IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-30 DOI: 10.1016/j.carbon.2025.121220

Jiaqi Lan , Qiaowei Lin , Xudong Li , Yun Cao , Haoran Chi , Mengyao Li , Jiayi Li , Da-Wei Wang , Wei Lv

Hard carbon anodes are important to the commercialization of sodium-ion batteries (SIBs), but their electrochemical performances are still limited by low reversible capacity and poor Coulombic efficiency. Lignocellulosic biomass waste is a promising precursor, but the thermochemistry of biochar formation that controls the development of its critical microstructure, closed nanopores and enlarged interlayer distance remains poorly understood. The temperature-driven pyrolysis of the biomass is inevitably accompanied by decomposition, leading to porous structures that facilitate electrolyte side reactions. Here, we show that a pre-carbonization strategy can regulate biochar microstructure through tuning the competition between decomposition and cross-linking in a model biomass waste, mangosteen shells. By optimizing pre-carbonization and the subsequent carbonization, we guide the microstructure evolution to produce a hard carbon that possesses both short-range ordered carbon layers with expanded interlayer distance and abundant closed nanopores, while minimizing specific surface area. These structural features enable highly reversible pore-filling charge storage and rapid Na⁺ diffusion, delivering a high reversible capacity of 309 mAh g⁻¹ and a high initial Coulombic efficiency (ICE) of 81.8 %. Our findings highlight the importance of temperature-driven thermochemistry and microstructure evolution of biomass, which can shed light on electrochemical reactions wherever carbon plays a crucial role.

硬碳阳极对钠离子电池的商业化具有重要意义，但其电化学性能仍然受到可逆容量低和库仑效率差的限制。木质纤维素生物质废弃物是一种很有前途的前驱体，但生物炭形成的热化学过程控制着其关键微观结构、封闭纳米孔和扩大层间距离的发展，但人们对其了解甚少。温度驱动的生物质热解不可避免地伴随着分解，导致多孔结构，有利于电解质的副反应。在这里，我们展示了预碳化策略可以通过调节模型生物质废物山竹壳中分解和交联之间的竞争来调节生物炭的微观结构。通过优化预炭化和后续炭化，我们指导微观结构的演变，生产出具有扩大层间距离的短程有序碳层和丰富的封闭纳米孔的硬碳，同时最小化比表面积。这些结构特征使得高可逆的孔隙填充电荷存储和快速的Na+扩散，提供309 mAh g−1的高可逆容量和81.8%的高初始库仑效率（ICE）。我们的研究结果强调了温度驱动的热化学和生物质微观结构演化的重要性，这可以揭示在碳起关键作用的电化学反应。

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引用次数: 0

High-performance chemically modified graphene films via spatially confined evaporation 通过空间限制蒸发的高性能化学修饰石墨烯薄膜

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-29 DOI: 10.1016/j.carbon.2025.121212

Zetong Zhuang, Yiqing Zhou, Jiaojiao Feng, Haonan Xiong, Chun Li

Chemically modified graphene (CMG) films, including graphene oxide (GO) and reduced graphene oxide (rGO) films, have attracted great interest for their electrical and mechanical properties. A mild oxidation method, in combination with the spatially confined evaporation strategy, is utilized to prepare high performance GO films with minimal nanoscale and microscale defects. Additionally, we find the performance of rGO films is challenged by residual solvent induced by the reduction process. The addition of cellulose nanocrystals (CNC, 5 % in weight) can facilitate the evaporation of solvent during chemical reduction and promote the densification of rGO films. The rGO-CNC composite films show superior mechanical strength (1.17 ± 0.06 GPa), electrical conductivity (1220 ± 60 S cm⁻¹), along with a shielding effectiveness of 35.1 dB in X-band, making them attractive in electromagnetic interference shielding applications.

