecture University College Cork Cork Ireland

Anaerobic digestion (AD) is an important biotechnology for treating biodegradable residues and producing bioenergy, yet its full potential remains untapped. We investigate a two-phase AD system for biorefinery applications, producing valuable bioproducts, such as volatile fatty acids (VFAs) and biogas, from grass feedstock. We introduce a demand-driven operational approach to match market conditions, while minimising water use by reusing the process effluent. The proposed biorefinery model yields ~23 kg of VFAs and 75 kWh of biogas, with a potential gross revenue of €84 per tonne of grass. However, a preliminary economic analysis indicates that this biorefinery model is currently unprofitable. A sensitivity analysis suggests that reducing operating costs through technology advancements and policy support are vital to ensure economic viability. Such biorefineries offer opportunities for the diversification of farmers' incomes and the transition away from fossil resources. Our work exemplifies the role of AD as a key biotechnology in the circular bioeconomy. © 2025 The Author(s)

关键词： Sensitivity analysis

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The use of an oxidized carbon nanotube film to control Zn deposition and eliminate dendrite formation in a Zn ion battery

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新型炭材料(中英文) 2025年第1期40卷 154-166页

作者： LI Pin-xiang YI Zhe-han WANG Ye-xing HE Chang LIANG Ji HOU Feng Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Interdisciplinary Graduate Programme-Collaborative Initiative Graduate CollegeNanyang Technological UniversitySingapore 637371Singapore School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore Tianjin Key Laboratory of Low-dimensional Electronic Materials and Advanced Instrumentation Tianjin 300072China

Aqueous zinc ion batteries are regarded as one of the most promising candidates for large-scale energy stor-age due to their high safety,cost-effectiveness,and environ-mental ***,uncontrolled zinc dendrite growth and side reactions of the zinc anode decrease the sta-bility of Zn *** report the synthesis of an air-oxid-ized carbon nanotube(O-CNT)film by chemical vapor de-position followed by heat treatment in air which is used as a protective layer on the Zn foil to suppress zinc dendrite *** increase in the hydrophilicity of the O-CNT film caused by air oxidation facilitates zinc deposition between the film and the anode instead of deposition on the film *** porous structure of the O-CNT film homogenizes the Zn^(2+)ion flux and the electric field on the surface of the Zn foil,leading to the uniform deposition of *** a result,a O-CNT@Zn symmetric cell has a much better cycling stability with a life of more than 3000 h at 1 mA cm^(−2) with a capacity of 1 mAh cm^(−2),and values of more than 2000 h and 1 mAh cm^(−2) at 5 mA cm^(−2).In addition,a O-CNT@Zn||Mn^(2+)inserted hydrated vanadium pentoxide(MnVOH)full cell has a better rate per-formance than a Zn||MnVOH cell,achieving a high discharge capacity of 194 mAh g^(−1) at a high current density of 8 A g^(−1).In a long-term cycling test,the O-CNT@Zn||MnVOH full cell has a capacity retention of 58.8%after 2000 cycles at a current density of 5 A·g^(−1).

关键词： Carbon nanotubes Zn metal anodes Dendrite-free Hydrophilic Surface functionalization

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Adenosine Triphosphate in Solvothermal Method for Preparing High-Rate LiFePO4 Cathode Material

SSRN

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SSRN 2025年

作者： Song, Yu Chen, Qiulin Zhang, Hui Zhang, Shaoze Zhang, Keyu Hu, Junxian Li, Yin Yao, Yaochun The National Engineering Laboratory for Vacuum Metallurgy Kunming University of Science and Technology Kunming650093 China Engineering Laboratory for Advanced Battery and Materials of Yunnan Province Kunming University of Science and Technology Yunnan Province Kunming650093 China Postdoctoral Programme of Shandong Humon Smelting Co. Ltd. Shandong Province Yantai3264110 China Guizhou Normal University Guizhou Province Guizhou550025 China

