Carbon Letters最新文献

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Optimized interfacial integrity in CNTFI/CNTs-Cu composites for enhanced electromechanical and joule heating performance 优化了CNTFI/CNTs-Cu复合材料的界面完整性,增强了机电和焦耳加热性能
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-09-22 DOI: 10.1007/s42823-026-01130-6
Akhtar Iqbal, Muhammad Ilyas Khan, Amir Ali Khan, Zhen Luo
{"title":"Optimized interfacial integrity in CNTFI/CNTs-Cu composites for enhanced electromechanical and joule heating performance","authors":"Akhtar Iqbal,&nbsp;Muhammad Ilyas Khan,&nbsp;Amir Ali Khan,&nbsp;Zhen Luo","doi":"10.1007/s42823-026-01130-6","DOIUrl":"10.1007/s42823-026-01130-6","url":null,"abstract":"<div><p>Fractured carbon nanotube fibers (CNTFs) often suffer from poor electrical and mechanical performance after damage, limiting their use in current-carrying and Joule heating applications. CNTF composites are particularly well suited for Joule heating based on their high thermal stability, electrical properties, high current density. In this work, CNTF joints reinforced with CNT-Cu bilayer structures were successfully fabricated to restore and improve their functional properties. CNTFI/CNT joints were first prepared through electrothermal-induced solvent evaporation (EISE), followed by Cu deposition using a meniscus-confined electrochemical deposition (MECD) process to produce CNTFI/(CNTs-Cu) joints. Microstructural characterization confirmed uniform CNT distribution and successful Cu incorporation at the joint interface. Statistical analysis of electrical measurements confirms that the CNT/Cu bilayer architecture significantly improves conductivity, reducing the average resistance from 34.0 ± 1.7 Ω for pristine CF to 18.0 ± 0.50 Ω (for n= 4) in engineered joints, with excellent reproducibility. Statistical thermal analysis confirmed enhanced stability after Cu deposition, with weight loss values of 21.7 ± 0.2%, 36.2 ± 0.3%, 40.2 ± 0.6%, and 48.9 ± 0.4% for pristine fiber, CNTFI/(CNTs-Cu)<sub>1</sub>, CNTFI/(CNTs-Cu)<sub>2</sub>, and CNTFI/(CNTs-Cu)<sub>3</sub>, respectively. The CNTFI/(CNTs-Cu)<sub>3</sub> sample exhibited superior thermal resistance due to its dense Cu coating. Mechanical testing further revealed improved tensile strength, ductility, and toughness, while statistical analysis confirms highly consistent strain 6.9%± 0.035% (n = 4) and moderate stress variability 118.0 MPa±1.23 Mpa (for n = 4), indicating good reproducibility with acceptable dispersion in mechanical performance.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2417 - 2435"},"PeriodicalIF":6.2,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Transforming rubber fruit shell waste into activated carbon for supercapacitor via two-step activation routes 通过两步活化途径将橡胶果壳废弃物转化为超级电容器用活性炭
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-09-07 DOI: 10.1007/s42823-026-01134-2
Awitdrus Awitdrus, Siti Rahma Daulay, Rakhmawati Farma, Lazuardi Umar, Agustino Agustino
{"title":"Transforming rubber fruit shell waste into activated carbon for supercapacitor via two-step activation routes","authors":"Awitdrus Awitdrus,&nbsp;Siti Rahma Daulay,&nbsp;Rakhmawati Farma,&nbsp;Lazuardi Umar,&nbsp;Agustino Agustino","doi":"10.1007/s42823-026-01134-2","DOIUrl":"10.1007/s42823-026-01134-2","url":null,"abstract":"<div><p>Herein, we demonstrate an efficient valorization of rubber fruit shell waste (RFSW) as an abundant agricultural byproduct into activated carbon (AC) through a sequential multi-step KOH/CO<sub>2</sub> activation. The RFSW-700 sample (synthesized at 700 °C) exhibits a large specific surface area exceeding 494 m<sup>2</sup>/g, high carbon content, a predominantly disordered carbon framework, and high proportion of graphitic ordering. The RFSW-700 achieves a specific capacitance of 229 F/g and delivers an energy density of 7.52 Wh/kg. The RFSW-700 electrode retains 88.8% of its capacitance, with an exceptional Coulombic efficiency of 98.5% after 6,000 GCD cycles. These findings demonstrate the superior prospects of RFSW-derived BAC as a less expensive and environmentally responsible electrode for high-performance symmetrical supercapacitors, offering a scalable pathway to convert lignocellulosic waste into advanced energy storage.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2407 - 2416"},"PeriodicalIF":6.2,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Microstructure and sputtering properties of graphite, disordered, and isotopically enriched carbon 石墨、无序碳和同位素富集碳的微观结构和溅射性能
