Carbon Letters最新文献_第9页

Design of F-doped (text{CoS}_2@text{C}) with void structure as a high-performance anode for lithium-ion battery 含f掺杂(text{CoS}_2@text{C})多孔结构锂离子电池高性能负极的设计

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-16 DOI: 10.1007/s42823-026-01053-2

Eunseon Chae, In Woo Lee, Seongjae Myeong, Minah Kang, Bo Kyoung Kim, Tae-Sung Bae, Young-Seak Lee

{"title":"Design of F-doped (text{CoS}_2@text{C}) with void structure as a high-performance anode for lithium-ion battery","authors":"Eunseon Chae, In Woo Lee, Seongjae Myeong, Minah Kang, Bo Kyoung Kim, Tae-Sung Bae, Young-Seak Lee","doi":"10.1007/s42823-026-01053-2","DOIUrl":"10.1007/s42823-026-01053-2","url":null,"abstract":"<div>\u0000 \u0000 CoS2 is a promising anode material for lithium-ion batteries (LIBs) because of its high theoretical capacity. However, its practical application is hampered by severe volume expansion during cycling. In this study, fluorine-doped carbon-coated CoS2 (F-CoS2@C) was synthesized via NaCl template-assisted carbon coating using petroleum-derived pyrolyzed fuel oil, followed by CF4 plasma treatment. The proposed method of synthesis enables control of the carbon layer thickness, formation of a void structure, and introduction of fluorine functional groups. F–CoS2@C delivered 295 mAh/g at 5 A/g and retained 375 mAh/g after 500 cycles at 1 A/g. The enhanced electrochemical performance is attributed to the void carbon structure and fluorine-induced interfacial stabilization. The carbon structure increased electrolyte penetration and electrical conductivity, and mitigated volume changes. Fluorine doping promoted the formation of a LiF-rich solid electrolyte interphase layer and enhanced the electronic transport by semi-ionic C-F bonds. This study offers a promising strategy for the development of transition metal sulfide/carbon composites as high-performance LIB anodes.\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"1049 - 1060"},"PeriodicalIF":5.8,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752427","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

Plasma-engineered kenaf-derived hard carbon with fluorine–oxygen synergy for kib anodes 等离子体工程红麻衍生的硬碳与氟氧协同作用的钾阳极

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-16 DOI: 10.1007/s42823-026-01052-3

Seongmin Ha, Taemin Kim, SooHui Kim, Seoyeong Cheon, Young-Seak Lee, Ji Sun Im

{"title":"Plasma-engineered kenaf-derived hard carbon with fluorine–oxygen synergy for kib anodes","authors":"Seongmin Ha, Taemin Kim, SooHui Kim, Seoyeong Cheon, Young-Seak Lee, Ji Sun Im","doi":"10.1007/s42823-026-01052-3","DOIUrl":"10.1007/s42823-026-01052-3","url":null,"abstract":"<div>\u0000 \u0000 In this study, a CF₄ + O₂ dual-plasma post-treatment was employed to significantly enhance the electrochemical performance of kenaf-derived hard-carbon anodes for potassium-ion batteries (KIBs). This plasma-based post-engineering process simultaneously introduced fluorine and oxygen functionalities while reconstructing the carbon surface, thereby increasing the defect density, edge-site exposure, and microporosity. Comprehensive structural and chemical analyses confirmed that the dual-plasma treatment effectively tailored both the surface chemistry and pore architecture of hard carbon. As a result, the modified samples exhibited higher reversible capacities, improved rate capabilities, and superior cycling stability compared to the pristine counterparts. The enhanced potassium storage behavior is attributed to the synergistic effects of fluorine/oxygen co-doping, defect-rich surface reconstruction, and the formation of a stable KF-rich hybrid SEI layer during cycling. Importantly, this work demonstrates that dual-plasma modification can serve as a versatile and scalable post-treatment strategy for upgrading existing carbon anodes, offering a practical pathway toward high-performance and durable KIBs. The insights gained here can be further extended to the rational surface design of carbon anodes for other emerging rechargeable battery systems.\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1183 - 1196"},"PeriodicalIF":5.8,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985189","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-doped carbon-assisted low-temperature sulfidation: a green strategy for constructing high-performance CoNi2S4/N-doped carbon electrode for supercapacitors n掺杂碳辅助低温硫化：构建高性能CoNi2S4/ n掺杂碳超级电容器电极的绿色策略

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-16 DOI: 10.1007/s42823-026-01055-0

