IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-23 DOI: 10.1016/j.carbon.2025.121157

Hao Lu , Xianchu Wang , Chenyu Wang , Qihang Wang , Jingjing Xie , Weiming Wang , Zhengyi Fu , Zhaoyong Zou

Zeolitic Imidazolate Frameworks (ZIF-8) has emerged as promising candidate for alleviating the aggregation of Fe₃N-catalysts, exhibiting significantly improved oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for rechargeable zinc-air batteries. To further improve the catalytic performance, it is crucial to fabricate ZIF-8 with hierarchically porous structures, which remains challenging due to the rapid crystallization kinetics and the weak interactions. Inspired by biological porous materials, we developed a novel method using 1,3,5-trimethylbenzene TMB as a mediating molecule to dynamically regulate the organic-inorganic interface between templates and ZIF-8 precursors, achieving the micro-meso-macropores of ZIF-8, which synergistically enhances mass transport and active site accessibility. Additionally, TMB preserves the weakly alkaline environment required for ZIFs' structural integrity by leveraging its hydrophobic co-solvent effect. The as-synthesized Fe₃N-HPZIF-8 catalyst integrates Fe₃N active sites, hierarchically porous structures, and pyrrolic-N dopants, resulting in the exceptional bifunctional activity in alkaline media (ΔE = 0.619 V), exceeding most benchmark catalysts. When integrated into zinc-air batteries, a peak power density of 205.2 mW cm⁻² is achieved. This work presents a generalizable synthetic approach for high-performance metal-air battery catalysts.

沸石咪唑盐框架（ZIF-8）是缓解fe3n催化剂聚集的有希望的候选材料，在可充电锌-空气电池中表现出显著改善氧还原反应（ORR）和析氧反应（OER）。为了进一步提高ZIF-8的催化性能，制备具有分层多孔结构的ZIF-8至关重要，但由于结晶动力学快和相互作用弱，这仍然具有挑战性。受生物多孔材料的启发，我们开发了一种新的方法，利用1,3,5-三甲基苯TMB作为中介分子，动态调节模板与ZIF-8前体之间的有机-无机界面，实现ZIF-8的微-中-大孔，协同提高质量运输和活性位点可达性。此外，TMB利用其疏水共溶剂效应，保持了zif结构完整性所需的弱碱性环境。合成的Fe3N- hpzif -8催化剂集成了Fe3N活性位点、分层多孔结构和吡喃- n掺杂剂，在碱性介质（ΔE = 0.619 V）中具有优异的双功能活性，超过了大多数基准催化剂。当集成到锌空气电池中时，峰值功率密度达到205.2 mW cm - 2。本文提出了一种高性能金属-空气电池催化剂的通用合成方法。

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引用次数: 0

Copper acetate-assisted CVD coupled with powder metallurgy for high-quality multilayer graphene-copper composites with enhanced isotropic thermal conductivity 醋酸铜辅助CVD耦合粉末冶金制备高质量多层石墨烯-铜复合材料，增强各向同性导热性

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-22 DOI: 10.1016/j.carbon.2025.121176

Guoqing Li, Jingmei Tao, Xiaofeng Chen, Yichun Liu, Caiju Li, Jianhong Yi

Efficient and reliable thermal management remains a critical challenge in advanced electronic and energy processing industries, where high heat fluxes and compact system designs necessitate materials exhibiting exceptional thermal conductivity (TC) and structural integrity. In this work, we report a novel copper acetate-assisted CVD for the synthesis of high-quality multilayer graphene (HQMG, exceeding 15 layers) directly on micron copper powders to fabricate HQMG-copper composites with well-welded interfaces and high isotropic TC. The solid-gas dual carbon supply derived from copper acetate and CH₄ suppresses powders welding of copper by generating amorphous carbon barriers, while simultaneously overcoming the self-limiting nature of copper-catalyzed graphene growth. Systematic analyses reveal that transient copper vapor catalyzes carbon precursor activation and defect healing, and that in-situ grown HQMG promotes robust copper-graphene interfacial bonding. The resulting HQMG-copper composites exhibit nearly isotropic TC (∼498 W m⁻¹K⁻¹ in-plane and ∼466 W m⁻¹K⁻¹ through-plane) with an enhancement efficiency of ∼28 % per graphene volume fraction, along with high electrical conductivity (∼96.5 %IACS). Interface study results highlight the importance of in-situ synthesis of high-quality, uniform graphene layers for constructing ideal graphene-copper composite interfaces. Beyond demonstrating a record-high thermal enhancement efficiency, this work establishes a scalable synthesis route compatible with standard powder metallurgy, offering a promising platform for compact heat exchangers, reactor internals, and thermal management components in chemical and energy systems.

