Materials Today Sustainability最新文献

{"title":"Strain-engineered Pt-Ni(OH)2 catalyst via a nickel boride intermediated method for high-current-density hydrogen evolution reaction","authors":"Cengceng Du ,&nbsp;Yasen Li ,&nbsp;Zhenyu Wang ,&nbsp;Lei Shi ,&nbsp;Xin Chen ,&nbsp;Chen Chen ,&nbsp;Mingjie Jia ,&nbsp;Die Shao ,&nbsp;Liping Xie ,&nbsp;Yongjian Ai ,&nbsp;Hongbin Sun ,&nbsp;Guangwen Xu","doi":"10.1016/j.mtsust.2025.101146","DOIUrl":"10.1016/j.mtsust.2025.101146","url":null,"abstract":"<div><div>Efficient hydrogen generation via electrochemical splitting of water at elevated current densities is paramount for its market implementation. Yet, cathodic hydrogen generation, in practical applications, encounters issues such as polarization, which result in energy consumption and sluggishness, thereby limiting its further utilization. In light of this, we have proposed a method for preparing a self-supported Pt-Ni(OH)₂ catalyst-(Pt-Ni(OH)₂/NF). Specifically, by employing NaBH₄ pretreatment on nickel species to form NiB and Ni₂B an intermediate, a significant improvement in catalytic performance has been achieved, especially at high current density. The replacement reaction of nickel boride with H₂PtCl₆ generates rigid strain, leading to the Ni(OH)₂ lattice shrinkage. Upon testing, this catalyst requires only a minimal overpotential of 3 mV to achieve a current density of 10 mA cm⁻², and it achieved an industrial current of 500 mA cm⁻² with only 94 mV overpotential. Moreover, even after a 7-day longevity test at 200 mA cm⁻², it still maintained excellent performance.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101146"},"PeriodicalIF":7.1,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168793","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}

{"title":"A review on catalytic copolymerization of carbon dioxide and epoxides","authors":"Yiheng Wu ,&nbsp;Yitong Jiang ,&nbsp;Hongyin Yin ,&nbsp;Xinyue Chen ,&nbsp;Nianzhong Wang ,&nbsp;Zichun Wang","doi":"10.1016/j.mtsust.2025.101148","DOIUrl":"10.1016/j.mtsust.2025.101148","url":null,"abstract":"<div><div>The catalytic copolymerization of carbon dioxide (CO₂) and epoxides represents a paradigmatic strategy for carbon valorization, simultaneously addressing the imperative of greenhouse gas mitigation and the sustainable production of advanced polymeric materials. As an inherently atom-economical and energy-efficient transformation, this process affords aliphatic polycarbonates (PCs) with tunable architectures and high CO₂ incorporation, offering significant environmental and industrial benefits. However, the intrinsic thermodynamic stability of CO₂, alongside the kinetic inertness of epoxides, necessitates the development of highly active, selective, and robust catalytic systems capable of suppressing side reactions such as cyclic carbonate and polyether formation. This review critically examines the evolution of heterogeneous and homogeneous catalytic platforms, including well-defined metal complexes, multinuclear architectures, and emerging organocatalytic systems, unpacking the intricate interplay between electronic effects, steric modulation, and cooperative mechanisms in catalyst design. Furthermore, this review elucidates current limitations in catalyst stability, process scalability, and impurity tolerance, proposing forward-looking strategies such as dynamic ligand frameworks, heterobimetallic pairing, and macromolecular catalyst architectures to overcome these bottlenecks. By integrating mechanistic insights, material performance considerations, and sustainable process engineering principles, this contribution aims to the rational design for next-generation catalytic systems in CO₂-based polymer chemistry.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101148"},"PeriodicalIF":7.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168791","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}