Yuebo Du, Na Zhang, Lirong R. Kong, Shihui Yin, GuoXing Zhu, Xiaoping P. Shen

{"title":"N-doped carbon-assisted low-temperature sulfidation: a green strategy for constructing high-performance CoNi2S4/N-doped carbon electrode for supercapacitors","authors":"Yuebo Du, Na Zhang, Lirong R. Kong, Shihui Yin, GuoXing Zhu, Xiaoping P. Shen","doi":"10.1007/s42823-026-01055-0","DOIUrl":"10.1007/s42823-026-01055-0","url":null,"abstract":"<div>\u0000 \u0000 To construct high-performance CoNi2S4/nitrogen-doped carbon (NC) electrode material with well-retained porous structure, a NC-assisted low-temperature synthetic strategy was proposed here by using inorganic sodium sulfide as the sulfuric agent. The composed NC could not only promote the sulfidation of nickel-cobalt precursor by inhibiting the formation of byproducts under low temperature, but also elevate the overall conductivity of the final composite. Owing to its high sulfidation degree and well-preserved porous structure, the as-prepared CoNi2S4/NC could deliver high specific capacitances of 1580 F g− 1 at 1 A g− 1 and 1268 F g− 1 at 20 A g− 1, as well as remarkable cycling stability of 90.63% capacitance retention after 10,000 cycles. The asymmetric supercapacitor assembled from CoNi2S4/NC positive electrode and g-CN negative electrode could achieve high energy density of 59.68 Wh kg− 1 at 788.43 W kg− 1, and a high capacitance retention of 92.85% after 10,000 cycles. This work proposes an effective low-temperature hydrothermal strategy to synthesize CoNi2S4/NC composites electrode with well-maintained porous structure, high conductivity and remarkable redox activity, which enable its superior capacitive performance in supercapacitors.\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1209 - 1221"},"PeriodicalIF":5.8,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985190","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

Sugarcane bagasse-derived biochar enables high-efficiency methylene blue separation from waste effluent 甘蔗甘蔗渣衍生的生物炭能够从废水中高效分离亚甲基蓝

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-16 DOI: 10.1007/s42823-026-01056-z

Yu Ren, Hanqi Liu, Rong Ma, Jinghu Li, Yuyun Chen

{"title":"Sugarcane bagasse-derived biochar enables high-efficiency methylene blue separation from waste effluent","authors":"Yu Ren, Hanqi Liu, Rong Ma, Jinghu Li, Yuyun Chen","doi":"10.1007/s42823-026-01056-z","DOIUrl":"10.1007/s42823-026-01056-z","url":null,"abstract":"<div>Biochar materials possess a porous structure suitable for adsorption applications. However, effective modifications are required to enhance their adsorption performance. This study developed a high-performance biochar (HBC) derived from sugarcane bagasse. Characterization by XRD, SEM, EDS, BET, XPS and FT-IR revealed that the sugarcane bagasse-derived biochar was fabricated successfully by a pyrolysis/acid-washing strategy. The acid-washing operation efficiently etched the iron-based component of biochar precursor that was previously synthesized by pyrolysis processing, promoting the achieved biochar exposing more accessible active sites that include C = O, C = C COO⁻, C-N and -OH functional groups. These functional groups significantly enhanced the adsorption capacity for MB through mechanisms including electrostatic interaction, π–π interaction, electrostatic assistance and hydrogen bonding effect. The adsorption isotherm for MB onto HBC followed the Langmuir model, while the adsorption kinetics adhered to the pseudo-second-order equation, indicating chemisorption as the dominant process. The HBC achieved a high adsorption capacity of 476.55 mg·g⁻¹ while maintaining an impressive MB removal efficiency of 95.31%. This research offers a new solution for the disposal and utilization of agricultural waste and holds significant practical importance for developing low-cost, environmentally friendly adsorbents.</div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1223 - 1235"},"PeriodicalIF":5.8,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985188","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

Enhanced broadband photodetection over plasmonic W18O49 with a Ti3C2Tx MXene electron transport layer 用Ti3C2Tx MXene电子传输层增强等离子体W18O49的宽带光探测

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-16 DOI: 10.1007/s42823-026-01057-y

Yongan Zhu, Xin Gao, Shiwen Du, Na Lu, Xuedong Jing, Wei Lu, Xiaoyi Jiang, Zhenyi Zhang