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-26 DOI: 10.1007/s42823-026-01129-z
Sean A. Clark, Joshua L. Rovey
{"title":"Microstructure and sputtering properties of graphite, disordered, and isotopically enriched carbon","authors":"Sean A. Clark,&nbsp;Joshua L. Rovey","doi":"10.1007/s42823-026-01129-z","DOIUrl":"10.1007/s42823-026-01129-z","url":null,"abstract":"<div><p>During ground testing of electric propulsion (EP) thrusters, carbon sputtered from both thruster components and facility surfaces redeposits on thruster surfaces, obscuring erosion measurements and complicating lifetime predictions. One possible approach to differentiate thruster and facility carbon is to use <span>(^{13})</span>C as an isotopic tracer. This work presents the synthesis and characterization of a bulk hard carbon enriched in <span>(^{13})</span>C (<span>(^{13})</span>C/C <span>(approx)</span> 90%). Isotopic composition measurements made with both bulk elemental analyzer isotope-ratio mass spectrometry and surface time-of-flight secondary ion mass spectrometry agree to within ± 3.3%. Microstructure and sputtering properties of the <span>(^{13})</span>C material were compared with a highly disordered <span>(^{12})</span>C material and polycrystalline high-density graphite. Raman spectroscopy confirmed a clear hierarchy of structural disorder across the three materials, with D-to-G band intensity ratios of 0.3, 1.25, and 1.35 for HDG, <span>(^{13})</span>C, and <span>(^{12})</span>C, respectively. Krypton-ion total sputter yields of all three materials were determined from mass loss measurements following simultaneous ion bombardment under nominally identical conditions. The yields of the three materials were statistically indistinguishable within this single experiment, and the absolute yield was 0.109 ± 0.003 atoms/ion, in reasonable agreement with literature. These results establish isotopically enriched hard carbon as a surrogate sputtering source for graphite with respect to total sputter yield under the conditions investigated.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2347 - 2366"},"PeriodicalIF":6.2,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42823-026-01129-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent advances in carbon nitride photocatalysts for multi-phase organic pollutant degradation 氮化碳光催化剂多相降解有机污染物的研究进展
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-24 DOI: 10.1007/s42823-026-01127-1
Bogyeong Kim, Ali Anus, Sungjin Park
{"title":"Recent advances in carbon nitride photocatalysts for multi-phase organic pollutant degradation","authors":"Bogyeong Kim,&nbsp;Ali Anus,&nbsp;Sungjin Park","doi":"10.1007/s42823-026-01127-1","DOIUrl":"10.1007/s42823-026-01127-1","url":null,"abstract":"<div><p>Along with industrial development, various organic pollutants are accumulating within the global ecosystems, and their emissions are continuously increasing. Accordingly, research and technological development are actively progressing to decompose/convert organic pollutants using sustainable and energy-efficient methods. Carbon nitride-based photocatalysts are receiving attention for their excellent organic pollutant removal efficiency under mild conditions, solar energy utilization, high chemical stability in various conditions, and reactive oxygen species generation capabilities. However, their photocatalytic performance can vary considerably depending on the type of reaction system (aqueous, gas-phase, or solid-phase), because mass transfer, catalyst–pollutant interactions, and reaction pathways differ according to the reaction environment and the physicochemical properties of the pollutants. This review summarizes the key factors that influence the photocatalytic decomposition of organic pollutants present in various phases and the recent research trends of carbon nitride-based photocatalysts for performance improvement along with their modification strategies.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2001 - 2040"},"PeriodicalIF":6.2,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Can batteries be fully sustainable? 电池是完全可持续的吗?