{"title":"Localized graphitization on transition-metal-chalcogenide-decorated carbon nanotubes for electrocatalytic OER","authors":"Thibault De Villenoisy ,&nbsp;Yue Jiang ,&nbsp;Xiaoran Zheng ,&nbsp;Yihao Shan ,&nbsp;Calvin Hoang ,&nbsp;Vienna Wong ,&nbsp;Leigh Sheppard ,&nbsp;Pramod Koshy ,&nbsp;Charles C. Sorrell ,&nbsp;Sajjad S. Mofarah","doi":"10.1016/j.mtsust.2025.101145","DOIUrl":"10.1016/j.mtsust.2025.101145","url":null,"abstract":"<div><div>For successful commercialization of technologies for the sustainable production of green hydrogen, nickel (Ni)- and iron (Fe)-based materials are the most promising cheap and effective noble metal-free catalysts for alkaline OER catalysis. A fabrication strategy was adopted based on a cost-effective and high-yield synthesis of Ni-, Fe-, and Mo-doped ZIF-8 (Zn), <em>e.g.</em> NiFeMo-ZIF-8, as the precursor, in an aqueous solution at room temperature. Subsequently, the precursor was subjected to pyrolysis for carbonization in an inert atmosphere (800 °C), <em>e.g.</em> NiFeMo–C, before secondary thermal treatment in sulfur (S) and phosphorus (P)-rich atmospheres to produce highly thermodynamically-active and low concentration transition metal chalcogenide (TMC) nanoparticles in conductive and porous nitrogen (N)-doped multiwalled-carbon-nanotubes (N-MWCNTs), <em>e.g.</em> NiFeMo-C-PS. The results revealed that the wrapping of the metal derivatives (MDs) by the MWCNTs (∼10 nm diameter) resulted in considerably rapid electron transfer via the highly conductive MWCNTs, leading to accelerated OER performance through (1) minimal diffusion pathways which enabled efficient charge transfer and (2) the increased accessibility of metal derivatives, which formed varying active sites depending on the thermal atmosphere and conversion in the OER electrolyte at the operating voltage. The catalytic surface area was determined to be primarily NiFeOOH supported by Mo and S dopants with co-catalysis from phosphate ions. The best performing catalyst was Ni,Fe,Mo-doped ZIF-8 that was pyrolyzed and then heat treated in a P- and S-rich atmosphere to produce NiFeMo-C-PS; this showed a Tafel slope of 52 mV dec⁻¹ and overpotential of 437 mV at 1 A cm⁻².</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101145"},"PeriodicalIF":7.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166992","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}

{"title":"Impact of NH3 combustion on the properties of carbonate-free Na/Ca silicate-based soda-lime silicate glass","authors":"Hashira Yamamoto ,&nbsp;Noriaki Nakatsuka ,&nbsp;Shiori Hori ,&nbsp;Kenta Kikuchi ,&nbsp;Tomohiro Matsunami ,&nbsp;Koji Suzuki ,&nbsp;Toshiyuki Tomoda ,&nbsp;Fumiteru Akamatsu","doi":"10.1016/j.mtsust.2025.101143","DOIUrl":"10.1016/j.mtsust.2025.101143","url":null,"abstract":"<div><div>The traditional soda-lime silicate glass (SLS glass) melting process, utilizing fossil fuels and carbonate-containing raw materials, generates significant CO₂ emissions. Alternatively, NH₃ is gaining attention as a carbon-free fuel. Additionally, Na and Ca silicates possess the appropriate composition for SLS glass formation and do not emit CO₂ during melting. However, limited studies have reported SLS glass melting with NH₃ combustion owing to the difficulty faced during NH₃ combustion at high temperatures as 1450 °C. In this study, we used a model furnace with experimental glass melting conditions set at 1450 °C or higher, employing two-stage combustion on parallel independent jets to conduct melting experiments, where carbonate-free SLS glass raw materials are vitrified through NH₃ combustion. The resulting glass is subjected to material analysis using XRD, XRF, and gas chromatography to assess the occurrence of bubbles, inclusions, and color tone according to industry quality standards. The results demonstrate the feasibility of melting decarbonized SLS glass using NH₃ combustion and carbonate-free materials. However, NH₃ combustion influences the color tone, glass transition temperature, and clarity. Developing cost-effective methods for producing silicates without CO₂ emissions is crucial for alternative raw materials to remain competitive with conventional options. This method of preventing CO₂ generation from both raw materials and fuel in glass production indicates that combining decarbonized fuel combustion and silicate-based glass melting holds promise for reducing CO₂ emissions.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101143"},"PeriodicalIF":7.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168792","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}

