Materials Horizons最新文献

{"title":"Scalable assembly of micron boron nitride into high-temperature-resistant insulating papers with superior thermal conductivity.","authors":"Meng-Xin Liu, Rui-Yu Ma, Zhi-Xing Wang, Zhuo-Yang Li, Gui-Lin Song, Jie Lin, Xin-Yuan Li, Ling Xu, Ding-Xiang Yan, Li-Chuan Jia, Zhong-Ming Li","doi":"10.1039/d4mh01897d","DOIUrl":"https://doi.org/10.1039/d4mh01897d","url":null,"abstract":"<p><p>With the rapid development of modern electrical equipment towards miniaturization, integration, and high power, high-temperature-resistant insulating papers with superior thermal conductivity are highly desirable for ensuring the reliability of high-end electrical equipment. However, it remains a challenge for current insulating papers to achieve this goal. Herein, we demonstrate the design of high-temperature-resistant micron boron nitride (m-BN) based insulating papers with superior thermal conductivity by a universal and scalable one-step assembly strategy. Inspired by the floating shape of jellyfish in the ocean, aramid nanofibers (ANF) resembling the tentacles of jellyfish were employed to support the bell-shaped m-BN, which effectively addresses the kinetically stable dispersion and film-forming ability of m-BN. The resultant m-BN@ANF papers exhibit excellent high-temperature-resistant insulating performance with an ultra-high breakdown strength of 359.0 kV mm^-1 even at a high temperature of 200 °C, far exceeding those of these previously reported systems. In addition, the optimal m-BN@ANF paper demonstrates a superior thermal conductivity of 26.4 W m^-1 K^-1 and an excellent thermostability with an initial decomposition temperature of 486 °C. This outstanding comprehensive performance demonstrates the promise of applying these m-BN@ANF papers in advanced electrical systems operating under high-temperature circumstances.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699057","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":"Sprayed hyaluronic acid based multidrug composite hydrogel for postoperative colorectal cancer ultra-efficient long-lasting multi-stage immuno-chemo synergistic therapy.","authors":"Ya Wang, Xiaojiang Zhang, Yujie Zhang, Feiyu Shi, Siyuan Du, Zhe Zhang, Chenyu Zhao, Siyuan Luo, Pengqian Wang, Daocheng Wu, Junjun She","doi":"10.1039/d5mh00108k","DOIUrl":"https://doi.org/10.1039/d5mh00108k","url":null,"abstract":"<p><p>To enhance the therapeutic efficacy of postoperative colorectal cancer treatment and prevent peritoneal metastasis, we propose a strategy utilizing the photothermal-induced ultra-efficient and long-lasting multi-stage immuno-chemo synergistic therapy. To implement this strategy, oxaliplatin (OXA), curcumin (Cur), and Mn²⁺ were coordinated to form infinite coordination polymer nanoparticles (OXA-Mn(II)-Cur ICP NPs). These nanoparticles are encapsulated with polydopamine (PDA) to create OXA-Mn(II)-Cur ICP@PDA NPs, which are subsequently embedded in a sprayable hyaluronic acid-based hydrogel. The resulting ICP@PDA NPs@composite hydrogel exhibits strong tissue adhesion and segmented pH-responsive drug release properties. Notably, the hydrogel can sustainably release drugs for over 20 days <i>in vivo</i>, maximizing local drug concentration while minimizing systemic toxic side effects. Each component of the composite hydrogel serves multiple functions, and its application to postoperative tumor sites enables long-term, dual-pathway, multi-stage immune activation. This immune response synergizes with chemotherapy to achieve a highly effective therapeutic outcome. <i>In vivo</i> experiments demonstrated that the composite hydrogel effectively eliminates residual tumors, ensuring a 100% survival rate without recurrence for 80 days in treated mice. Furthermore, it inhibits peritoneal metastasis and completely eradicates intraperitoneal tumors within 20 days. The ICP@PDA NPs@composite hydrogel represents a promising therapeutic platform for postoperative colorectal cancer treatment and metastasis prevention.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699069","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":"Structuring 3D-printed polypropylene composites with vertically aligned mesophase pitch-based carbon fibers for enhanced through-plane thermal conductivity and mechanical properties.","authors":"Bowen Fang, Yan Wang, Hongjia Fan, Yumei Gong, Jing Guo, Zhiguo Wang, Jiazhuang Xu, Shengfa Wang","doi":"10.1039/d4mh01521e","DOIUrl":"https://doi.org/10.1039/d4mh01521e","url":null,"abstract":"<p><p>Vertically aligned structures in thermally conductive polymer-based composites (TPMCs) present an efficient tool for managing heat dissipation in battery packs and the central processing unit (CPU). Although there is significant progress in developing vertically aligned structures for thermal management using two-dimensional thermally conductive fillers (<i>e.g.