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The synthesis of electrospun n-doped carbon nanofibers with embedded Fe2N/Fe3C species for catalyzing the O2 and CO2 reduction reactions
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-25 DOI: 10.1016/j.carbon.2025.120286
Xiu-zhen Lv , Xiang-xiang Xu , Meng-meng Yu , Yi-chen Wei , Jun-ying Wang , Jun-zhong Wang
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引用次数: 0
Hard carbons prepared by a salt-assisted hydrothermal method as anodes for the sodium-ion battery
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-25 DOI: 10.1016/j.carbon.2025.120287
Shuo Liu , Wei Zhou , Xue-dan Song , Chang Yu , Jie-shan Qiu
{"title":"Hard carbons prepared by a salt-assisted hydrothermal method as anodes for the sodium-ion battery","authors":"Shuo Liu , Wei Zhou , Xue-dan Song , Chang Yu , Jie-shan Qiu","doi":"10.1016/j.carbon.2025.120287","DOIUrl":"10.1016/j.carbon.2025.120287","url":null,"abstract":"","PeriodicalId":262,"journal":{"name":"Carbon","volume":"239 ","pages":"Article 120287"},"PeriodicalIF":10.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868365","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}
引用次数: 0
Tailoring the pore structure of hard carbon for better sodium-ion battery anodes
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-25 DOI: 10.1016/j.carbon.2025.120289
Ning-Jing Song , Can-liang Ma , Nan-nan Guo , Yun Zhao , Wan-xi Li , Bo-qiong Li
{"title":"Tailoring the pore structure of hard carbon for better sodium-ion battery anodes","authors":"Ning-Jing Song , Can-liang Ma , Nan-nan Guo , Yun Zhao , Wan-xi Li , Bo-qiong Li","doi":"10.1016/j.carbon.2025.120289","DOIUrl":"10.1016/j.carbon.2025.120289","url":null,"abstract":"","PeriodicalId":262,"journal":{"name":"Carbon","volume":"239 ","pages":"Article 120289"},"PeriodicalIF":10.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868367","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}
引用次数: 0
Outside Front Cover - Journal name, Cover image, Volume issue details, ISSN, Cover Date, Elsevier Logo and Society Logo if required
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-25 DOI: 10.1016/S0008-6223(25)00371-9
{"title":"Outside Front Cover - Journal name, Cover image, Volume issue details, ISSN, Cover Date, Elsevier Logo and Society Logo if required","authors":"","doi":"10.1016/S0008-6223(25)00371-9","DOIUrl":"10.1016/S0008-6223(25)00371-9","url":null,"abstract":"","PeriodicalId":262,"journal":{"name":"Carbon","volume":"239 ","pages":"Article 120355"},"PeriodicalIF":10.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870004","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}
引用次数: 0
Constructing multilevel nanostructures fiber composites for NIR/UV/X-ray multiband electromagnetic protection
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-24 DOI: 10.1016/j.carbon.2025.120351
Xin Qu , Jinqiu Ye , Yuzhe Huang , Ce Wang , Ping Hu , Rui Zhao , Yong Liu
With the growing threat of electromagnetic interference, developing lightweight and flexible multiband protection materials to shield humans from harmful electromagnetic interference is becoming particularly crucial. However, existing protection materials are bulky and designed primarily for single-band electromagnetic waves. This paper constructs bismuth/tungsten oxide/multi-walled carbon nanotube/polyacrylonitrile (Bi/WO3/MWCNTs/PAN) nanofiber composites with multilevel nanostructures through electrospinning and post-processing technology for effective NIR/UV/X-ray Multiband Electromagnetic Protection. The porous structure, combined with the strong absorption capabilities of MWCNTs for low-frequency electromagnetic waves and high photoelectric effects of high atomic number materials (Bi/WO3), synergistically achieves remarkable electromagnetic protection performance. This includes 99.6 % near-infrared shielding and 99.95 % against ultraviolet (thickness: 0.12 mm), along with 55.2 % X-ray attenuation and a mass attenuation coefficient of 13.94 cm2 g−1 at 33 keV (thickness: 1.92 mm). Light weight (0.3 g cm−3), fantastic flexibility, and moisture permeability (9.22 kg m−2 d−1) endow the material with outstanding wearable performance. In addition, Bi/WO3/MWCNTs/PAN also possesses excellent thermal insulation performance (36.96 mW m−1 K−1), temperature resistance (289.8 °C), and good electrical insulation. These exceptional performances demonstrate its enormous potential for application in electromagnetic shielding and provide new ideas for designing advanced multiband electromagnetic protection materials.