{"title":"Ultrasonic-assisted synthesis of acidic Al-MCM-41 for enhanced selective production of HMF from glucose","authors":"Haoran Li ,&nbsp;Qisong Yi ,&nbsp;Yuanchao Shao ,&nbsp;Haimei Xu ,&nbsp;Zichun Wang ,&nbsp;Yuanshuai Liu","doi":"10.1016/j.mtsust.2025.101144","DOIUrl":"10.1016/j.mtsust.2025.101144","url":null,"abstract":"<div><div>The sustainable transformation of renewable biomass into value-added chemicals is essential to addressing global environmental and energy challenges. Among these, the production of 5-hydroxymethylfurfural (HMF) from biomass-derived glucose is of considerable interest for both scientific and industrial applications. In this study, mesoporous aluminium incorporated MCM-41 catalysts (Al-MCM-41) were synthesized using an ultrasonic-assisted method at room temperature. Their ordered mesoporous structure was preserved even with high concentrations of Al. The catalysts' acidity was finely tuned by varying the Si/Al ratio, enabling the development of an optimal catalyst to enhance the glucose-to-HMF conversion via Brønsted and Lewis acid catalysis. Characterization techniques, including XRD, TEM, N₂ adsorption-desorption, NH₃-TPD, Py-FTIR, ²⁹Si and ²⁷Al MAS NMR, were employed to evaluate the catalysts’ structure and acidity. The results revealed that ultrasonic-assisted synthesis strategy improves Al dispersion, optimizes acid site density, and significantly enhances HMF yield and selectivity. The best-performing Al-MCM-41-10 catalyst can afford ∼90 % glucose conversion with ∼60 % HMF selectivity at 160 °C, and displays excellent reusability under the applied reaction conditions. This study provides valuable insights into designing efficient catalysts for biomass conversion and underscores the broad applicability of the ultrasonic-assisted synthesis method for other heteroatom-doped mesoporous materials, such as Sn-MCM-41.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101144"},"PeriodicalIF":7.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099425","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}

{"title":"Advances and challenges in MoS2-based photocatalyst for hydrogen production via photocatalytic water splitting","authors":"Salisu Abdu ,&nbsp;Hafeez Yusuf Hafeez ,&nbsp;J. Mohammed ,&nbsp;Aminu Aliyu Safana ,&nbsp;Chifu E. Ndikilar ,&nbsp;A.B. Suleiman ,&nbsp;Ibrahim Alfa","doi":"10.1016/j.mtsust.2025.101142","DOIUrl":"10.1016/j.mtsust.2025.101142","url":null,"abstract":"<div><div>Hydrogen energy production via water splitting by using solar energy and appropriate photocatalyst is considered as an excellent renewable energy technology over the past few decades to address the global energy crisis due to its zero emission and cost effectiveness. MoS₂, a family of TMDs, is one of the promising photocatalyst that gained much research attention for its low cost, earth-abundance, optoelectronic properties. Despite these fascinating properties, it suffers some drawbacks in photocatalytic hydrogen production activity such as, high charge carrier recombination and inert basal plane. In this review, we first identify the fundamental knowledge of the properties (optical, electronic, crystal structure) of MoS₂ and photocatalysis-with more emphasis on photocatalytic H₂ production which was found to be more feasible than other methods of hydrogen generation. Subsequently, various strategies to enhance the MoS₂ activity of hydrogen production like metal/non-metal doping, formation of heterojunctions and using sacrificial agents were reviewed. The photocatalytic hydrogen production performance of MoS₂ photocatalyst coupled with different cocatalysts and its various methods of preparation were also reviewed.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101142"},"PeriodicalIF":7.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099427","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}

