Journal of Energy Storage
·
2026
·
IF 9.8
Xiang Yu,Fengkai Wang,Wenqi Zhang,Rui Yang,Zhongyao Chai,Sidi Fan
Thin-film capacitors, utilized for capacitive energy storage, hold significant importance in modern power and electronic systems. To fulfill high-temperature demands, polymers with high glass transition temperatures are adopted for thin-film preparation. However, high-temperature energy density still suffers from exponentially increasing leakage currents. Here, we incorporate ZIF-8 metal-organic framework fillers in the matrix of poly ( m -phenylene isophthalamide) (PMIA) to prepare the composite films. ZIF-8 exhibits organic compatibility due to its organic ligands, and it owns self-stability, devoid of inducing the PMIA chain plasticization. Strong hydrogen bonds form between the amide groups in PMIA and imidazole rings in ZIF-8, optimizing the PMIA chain conformation with minimized free volume. Accompanied by electron scattering at the PMIA/ZIF-8 interfaces, leakage current is reduced by one order of magnitude. At a 0.3 wt% content, the film exhibits a breakdown strength of 688.9 MV·m −1 at 150 °C and 609.9 MV·m −1 at 200 °C. Furthermore, the polyhedron geometry of ZIF-8 intensifies interfacial polarization, yielding a high dielectric constant of 5.72 at 200 °C and 100 Hz, and a low dielectric loss confined by the hydrogen bonding network. These improvements achieve a maximum energy density of 12.88 J·cm −3 at 150 °C and 9.45 J·cm −3 at 200 °C, highlighting its potential for high-temperature energy storage.
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Jun Yu,Yi Liu,Mengqi Wang,Xiaoxin Guo,Xingyu Zhang,Yihang Dong,Jiawei Yan,Keqin Zhang,Yuqing Liu
Hydrophilic modification of materials is crucial for optimizing the performance of flexible supercapacitors, which are promising energy-storage devices for flexible and wearable electronics. However, enhancing the wettability of coaxial electrospun membranes to facilitate the uniform growth of active materials and improve electrochemical performance remains a key challenge. Herein, we propose a hydrophilic modification strategy using ethanolamine (MEA) heat treatment, which significantly enhances the wettability of coaxial electrospun CNT/MOF-5/PAN/PVDF (C-MNF) membranes and promotes the uniform in situ growth of Co3O4 nanoneedles. Characterization results reveal that hydrophilic modification improves the penetration and diffusion of Co2+ ions within the substrate, optimizing the nucleation and growth environment for Co3O4 crystals. By integrating multiple mechanisms such as Zn2+/Co2+ ion exchange, Fe3+-induced oxidation, and spontaneous crystal transformation, the material’s interface structure and electrochemical performance were synergistically enhanced. The resulting Co3O4@C-MNF composite electrode achieved a mass-specific capacitance of 310 F g–1 at 0.5 A g–1, with good rate performance (250 F g–1 at 10 A g–1) and low interfacial resistance (∼51 Ω). A symmetric supercapacitor device constructed with the modified material exhibited a maximum energy density of 4.94 Wh kg–1, high cycling stability (94.2% capacity retention after 8000 cycles), and stable output in various bending states. These results highlight the potential of the device for flexible, wearable energy storage applications and provide an approach and material system for the design of high-performance flexible supercapacitors.