化学改性石墨烯（CMG）薄膜，包括氧化石墨烯（GO）和还原氧化石墨烯（rGO）薄膜，因其电学和力学性能而引起了人们的广泛关注。采用温和氧化法，结合空间限制蒸发策略，制备了具有最小纳米级和微米级缺陷的高性能氧化石墨烯薄膜。此外，我们发现还原过程中产生的残留溶剂对还原氧化石墨烯薄膜的性能构成了挑战。添加纤维素纳米晶体（CNC，重量5%）可以促进化学还原过程中溶剂的蒸发，促进还原氧化石墨烯薄膜的致密化。rGO-CNC复合膜具有优异的机械强度（1.17±0.06 GPa），电导率（1220±60 S cm−1），以及35.1 dB的x波段屏蔽效能，使其在电磁干扰屏蔽应用中具有吸引力。

引用次数: 0

Writing, rewriting, and directing matter on a graphene canvas 在石墨烯画布上书写、重写和指导物质

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-29 DOI: 10.1016/j.carbon.2025.121215

Raul D. Rodriguez , Pavel Bakholdin , Tuan-Hoang Tran , Elizaveta Dogadina , Dmitry Cheshev , Dmitry Kogolev , Maxim Fatkullin , Jin-Ju Chen , Tian Ma , Shuang Li , Chong Cheng , Evgeniya Sheremet

Conventional fabrication of integrated carbon electronics often requires material deposition or transfer, which inevitably leads to surface contamination and structural defects. Here, we present a monolithic “Write-Rewrite-Direct” approach for in situ sequential programming of carbon's optical, electrical, and chemical properties from a single parent graphite crystal, overcoming the challenges of material transfer. First, we introduce Catalyst-Enhanced Electrochemical Lithography (CEEL), an acid-free route that exploits MoS₂ electrocatalysis to "write" atomically smooth epitaxy-like graphene oxide (GO) directly onto graphite. In contrast to conventional electrochemical oxidation of graphite, which yields rough surfaces, CEEL produces mechanically robust, vivid photonic structures with intense structural colors. We validate this monolithic integration by fabricating the first all-carbon field-effect transistor with a vertical gate-dielectric-channel configuration, without any lithographic patterning of contacts or lift-off processes. Second, we "rewrite" these films with a tightly focused laser to produce laser-reduced graphene oxide (LrGO) vertical interconnects. This enables us to draw all-carbon free-form, high-resolution LrGO circuits within the larger, electrochemically defined GO structure. Finally, we exploit this hierarchical control to "direct" the selective assembly of plasmonic nanostructures onto the LrGO patterns, integrating plasmonic microreactors and chemical sensing capabilities. This "Write-Rewrite-Direct" paradigm is a potential enabler of next-generation all-carbon electronics, offering a maskless route to creating dynamic, reconfigurable surfaces, including field-effect transistors and advanced sensing and photocatalytic platforms monolithically integrated in a single device.

传统的集成碳电子制造通常需要材料沉积或转移，这不可避免地导致表面污染和结构缺陷。在这里，我们提出了一种单片“Write-Rewrite-Direct”方法，用于从单母石墨晶体中对碳的光学、电学和化学性质进行原位顺序编程，克服了材料转移的挑战。首先，我们介绍了催化剂增强电化学光刻技术（CEEL），这是一种利用二硫化钼电催化将原子光滑的外延状氧化石墨烯（GO）直接“写入”石墨上的无酸路线。传统的石墨电化学氧化产生粗糙的表面，与之相反，CEEL产生具有强烈结构颜色的机械坚固，生动的光子结构。我们通过制造第一个具有垂直栅极-介电通道结构的全碳场效应晶体管来验证这种单片集成，没有任何触点的光刻图案或提升过程。其次，我们用紧密聚焦的激光“重写”这些薄膜，以产生激光还原氧化石墨烯（LrGO）垂直互连。这使我们能够在更大的电化学定义的氧化石墨烯结构中绘制全碳自由形式、高分辨率的低氧化石墨烯电路。最后，我们利用这种层次控制来“指导”等离子体纳米结构在lgo模式上的选择性组装，整合等离子体微反应器和化学传感能力。这种“Write-Rewrite-Direct”模式是下一代全碳电子产品的潜在推动者，它提供了一种无掩膜的方法来创建动态的、可重构的表面，包括将场效应晶体管、先进的传感和光催化平台单片集成在单个设备中。