{"title":"Enhanced broadband photodetection over plasmonic W18O49 with a Ti3C2Tx MXene electron transport layer","authors":"Yongan Zhu, Xin Gao, Shiwen Du, Na Lu, Xuedong Jing, Wei Lu, Xiaoyi Jiang, Zhenyi Zhang","doi":"10.1007/s42823-026-01057-y","DOIUrl":"10.1007/s42823-026-01057-y","url":null,"abstract":"<div>\u0000 \u0000 Plasmonic W18O49 has emerged as a highly promising broadband photodetection candidate, due to its excellent ultraviolet-to-near-infrared spectral response. However, the abundant trap states and inferior carrier transport properties pose significant challenges to the fabrication of high-performance photodetectors. Herein, we demonstrate an interface engineering strategy by using conductive MXene (Ti3C2Tx) as an interfacial electron transport layer to address these critical limitations. The Ti3C2Tx interfacial layer serves as a rapid electron transport channel, efficiently extracting photogenerated electrons from W18O49 and suppressing carrier recombination at defect states on the surface. By tuning Ti3C2Tx colloidal precursor dosage to modulate the layer thickness, the optimized Ti3C2Tx/W18O49 photodetector exhibits 11.5-fold and 4.7-fold higher responsivity at 365 nm (371.88 mA/W) and 850 nm (116.57 mA/W), respectively, compared to the pure W18O49 device. Additionally, under a bias voltage of 2 V, this photodetector demonstrates remarkable responsivity (371.88, 152.32, 92.39, 83.11 and 116.57 mA/W) and high specific detectivity (1.16 × 1011, 4.14 × 1010, 2.47 × 1010, 2.44 × 1010 and 3.25 × 1010 Jones) when irradiated at different wavelengths (365, 450, 660, 730 and 850 nm). This work provides an effective interface modification strategy for plasmonic W18O49-based broadband photodetectors and a general design paradigm for other metal oxide photoelectric devices.\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1237 - 1248"},"PeriodicalIF":5.8,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985233","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

Electron transport channel-mediated Z-type α-MnO2/Cd1.7In2S4.7 heterojunction for photocatalytic conversion of 5-hydroxymethylfurfural to 2,5-dicarbonylfuran 电子传递通道介导的z型α-MnO2/Cd1.7In2S4.7异质结光催化5-羟甲基糠醛转化为2,5-二羰基呋喃

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-13 DOI: 10.1007/s42823-025-01010-5

Yuwei Liang, Yufan Huang, Chunling Hu, Jinyu Cai, Yifan Cao, Guihua Meng, Jianning Wu, Qi Li, Zhiyong Liu

{"title":"Electron transport channel-mediated Z-type α-MnO2/Cd1.7In2S4.7 heterojunction for photocatalytic conversion of 5-hydroxymethylfurfural to 2,5-dicarbonylfuran","authors":"Yuwei Liang, Yufan Huang, Chunling Hu, Jinyu Cai, Yifan Cao, Guihua Meng, Jianning Wu, Qi Li, Zhiyong Liu","doi":"10.1007/s42823-025-01010-5","DOIUrl":"10.1007/s42823-025-01010-5","url":null,"abstract":"<div>Designing catalysts with suitable valence conduction band positions to generate reactive oxygen species (ROS) with moderate redox capacity is to achieve efficient photocatalytic biomass-selective value-added oxidation. This protocol addresses the issue by tuning material structural defects, altering the surface electronic structure, and ultimately enhancing the raw material’s performance. Here, an appropriate amount of one - dimensional nanorods α-MnO2 adjusted material structural defects, increased the adsorbed oxygen (Oads)/lattice oxygen (Olatt) and Mn3+ ratios, and served as an electron transport conduit, facilitating O₂ activation to generate ROS. The Cd1.7In2S4.7 solid solution enables the optimal valence band position by adjusting the Cd2+: In3+ ratio, thus selectively oxidizing 5-hydroxymethylfurfural (HMF) to 2,5-dicarbonylfuran (DFF). In situ XPS revealed that photogenerated electrons in Cd1.7In2S4.7 quickly transferred to the conduction band of α-MnO2, and photogenerated holes from α-MnO2 moved to the valence band of Cd1.7In2S4.7. This significantly enhanced the separation and transfer efficiency of photogenerated carriers at the interface. The optimal sample achieved 56% conversion of HMF and 72% selectivity of DFF under simulated sunlight. This protocol provides a new approach for the establishment of electron transport channel structures based on α-MnO2 constructs and value-added biomass photocatalytic conversion under simulated sunlight.</div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"705 - 719"},"PeriodicalIF":5.8,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752549","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