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高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2026
·
IF 2.9
Wang Guoqiang,Yu Qingbo,Feng Xiujuan
Using titanium ester Tyzor 371 and dicyandiamide as raw materials, modified precursors DCDA-x were synthesized by hydrothermal method with controlled titanium ester ratios, followed by calcination to prepare TiO 2 -composited C-doped g-C 3 N 4 catalysts TCCN-x. The study shows that hydroxyl groups of the titanium ester form hydrogen bonds with amino groups of dicyandiamide, and their combined steric hindrance suppresses the polymerization of g-C 3 N 4 . Among them, the TCCN-3 precursor exhibits the strongest hydrogen bonding and the most significant inhibition effect. During calcination, the titanium ester decomposes to produce amorphous carbon that integrates into the heptazine rings or interlayers of g-C 3 N 4 , facilitating charge transfer. Simultaneously, the formed TiO 2 creates heterojunctions with g-C 3 N 4 , enhancing carrier separation. Together, these effects synergistically improve the photocatalytic performance. After 60 min of visible-light irradiation, TCCN-3 achieves a methylene blue degradation rate of 53.02%, which is 2.24 times that of pure g-C 3 N 4 (23.60%), exhibiting the best performance. Graphical abstract
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JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 6
·165
·
IF 3.5
Yang Menghui,Gao Zhen,Zhan Haoyu,Bi Mengqi,Huang Naibao,Zhang Junjie,Gan Ziqi,Wang Hao
Developing highly active, durable, and cost-effective oxygen reduction reaction (ORR) catalysts is crucial for fuel cell commercialization through the use of non-precious metal alternatives to platinum. In this study, the tunable dodecahedral Fe-N-C catalysts were synthesized through controlled pyrolysis of Fe-doped zeolite imidazolate framework-8 (ZIF-8) precursors. The optimized 5% Fe@NC-8 catalyst demonstrates excellent ORR performance with an onset potential of 0.92 V vs. RHE, a half-wave potential (E 1/2 ) of 0.83 V vs. RHE, and a limiting diffusion current density (j d ) of 6.06 mA cm −2 , surpassing commercial 20% Pt/C catalysts (onset potential 0.89 V vs. RHE; E 1/2 0.81 V vs. RHE; j d 4.27 mA cm −2 ). It also shows strong durability, retaining 86.16% of its current after prolonged polarization (@0.80 V vs. RHE for 10,000 s) and minimal negative shift in half-wave potential after extensive cycling(@200 mV s −1 for 5000 CV cycles). The enhanced catalytic performance is attributed to (i) possessing a high specific surface area (319 m 2 g −1 ) and favorable porosity to maximize active site accessibility; (ii) having abundant active sites of Fe-N x , graphitic N, and pyridinic N as active catalytic centers; and (iii) forming N-doped carbon matrices to provide a conductive framework. These advantages boost the density of accessible active sites and thus remarkably improve the ORR catalytic activity.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 8
·e70443
·
IF 12.1
Weinan Yao,Wenzhuo Sun,Mengjiao Wu,Nana Li,Wenting Li,Xiaotian Guo,Bin He,Huan Pang
en This link goes to a English section zh This link goes to a Chinese section A facile coprecipitation-pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen-doped carbon matrices (Cu/Co@N-C) through the carbonization of CuCo-MOF precursors. Moreover, monometallic counterparts of Cu@N-C and Co@N-C were also prepared via carbonization of bimetallic CuZn-MOF and CoZn-MOF, respectively. Electrochemical tests confirm that Cu acts as the key active center for nitrite oxidation. By adjusting the Cu/Co molar ratios, a series of cubic Cu/Co@N-C composites with tunable sizes of 200–500 nm were achieved. The synergistic interaction between metallic Cu/Co NPs and the