</i>, boron nitride and graphene) in TPMCs, their practical applications are limited by the compromised mechanical properties. In this study, carbon fiber (CF) reinforced polypropylene (PP) composites with vertically aligned structures were successfully fabricated using 3D printing. The CFs exhibited exceptional alignment along the printing direction in the PP matrix, attributed to the shear and compression effect during printing. Additionally, the incorporation of CFs and the use of a hot-pressed PP substrate instead of the original platform effectively mitigated shrinkage and warping of PP. The vertically printed samples achieved a superior through-plane thermal conductivity (TC) of 3.61 W m^-1 K^-1 at 21 vol% CF loading, representing an improvement of 5.56 and 15.41 times over that of horizontally printed parts and neat PP, respectively. Meanwhile, the as-printed vertically aligned parts also demonstrate excellent tensile strength (40.16 MPa) and impact strength (28.17 kJ m^-2), which are around 1.70 and 11.45 times that of horizontally printed parts. Notably, the surface temperature of the vertically printed heat sink was comparable to commercial parts, underscoring the superior thermal dissipation performance of the composite material. Simulations verified the anisotropic design's effectiveness in enhancing thermal conductivity. This work provides a facile and cost-effective method to simultaneously enhance through-plane TC and mechanical properties, with promising application in electronic packaging and battery thermal management.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699070","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":"Ultra-high thermally conductive graphite microplatelet/aramid nanofiber composites with reduced interfacial thermal resistances by engineered interface π-π interactions.","authors":"Yu-Yang Song, Niu Jiang, Shuang-Zhu Li, Lu-Ning Wang, Lu Bai, Jie Yang, Wei Yang","doi":"10.1039/d5mh00070j","DOIUrl":"https://doi.org/10.1039/d5mh00070j","url":null,"abstract":"<p><p>Polymer-based thermally conductive composites with ultrahigh in-plane thermal conductivity are ideal candidates for heat dissipation applications in electronics. However, the complex interfaces between the functional filler and polymer matrix limit the significant increase in thermal conductivity of the polymer composites. In this study, we developed a one-pot strategy to prepare highly thermally conductive composite films of freeze-expansion large-size graphite microplatelets (F-GMPs) and aramid nanofibers (ANFs) with π-π interactions. The obtained F-GMP/ANF nanocomposite films present salient in-plane thermal conductivity, considerable flexibility, and outstanding long-term stability. The π-π interactions between the F-GMPs and ANFs promote the freeze-expansion exfoliation of graphite, yielding stable F-GMP/ANF precursor pastes with high-quality graphite platelets. Moreover, the π-π interactions improve the filler-matrix interfacial compatibility and reduce the interfacial thermal resistance, while the large-size F-GMP particles are directly lapped to construct a thermal transfer pathway with a reduction in the filler-filler interfacial thermal resistance. Consequently, the F-GMP/ANF composite films with 30 wt% F-GMPs exhibit unprecedentedly high in-plane thermal conductivity (56.89 W m^-1 K^-1) and corresponding thermal conductivity enhancement efficiency, presenting great application potential for the effective thermal management of highly integrated electronics.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690375","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":"Low-temperature, low-pressure Zn-ion hybrid supercapacitor in extreme near-space application.","authors":"Weijia Liu, Haiqing Liu, Yin Sun, Zhiyi Gao, La Li, Guozhen Shen","doi":"10.1039/d5mh00233h","DOIUrl":"https://doi.org/10.1039/d5mh00233h","url":null,"abstract":"<p><p>The development and utilization of airspace, especially near-space particularly rely on power units with superior tolerance in low-temperature and low-pressure environments to output a stable energy supply. Here we propose a strategy towards low-temperature, low-pressure Zn-ion hybrid supercapacitor based on a weakly hydrogen-bonded electrolyte and a hyacinth-shaped Ti₂CT_<i>x</i> MXene@CC cathode with hierarchical bridge-linked structure, which synergistically reduces the internal resistance of the device and enables the assembled supercapacitor showing a good low-temperature resistance while combining low-gas-voltage safety. The ACN additive weakens the hydrogen bond between water molecules and reshapes the solvation structure of Zn²⁺, thus reducing the ion transfer