AI-driven strategies for the design and functionalization of carbon nanotubes: a critical review 人工智能驱动的碳纳米管设计和功能化策略：综述

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-12 DOI: 10.1007/s42823-025-01001-6

Mohammad Mohammadi, Yousef Bazargan Lari, Farhang Daneshmand, Seyed Mohammad Reza Nazemosadat

{"title":"AI-driven strategies for the design and functionalization of carbon nanotubes: a critical review","authors":"Mohammad Mohammadi, Yousef Bazargan Lari, Farhang Daneshmand, Seyed Mohammad Reza Nazemosadat","doi":"10.1007/s42823-025-01001-6","DOIUrl":"10.1007/s42823-025-01001-6","url":null,"abstract":"<div>The convergence of artificial intelligence (AI) and carbon nanotube (CNT) chemistry is accelerating innovations in the synthesis, functionalization, and advanced applications of carbon-based nanomaterials. This review highlights recent AI-driven methodologies, including neural networks, ensemble learning, metaheuristics, and hybrid frameworks that are redefining the design, surface engineering, and structure–property relationships of CNTs. Special attention is given to their roles in clean energy technologies, polymer nanocomposites, environmental systems, and nanoelectronics. Advances such as autonomous synthesis guided by deep learning, high-throughput experimentation, and AI-enabled property prediction are critically reviewed. Challenges including data fragmentation, class imbalance, and lack of benchmarking are addressed, alongside future directions such as physics-informed machine learning, robotics integration, and multi-objective optimization. This review positions AI as a disruptive catalyst in advanced CNT research, offering intelligent automation and predictive insights across diverse carbon-material applications.</div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"547 - 577"},"PeriodicalIF":5.8,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752546","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

Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor 流动反应器中多壁碳纳米管的高效共价功能化

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-12 DOI: 10.1007/s42823-026-01047-0

Taehoon Kang, Chae Yeon Park, Wonho Cho, Seungjun Lee, Byung Hwa Seo, Ye-Jin Hwang

{"title":"Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor","authors":"Taehoon Kang, Chae Yeon Park, Wonho Cho, Seungjun Lee, Byung Hwa Seo, Ye-Jin Hwang","doi":"10.1007/s42823-026-01047-0","DOIUrl":"10.1007/s42823-026-01047-0","url":null,"abstract":"<div>\u0000 \u0000 Multi-walled carbon nanotubes (MWCNTs), widely recognized for their excellent electrical, thermal, and mechanical properties, have gained significant attention across various fields. However, aggregation due to their high Van der Waals force limits their processability and applications. Surface functionalization can offer a solution to these limitations and broadens their potential uses. Nevertheless, the low reaction rates of covalent functionalization in conventional batch reactors, caused by MWCNT aggregation, remain a significant challenge to overcome. Moreover, controlling the degree of functionalization in batch reactors is difficult. In this work, we demonstrated covalent functionalization of MWCNT with 4-bromoaniline to produce MWCNT-PhBr with high, controllable degrees of functionalization, using a customized packed-bed flow reactor. The reaction was performed under various conditions, including the reactant injection sequence, reaction time (1–3 h), temperature (60–80 ℃), and concentration of reactant (0.42–1.72 M). The resulting degree of functionalization was controlled within the range of 1.81–5.70 wt%. Notably, the highest degree of functionalization obtained under the optimized flow conditions (5.70 wt% at 70 °C and 1.72 M) represents a 2.11-fold increase compared to that achieved under the optimized batch conditions (2.70 wt% at 60 °C and 0.86 M). These results suggest that the flow system is an efficient and reliable method for synthesizing functionalized MWCNTs with the desired functional group content.\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"997 - 1006"},"PeriodicalIF":5.8,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752589","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

Sustainable ibuprofen degradation using eco-friendly CQDs/TiO2 nanocomposites from banana peels waste 利用香蕉皮废弃物中的环保CQDs/TiO2纳米复合材料可持续降解布洛芬

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-12 DOI: 10.1007/s42823-026-01031-8

Maisari Utami, Is Sholidhyawati, Muhammad Miqdam Musawwa, Karna Wijaya, Sung Su Kim, Murugesan Chandrasekaran, Debnath Ovi, Saud Alarifi