conductive N-C framework enhances catalytic activity and reduces overpotential compared to the monometallic Cu counterpart. The optimized Cu/Co@N-C/glass carbon electrode (GCE) sensor delivered a superior sensitivity as high as 0.461 μA μM −1 cm −2 and wide detection range of 2–10000 μM. The Cu/Co@N-C/GCE sensor also demonstrated superior selectivity, long-term stability of 92.5% retention after 21 days, and reproducibility. This work establishes a versatile approach for engineering various MOF-based catalysts, demonstrating promising potential for applications in environmental monitoring and food safety analysis. 摘要 en This link goes to a English section zh This link goes to a Chinese section 采用一种简便的共沉淀–热解策略 , 以 CuCo-MOF 前驱体为碳源进行碳化 , 成功制备了氮掺杂碳基质负载的 CuCo 双金属纳米颗粒复合材料(Cu/Co@N-C)。此外 , 还分别基于双金属CuZn- MOF和CoZn-MOF碳化制备了Cu@N-C和Co@N-C。电化学测试表明Cu是亚硝酸盐氧化的关键活性中心。通过调控 Cu/Co 摩尔比 , 获得了粒径可调、尺寸范围为 200–500 nm 的立方体 Cu/Co@N-C 复合材料。与单金属Cu@N-C相比 , 金属Cu/Co NPs与导电N-C框架之间的协同作用增强了催化活性并降低了过电位。优化后的 Cu/Co@N-C/玻碳电极(GCE) 传感器表现出优异的电化学传感性能 , 其灵敏度高达 0.461 μA μM −1 cm −2 , 检测范围宽达 2–10000 μM。Cu/Co@N-C/GCE 传感器还展现出优异的选择性、良好的重复性以及长期稳定性 , 在存放21天后仍可保持 92.5% 的电流响应。该工作为构筑各种MOF 基催化材料提供了一种通用策略 , 显示出其在环境监测与食品安全分析领域的广阔应用前景。
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Laser & Photonics Reviews
·
2026
·
IF 9.7
Wenpei Hu,Jianan Huang,Xiaoxiao Han,Wenhao Li,Sikai Wang,Ruilin Zheng,Luyue Niu,Yonggui Yuan,Xiaoxin Zheng,Jiaxuan Ye,Jianzhong Zhang,Jing Ren
For underwater disinfection, ultraviolet-C (UVC) light sources must exhibit waterproof integrity, corrosion resistance, and long-term stability. To meet these requirements, we present a promising UVC-emitting platform based on transparent Pr 3+ -doped fluoro-phosphate glass-ceramics (GCs). These GCs can be remotely excited in water using 450 nm blue-light, which propagates effectively in seawater with minimal attenuation. This excitation produces strong upconverted UVC emission that aligns with the germicidal efficacy peak, achieving a 73% inactivation rate against Staphylococcus aureus . The GCs also exhibit high stability during a 30-day seawater immersion test. Owing to their transparency, disinfection can be performed on both exterior and interior surfaces—a distinct advantage over optically opaque ceramic phosphors, which are limited to only exterior surface disinfection. This work provides a robust, low-cost, and eco-friendly photonic platform for remote underwater disinfection and biofouling control.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yizhe Wang,Ye Yuan,Siyue Li,Peiyuan Zuo,Xiaoyun Liu,Qixin Zhuang
The dielectric–magnetic synergy and interfacial engineering is an important methodology to boost electromagnetic wave absorption performance. We herein propose a novel “coating-ion exchange etching-high temperature carbonization” process to synthesize yolk–shell zinc oxide/carbon@air@cobalt-nickel alloy (ZnO/C@air@CoNi) nanocages by taking advantages of dielectric–magnetic synergy and interfacial effect. The bimetallic core–shell ZIF-8@ZIF-67 precursor is employed as the structural template while Ni(NO₃)₂·6H₂O as an etchant to ensure controlled ion-exchange etching. The resulting dielectric zinc oxide/carbon (ZnO/C) core promotes interfacial polarization and dipole reorientation losses, while the CoNi shell enhances conductive loss and magnetic loss. Thanks to the dielectric–magnetic synergy and interfacial effect, the ZnO/C@air@CoNi nanocomposite exhibits outstanding electromagnetic wave absorption performance, achieving a maximum reflection loss of −72.28 dB and an effective absorption bandwidth of 5.28 GHz (12.40 −17.68 GHz) at a low filler loading of 20 wt%. This work provides new ideas to design absorbers by leveraging the structural versatility of MOF-derived precursors.