在先进的电子和能源加工行业中，高效可靠的热管理仍然是一个关键的挑战，在这些行业中，高热通量和紧凑的系统设计需要具有卓越导热性（TC）和结构完整性的材料。在这项工作中，我们报告了一种新的醋酸铜辅助CVD，用于直接在微米铜粉上合成高质量多层石墨烯（HQMG，超过15层），以制备具有良好焊接界面和高各向同性TC的HQMG-铜复合材料。由醋酸铜和CH4衍生的固气双碳源通过产生非晶碳屏障抑制了铜的粉末焊接，同时克服了铜催化石墨烯生长的自限性。系统分析表明，瞬态铜蒸气催化碳前驱体活化和缺陷愈合，原位生长的HQMG促进了铜-石墨烯界面键合的稳定。所得hqmg -铜复合材料表现出几乎各向同性的TC（平面内~ 498w m−1K−1和平面内~ 466w m−1K−1），每石墨烯体积分数的增强效率为~ 28%，同时具有高导电性（IACS ~ 96.5%）。界面研究结果强调了原位合成高质量、均匀的石墨烯层对于构建理想的石墨烯-铜复合界面的重要性。除了展示创纪录的高热增强效率之外，这项工作还建立了与标准粉末冶金兼容的可扩展合成路线，为化学和能源系统中的紧凑型热交换器、反应器内部和热管理组件提供了一个有前途的平台。

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引用次数: 0

Phytic acid-polymerized carbon dots efficiently inhibit various plant pathogens growth and function as a protective agent for controlling crop diseases 植酸聚合碳点能有效抑制多种植物病原菌的生长，是防治作物病害的保护剂

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-22 DOI: 10.1016/j.carbon.2025.121179

Jian Huang , Yingying Cao , Wenyan Li , Qiushi Chen , Qing Yuan , Libo Han , Bing Zhou , Ying Zhou , Hua Shi , Hui Huang , Ya Li , Zhenhui Kang , Mo Wang

To safely control crop diseases, development and application of nanomaterials is regarded as a dominant trend in plant protection. Phytic acid (PA), the main storage form of phosphorus in crop seeds, has been widely used as an inhibitor of foodborne bacterial pathogens. However, whether PA can be developed into an anti-plant pathogens nanomaterial is unclear. Herein, to increase PA's cellular permeability, we developed PA-polymerized carbon dots (PCDs), which have an average diameter of about 3 nm and emit autofluorescence. PCDs inhibited rice blast fungus growth by targeting actin filament and depolarizing the mycelial cells. Moreover, PCDs, compared with PA, also showed high efficiency in inhibiting rice blight bacterium by disrupting the cell membrane integrity. Notably, PCDs possessed broad-spectrum antifungal and antibacterial activities, and could be applied as a protective agent to control various crop diseases. Therefore, our results provide a strategy for managing plant diseases by utilizing the PA nanomaterial.