{"title":"A study of the mechanism of the hydrogen evolution reaction catalysed by molybdenum phosphide in different media","authors":"N. Podrojková ,&nbsp;A. Gubóová ,&nbsp;M. Streckova ,&nbsp;R. Oriňaková","doi":"10.1016/j.mtsust.2025.101141","DOIUrl":"10.1016/j.mtsust.2025.101141","url":null,"abstract":"<div><div>The electrochemical decomposition of water is an effective method of green hydrogen production due to the purity and renewability of the process. The production of hydrogen occurs through the hydrogen evolution reaction (HER), and the process may be facilitated by using proper catalysts. Transition metal phosphides (TMPs), especially MoP, can potentially replace expensive Pt-based catalysts. However, most studies deal with experimental research without DFT simulations, and the process's mechanism is not described in detail. Therefore, this study aims to investigate the catalytic performance and reaction mechanism of an MoP catalyst for HER across all pH ranges and combine electrochemical analysis with simulations to gain deeper mechanistic insights. MoP surfaces with (101), (110) and (100) facets are prepared and investigated with experimentally synthesised MoP samples studied in acidic, alkaline, and neutral media. MoP catalyst exhibits superior HER activity in an alkaline media with charge transfer resistance (<em>Rct</em>) of 7.12 Ω. DFT results also showed that H₂O adsorption is preferred on MoP(101) and MoP(110) with adsorption energy (<em>ΔE</em>_<em>ad</em><em>)</em> of −0.93 eV and −1.21 eV, respectively. Based on experimental and DFT results, a proposed HER mechanism considers various MoP facets and different media.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101141"},"PeriodicalIF":7.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099426","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}

{"title":"Mechanical performance of extrusion-based two-part 3D-printed geopolymer concrete: A review of advances in laboratory and real-scale construction projects","authors":"Mustapha B. Jaji,&nbsp;Adewumi J. Babafemi,&nbsp;Gideon P.A.G. van Zijl","doi":"10.1016/j.mtsust.2025.101131","DOIUrl":"10.1016/j.mtsust.2025.101131","url":null,"abstract":"<div><div>3D printing of geopolymer is considered an alternative to cement-based concrete due to its sustainability and novel manufacturing techniques. Comparisons have been drawn between one-part and two-part 3D-printed geopolymer concrete (OP3DPGPC and TP3DPGPC, respectively). Some articles have projected OP3DPGPC to be user-friendly since it is excited with powdered activators. However, the embodied energy and the carbon emissions of liquid silicate reactants in TP3DPGPC are 70 % and 50 %, respectively, less than the solid silicate used in OP3DPGPC. Also, studies show that TP3DPGPC exhibits superior mechanical performance compared to OP3DPGPC. This study comprehensively reviews the advances in the laboratory-scale and real-scale development of extrusion-based TP3DPGPC, their material composition, constituents’ proportion, and mechanical performance. Data were collected from articles published on TP3DPGPC across renowned journals from 2017 to 2024 and internet sources to identify real-scale TP3DPGPC structures. The mechanical properties of TP3DPGPC available in the literature include compression, flexure, interlayer bond, tensile bond, direct tensile, and splitting tensile strength. These studies show that the mechanical performance of TP3DPGPC depends on the type and proportion of precursor(s), type and composition of the reactants, aggregate type, aggregate-to-binder ratio, activator-to-binder ratio, the molarity of NaOH, SiO₂/Na₂O ratio, water-to-binder ratio, water-to-solid ratio, liquid-to-solid ratio, additive types, fibre (type, content, and aspect ratio), and curing (type and conditions). Similarly, the mechanical performance of TP3DPGPC is dependent on the printer parameters, the configuration, and the loading direction. The data generated will serve as the basis for future studies and the prediction of mechanical performance. Finally, a review of the microstructure properties is conducted to justify the mechanical performance.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101131"},"PeriodicalIF":7.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099526","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}