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引用次数: 0

Concentration-dependent multicolor and photo-responsive dynamic fluorescent carbon dots for recyclable dynamic information encoding 用于可回收动态信息编码的浓度依赖多色光响应动态荧光碳点

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-27 DOI: 10.1016/j.carbon.2025.121210

Jianye Zhang , Qiang Fu , Zhimeng Ma , Mingbo Yue

Carbon dots (CDs), as a novel class of fluorescent carbon nanomaterials, demonstrate significant potential in information storage and encryption applications owing to their exceptional optical properties. The development of tunable fluorescence and time-dependent dynamic fluorescence holds promise for significantly enhancing the security level of information storage. However, integrating these outstanding properties into CDs based luminescent materials remains a challenge. In this study, we developed a composite system based on naphthalimide-functionalized CDs and triethanolamine, achieving the integration of concentration-dependent photo-responsive multicolor fluorescence (after continuous ultraviolet irradiation for 6–300 s, the photo-responsive fluorescence color exhibits a red-to-green (650–540 nm) tunability with the decrease of N-CDs concentration from 0.69 to 0.05 wt%) and photo-responsive dynamic fluorescence. Notably, this system also exhibits a rare dynamic fluorescence characteristic that evolves with irradiation time. The color switching is reversibly achieved through exposure to air or shaking. Research indicates that the photo-responsive fluorescence originates from radicals generated via ultraviolet induced charge transfer. The photo-responsive multicolor fluorescence and dynamic fluorescence originate from the differential superposition of the fluorescence peaks at 540, 610 and 650 nm, which are generated by the different combinations of naphthalimide radical excimers and monomers formed in the N-CDs@TEOA system under continuous UV irradiation. Based on this, we have successfully achieved recyclable dynamic information encoding through precise control of both concentration and photo-response timing, thereby significantly enhancing the security level of current information storage systems.

碳点作为一类新型的荧光碳纳米材料，由于其特殊的光学特性，在信息存储和加密方面具有巨大的应用潜力。可调荧光和随时间变化的动态荧光的发展有望显著提高信息存储的安全水平。然而，将这些优异的性能集成到基于cd的发光材料中仍然是一个挑战。在本研究中，我们开发了一种基于萘酰亚胺功能化CDs和三乙醇胺的复合体系，实现了浓度依赖性光响应多色荧光（连续紫外线照射6-300 s后，随着N-CDs浓度从0.69 wt%降低到0.05 wt%，光响应荧光颜色呈现红到绿（650-540 nm）可调性）和光响应动态荧光的集成。值得注意的是，该系统还表现出罕见的动态荧光特性，随照射时间的变化而变化。颜色转换是可逆的，通过暴露在空气中或摇晃。研究表明，光响应荧光来源于紫外线诱导电荷转移产生的自由基。光响应型多色荧光和动态荧光来源于在持续紫外照射下N-CDs@TEOA体系中形成的萘酰亚胺自由基准分子和单体的不同组合在540、610和650 nm处产生的荧光峰的差异叠加。在此基础上，我们通过对浓度和光响应时间的精确控制，成功实现了可回收的动态信息编码，从而大大提高了当前信息存储系统的安全水平。

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引用次数: 0

Poly(imine-cyanurate)-derived carbon aerogels with tunable morphology and multifunctional performance 聚亚胺-氰尿酸酯衍生的碳气凝胶，具有可调的形态和多功能性能

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-27 DOI: 10.1016/j.carbon.2025.121211