为了安全控制作物病害，纳米材料的开发和应用被认为是植物保护的主导趋势。植酸（PA）是作物种子中磷的主要储存形式，作为食源性致病菌的抑制剂已被广泛应用。然而，PA能否发展成为抗植物病原体的纳米材料尚不清楚。为了提高PA的细胞通透性，我们开发了平均直径约为3nm的PA聚合碳点（PCDs），并发射自身荧光。PCDs通过靶向肌动蛋白丝并使菌丝细胞去极化来抑制稻瘟病菌的生长。此外，与PA相比，PCDs通过破坏细胞膜完整性对水稻枯萎菌的抑制效果更好。其中，多氯联苯具有广谱的抗真菌和抗菌活性，可作为防治多种作物病害的保护剂。因此，我们的研究结果为利用PA纳米材料管理植物病害提供了一种策略。

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引用次数: 0

Fractal-inspired negative Poisson's ratio composite honeycombs for enhanced energy absorption 增强能量吸收的分形启发负泊松比复合蜂窝

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-22 DOI: 10.1016/j.carbon.2025.121183

Menghao Ran , Shiyun Lin , Chenyun Peng , Donghang Jie , Yuhuan Du , Dagang Yin

To address the growing demand for lightweight, high-strength, and superior energy-absorbing structures in aerospace and related fields, this study designed and fabricated three types of composite honeycomb structures based on negative Poisson's ratio geometry and fractal theory: re-entrant hexagonal, bio-inspired feather-like, and conventional regular hexagonal structures. Using fused deposition modeling (FDM), compression specimens were manufactured with chopped carbon fiber-reinforced nylon as the matrix and continuous carbon fibers as reinforcement. Quasi-static compression tests and finite element simulations were conducted to systematically analyze the deformation modes and energy absorption characteristics of the three structures, while fractal dimension analysis was innovatively applied to quantitatively characterize crack propagation paths. The results demonstrate that the re-entrant hexagonal structure exhibits the most comprehensive performance, with a plateau stress of 26.87 MPa, energy absorption efficiency of 0.69, and fractal dimension of 1.4828, representing improvements of 46.4 %, 13.1 %, and 1.2 %, respectively, over the conventional hexagonal structure. These quantitative findings validate the effectiveness of combining negative Poisson's ratio design with fractal theory for evaluating energy absorption performance, providing both theoretical and experimental support for the design of high-performance energy-absorbing structures.

为满足航空航天及相关领域对轻量化、高强、高性能吸能结构日益增长的需求，本研究基于负泊松比几何和分形理论，设计并制造了三种复合材料蜂窝结构：重入六边形、仿生羽毛状和常规正六边形结构。采用熔融沉积模型（FDM），以短切碳纤维增强尼龙为基体，连续碳纤维为增强材料制备压缩试样。通过准静态压缩试验和有限元模拟，系统分析了三种结构的变形模式和能量吸收特性，创新地应用分形维数分析对裂纹扩展路径进行了定量表征。结果表明，再入式六边形结构性能最全面，平台应力为26.87 MPa，能量吸收效率为0.69，分形维数为1.4828，比常规六边形结构分别提高46.4%、13.1%和1.2%。这些定量研究结果验证了负泊松比设计与分形理论相结合评价吸能性能的有效性，为高性能吸能结构的设计提供了理论和实验支持。

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引用次数: 0

Synergistic covalent crosslinking and capillary evaporation engineering of hierarchical porous carbon for ultrahigh volumetric capacitive energy storage 分级多孔碳的协同共价交联和毛细管蒸发工程用于超高容量电容储能

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-22 DOI: 10.1016/j.carbon.2025.121203

Lan Chen , Yueqiang Lin , Wenzhe Sun , Xiaokun Wen , Yongkai Sun , Yuange Zhang , Xiangxu Qu , Lizhi Sheng , Zhuangjun Fan , Jingjie Dai