{"title":"Sustainable ibuprofen degradation using eco-friendly CQDs/TiO2 nanocomposites from banana peels waste","authors":"Maisari Utami, Is Sholidhyawati, Muhammad Miqdam Musawwa, Karna Wijaya, Sung Su Kim, Murugesan Chandrasekaran, Debnath Ovi, Saud Alarifi","doi":"10.1007/s42823-026-01031-8","DOIUrl":"10.1007/s42823-026-01031-8","url":null,"abstract":"<div>\u0000 \u0000 Pharmaceutical waste directly contributes to environmental pollution. Ibuprofen is one of the pharmaceutical wastes that often ends up in the environment without proper treatment, causing various harmful effects. Here, carbon quantum dots/titanium dioxide (CQDs/TiO₂) nanocomposites synthesis as a photocatalyst for ibuprofen photodegradation has been investigated. This research consists of 3 steps: the first was initiated with CQD synthesis using the hydrothermal method derived from banana peel extract, followed by the synthesis of TiO2 rutile and anatase with banana peel extract as the reducing agent. The last was CQDs/TiO2 nanocomposites synthesis using a hydrothermal method. The CQDs/TiO2 nanocomposites obtained were characterized by TEM, FTIR, XRD, SEM-EDX, and UV-Visible spectroscopy. Bright green fluorescence of CQDs was observed under UV irradiation with a average size of 9.5 nm. The nanocomposite of CQD/TiO2 rutile and CQD/TiO2 anatase exhibited crystalline structures, each displaying a diffraction pattern of rutile and anatase, indicating high purity. However, CQDs/TiO2 anatase has a smaller size of 8 nm than CQD/TiO2 rutile of 132 nm. Therefore, the CQDs/TiO2 anatase nanocomposite showed the most effectiveness as a photocatalyst in degrading ibuprofen, with a photodegradation percentage of up to 53.656% at pH 3, a slight photocatalyst mass of 0.1 g, and a short photodegradation time of 30 min.\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"823 - 839"},"PeriodicalIF":5.8,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752565","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

Fast-charging natural graphite anodes: synergistic effects of optimized spheronization and TLE-tailored pitch coating 快速充电天然石墨阳极：优化球化与tle定制沥青涂层的协同效应

IF 5.8 3区材料科学

Carbon Letters Pub Date : 2026-03-12 DOI: 10.1007/s42823-026-01048-z

Seung-Jae Ha, Hyocheol Lee, Changkyu Kim, Min-Seong Jo, Taehyeon Kim, Jin-Yong Hong, Young-Pyo Jeon

{"title":"Fast-charging natural graphite anodes: synergistic effects of optimized spheronization and TLE-tailored pitch coating","authors":"Seung-Jae Ha, Hyocheol Lee, Changkyu Kim, Min-Seong Jo, Taehyeon Kim, Jin-Yong Hong, Young-Pyo Jeon","doi":"10.1007/s42823-026-01048-z","DOIUrl":"10.1007/s42823-026-01048-z","url":null,"abstract":"<div>Lithium-ion batteries (LIBs) are widely used as key components in electric vehicles (EVs) and energy storage systems (ESS) owing to their high energy density, long cycle life, and stable operation. The rapid expansion of the EV market has intensified the demand for advanced graphite anode materials that combine cost competitiveness with superior electrochemical performance, including fast-charging capability and structural stability. This study presents an integrated approach for optimizing the physical spheronization of natural graphite and synthesizing a high-performance coating pitch (CP) for chemical spheronization. The correlation between mechanical stress and morphological evolution during the process was quantitatively analyzed using an Air Classifier Mill (ACM). Optimal spheronization was achieved by aligning theoretically calculated stress levels (≈ 3.72 MPa for particle rounding and > 14.86 MPa for fracture) with experimental results. High-performance coating pitches were prepared via stepwise polymerization of pyrolysis fuel oil (PFO), followed by Thin Layer Evaporation (TLE)-based molecular weight distribution tailoring. The resulting pitch exhibited a softening point of 279.4 °C, coking value of 70.7%, and zero quinoline insoluble (QI) content, and was applied as a coating precursor. The optimized spheronized graphite anode showed excellent electrochemical properties, including an initial Coulombic efficiency of 92.6% and 97.4% capacity retention after 50 cycles. Electrochemical impedance spectroscopy (EIS) and galvanostatic intermittent titration technique (GITT) analyses further confirmed efficient lithium-ion diffusion at both the surface and core, demonstrating suitability for fast-charging LIB applications.<h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture>The alternative text for this image may have been generated using AI.</div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"1007 - 1027"},"PeriodicalIF":5.8,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752425","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