resistance and achieving a reversible Zn/Zn²⁺ chemical reaction. The bridge-linked hierarchical structure of the hyacinth-shaped Ti₂CT_<i>x</i> MXene@CC cathode provides a rich conductive network and optimizes the ion diffusion path, which reduces the ion diffusion resistance. At -40 °C, the assembled device can still achieve an area specific capacitance of 64.0 mF cm^-2 at a scan rate of 500 mV s^-1, and long-term stability after 20 000 cycles at a current density of 20 mA cm^-2. An integrated temperature and pressure sensing system driven by the supercapacitor successfully realizes the monitoring of atmospheric indicators in extreme environments, providing new ideas for auxiliary power units in airspace and near-space.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690348","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":"Self-powered electrochemical energy systems to produce fuels.","authors":"Hui Zhao, Zhong-Yong Yuan","doi":"10.1039/d5mh00285k","DOIUrl":"10.1039/d5mh00285k","url":null,"abstract":"<p><p>In the pursuit of efficient fuel production, the challenges posed by the requirement of an external power source have prompted the need for self-powered energy systems by obtaining energy from the environment. Until now, significant progress on developing self-powered energy systems has been made. However, a more basic and in-depth study on their configuration is required for industrial applications. In this review, we outline the latest advancements of self-powered electrochemical energy systems constructed with solar energy, rechargeable batteries/fuel cells and triboelectric nanogenerators. Critical evaluations of the electrochemistry are highlighted to address the issues in elevating the efficiency of fuel production. In addition, the existing challenges and future prospects are also discussed, aiming to develop highly-efficient self-powered energy systems for green fuel production in the future.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690369","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":"Catalytic amounts of sodium-sulfonate-naphthol enable mechanically robust, ultra-transparent, super-fire-resistant and easily recyclable polycarbonate.","authors":"Yue Li, Lin Chen, Pan Deng, Yan Guo, Xiu-Li Wang, Yu-Zhong Wang","doi":"10.1039/d5mh00260e","DOIUrl":"https://doi.org/10.1039/d5mh00260e","url":null,"abstract":"<p><p>Polycarbonate is an advanced engineering plastic widely used in aerospace, high-speed rail and 5G communications. However, it remains a huge challenge to synthesize polycarbonate materials using a strategy that simultaneously integrates green-preparation, service-stage advanced-performance and end-of-life easy-recyclability. Herein, we propose an ultrahigh-efficiency and green halogen/phosphorus-free strategy to prepare a mechanically robust, highly transparent, super-fire-resistant and chemically easily recyclable polycarbonate plastic. By chemical copolymerization of only catalytic amounts of sodium sulfonate-naphthol (0.3-0.5 mol%, namely 3400-5600 ppm), the corresponding polycarbonates exhibit >85 MPa tensile strength, >67 kJ m^-2 notched impact strength, >90% transparency, >36% ultra-high limiting oxygen index and 1.6 mm thin-wall UL-94 V-0 rating during the service-stage. Especially, at the end-of-life, these polycarbonates can be easily depolymerized back to the raw monomer bisphenol A and high-value 2-oxazolidinone under mild conditions (50 °C for 4 h), achieving ultra-high atom-economic chemical recycling. Starting from the source of a chemical structure, this work opens up a new perspective for constructing life cycle-managed plastic materials with advanced high-performance and full-recyclability, contributing to the global circular economy through sustainable material design.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690590","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":"Recycling and regeneration of failed layered oxide cathode materials for lithium-ion batteries.","authors":"Changhao Li, Weihao Zeng, Juan Wang, Zhongpeng Li, Jin Zhang, Xuanpeng Wang, Shichun Mu","doi":"10.1039/d4mh01803f","DOIUrl":"https://doi.org/10.1039/d4mh01803f","url":null,"abstract":"<p><p>With broad usage of lithium-ion batteries (LIBs) in electronic devices and electric vehicles (EVs), a large number of decommissioned LIBs will be generated, which cause serious environmental pollution and waste of resources. Therefore, to reduce environmental pressure and realize secondary resource utilization of valuable metals, recycling decommissioned LIBs is urgent. At present, although pyrometallurgy, hydrometallurgy, direct regeneration and other methods have been used significantly in the recovery of failed LIB cathode materials, it is still necessary to formulate the best recovery strategy to achieve higher recovery efficiencies and value-added materials from spent cathodes. Thus, in this article, the latest progress in the recycling of retired LIB layered oxide cathode materials is reviewed in detail, and the recycling process, advantages and limits of each recycling method are analyzed. In view of the recycling challenges, the future development is prospected to promote the sustainable, environmentally friendly and efficient reutilization of failed LIB cathodes and contribute to the low-carbon circular economy.