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-20 DOI: 10.1007/s42823-026-01126-2
Oluwasegun Emmanuel Ojodun, Jianwei Ren
{"title":"Can batteries be fully sustainable?","authors":"Oluwasegun Emmanuel Ojodun,&nbsp;Jianwei Ren","doi":"10.1007/s42823-026-01126-2","DOIUrl":"10.1007/s42823-026-01126-2","url":null,"abstract":"<div><p>Concerns over the environmental impact, supply chain vulnerability, and long-term availability of conventional lithium-ion battery (LIB) materials have intensified interest in sustainable alternatives. This review defines a fully sustainable battery as one in which all components are derived from renewable materials and produced through eco-friendly processes across their entire lifecycle, consistent with the ISO 14044:2006 LCA framework. The current state of partially sustainable batteries is evaluated against this definition through a critical review of recent advances in biomass-derived carbon anodes, organic cathode materials, biopolymer gel electrolytes, cellulose-based separators, bio-derived binders, and carbonaceous current collectors across lithium-ion, sodium-ion (SIB), and aqueous zinc-ion (ZIB) battery chemistries. Key findings include the cost and carbon footprint competitiveness of biomass-derived hard carbon anodes with synthetic graphite ($1.72 kg<sup>−1</sup> vs $4.97 kg<sup>−1</sup>; 3.2 vs 25.1 kg CO₂-eq kg<sup>−1</sup>), the ionic conductivity competitiveness of biopolymer gel electrolytes with conventional liquid electrolytes (up to 11 mS cm<sup>−1</sup>), and the consistent superiority of cellulose-based separators over commercial polypropylene in thermal stability, electrolyte wettability, and biodegradability. This review makes an original contribution by identifying four challenges that prevent the integration of these components into a fully sustainable battery. The costs, sustainability, and lifecycle assessments of LIBs, SIBs, and ZIBs are comparatively evaluated using available LCA data, and prospects for sustainable battery recycling are assessed. Based on this analysis, five research directions are proposed, with SIBs and aqueous ZIBs identified as the most viable configurations for fully sustainable batteries given their compatibility with bio-derived materials and lower lifecycle environmental impact.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2067 - 2098"},"PeriodicalIF":6.2,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42823-026-01126-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boron-driven edge loop formation in reduced graphene oxide enhances oxidative stability and electrical conductivity 硼驱动的边缘环在还原氧化石墨烯中形成,增强了氧化稳定性和导电性
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-20 DOI: 10.1007/s42823-026-01132-4
Min Kang, Sumin Ha, Seungki Hong, Jin Hee Kim, Jong Hun Han, Tomohiro Tojo, Seung Hwi Youn, Seon Yeong Noh, Yoong Ahm Kim
{"title":"Boron-driven edge loop formation in reduced graphene oxide enhances oxidative stability and electrical conductivity","authors":"Min Kang,&nbsp;Sumin Ha,&nbsp;Seungki Hong,&nbsp;Jin Hee Kim,&nbsp;Jong Hun Han,&nbsp;Tomohiro Tojo,&nbsp;Seung Hwi Youn,&nbsp;Seon Yeong Noh,&nbsp;Yoong Ahm Kim","doi":"10.1007/s42823-026-01132-4","DOIUrl":"10.1007/s42823-026-01132-4","url":null,"abstract":"<p>Boron-doped reduced graphene oxides (B-rGO) were prepared by thermally treating GO with boric acid in argon at temperatures above 1300°C. Oxidized boron species formed at low temperatures progressively converted into substitutional BC<sub>3</sub> above 1500°C, where they were incorporated into the <i>sp²</i> lattice. Boron also promoted the formation of closed-loop edge structures, thereby stabilizing high-energy open sites. Although substitutional boron atoms were incorporated into the <i>sp</i><sup><i>2</i></sup> framework, they induced localized distortions in both the lattice symmetry and the electronic environment. Accordingly, Raman spectra showed an intense D band and a suppressed G’ band, while XPS analysis revealed a reduced <i>sp</i><sup><i>2</i></sup><i>/sp</i><sup><i>3</i></sup> ratio, collectively indicating that boron functions as a defect in both optical and electronic terms. These BC<sub>3</sub> dopants, particularly at looped edges, covalently linked graphene layers, increasing both the oxidation onset temperature and domain conductivity. Although edge looping increased interparticle resistance to some extent, B-rGO samples still exhibited higher overall conductivity than undoped rGO. Theoretical simulations further supported the mechanism, showing that substitutional boron at armchair edges enhanced peroxide ion adsorption through electron transfer. In contrast, looped-edge configurations exhibited weak peroxide binding, suggesting improved oxidation resistance through the reduced edge-reactivity. Taken together, these results reveal a direct link between boron doping, edge stabilization, and functional enhancement, and provide a strategy for designing high-performance carbon materials for energy and environmental applications.</p>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2367 - 2378"},"PeriodicalIF":6.2,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Construction of porous carbon cathodes based on oxygen vacancy regulation and their enhancement of microbial fuel cells performance 基于氧空位调节的多孔碳阴极的构建及其对微生物燃料电池性能的提高