{"title":"Carbon emission, durability and application of solid waste based solidification material solidification soil","authors":"Benan Shu ,&nbsp;Guodong Zeng ,&nbsp;Maocong Zhu ,&nbsp;Keyi Qiu ,&nbsp;Yanfei Ren","doi":"10.1016/j.mtsust.2025.101135","DOIUrl":"10.1016/j.mtsust.2025.101135","url":null,"abstract":"<div><div>The present paper sets out a comparative analysis of carbon emission and economic benefit of different performance gradients solid waste based solidification material (SSM). The macro properties of SSM were the focus of systematic study, with the aim of gaining deeper insight into the response of the SSM to conditions such as freeze-thaw cycles, seawater erosion, dry-wet cycles and dry shrinkage. In order to facilitate this study, a range of analytical techniques were employed, including scanning electron microscopy (SEM), X-ray diffraction (XRD) and mercury intrusion porosimetry (MIP). The findings indicate that, in comparison with cement, the carbon emissions of SSM (A1) are diminished by 77.7 %, amounting to 190 kg/t, the carbon-performance ratio (24.4 kg/MPa), the cost-performance ratio (32.1RMB/MPa) and the carbon-cost ratio (0.76kg/RMB) are reduced by 86 %, 56 % and 68 % respectively. SSM demonstrated better performance in terms of freeze-thaw resistance, seawater erosion resistance and dry-wet resistance when compared to cement. The dry shrinkage value of SSM solidified soil was reduced by approximately 35 % at 40 days compared to cement solidified soil, due to compensatory shrinkage and a reduction in pores. In contrast to the relatively minor impact of seawater erosion and the moderate effects of the wet-dry cycle, freeze-thaw cycles have been shown to cause the most severe structural damage to the micro-structure of solidified soil. The conduction of durability tests resulted in increased porosity and the most probable aperture. The increase in pores and micro-structure leads to the attenuation of macroscopic mechanical properties of SSM solidified soil. The engineering application verified that with the content of SSM of 50 kg/m, 4.5 % and 3 %, the strength, bearing capacity and bending value of SSM modified soil were 1.9 MPa, 180 kPa and 158, respectively in deep mixing piles, shallow in-situ solidification, and roadbed modified soil field.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101135"},"PeriodicalIF":7.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084301","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}

{"title":"High aspect ratio hierarchical carbon nanoplate/functionalized carbon nanotube scaffolds for scalable binder-free ultrafast-charging supercapacitors","authors":"Ohchan Kwon ,&nbsp;Jun Hyuk Bae ,&nbsp;Ju Yeon Kim ,&nbsp;Minsu Kim ,&nbsp;Yunseong Ji ,&nbsp;Jeonghun Kim ,&nbsp;Sang-Young Lee ,&nbsp;Dae Woo Kim","doi":"10.1016/j.mtsust.2025.101138","DOIUrl":"10.1016/j.mtsust.2025.101138","url":null,"abstract":"<div><div>Binder-free supercapacitors are effective in achieving rapid charging/discharging capabilities, high power/energy density, and potentially reduced manufacturing costs. In this study, hierarchical carbon nanoplates (HCN) fabricated through the carbonization of high aspect ratio, polycrystalline metal-organic framework nanoplates. These HCN structures are then hybridized with functionalized carbon nanotube (FCNT) scaffolds and applied as electrodes using a scalable shear-coating method, eliminating the need for binders. The synergistic effects of these components result in the capacitance of 206 F/g at 0.8 A/g and 148.8 F/g at 8 A/g with a retention of 72 % in half-cell setups, and a full symmetric cell capacitance of 126 F/g at 4 A/g and 76 F/g at 40 A/g with a retention rate of 61 %. The power and energy densities of the full cell were measured to be 3880 W/kg and 16.2 Wh/Kg, surpassing the upper bound for electrochemical capacitors. The high rate capability and capacitance are attributed to the well-designed architecture of the electrodes and the benefits of the carbon components. Specifically, the high aspect ratio of the HCN with the hierarchical pore structure enhances the active surface area and charge transport properties. Additionally, the increased intermolecular interactions within the FCNT phase create entangled scaffolds, imparting both conductive pathways and mechanical stability. The binder-free nature of the electrodes, complemented by the presence of HCN spacers in the FCNT matrix, expands pores and promotes the transfer of ion species. Importantly, the viscoelastic properties of the HCN/FCNT slurry enable electrode fabrication in large areas by a scalable coating method.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101138"},"PeriodicalIF":7.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070948","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}