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高影响因子
Electron
·
2026
·
IF 15.2
Yong-Mei Hou,Yi Ren,Xu Hao,Han Jia,Xiao-Nan Zhou,Zhi-Lei Wei,Zhong-Qi Shi,Jian-Feng Yang,Bo Wang,Suo-Cheng Song
The electromagnetic interference shielding effectiveness (EMI SE) of materials is highly related to their microstructures. Mimicking nature is an effective and useful strategy for designing high performance materials, even though it remains a great challenge. Herein, a biomimetic, anisotropic, robust wood-derived 3D conductive Bio-C@YB 2 C 2 framework was synthesized by in situ boron/carbon thermal reduction reaction on the carbonized wood template. The as-obtained Bio-C@YB 2 C 2 composites accurately inherit the specific microstructure of natural wood, providing pathways for terahertz wave dissipation. The thermal and electrical conductivity of composites increased with the content of layered superconductor YB 2 C 2 coated on the surface of Bio-C. The resulting Bio-C@30YB 2 C 2 ceramic exhibits exceptional performance, including a high thermal conductivity of 12.36 W·m −1 ·K −1 , an outstanding electrical conductivity of 204.13 S·cm −1 , and an efficient Joule heating performance, reaching 173.3°C at an applied voltage of 1.5 V. Meanwhile, it demonstrated a remarkable EMI SE (55.5 dB) in the X-band (8.2–12.4 GHz) for the sample with 1.5 mm thickness and normalized EMI SE/ t value as high as 37.0 dB·mm −1 , surpassing numerous other EMI shielding materials and their composites at equivalent thicknesses. It was due to the multiple reflections in the vertically aligned and densely interconnected microchannels, conduction loss and interfacial polarization at the interface of Bio-C@30YB 2 C 2 , and the superconductivity of YB 2 C 2 . This approach is anticipated to provide novel insights for designing ultra-high temperature electromagnetic shielding and electric heating materials.
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高影响因子
ACS Sensors
·
2026
·
IF 10.9
Pang Lok Tim,Lam Miu Ling,Szeto Cheuk Chun,Chen Ting-Hsuan
Urinary cystatin C (uCysC) has emerged as an endogenous biomarker for renal impairment. In managing renal pathologies, early screening and monitoring of disease progression are crucial for both at-risk individuals and diagnosed patients. The ultimate goal is to prevent and mitigate the associated risks of morbidity and mortality, thereby promoting longevity. However, conventional methods for quantifying uCysC have limitations that hinder their applications in point-of-care for resource-limited settings. In this study, we provide a sample-to-answer quantitative rapid test to monitor uCysC levels. The device uses a vent for urine sampling with a fixed volume, gravitational sedimentation for effective on-device reaction, and a dual-microbead immunoassay for the length-based visual quantification of uCysC. The achieved limit of detection (LOD) is 33.33 ng/mL, with excellent selectivity, pH level tolerance, and high accuracy. This all-in-one device bypasses peripheral lab settings to enable low-cost testing of renal impairment, which will benefit both general users and medical practitioners for telemedicine applications and large-scale disease self-management.