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-19 DOI: 10.1007/s42823-026-01128-0
Chenxin Wang, Cong Li, Xuan Yang, Cheng Li, Bo Wei, Zhijie Wang, Hua Liu
{"title":"Construction of porous carbon cathodes based on oxygen vacancy regulation and their enhancement of microbial fuel cells performance","authors":"Chenxin Wang,&nbsp;Cong Li,&nbsp;Xuan Yang,&nbsp;Cheng Li,&nbsp;Bo Wei,&nbsp;Zhijie Wang,&nbsp;Hua Liu","doi":"10.1007/s42823-026-01128-0","DOIUrl":"10.1007/s42823-026-01128-0","url":null,"abstract":"<div><p>This paper uses bamboo powder as the carbon source and prepares bamboo-based porous carbon through KOH activation and high-temperature carbonization. High specific surface area and rich pore structure are the basic properties of this type of material, creating favorable conditions for the introduction of oxygen vacancies. Electron paramagnetic resonance analysis confirmed that abundant oxygen vacancies were successfully introduced into the material, strengthening its adsorption and activation of oxygen, thereby effectively enhancing the oxygen reduction catalytic activity. Through wastewater testing in the laboratory, biomass porous carbon materials are used as electrodes for cathode catalysts, and its electrochemical detection reaches 234 mW m<sup>− 2</sup>, demonstrating excellent electrochemical performance. In the wastewater treatment test, the chemical oxygen demand removal rate reached 86%, and the Coulomb efficiency was 18.97%. This bamboo-based porous carbon works well as a cathode catalyst. It supports wastewater treatment and energy conversion. It offers new ideas for MFC cathode material design.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2389 - 2405"},"PeriodicalIF":6.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
In-situ nitrogen doping of vertical graphene via microwave plasma CVD on Cu foils for advanced electrochemical electrodes 利用微波等离子体气相沉积技术在铜箔上原位氮掺杂制备先进电化学电极
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-19 DOI: 10.1007/s42823-026-01131-5
Yong-il Ko, Jungtae Nam, Gil Yong Lee, Dong Yun Lee, Ji Hoon Kim, Cheol-Min Yang, Keun Soo Kim
{"title":"In-situ nitrogen doping of vertical graphene via microwave plasma CVD on Cu foils for advanced electrochemical electrodes","authors":"Yong-il Ko,&nbsp;Jungtae Nam,&nbsp;Gil Yong Lee,&nbsp;Dong Yun Lee,&nbsp;Ji Hoon Kim,&nbsp;Cheol-Min Yang,&nbsp;Keun Soo Kim","doi":"10.1007/s42823-026-01131-5","DOIUrl":"10.1007/s42823-026-01131-5","url":null,"abstract":"<div><p>Three-dimensional vertical graphene (VG) possesses a high surface area and an edge-oriented architecture, making it a promising electrode material for electrochemical energy storage applications. In this study, nitrogen-doped VG (N-VG) films were synthesized via an in-situ microwave plasma process, and the effects of nitrogen doping and Cu substrate crystallinity on the structural, chemical, and electrochemical properties of VG were systematically investigated. The growth conditions for pristine VG in a CH<sub>4</sub>–H<sub>2</sub> plasma were first optimized and used as a baseline for the nitrogen incorporation. The introduction of N<sub>2</sub> during growth preserved the vertically oriented graphene morphology while inducing distinct changes in defect characteristics and bonding configurations. Raman spectroscopy revealed progressive increases in the I<sub>D</sub>/I<sub>G</sub> and I<sub>D′</sub>/I<sub>G</sub> ratios with increasing nitrogen incorporation, indicating enhanced defect density and localized bonding perturbations within the sp<sup>2</sup> carbon lattice. X-ray photoelectron spectroscopy confirmed successful nitrogen incorporation, with graphitic (quaternary) N identified as the dominant bonding configuration. Electrochemical analyses using a PVA–H<sub>3</sub>PO<sub>4</sub> gel electrolyte demonstrated that nitrogen doping, particularly when combined with a single-crystalline Cu substrate, reduced charge-transfer resistance and enhanced the charge accumulation behavior, leading to improved electric double-layer capacitor performance with excellent cycling stability. These results elucidate the role of in-situ nitrogen doping in modulating the defect characteristics and electronic structure of VG and provide insights into the structure–electrochemical property relationships of N-VG for use as an electrode material for solid-state electric double-layer capacitors (EDLCs).</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2157 - 2168"},"PeriodicalIF":6.2,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