Christos Pantazidis , Winnie Kong , Antoni Forner-Cuenca , Željko Tomović

Carbon aerogels are highly porous, lightweight materials valued for their tunable structure, chemical versatility, and multifunctional performance. The combination of high surface area, thermal stability, and heteroatom doping potential makes them suitable for applications ranging from thermal insulation to energy storage and catalysis. In this work, we report the synthesis of heteroatom-containing carbon aerogels derived from aromatic poly(imine-cyanurate) networks via a sol-gel process followed by pyrolysis. Three distinct imine-based precursor systems were designed to yield aerogels with comparable macroscopic characteristics but differing nanostructures. Upon carbonization at temperatures ranging from 500 to 1100 °C, the resulting carbon aerogels exhibited low bulk densities (183–496 mg cm⁻³), high porosity (76–90 %), and tunable surface areas up to 540 m² g⁻¹. Their versatility was demonstrated by evaluating them in two application areas: thermal insulation and electrochemical energy storage. The aerogels displayed thermal conductivities as low as 20.4 mW m⁻¹ K⁻¹, along with flame resistance and mechanical robustness. Electrochemical analysis further revealed promising capacitance behavior, with specific electrochemical double layer capacitance values that, in some cases, surpassed those of commercial carbon black (Vulcan XC-72R). These results underscore the potential of aromatic poly(imine-cyanurate)-derived carbon aerogels as a versatile platform for application-driven materials design.

碳气凝胶是一种多孔、轻质的材料，具有可调的结构、化学通用性和多功能性能。高表面积、热稳定性和杂原子掺杂潜力的结合使它们适用于从隔热到储能和催化的各种应用。在这项工作中，我们报道了由芳香族聚亚胺-氰脲酸酯网络通过溶胶-凝胶法和热解法合成含杂原子的碳气凝胶。设计了三种不同的亚胺前驱体体系，以产生具有相似宏观特征但不同纳米结构的气凝胶。在500 ~ 1100℃的炭化温度下，得到的碳气凝胶具有低堆积密度（183 ~ 496 mg cm−3）、高孔隙率（76 ~ 90%）和可调表面积高达540 m2 g−1的特性。通过对它们在隔热和电化学储能两个应用领域的评价，证明了它们的多功能性。气凝胶的热导率低至20.4 mW m−1 K−1，具有阻燃性和机械稳定性。电化学分析进一步揭示了有希望的电容行为，在某些情况下，特定的电化学双层电容值超过了商用炭黑（Vulcan XC-72R）。这些结果强调了芳香族聚亚胺-氰脲酸酯衍生碳气凝胶作为应用驱动材料设计的通用平台的潜力。

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引用次数: 0

Spent graphite-enabled fast-charging molten salt aluminum battery 废石墨快速充电熔盐铝电池

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-27 DOI: 10.1016/j.carbon.2025.121209

Zhenhang Zhong , Lingyan Zhao , Yuan Feng , Qing He , Jinghui Chen , Shanshan Song , Xuanpeng Wang , Zhenjun Song , Jiashen Meng

The increasing consumption of lithium-ion batteries (LIBs) has intensified the need to recycle spent graphite (SG) anodes. Conventional regeneration methods are complex, energy-intensive, and environmentally burdened. Here, we demonstrate a direct and efficient strategy to repurpose SG as a high-performance cathode material for molten salt aluminum batteries. Owing to its naturally expanded interlayer spacing and defect-rich structure formed during prior LIB cycling, SG provides strain-tolerant pathways for the rapid intercalation of bulky AlCl₄⁻ anions, enabling intrinsic fast-charging capability. At 120 °C, the SG delivers a reversible capacity of 94.5 mAh g⁻¹ after 900 cycles at 1 A g⁻¹ and maintains stable operation for 5000 cycles at 10 A g⁻¹. Electrochemical impedance spectroscopy coupled with distribution of relaxation times (DRT) analysis reveals reduced diffusion polarization and stable charge-transfer resistance, confirming the enhanced ion-transport kinetics afforded by the SG structure. This work provides a scalable and sustainable route for direct SG reuse and offers new insights into defect-assisted fast-charging mechanisms in advanced aluminum-ion batteries.