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PubMed
高影响因子
ENERGY & FUELS
·
2026
·
IF 6
Min Li,Mingshu Zhao,Qiuwen Wang,Haoyu Liu,Zhou Su,Lidong Jiao,Qingyi Ren
Aqueous supercapacitors possess high power density, long cycle life, and rapid charging and discharging capabilities, while their practical application is significantly limited by low energy density. The development of high-performance electrode materials, especially anodes, is crucial for enhancing the energy density of supercapacitor devices. In this work, Bi–Bi2O3 nanoparticles were anchored onto carbon fibers (Bi–Bi2O3@C) via a combined solvothermal and calcination process, using natural cotton to derive the biomass-derived carbon framework. The resulting Bi–Bi2O3@C composite was utilized as an anode material for aqueous supercapacitors, demonstrating excellent electrochemical performance with a specific capacity of 253.5 mAh g–1 (912.6 F g–1) at 1 A g–1. Furthermore, a high-performance cathode material composed of NiS2 nanoparticle-decorated Ni(OH)2 nanosheets (NiS2@Ni(OH)2) was prepared by a simple hydrothermal method to achieve optimal matching with the anode. The obtained NiS2@Ni(OH)2 nanosheets cathode composite displays high specific capacitance of 1984 F g–1 at 1 A g–1 and remarkable rate capability, retaining 57% of its original capacity even at a high current density of 10 A g–1. The constructed NiS2@Ni(OH)2//Bi–Bi2O3@C aqueous asymmetric supercapacitor (ASC) delivers a high energy density of 64.4 Wh kg–1 at a power density of 798.2 W kg–1, and maintains a high energy density of 43.1 Wh kg–1 even at a power density of 15.9 kW kg–1.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xiaoxue Mao,Longzhen Wang,Zhiyong Xiong,Yuhao Xiang,Jiaxi Xu,Sirui Wan,Maowen Xu,Qianru Ma
The shuttle effect, volume expansion, and slow conversion kinetics of sodium polysulfides (NaPSs) are significant challenges for room-temperature sodium‑sulfur batteries (RT Na S). To address these issues, this work designs a carbon-coated sulfur carrier (NiCo 2 S 4 ) with a unique hollow network structure. The unique structure provides ample space for sulfur's volume expansion, while the carbon material's excellent conductivity facilitates electron transport. Furthermore, the S@NiCo 2 S 4 /C composite cathode features a bimetallic sulfide framework that simultaneously provides strong anchoring and catalytic conversion functionality for polysulfides. Remarkably, the S@NiCo 2 S 4 /C cathode material maintains a capacity of 416.3 mA h g −1 after 400 cycles at 0.5C rate, with a cycle-dependent decay rate of merely 0.1%, demonstrating its excellent cycling stability and application potential. This study provides novel design concepts for cathode materials, which are essential for advancements in RT Na S batteries. This work designed and synthesized a carbon-coated NiCo₂S₄ hollow nanotube framework as a highly efficient sulfur host. During cycling, the polar NiCo 2 S 4 component not only chemically anchors sodium polysulfides to suppress dissolution but also acts as a catalyst to accelerate their redox conversion, thereby enhancing sulfur electroactivity. Therefore, the assembled cathode exhibits excellent cycling stability and rate performance in RT Na S batteries. Download: Download high-res image (159KB) Download: Download full-size image
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PubMed
高影响因子
Nature Synthesis
·
2026
·
IF 22.6
Zhang Hao,Liu Ziming,Li Di,Wu Chenxin,Hua Lei,Li Haiyang,Yi Yanhui,Huang Rui,Yu Liang,Deng Dehui
Direct co-conversion of earth-abundant N 2 and CH 4 to high-value C–N–O compounds is a promising synthetic method but remains challenging, as the activation of N 2 and CH 4 typically requires high-energy conditions that can cause product decomposition. Here we report a plasma-cascade process for synthesizing cyclohexanone cyanohydrin (Cy(OH)CN) via direct coupling of N 2 and CH 4 plasma with cyclohexanone. This catalyst-free process achieves a Cy(OH)CN formation rate of 0.60 mmol h −1 with a high selectivity of 95.8% towards the cyclohexanone-derived products under mild conditions, concurrently generating ammonia as a valuable coproduct. Comprehensive mechanistic studies reveal that plasma-generated ·CH x and hydrogen radicals enable direct α-carbonyl functionalization of cyclohexanone to α-CH x cyclohexanol intermediates, which then coupled mainly with excited-state N 2 and are further activated by hydrogen radicals to generate Cy(OH)CN. This plasma-cascade strategy decouples the activation of inert molecules from the formation of relatively unstable C–N–O compounds, enabling selective cyanohydrin synthesis that avoids using high-cost NH 3 and toxic HCN. The alternative text for this image may have been generated using AI.
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高影响因子
危险品化学品经营许可证（带存储）