간행물
Carbon Letters KCI 등재 Carbon letters
- 발행기관 한국탄소학회
- 자료유형 학술지
- 간기 연7회
- ISSN 1976-4251 (Print)2233-4998 (Online)
- 수록기간 2000 ~ 2026
- 주제분류 자연과학 > 자연과학일반 자연과학 분류의 다른 간행물
- 십진분류KDC 530DDC 620
권호리스트/논문검색
Vol.36 No.1 (2026년 2월) 31건
21.
2026.02
구독 인증기관 무료, 개인회원 유료
Seungjae Moon, Kitak Kim, Suah Park, Yongjun Yang, Seung Gun Kim, Heewon Jin, Sang Eun Kim, Seunghoon Nam, Dalsu Choi
In this study, we upcycled waste polyethylene (PE) foam into a hard carbon anode material for sodium-ion batteries (SIBs) via sulfonation and subsequent carbonization. Following an optimized sulfonation process (100 °C, 24 h), the sample carbonized at 800℃ (PE_C800) demonstrated the best performance, showing a high reversible capacity of 180 mAh·g− 1 at 0.1 C, excellent rate capability, and long-term cycling stability (93.3% retention after 100 cycles). Structural analysis revealed this sample possessed a hierarchical porous structure and an interlayer spacing (0.388 nm), suitable for Na+ insertion. Through cyclic voltammetry (CV) kinetic analysis and ex-situ Raman spectroscopy, the sodium storage was determined to follow an “adsorption-insertion model”, combining surface adsorption and interlayer insertion. This work presents a practical route for converting plastic waste into high performance energy storage materials.
4,600원
22.
2026.02
구독 인증기관 무료, 개인회원 유료
Sarfaraz Ansari, Ram Bilash Choudhary, Batistalang Myrthong
An appropriate combination of electrode-electrolytes has the competence to augment the supercapacitive behaviour to a greater range of excellence. Following this, a binary polymeric composite PPy/o-CNTs (PC) has been synthesized via insitu chemical oxidative polymerization of polypyrrole (PPy) in the presence of oxidized carbon nanotubes (o-CNTs) and its electrochemical performance has been evaluated in difference electrolytic environments viz. 1/2/3 M KCl and 1/2/3 M H2SO4. The composite PC elucidated the highest specific capacitance of 364.5 F g− 1 (at 100 mV s− 1) and 487.4 F g− 1 (at 1 A g− 1) in 3 M KCl and 729.9 F g− 1 (at 100 mV s− 1) and 559.7 F g− 1 (at 1 A g− 1) in 3 M H2SO4 respectively. The synthesized composite also showed significantly improved cyclic behaviour with capacitance retention up to 94.65% in 2 M KCl for 2000 GCD cycles. The improved electrochemical performance of PC could be attributed to the presence of o-CNT which not only provided a conductive network throughout the electrode materials to facilitate charge transfer kinetics but also provided a mechanically stable support thereby anchoring the polymeric chain to enhance the overall cyclic stability. Further, the lower value of solution resistance and charge transfer resistance also affirmed the ameliorated supercapacitive behaviour of PC.
5,100원
23.
2026.02
구독 인증기관 무료, 개인회원 유료
Yulong Ding, Jun Jiang, Junzhong Liang, Xiaoyu Qin, Yanlin Ke, Juncong She, Yu Zhang, Shaozhi Deng
Insulated gate bipolar transistor (IGBT) is a kind of power switching device owns the advantage of gate voltage control and high power capacity, while remaining the problem of potential catastrophic failures in high voltage. A novel structure of IGBT combined with a vacuum field emission transistor (VFET) and a bipolar junction transistor (BJT) was introduced which exhibits high blocking voltage, high frequency characteristics and excellent robustness toward catastrophic failure such as latch-up and gate oxide breakdown. A pulsing current overshooting effect due to the gate-cathode capacitance of VFET was observed to expedite the switching process, offering a novel approach to shorten the switching time of IGBT. Benefit from this, the field emission IGBT (FE-IGBT) was capable of operating over a broad frequency range from DC to 100 kHz. The static and dynamic characteristics of the device were reported, including a blocking voltage of 800 V, a maximum output current of 0.5 A. This work presented a new route to bloom the performance of IGBT and also created a feasibility to connect vacuum electronics device with solid-state semiconductor devices.
4,000원
24.