{"title":"Constructing multilevel nanostructures fiber composites for NIR/UV/X-ray multiband electromagnetic protection","authors":"Xin Qu ,&nbsp;Jinqiu Ye ,&nbsp;Yuzhe Huang ,&nbsp;Ce Wang ,&nbsp;Ping Hu ,&nbsp;Rui Zhao ,&nbsp;Yong Liu","doi":"10.1016/j.carbon.2025.120351","DOIUrl":"10.1016/j.carbon.2025.120351","url":null,"abstract":"<div><div>With the growing threat of electromagnetic interference, developing lightweight and flexible multiband protection materials to shield humans from harmful electromagnetic interference is becoming particularly crucial. However, existing protection materials are bulky and designed primarily for single-band electromagnetic waves. This paper constructs bismuth/tungsten oxide/multi-walled carbon nanotube/polyacrylonitrile (Bi/WO<sub>3</sub>/MWCNTs/PAN) nanofiber composites with multilevel nanostructures through electrospinning and post-processing technology for effective NIR/UV/X-ray Multiband Electromagnetic Protection. The porous structure, combined with the strong absorption capabilities of MWCNTs for low-frequency electromagnetic waves and high photoelectric effects of high atomic number materials (Bi/WO<sub>3</sub>), synergistically achieves remarkable electromagnetic protection performance. This includes 99.6 % near-infrared shielding and 99.95 % against ultraviolet (thickness: 0.12 mm), along with 55.2 % X-ray attenuation and a mass attenuation coefficient of 13.94 cm<sup>2</sup> g<sup>−1</sup> at 33 keV (thickness: 1.92 mm). Light weight (0.3 g cm<sup>−3</sup>), fantastic flexibility, and moisture permeability (9.22 kg m<sup>−2</sup> d<sup>−1</sup>) endow the material with outstanding wearable performance. In addition, Bi/WO<sub>3</sub>/MWCNTs/PAN also possesses excellent thermal insulation performance (36.96 mW m<sup>−1</sup> K<sup>−1</sup>), temperature resistance (289.8 °C), and good electrical insulation. These exceptional performances demonstrate its enormous potential for application in electromagnetic shielding and provide new ideas for designing advanced multiband electromagnetic protection materials.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"240 ","pages":"Article 120351"},"PeriodicalIF":10.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873529","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}
引用次数: 0
A rigid chiral nanocarbon host: are its properties perturbed by a guest?
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-23 DOI: 10.1016/j.carbon.2025.120366
Yoshifumi Hashikawa, Yasujiro Murata
The synthesis of chiral functional nanocarbons with an intense chiroptical response has been a great topic of interest. For instance, making a chiral orifice on [60]fullerene is an attractive way to access functional chiral nanocarbons since the thus-obtained chiral chromophores potentially work as hosts for certain guests. However, it has been less explored how the guests make an impact to chiral properties of the hosts. In this paper, we examined an effect of a water guest placed inside a chiral [60]fullerene host, revealing strengthened chiral recognition by sugar as well as largely perturbed electronic transitions from ground to higher-energy excited states. We also discussed significant alteration of chiroptical parameters which rely upon thermally-allowed geometrical displacement of the orifice.