Carbon-based electrical double-layer capacitors (EDLCs) are often limited by the inherent trade-off between high porosity and high electrode density, which leads to unsatisfactory volumetric energy density. Here, a synergistic strategy was developed to fabricate high-density hierarchical porous carbons via hydrothermal crosslinking of chitosan-glucose precursors, followed by capillary-evaporation-induced densification and homogeneous KOH activation. The initial hydrothermal crosslinking establishes a robust porous carbon framework, while capillary evaporation uniformly confines the activator within the contracted pore network, promoting spatially uniform etching without collapsing the structure. Benefiting from the combined high packing density (1.12 g cm⁻³) and hierarchical micro/mesoporous architecture, the optimized carbon (HD-CPC-50) exhibits a gravimetric capacitance of 320 F g⁻¹ and an exceptional volumetric capacitance of 358.6 F cm⁻³ at a current density of 1 A g⁻¹. A symmetric supercapacitor assembled with HD-CPC-50 delivers a volumetric energy density of 14.3 Wh L⁻¹ and retains 96 % of its capacitance after 10,000 cycles. This pressing-free, template-free strategy provides a general pathway to engineer dense porous carbon electrode for compact energy storage applications.

碳基双电层电容器（edlc）通常受到高孔隙率和高电极密度之间固有权衡的限制，导致其体积能量密度令人不满意。本研究开发了一种协同策略，通过壳聚糖-葡萄糖前体水热交联，然后通过毛细管蒸发诱导致密化和均相KOH活化来制备高密度分层多孔碳。最初的水热交联建立了一个坚固的多孔碳框架，而毛细管蒸发将活化剂均匀地限制在收缩的孔隙网络中，促进了空间均匀的蚀刻而不会破坏结构。得益于高填充密度（1.12 g cm−3）和分层微孔/介孔结构，优化后的碳（HD-CPC-50）在电流密度为1 a g−1时的重量电容为320 F g−1，体积电容为358.6 F cm−3。用HD-CPC-50组装的对称超级电容器的体积能量密度为14.3 Wh L−1，在10,000次循环后保持96%的电容。这种无压力、无模板的策略为设计致密多孔碳电极提供了一种通用途径，用于紧凑的储能应用。

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引用次数: 0

Atomic-scale interface engineering to strengthen SiCf/SiC-GH4950 brazed joints via a novel NiCrCoFeWAl high-entropy filler metal 基于原子尺度界面工程的新型NiCrCoFeWAl高熵填充金属强化SiCf/SiC-GH4950钎焊接头

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-21 DOI: 10.1016/j.carbon.2025.121181

Yinchen Wang , Xiukai Chen , Zhijie Ding , Xiaoyang Bi , Hong Bian , Jun Tao , Honggang Dong , Peng Li

The hybrid joining of SiC_f/SiC composites with Ni-based superalloys like GH4950 is pivotal for next-generation aerospace engines. However, conventional brazing fillers often lead to excessive interfacial reactions and continuous brittle intermetallic compounds, compromising joint integrity. This study proposed a novel strategy of atomic-scale interface engineering using a designed NiCrCoFeWAl high-entropy filler metal to achieve a superior SiC_f/SiC-GH4950 brazed joint with a peak shear strength of 94 MPa brazed at 1220 °C for 10 min. Evolving with brazing temperature, the interfacial microstructure noted for slow interfacial reaction layer growth was precisely tailored into a multi-zone structure containing (Ni, Co)₂Si, graphite, and BCC solid solutions. Molecular dynamics (MD) simulations identified the preferential diffusion and strong interaction of Co and Ni atoms with the SiC surface, while density functional theory (DFT) calculations quantified the higher ionic character and bonding strength of Co–Si and Ni–Si bonds compared to the metallic Cr–Si bond. These findings confirmed that the high-entropy and sluggish diffusion effects synergistically promoted solid solution formation and suppressed interfacial overreaction, fundamentally enhancing interfacial bonding. This work provided a foundational framework for designing high-performance filler metals via atomic-level control for advanced ceramic-metal joining.