锂离子电池（LIBs）消耗量的增加，加剧了回收废石墨（SG）阳极的需求。传统的再生方法复杂、能源密集、环境负担重。在这里，我们展示了一种直接而有效的策略，将SG重新用作熔盐铝电池的高性能正极材料。由于其自然扩大的层间距和先前LIB循环形成的富含缺陷的结构，SG为大体积AlCl4−阴离子的快速插入提供了应变耐受途径，从而实现了固有的快速充电能力。在120°C时，SG在1 a g−1下循环900次后可提供94.5 mAh g−1的可逆容量，并在10 a g−1下保持5000次稳定运行。电化学阻抗谱结合弛豫时间分布（DRT）分析表明，SG结构的扩散极化降低，电荷转移电阻稳定，证实了SG结构增强了离子传输动力学。这项工作为SG的直接再利用提供了一种可扩展和可持续的途径，并为先进铝离子电池的缺陷辅助快速充电机制提供了新的见解。

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引用次数: 0

Bionic hierarchical porous carbon fibers with honeycomb-like skeleton and surface cactus-spine-like hollow nanotubes for high-performance electromagnetic wave absorption 具有蜂窝状骨架和表面仙人掌状空心纳米管的仿生分层多孔碳纤维，用于高性能电磁波吸收

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-27 DOI: 10.1016/j.carbon.2025.121213

Huan Yang , Wen-qi Cui , Xing-hai Zhou , Shui-yuan He , Zhi Jia , Jia-hao Sun , Shang-ru Zhai , Yong-fang Qian , Yuan Gao , Gang Wang , Li-hua Lyu , Hong-zhu Liu , Zhong-gang Wang

To address the escalating electromagnetic wave (EMW) pollution, the development of advanced absorbers with lightweight property, broad bandwidth, and strong attenuation capabilities is urgently required. This study fabricates bionic hierarchical porous carbon fiber (HPCF) featuring a honeycomb-like skeleton and surface cactus-spine-like hollow nanotubes for high-performance electromagnetic wave absorption (EMWA). The HPCF is synthesized via an integrated process combining electro-blowing spinning, hydrothermal reaction, and carbonization technique. The honeycomb-like skeleton of the porous carbon fiber forms an electrically conductive network, enhancing conductive loss. The surface cactus-spine-like hollow nanotubes create abundant interfaces and sharp conductive tips, promoting interfacial and dipole polarization loss. The synergistic honeycomb-like/cactus-spine-like structure offers a large specific surface area and high porosity, which not only facilitates multiple reflection/scattering to dissipate EMW energy, but also traps high volume fraction of air to improve impedance matching. Notably, at a low filler loading of 15 wt% and a thin thickness of 1.5 mm, the optimized HPCF_-2 achieves an ultra-strong reflection loss (RL) of −55.35 dB, and an effective absorption bandwidth (EAB, RL < −10 dB) of 3.80 GHz. This work presents a bionic strategy for developing lightweight, broadband, and high-efficiency absorbers for next-generation stealth and shielding applications.

为了解决日益严重的电磁波污染问题，迫切需要开发轻量、宽带宽、强衰减能力的先进吸收材料。本研究制备了具有蜂窝状骨架和表面仙人掌状空心纳米管的仿生分层多孔碳纤维（HPCF），用于高性能电磁波吸收。采用电吹纺丝、水热反应和炭化技术相结合的综合工艺合成了高性能聚苯乙烯纤维。多孔碳纤维的蜂窝状骨架形成导电网络，增加导电损耗。表面仙人掌状中空纳米管形成丰富的界面和锋利的导电尖端，促进界面和偶极子极化损耗。蜂窝状/仙人掌状的协同结构提供了大的比表面积和高孔隙率，不仅有利于多次反射/散射以耗散EMW能量，而且还能捕获高体积分数的空气以改善阻抗匹配。值得注意的是，优化后的HPCF-2在低填充量为15 wt%、薄厚度为1.5 mm的情况下，实现了−55.35 dB的超强反射损耗（RL）和3.80 GHz的有效吸收带宽（EAB, RL <−10 dB）。这项工作提出了一种仿生学策略，用于开发用于下一代隐身和屏蔽应用的轻质、宽带和高效吸收器。