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699056","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":"Defect-engineered 2D Bi₂Se₃-based broadband optoelectronic synapses with ultralow energy consumption for neuromorphic computing.","authors":"Sanju Nandi, Sirsendu Ghosal, M Meyyappan, P K Giri","doi":"10.1039/d4mh01625d","DOIUrl":"https://doi.org/10.1039/d4mh01625d","url":null,"abstract":"<p><p>Optoelectronic synapses (OES) inspired by the human brain have gained attention in addressing the von Neumann bottleneck facing traditional computing. Numerous candidates, including topological insulators and other 2D materials, have been used to fabricate OES devices with different degrees of success. Se vacancies commonly appearing in epitaxially grown Bi₂Se₃ and importantly the ability to modulate the vacancies by changing the growth temperature make it a worthy candidate to construct an OES system. The vacancies effectively trap and release charges, leading to persistent photoconductivity, which is the mechanism behind OES operation. A defect-induced Bi₂Se₃-based synapse using an ultrathin layer grown by chemical vapor deposition is shown herein to successfully demonstrate basic synapse characteristics such as paired-pulse facilitation (PPF), short-term and long-term memory, and learning-relearning behavior. This OES device shows a very high PPF index of 201.7%, a long memory retention time of 523.1 s, and an ultralow energy consumption of 9.2 fJ per spike, which is at the low end of the 1-100 fJ range for biological systems. Density functional theory simulations reinforce the definite role of trap centers induced by the Se vacancies in the device operation. Our device realizes a high recognition accuracy of 90.12% for MNIST handwritten digital images in simulations based on an artificial neural network algorithm. The exceptional results achieved here show the potential of Bi₂Se₃ for synaptic applications and pave the way for exploiting its potential in future high-performance neuromorphic computing and other artificial visual perception systems.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690594","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":"On-demand design for elastic metamaterial based on a semi-analytical band gap rapid extraction method.","authors":"Xingzhong Wang, Zhibin Liang, Zhengqing Tang, Shiteng Rui, Kaifu Li, Fuyin Ma","doi":"10.1039/d5mh00174a","DOIUrl":"https://doi.org/10.1039/d5mh00174a","url":null,"abstract":"<p><p>For various engineering equipment, design parameters such as the metamaterial band gap range, weight, and size are often variable. Previous design of metamaterials enables customized designs for specific operating frequency requirements, different space size constraints, and other requirements. However, due to the complexity of metamaterial configurations and the cumbersome process of band gap calculation, existing metamaterial design methods cannot accommodate the dynamic and complex design requirements in engineering applications. To this end, we propose an elastic metamaterial on-demand design method based on a semi-analytical band gap rapid extraction approach, implemented using the COMSOL-MATLAB co-simulation platform. This method can quickly identify the vibration-absorbing band gap range through modal displacement calculations at specific wave vector points, enabling semi-analytical band gap extraction for elastic metamaterials. Additionally, through iterative design and genetic algorithm optimization, we build and autonomously update a metamaterial performance database, and establish a metamaterial customized design software platform. Compared to current methods, the semi-analytical band gap extraction ensures high computational efficiency for intelligent algorithms, while the co-simulation design significantly reduces design complexity. The design results of the method proposed in this paper are accurate and reliable, providing a technical approach for the rapid optimization design of vibration-absorbing metamaterials and customized low-frequency vibration control in industrial applications.</p>","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699055","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}