LiFePO4 nanoparticles are synthesized utilizing adenosine triphosphate (ATP) as the phosphorus source via the solvothermal method. A comprehensive study is conducted to systematically investigate the effects of optimizing process parameters, including precursor concentration, reaction temperature, and reaction time, on the structural and morphological characteristics of LiFePO4. Specifically, at the initial concentration of 0.3 M and reaction at 180°C for 4 h, LiFePO4 exhibits a well-defined nanorod morphology and demonstrates superior electrochemical performance. Following,there are 154.27 mAh g−1 and 110.09 mAh g−1 discharge specific capacities for LiFePO4/C composites by carbon coating, at 1 C and 10 C, respectively. Notably, after 100 cycles at 10 C, the composite maintains a capacity of 99.8 mAh g−1, resulting in a capacity retention rate of 90.02%. In this work, a significant new insight into the synthesis of high-performance LiFePO4 using organophosphorus compounds are gained. © 2025, The Authors. All rights reserved.

关键词： Nanorods

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Ultrafast laser synthesis of zeolites

arXiv

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arXiv 2025年

作者： Galioglu, Sezin Hagverdiyev, Mehdi Doğan, Meryem M. Yavuz, Özgün Seleme Nizam, Ü. Makey, Ghaith Choura, Aladin Laçin, Mesut Kurç, Burcu Akata Elahi, Parviz Ömer Ilday, F. Ilday, Serim UNAM-National Nanotechnology Research Center Institute of Materials Science and Nanotechnology Bilkent University Ankara06800 Turkey Faculty of Electrical Engineering and Information Technology Ruhr University Bochum44801 Germany Faculty of Physics and Astronomy Ruhr University Bochum44801 Germany Micro and Nanotechnology Programme Middle East Technical University Ankara06800 Turkey Faculty of Engineering Özyeğin University İstanbul34794 Turkey

Research has demonstrated that zeolite nucleation and growth can be controlled by fine-tuning chemical composition, temperature, and pressure, resulting in structures with diverse porosities and functionalities. Nevertheless, current energy delivery methods lack the finesse required to operate on the femto- and picosecond timescales of silica polymerisation and depolymerisation, limiting their ability to direct synthesis with high precision. To overcome this limitation, we introduce an ultrafast laser synthesis technique capable of delivering energy at these timescales with unprecedented spatiotemporal precision. Unlike conventional or emerging approaches, this method bypasses the need for specific temperature and pressure settings, as nucleation and growth are governed by dynamic phenomena arising from nonlinear light-matter interactions—such as convective flows, cavitation bubbles, plasma formation, and shock waves. These processes can be initiated, paused, and resumed within fractions of a second, effectively "freezing" structures at any stage of self-assembly. Using this approach, we traced the entire nucleation and growth pathway of laser-synthesized TPA-silicate-1 zeolites, from early oligomer formation to fully developed crystals. The unprecedented spatiotemporal control of this technique unlocks new avenues for manipulating reaction pathways and exploring the vast configurational space of zeolites. © 2025, CC BY-NC-ND.

关键词： Self assembly

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Heteroatom dopant strategy triggered high-potential plateau to non-graphitized carbon with highly disordered microstructure for high-performance sodium ion storage

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Journal of Energy Chemistry 2023年第4期79卷 192-200页

作者： Peilin Zhang Chen Huang Mingzhen Xiu Siyu Zhu Weiwei Wang Bo Zhu Likang Qin Yizhong Huang Luyang Chen Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Energy Research Institute Interdisciplinary Graduate ProgrammeNanyang Technological UniversitySingapore