SiCf/SiC复合材料与ni基高温合金（如GH4950）的混合连接对于下一代航空发动机至关重要。然而，传统的钎焊填料往往导致过度的界面反应和连续的脆性金属间化合物，影响接头的完整性。本研究提出了一种新的原子尺度界面工程策略，利用设计的NiCrCoFeWAl高熵填充金属，在1220℃下钎焊10 min，获得峰值抗剪强度为94 MPa的SiCf/SiC-GH4950钎焊接头。随着钎焊温度的变化，反应层生长缓慢的界面微观结构被精确地调整为包含（Ni, Co）2Si，石墨和BCC固溶体的多区结构。分子动力学（MD）模拟发现了Co和Ni原子与SiC表面的优先扩散和强相互作用，而密度泛函理论（DFT）计算量化了Co - si和Ni - si键与金属Cr-Si键相比具有更高的离子特性和键强度。这些发现证实了高熵和缓慢扩散效应协同促进了固溶体的形成，抑制了界面过度反应，从根本上增强了界面键合。本研究为通过原子水平控制设计高性能填充金属提供了基础框架。

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引用次数: 0

Corrigendum to ‘Preparation of graphene-coated Cu particles with oxidation resistance by flash joule heating’ [Carbon 224 (2024) 119060/CARBON-D-24-00156] “通过闪蒸焦耳加热制备具有抗氧化性的石墨烯涂层铜颗粒”的勘误表[碳224(2024)119060/碳d -24-00156]

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-20 DOI: 10.1016/j.carbon.2025.121174

Congli Zhou , Fangzhu Qing , Xiao Sun , Rongxuan Wu , Haodong Wang , Qiye Wen , Xuesong Li

引用次数: 0

Corrigendum to ‘The etching effect of oxygen during the cooling process of graphene CVD synthesis’ [Carbon 230 (2024) 119654/CARBON-D-24-02949] “石墨烯CVD合成冷却过程中氧的蚀刻效应”的勘误表[Carbon 230 (2024) 119654/ Carbon - d -24-02949]

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-20 DOI: 10.1016/j.carbon.2025.121173

Changqing Shen , Fangzhu Qing , Xuesong Li

引用次数: 0

Lightweight N-doped carbon aerogels decorated with magnetic CoNi alloy particles for broadband electromagnetic wave absorption and thermal insulation 以磁性CoNi合金颗粒装饰的轻质n掺杂碳气凝胶用于宽带电磁波吸收和隔热

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-19 DOI: 10.1016/j.carbon.2025.121168

Jiang Guo , Yukun Sun , Luo Kong , Feilong Jian , Wenling Wu , Jianfeng Zhu

The development of lightweight, multi-functional, broadband and high-efficiency electromagnetic wave absorption (EWA) materials remains a major challenge at present. In this work, chitosan-derived N-doped magnetic CoNi-decorated carbon aerogels were successfully fabricated by directional freezing and subsequent carbonization process. The constructed directional porous structure and the CoNi-decorated N-doped carbon hetero-interface optimize the impedance matching by regulating polarization, conductivity and magnetic loss. This is achieved by precisely controlling the degree of graphitization and the loading of CoNi alloy particles. Meanwhile, the directional porous framework is benefit for improving multiple reflections and scattering of electromagnetic wave. Remarkably, the fabricated N-Doped carbon aerogels decorated with CoNi alloy particles (CsCN-2) displays optimal EWA performance at low density (0.067 g/cm³) with a minimum reflection loss (RL_min) value of −58.81 dB at 12.80 GHz, and a broad effective absorption bandwidth (EAB) value of 6.96 GHz at thickness of only 3.09 mm. Moreover, when the thickness is reduced to 2.85 mm, the maximum EAB can be 7.52 GHz (from 10.48 GHz to 18 GHz). In addition, the CsCN-2 carbon aerogels also achieve excellent CST simulation results and outstanding thermal insulation. This work presents a novel insight for designing multifunctional carbon aerogels with excllent EWA peroformance.