{"title":"A rigid chiral nanocarbon host: are its properties perturbed by a guest?","authors":"Yoshifumi Hashikawa,&nbsp;Yasujiro Murata","doi":"10.1016/j.carbon.2025.120366","DOIUrl":"10.1016/j.carbon.2025.120366","url":null,"abstract":"<div><div>The synthesis of chiral functional nanocarbons with an intense chiroptical response has been a great topic of interest. For instance, making a chiral orifice on [60]fullerene is an attractive way to access functional chiral nanocarbons since the thus-obtained chiral chromophores potentially work as hosts for certain guests. However, it has been less explored how the guests make an impact to chiral properties of the hosts. In this paper, we examined an effect of a water guest placed inside a chiral [60]fullerene host, revealing strengthened chiral recognition by sugar as well as largely perturbed electronic transitions from ground to higher-energy excited states. We also discussed significant alteration of chiroptical parameters which rely upon thermally-allowed geometrical displacement of the orifice.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"240 ","pages":"Article 120366"},"PeriodicalIF":10.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873528","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}
引用次数: 0
LiCl modified graphene by wet ball-milling strategy for high performance lithium-ion battery
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-23 DOI: 10.1016/j.carbon.2025.120367
Wei Wu , Ranlu Zheng , Yixuan Bai , Qingyi Feng , Bo Li , Yongliang Tang , Hongxiang Deng , Xiaotao Zu , Shuangyue Wang , Xia Xiang
Graphene-based lithium-ion batteries suffer from the poor initial coulombic efficiency and low mass loading. A convenient method is proposed to replenish the Li loss in the first cycle and improve the cycling stability of high mass loading batteries simultaneously in this work. Graphene is modified by introducing LiCl (G/LC) through a wet ball-milling process, which leads to the formation of hybrid solid electrolyte interface. As a result, the half-cells based on high mass loading G/LC electrodes exhibit obviously improved initial coulombic efficiency (>90 %) and high areal specific capacity of 2.53 mAh cm−2 at high current density of 0.55 mA cm−2. Furthermore, the full-cells based on G/LC anode paired with LiNi6Mn2Co2O2 cathode deliver a high initial coulombic efficiency of 76.7 %, as well as a high-capacity retention of 97.52 % after 200 cycles, suggesting the potential application of this extend strategy for rechargeable batteries.
{"title":"LiCl modified graphene by wet ball-milling strategy for high performance lithium-ion battery","authors":"Wei Wu ,&nbsp;Ranlu Zheng ,&nbsp;Yixuan Bai ,&nbsp;Qingyi Feng ,&nbsp;Bo Li ,&nbsp;Yongliang Tang ,&nbsp;Hongxiang Deng ,&nbsp;Xiaotao Zu ,&nbsp;Shuangyue Wang ,&nbsp;Xia Xiang","doi":"10.1016/j.carbon.2025.120367","DOIUrl":"10.1016/j.carbon.2025.120367","url":null,"abstract":"<div><div>Graphene-based lithium-ion batteries suffer from the poor initial coulombic efficiency and low mass loading. A convenient method is proposed to replenish the Li loss in the first cycle and improve the cycling stability of high mass loading batteries simultaneously in this work. Graphene is modified by introducing LiCl (G/LC) through a wet ball-milling process, which leads to the formation of hybrid solid electrolyte interface. As a result, the half-cells based on high mass loading G/LC electrodes exhibit obviously improved initial coulombic efficiency (&gt;90 %) and high areal specific capacity of 2.53 mAh cm<sup>−2</sup> at high current density of 0.55 mA cm<sup>−2</sup>. Furthermore, the full-cells based on G/LC anode paired with LiNi<sub>6</sub>Mn<sub>2</sub>Co<sub>2</sub>O<sub>2</sub> cathode deliver a high initial coulombic efficiency of 76.7 %, as well as a high-capacity retention of 97.52 % after 200 cycles, suggesting the potential application of this extend strategy for rechargeable batteries.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"240 ","pages":"Article 120367"},"PeriodicalIF":10.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877489","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}
引用次数: 0
Tailorable nanoconfinement enables nacreous biomimetic graphene/silicate composites with ultrahigh strength and toughness
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-23 DOI: 10.1016/j.carbon.2025.120364
Kunkun Song , Junhong Liu , Jiaqi Dong , Yusheng Liang , Tao Du , Hengzhong Fan , Qiangqiang Zhang
The superior strength and toughness of biological tissues have provided significant motivation for synthesizing advanced structural materials, while precisely reproducing the hierarchical microstructures of biological materials remains a huge challenge. In this study, we developed a nacre-inspired toughening ceramic composite by precisely combining two brittle compounds (graphene and calcium silicate) after rationally calculating the reduced graphene oxide (rGO) backbone structure through vacuum-assisted perfusion followed by a cold pressing treatment. The calcium silicate was confined within interconnected rGO sheets, resulting in a laminate interpenetrated microstructure with flexural strength and fracture energy over 5 times higher than that of conventional calcium silicate. The biomimetic graphene/calcium silicate composite (GCSC) exhibited significantly improved flexural strength (26.39 MPa), fracture energy (121.0 N/m), fracture toughness (1.5 MPa m1/2), and Young's modulus (40 GPa). Through multiscale simulations and nanostructure characterization, the exceptional mechanical properties of GCSC stemmed from the synergistic reinforcement of rGO and confinement-induced crystallization of calcium-silicate-hydrate. The unique mechanical properties of GCSC were identified from both intrinsic (nanoconfined microcavities enhanced silicate crystals) and extrinsic (controllable graphene backbone induced crack deflection) perspectives. The nacre inspired GCSC has paved a new pathway to synthesize biomimetic laminar structure of ceramic composites that possesses high strength and toughness concurrently.