N/O-codoped amorphous carbon with short-range order toward high-performance supercapacitor 面向高性能超级电容器的短程有序N/ o共掺杂非晶碳
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-17 DOI: 10.1007/s42823-026-01125-3
Jingjing Yan, Muwei Liu, Chengwei Zhu, Yuqing Gao
{"title":"N/O-codoped amorphous carbon with short-range order toward high-performance supercapacitor","authors":"Jingjing Yan,&nbsp;Muwei Liu,&nbsp;Chengwei Zhu,&nbsp;Yuqing Gao","doi":"10.1007/s42823-026-01125-3","DOIUrl":"10.1007/s42823-026-01125-3","url":null,"abstract":"<div><p>Porous carbons have attracted extensive research attention as electrode materials for supercapacitors. However, an amorphous carbon structure can be generated during the intense pore formation process, which restricts the rate capability of carbon electrode. Coal, an abundant low-cost precursor with aromatic structures and graphite microdomains, is mainly used for combustion which causes pollution and coal-based carbons have drawbacks of low porosity and mismatched solvated ion/micropore size. N/O co-doping can stabilize short-range order and enhance electroactivity. Herein, N/O co-doped short-range ordered amorphous carbons (CU<sub><i>x</i>−700</sub>) were synthesized via one-step pyrolysis using anthracite as carbon source, urea as nitrogen source. By varying the added dosage of urea, the porosity, heteroatom content and short-range ordered graphitization structure of the carbon materials were regulated. The optimal CU<sub>0.2−700</sub> endowed with high graphitization (<i>I</i><sub>D</sub>/<i>I</i><sub>G</sub> = 0.96), abundant micro- and mesopores and 16.91 at% N/O doping content. It delivered 300 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup> in a three-electrode configuration using 1 M H<sub>2</sub>SO<sub>4</sub> electrolyte, and the symmetric supercapacitor achieved an energy density of 10.5 W h kg<sup>−1</sup> at 250 W kg<sup>−1</sup>. This work provides a facile strategy for regulating anthracite-based carbon structures, realizing coal high-value utilization and low-cost high-performance capacitive carbon development.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2251 - 2261"},"PeriodicalIF":6.2,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Ethanol-induced preparation of nitrogen and oxygen co-doped porous carbon nanosheets for zinc ion hybrid capacitors 乙醇诱导制备锌离子杂化电容器用氮氧共掺杂多孔碳纳米片
IF 6.2 3区 材料科学
Carbon Letters Pub Date : 2026-08-17 DOI: 10.1007/s42823-026-01122-6
Dongxue Han, Meng Liu, Tianze Tang, Mengyao Zhao, Lizhi Sheng, Chunwei Dong, Xiaoliang Wu
{"title":"Ethanol-induced preparation of nitrogen and oxygen co-doped porous carbon nanosheets for zinc ion hybrid capacitors","authors":"Dongxue Han,&nbsp;Meng Liu,&nbsp;Tianze Tang,&nbsp;Mengyao Zhao,&nbsp;Lizhi Sheng,&nbsp;Chunwei Dong,&nbsp;Xiaoliang Wu","doi":"10.1007/s42823-026-01122-6","DOIUrl":"10.1007/s42823-026-01122-6","url":null,"abstract":"<div><p>Two-dimensional (2D) porous carbon nanosheet materials possess a large specific surface area, readily accessible interface and abundant active sites, and exhibit great potential in the field of energy storage. Herein, we introduce an antisolvent precipitation strategy for creating precursors to produce 2D carbon nanosheet materials with high specific surface area. The samples without antisolvent (PC) formed a block-like porous structure, while the samples with antisolvent (NPC) formed a carbon nanosheet structure that effectively prevented structural collapse. The nitrogen and oxygen functional groups can provide some pseudocapacitance and improve wettability. Influenced by the collaborative effects, the optimized porous carbon nanosheet electrode (NPC-600) displays a specific capacitance of 420 F g<sup>−1</sup> and superior electrochemical stabilization. More importantly, the resulting Zn//ZnSO<sub>4</sub>//NPC-600 zinc-ion hybrid capacitor achieves a high reversible specific capacity of 211.66 mAh g<sup>−1</sup> and an areal capacity of 0.43 mAh cm<sup>−2</sup> at 0.1 A g<sup>−1</sup>, a high energy density of 169.33 Wh kg<sup>−1</sup>, and outstanding long-term cycling stability (10,000 cycles, 84.21% retention). These excellent results indicate that this paper provides a new strategy for constructing high-performance porous carbon nanosheets for zinc-ion hybrid capacitors.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 5","pages":"2313 - 2324"},"PeriodicalIF":6.2,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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