Non-graphitized carbon(NGC)has been extensively utilized as carbonaceous anode in sodium-ion batteries(SIBs).However,more optimization to achieve competitive capacity and stability is still challenging for *** the study,the dopant strategy is utilized to construct nitrogen/sulfur-doped non-graphitized carbon(N-NGC or S-NGC)shell decorated on three-dimensional graphene foam(GF)as a self-support *** highly disordered microstructures of heteroatom doped carbons are produced by applying a low-temperature pyrolysis treatment to precursors containing nitrogen and *** DFT calculations of Na-ion adsorption energies at diverse heteroatom sites show marginal-S,pyrrolic N and pyridinic N with more intensive Na-ion adsorption ability than middle-S,C=O and pristine *** N-NGC with dominant small graphitic regions delivers adsorption ability to Na-ion,while the S-NGC with significant single carbon lattice stripes demonstrates redox reaction with ***,in comparison with only adsorption-driven slope regions at high potential for N-NGC,the redox reaction-generated potentialplateau enables non-graphitized S-NGC superior discharge/charge capacity and cycle-stability in the slope *** work could provide deep insight into the rational design of non-graphitized carbon with rich microstructure and composition.

关键词： Non-graphitized carbon Highly disordered microstructure Heteroatom dopant Adsorption Redox reaction

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Bipolar plate materials for proton exchange membrane fuel cell application

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Recent Patents on materials science 2015年第1期8卷 15-45页

作者： Gautam, Rajeev K. Banerjee, Soma Kar, Kamal K. Advanced Nanoengineering Materials Laboratory Materials Science Programme Kanpur208016 India Department of Mechanical Engineering Indian Institute of Technology Kanpur Kanpur208016 India

Proton exchange membrane (PEM) fuel cell receives special attention as an alternative power device for various industrial applications because of its excellent energy conversion efficiency, high power density, low operating temperature, convenient fuel supply, longer life time and low emission. The prospective commercial applications of PEM fuel cell comprise laptop, computers, cellular phones, military back power packs, scooters, cars, etc. However, the high production cost and long term durability hinder the commercialization of PEM fuel cell. Bipolar plate is the essential constituent of PEM fuel cell, as it contributes to 80% of weight and 40% of total cost in a PEM fuel cell. Also, it facilitates many important functions;such as: supplies reactant gases at anode and cathode, connects individual cells electrically to form cell stack, and removes the unwanted products away from the cell. Hence, widespread commercialization of PEM fuel cell technology is highly dependent on the performance and cost of the bipolar plates. Primarily, bipolar plates are fabricated using graphite and metallic materials. But, weak mechanical properties of high density graphite and corrosive nature of metals makes these materials highly unsuitable to be used as bipolar plate in PEM fuel cell. However, new class of materials, such as: coated metals and carbon/polymer composites have received special attention due to their low fabrication cost, light weight and chemical stability. The bipolar plate materials must satisfy the target values set by the Department of Energy (DOE) of the United States. In this review, article several patents and research articles on various kinds of bipolar plate materials for PEM fuel cell application are discussed in detail. © 2015, Recent Patents on materials science. All Rights Reserved.

关键词： Chemical stability

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Photovoltaic Module Recycling Processes: A Review 3rd

Photovoltaic Module Recycling Processes: A Review

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3rd International Conference on Advances in materials Processing: Challenges and Opportunities, AMPCO 2022

作者： Trivedi, Harish Meshram, Arunabh Gupta, Rajeev Materials Science Programme IIT Kanpur Kanpur India Department of Materials Science & Engineering IIT Kanpur Kanpur India

ISBN: (纸本)9789819919703

Photovoltaic module (PVM) is a very popular energy device for green and renewable energy. Recycling of end of life (EoL) PVMs is becoming a necessity due to excessive e-waste generation. PVMs contain many precious and hazardous metals. Manufacturing of materials used in PVMs is highly energy intensive so effective recycling will increase the sustainability of the PVMs industry. There are many recycling processes available such as physical, chemical, thermal, and hybrid processes, however, optimization is required to handle huge e-waste which is expected by EoL PVMs in upcoming decades. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Silicon wafers

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