{"title":"Tailorable nanoconfinement enables nacreous biomimetic graphene/silicate composites with ultrahigh strength and toughness","authors":"Kunkun Song ,&nbsp;Junhong Liu ,&nbsp;Jiaqi Dong ,&nbsp;Yusheng Liang ,&nbsp;Tao Du ,&nbsp;Hengzhong Fan ,&nbsp;Qiangqiang Zhang","doi":"10.1016/j.carbon.2025.120364","DOIUrl":"10.1016/j.carbon.2025.120364","url":null,"abstract":"<div><div>The superior strength and toughness of biological tissues have provided significant motivation for synthesizing advanced structural materials, while precisely reproducing the hierarchical microstructures of biological materials remains a huge challenge. In this study, we developed a nacre-inspired toughening ceramic composite by precisely combining two brittle compounds (graphene and calcium silicate) after rationally calculating the reduced graphene oxide (rGO) backbone structure through vacuum-assisted perfusion followed by a cold pressing treatment. The calcium silicate was confined within interconnected rGO sheets, resulting in a laminate interpenetrated microstructure with flexural strength and fracture energy over 5 times higher than that of conventional calcium silicate. The biomimetic graphene/calcium silicate composite (GCSC) exhibited significantly improved flexural strength (26.39 MPa), fracture energy (121.0 N/m), fracture toughness (1.5 MPa m<sup>1/2</sup>), and Young's modulus (40 GPa). Through multiscale simulations and nanostructure characterization, the exceptional mechanical properties of GCSC stemmed from the synergistic reinforcement of rGO and confinement-induced crystallization of calcium-silicate-hydrate. The unique mechanical properties of GCSC were identified from both intrinsic (nanoconfined microcavities enhanced silicate crystals) and extrinsic (controllable graphene backbone induced crack deflection) perspectives. The nacre inspired GCSC has paved a new pathway to synthesize biomimetic laminar structure of ceramic composites that possesses high strength and toughness concurrently.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"240 ","pages":"Article 120364"},"PeriodicalIF":10.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870838","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}
引用次数: 0
High strength, high ductility and high conductivity achieved in graphene nanosheets (GNSs)/copper alloy via laser powder bed fusion
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-22 DOI: 10.1016/j.carbon.2025.120365
Lizheng Zhang , Haopeng Sheng , Peng Dong , Yong Zeng , Wei Rao , Jimin Chen
It is a great challenge for the laser-based additive manufacturing of complex copper (Cu) alloy components with high strength and high conductivity due to the low energy absorption rate from their high optical reflectivity and thermal conductivity. In this work, the additive manufacturing Cu alloy with high strength and flexibility, and excellent conductivity was fabricated by doping CuCrZr powder with GNSs. At a GNSs addition level of 0.075 wt%, elongation, tensile strength, and thermal and electrical conductivities of Cu alloy are improved by over 40 %. To reveal the enhancement mechanism of these physical and mechanical properties, both experiment and crystal plasticity modeling were applied to investigate the microstructure and deformation behaviors of these Cu alloys. It is found that the introduction of GNSs enhances laser absorption, thereby resulting in the nucleation and growth of large amounts of slender columnar grains that boost thermal and electrical conductivities. Moreover, the addition of GNSs also induces the formation of fine and dispersed precipitates with high-density dislocation tangles, thereby leading to improved alloy strength. Additionally, increased laser absorption also affects the texture components, which significantly enhances the ductility of Cu alloys. This study demonstrates a method to achieve Cu alloys with high performances by using laser-based additive manufacturing and can promote the application of additive manufacturing of copper alloys.