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引用次数: 0

sp-carbon-mediated 2D/quasi-2D interfacial hybridization for stable sodium-ion storage sp-碳介导的二维/准二维界面杂化用于钠离子的稳定储存

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-26 DOI: 10.1016/j.carbon.2025.121208

Zicheng Zuo , Xiaoya Gao , Shining Zhang , Zhe Chen , Yuanyuan Zhang

Conversion-type transition metal sulfides are promising cathode materials for sodium-ion batteries. However, their practical deployment is severely limited by structural and interfacial degradation resulting from irregular three-dimensional volume changes, which lead to poor reaction kinetics and cycling stability. Confining such irregular 3D volume variations to a controllable low dimension is a more viable approach to addressing such fundamental challenges. In this work, we constructed a sp-carbon-mediated 2D/quasi-2D heterojunction by integrating graphdiyne (GDY) with quasi-2D NiCo₂S₄ nanosheets. This configuration facilitates the formation of a 2D built-in electric field and shortens the ion diffusion distance, thereby enhancing interfacial charge transfer and boosting reaction kinetics. The well-defined 2D interfacial hybridization leverages the exceptional mechanical stability and excellent ion/electron transport properties of GDY. The synergy effect among physical confinement, chemical interaction, and ion-selective transport within this structure significantly enhances the electrode's structural and interfacial stability. As a result, the NiCo₂S₄ cathode achieves a remarkable energy density high up to 770 Wh kg ⁻¹ along with robust long-term cycling performance. Besides, these findings offer valuable insights into tackling the challenges associated with large-volume-expansion electrodes.

转换型过渡金属硫化物是一种很有前途的钠离子电池正极材料。然而，由于不规则的三维体积变化导致的结构和界面降解严重限制了它们的实际应用，从而导致反应动力学和循环稳定性差。将这种不规则的3D体积变化限制在可控的低维度是解决这些基本挑战的更可行的方法。在这项工作中，我们通过将石墨炔（GDY）与准2D NiCo2S4纳米片集成，构建了sp-碳介导的2D/准2D异质结。这种构型有利于形成二维内嵌电场，缩短离子扩散距离，从而增强界面电荷转移，提高反应动力学。良好定义的二维界面杂化利用了GDY优异的机械稳定性和优异的离子/电子传输特性。该结构中物理约束、化学相互作用和离子选择性输运之间的协同效应显著提高了电极的结构和界面稳定性。因此，NiCo2S4阴极的能量密度高达770 Wh kg−1，并且具有强大的长期循环性能。此外，这些发现为解决与大体积膨胀电极相关的挑战提供了有价值的见解。

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引用次数: 0

Unlocking multi-stage corrosion protection in zinc-rich epoxy coatings via HEDP-modified graphene/polyaniline: Synchronous activation of zinc and barrier enhancement 通过hedp改性石墨烯/聚苯胺实现富锌环氧涂料的多级防腐：锌的同步活化和屏障增强

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-26 DOI: 10.1016/j.carbon.2025.121207

Can Su, Xifeng Xia, Haiyan Jing, Peng Zhao, Junjie Shu, Boyuan Liu, Wu Lei, Mingzhu Xia, Qingli Hao

The conductive fillers have been widely studied as the conductive network between zinc particles to directly improve its active corrosion protection in zinc-rich epoxy coating technology. However, the inevitable formation of products with poor conductivity on zinc surface caused by corrosion reaction, still seriously leads to low expenditure of zinc and further impedes the protection of steel substrate. Herein, we introduced a novel corrosion inhibitor of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) into conductive filler, which could effectively trap the Zn²⁺ during corrosion and thus mitigate the byproduct formation on zinc surface. The experimental results strongly confirmed that the HEDP-containing conductive filler significantly improved the coating corrosion protection behavior and retarded the corrosion products formation under 70 days immersion in 3.5 wt% NaCl solution. Besides, the density functional theory (DFT) calculation revealed that the Zn²⁺ formed during corrosion could be immediately combined with the HEDP from conductive filler rather than OH⁻ from corrosion solution, further proving the superiority of HEDP introduction. This work provides guidelines to effectively improve the zinc utilization on rationally designed conductive fillers for zinc-rich epoxy coating.