发展轻量化、多功能、宽带和高效的电磁波吸收材料仍然是当前的主要挑战。通过定向冷冻和后续碳化工艺，成功制备了壳聚糖衍生的n掺杂磁性镍修饰碳气凝胶。构建的定向多孔结构和ni修饰的n掺杂碳异质界面通过调节极化、电导率和磁损耗来优化阻抗匹配。这是通过精确控制石墨化程度和CoNi合金颗粒的加载来实现的。同时，定向多孔结构有利于改善电磁波的多次反射和散射。在低密度（0.067 g/cm3）条件下，CsCN-2具有最佳的EWA性能，在12.80 GHz时的最小反射损耗（RLmin）值为−58.81 dB，在厚度仅为3.09 mm时的有效吸收带宽（EAB）值为6.96 GHz。当厚度减小到2.85 mm时，最大EAB可达7.52 GHz（从10.48 GHz减小到18 GHz）。此外，CsCN-2碳气凝胶也取得了优异的CST模拟效果和出色的保温性能。本研究为设计具有良好EWA性能的多功能碳气凝胶提供了新的思路。

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引用次数: 0

Multidimensional aerogels achieved by internal weaving of CNTs within a biomass-derived network for multifunctional microwave absorption 通过在生物质衍生的多功能微波吸收网络内编织碳纳米管实现的多维气凝胶

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-19 DOI: 10.1016/j.carbon.2025.121175

Hengfeng Huang , Xiaopeng An , Qingze Xue , Liaochuan Zheng , Kai Nan , Yan Wang

The construction of synergistic effects through defect modulation and dimensional engineering leverages targeted charge manipulation and hierarchical interface design to dissipate electromagnetic (EM) energy, thus regulating EM wave absorption. In this study, the distinctive advantages of carbon nanotubes (CNTs) in three-dimensional (3D) extension and self-assembly are ingeniously harnessed via an in-situ catalytic pyrolysis strategy, where zero-dimensional cobalt nanoparticles (Co NPs) initiate the secondary construction of a one-dimensional interwoven network within a 3D aerogel architecture. Such an in-situ growth approach effectively prevents the agglomeration typically observed in commercial CNTs and establishes robust interfacial coupling between Co NPs and CNTs. Through the synergy of its large specific surface area, abundant heterogeneous interfaces, and defect-rich architecture, the hybrid achieves enhanced interfacial polarization and optimized spatial charge transport dynamics. Consequently, the N-CA@Co-CNTs composite achieves an exceptional minimum reflection loss of −52.4 dB at a thickness of merely 1.6 mm and an ultra-wide effective absorption bandwidth of 6.4 GHz. Furthermore, the monolithic aerogel architecture imparts exceptional structural integrity and environmental durability, broadening its potential for multifunctional applications. Collectively, this work introduces a novel design concept for high-performance EM wave absorbers, demonstrating how in situ structural regulation can effectively overcome the aggregation constraints of low-dimensional materials and offer novel perspectives for multifunctional material innovation.

通过缺陷调制和量纲工程构建协同效应，利用目标电荷操纵和分层界面设计来耗散电磁能量，从而调节电磁波吸收。在本研究中，碳纳米管（CNTs）在三维（3D）扩展和自组装方面的独特优势通过原位催化热解策略被巧妙地利用，其中零维钴纳米颗粒（Co NPs）在三维气凝胶结构中启动一维交织网络的二次构建。这种原位生长方法有效地防止了商用碳纳米管中常见的团聚现象，并在Co纳米颗粒和碳纳米管之间建立了强大的界面耦合。通过其大的比表面积、丰富的异质界面和丰富的缺陷结构的协同作用，混合材料实现了增强的界面极化和优化的空间电荷输运动力学。因此，N-CA@Co-CNTs复合材料在厚度仅为1.6 mm的情况下实现了- 52.4 dB的最小反射损耗和6.4 GHz的超宽有效吸收带宽。此外，单片气凝胶结构赋予了卓越的结构完整性和环境耐久性，扩大了其多功能应用的潜力。总的来说，这项工作为高性能电磁波吸收器引入了一种新的设计概念，展示了原位结构调节如何有效地克服低维材料的聚集限制，并为多功能材料创新提供了新的视角。

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引用次数: 0

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