{"title":"High strength, high ductility and high conductivity achieved in graphene nanosheets (GNSs)/copper alloy via laser powder bed fusion","authors":"Lizheng Zhang ,&nbsp;Haopeng Sheng ,&nbsp;Peng Dong ,&nbsp;Yong Zeng ,&nbsp;Wei Rao ,&nbsp;Jimin Chen","doi":"10.1016/j.carbon.2025.120365","DOIUrl":"10.1016/j.carbon.2025.120365","url":null,"abstract":"<div><div>It is a great challenge for the laser-based additive manufacturing of complex copper (Cu) alloy components with high strength and high conductivity due to the low energy absorption rate from their high optical reflectivity and thermal conductivity. In this work, the additive manufacturing Cu alloy with high strength and flexibility, and excellent conductivity was fabricated by doping CuCrZr powder with GNSs. At a GNSs addition level of 0.075 wt%, elongation, tensile strength, and thermal and electrical conductivities of Cu alloy are improved by over 40 %. To reveal the enhancement mechanism of these physical and mechanical properties, both experiment and crystal plasticity modeling were applied to investigate the microstructure and deformation behaviors of these Cu alloys. It is found that the introduction of GNSs enhances laser absorption, thereby resulting in the nucleation and growth of large amounts of slender columnar grains that boost thermal and electrical conductivities. Moreover, the addition of GNSs also induces the formation of fine and dispersed precipitates with high-density dislocation tangles, thereby leading to improved alloy strength. Additionally, increased laser absorption also affects the texture components, which significantly enhances the ductility of Cu alloys. This study demonstrates a method to achieve Cu alloys with high performances by using laser-based additive manufacturing and can promote the application of additive manufacturing of copper alloys.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"240 ","pages":"Article 120365"},"PeriodicalIF":10.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873527","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}
引用次数: 0
Pb single-atoms on nitrogen-doped graphene hollow spheres for electromagnetic wave absorption
IF 10.5 2区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-04-22 DOI: 10.1016/j.carbon.2025.120352
Yidan Sun , Yanan Shi , Xiao Zhang , Fenghui Cao , Letian Huang , Yujin Chen
Three-dimensional carbon-based materials have attracted significant interest due to their lightweight nature; however, controlling their morphology while maintaining lightweight characteristics when combined with other materials remains a major challenge in developing materials exhibiting superior capabilities for absorbing electromagnetic waves. In this work, graphene oxide (GO) and polystyrene spheres (PS) were used as precursors to prepare hollow N-doped graphene spheres anchored with non-planar coordination of Pb single-atoms (Pb-Nx/HCS-D). The resulting Pb-Nx/HCS-D features a unique hollow structure, exhibits exceptional electromagnetic wave (EMW) absorption properties with a minimum reflection loss (RLmin) of −47.2 dB at 1.5 mm thickness and an effective absorption bandwidth (EAB) of 4.64 GHz at 1.7 mm, with a low filler content of only 10 wt%. This superior performance originates from the non-planar coordination of single Pb atoms and the interconnected hollow carbon sphere framework, synergistically improving impedance matching and enhancing dielectric loss. This study provides an effective method for synthesizing non-planar-coordination of M − single-atoms for high-performance EMW absorption.
{"title":"Pb single-atoms on nitrogen-doped graphene hollow spheres for electromagnetic wave absorption","authors":"Yidan Sun ,&nbsp;Yanan Shi ,&nbsp;Xiao Zhang ,&nbsp;Fenghui Cao ,&nbsp;Letian Huang ,&nbsp;Yujin Chen","doi":"10.1016/j.carbon.2025.120352","DOIUrl":"10.1016/j.carbon.2025.120352","url":null,"abstract":"<div><div>Three-dimensional carbon-based materials have attracted significant interest due to their lightweight nature; however, controlling their morphology while maintaining lightweight characteristics when combined with other materials remains a major challenge in developing materials exhibiting superior capabilities for absorbing electromagnetic waves. In this work, graphene oxide (GO) and polystyrene spheres (PS) were used as precursors to prepare hollow N-doped graphene spheres anchored with non-planar coordination of Pb single-atoms (Pb-N<sub>x</sub>/HCS-D). The resulting Pb-N<sub>x</sub>/HCS-D features a unique hollow structure, exhibits exceptional electromagnetic wave (EMW) absorption properties with a minimum reflection loss (<em>RL</em><sub>min</sub>) of −47.2 dB at 1.5 mm thickness and an effective absorption bandwidth (EAB) of 4.64 GHz at 1.7 mm, with a low filler content of only 10 wt%. This superior performance originates from the non-planar coordination of single Pb atoms and the interconnected hollow carbon sphere framework, synergistically improving impedance matching and enhancing dielectric loss. This study provides an effective method for synthesizing non-planar-coordination of M − single-atoms for high-performance EMW absorption.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"240 ","pages":"Article 120352"},"PeriodicalIF":10.5,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863776","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}
引用次数: 0
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Carbon
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