在富锌环氧涂料中，导电填料作为锌颗粒之间的导电网络，直接提高其活性防腐性能，得到了广泛的研究。然而，由于腐蚀反应，锌表面不可避免地形成导电性差的产物，仍然严重导致锌的低消耗，进一步阻碍了钢基体的保护。本文在导电填料中引入了一种新型的缓蚀剂-1 -羟乙基二膦酸（HEDP），该缓蚀剂可以在腐蚀过程中有效地捕获Zn2+，从而减少锌表面副产物的生成。实验结果有力地证实，在3.5 wt% NaCl溶液中浸泡70 d后，含hedp的导电填料显著提高了涂层的防腐性能，延缓了腐蚀产物的形成。此外，密度泛函理论（DFT）计算表明，腐蚀过程中形成的Zn2+可以立即与导电填料的HEDP结合，而不是与腐蚀溶液中的OH -结合，进一步证明了引入HEDP的优越性。为合理设计富锌环氧涂料导电填料，有效提高锌的利用率提供了指导。

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引用次数: 0

Benzenetricarboxylic acid assisted-air blowing oxidation on the efficient preparation of flexible coal tar pitch/polyacrylonitrile carbon nanofibers 苯三羧酸辅助吹风氧化制备柔性煤焦油沥青/聚丙烯腈碳纳米纤维的研究

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-26 DOI: 10.1016/j.carbon.2025.121206

Yiting He , Tao Yang , Yan Song , Ning Zhao , Xiaodong Tian , Zhanjun Liu

Flexible electrospun carbon nanofibers (CF) have been successfully fabricated from coal tar pitch (CTP). The incorporation of benzenetricarboxylic acid (BTC) induces profound structural evolution in the resulting CF, exhibiting expanded interlayer spacing, increased structural disorder, hierarchical porous architectures and excellent flexibility. This precise structural control is achieved through a novel BTC-assisted air-blowing oxidation strategy, which effectively addresses the inherent challenges of CTP's low reactivity and slow oxygen diffusion kinetics. Systematic investigation reveals that BTC, by effectively lowering the activation energy of the oxidation reaction, not only promotes the formation of stable oxygen-bridged and methylene-bridged bonds among CTP molecules but also facilitates the cyclization of the electrospinning assistant, polyacrylonitrile (PAN), into thermostable ladder structures at a relatively lower temperature, thereby tailoring the subsequent carbonization behavior and the architecture of the resulting CF. The work reveals the promotion mechanism of BTC and provides an efficient methodology for the rapid synthesis of high-performance flexible carbon materials.

以煤焦油沥青（CTP）为原料，成功制备了柔性电纺碳纳米纤维（CF）。苯三羧酸（BTC）的掺入导致CF的结构发生了深刻的变化，表现出层间间距扩大、结构无序性增加、分层多孔结构和优异的柔韧性。这种精确的结构控制是通过一种新颖的btc辅助吹气氧化策略实现的，该策略有效地解决了CTP低反应性和慢氧扩散动力学的固有挑战。系统研究表明，BTC通过有效降低氧化反应的活化能，不仅促进了CTP分子间形成稳定的氧桥键和亚桥键，而且有利于静电纺丝助剂聚丙烯腈（PAN）在相对较低的温度下环化成热稳定的阶梯结构。该研究揭示了BTC的促进机制，并为高性能柔性碳材料的快速合成提供了一种有效的方法。

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引用次数: 0

Carbon最新文献