2026.02
구독 인증기관 무료, 개인회원 유료
Yeasin Arafat Tarek, Shawon Saha, Shimul Saha, Akter Hossain Reaz, Ayesha Sharmin, Chanchal Kumar Roy, Hasi Rani Barai, Shakhawat H. Firoz
Waste materials have become a promising source for producing carbonaceous materials, that can be utilized in energy storage system as well as in wide range of applications. The growing accumulation of waste tires presents significant environmental challenges, but also offers an opportunity to convert them into valuable carbon-based materials for energy storage applications. In the present study, a facile and scalable approach has been demonstrated to synthesizing selfdoped, heteroatom-enriched carbon from waste tires via catalytic pyrolysis followed by hydrochloric acid (HCl) leaching. The resulting chemically treated carbon (CTC), derived from pyrolytic carbon char (CC), exhibits a porous microstructure and is doped with multiple heteroatoms, as confirmed through comprehensive characterization techniques, including X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and N2 adsorption desorption Brunauer-Emmett–Teller (BET) isotherm. The electrochemical performance of both CC and CTC was evaluated in a symmetric two-electrode configuration using 1 M tetraethylammonium tetrafluoroborate (TEABF4) in acetonitrile (ACN) organic electrolyte. The CTC exhibited significantly enhanced capacitive performance compared to CC, achieving a specific capacitance of 346.67 Fg− 1 at 1 A g− 1, alongside excellent energy density (39 Wh kg− 1) and power density (450 W kg− 1). Notably, the CTC retained 90% of its initial capacitance after 10,000 charge-discharge cycles at a current density of 10 A g− 1, demonstrating excellent cycling stability. This work presents a facile, and sustainable approach for repurposing waste tires into high-performance electrode materials for supercapacitors.
4,800원
25.
2026.02
구독 인증기관 무료, 개인회원 유료
The inherent non-degradation and potential toxicity of pure carbon nanomaterials in vivo remain the main obstacles to clinical translation. This study attempts to prepare a novel biodegradable caramelized hollow mesoporous carbon nanospheres (CHMCNs) with mesoporous shells and a large cavity, which can be decomposed into small particles (~ 5 nm) within 7 days under physiological conditions. By varying the synthesis parameters and templates, CHMCNs with different morphologies can be obtained to meet different application requirements. Meanwhile, CHMCNs exhibit excellent biocompatibility and high drug-loading efficiency, enabling effective delivery of anticancer drugs (DOX) into cells. In addition, due to the good photothermal efficiency (PTT, 29.7%), CHMCNs facilitate pH/NIR dual-responsive drug release under NIR irradiation, resulting in an excellent synergistic chemo-photothermal therapy effect. The results indicate that CHMCNs is a promising drug delivery carrier. In conclusion, this work addresses the non-degradable defects of traditional mesoporous carbon nanomaterials (MCN) and proposes a novel nanocarrier system for tumor treatment.
5,200원
26.
2026.02
구독 인증기관 무료, 개인회원 유료
Gopika Meenakumari Gopakumar, S. Prince Makarios Paul, Mani Govindasamy, Ravi Trivedi, Beena Saraswathyamma
A dual-analyte electrochemical platform was developed using RuS2-Fe nanodots and a multi-walled carbon nanotube (MWCNT) incorporated RuS2-Fe composite (RuS2/MWCNT-Fe) composites for the sensitive detection of xylazine hydrochloride (XLZ) and erythrosine B (ERY). Both the RuS2-Fe nanodots and RuS2/MWCNT-Fe composites were synthesized via hydrothermal method then used to develop sensors via drop casting on glassy carbon electrodes (GCE). The RuS2-Fe nanodots and RuS2/MWCNT-Fe composites greatly improved the redox capacity of the interfacial region and electron transfer to the surface of the electrodes. Theoretical density functional calculations also validated experimental evidence of charge redistribution within the iron centres of the complex, narrowing of the band gap, and preferential adsorption of both XLZ and ERY. In particular, RuS2-Fe/GCE exhibited unprecedented electrodes within the context of the XLZ analyte, achieving 0.249 nM LOD and a linear range of 0.005–2500 μM. In contrasting work, RuS2/MWCNT-Fe composites electrode obtained 36 nM LOD and ranged 0.05–100 μM towards ERY. Careful analysis of electrochemical impedance and control studies utilizing pristine RuS2 with variable Fe concentrations, alongside extensive durability analysis, elucidated the significant influence of trace Fe concentrations on catalytic activity enhancements. In the context of recent reports on MXene, CNT, and oxide hybrids, the RuS2/MWCNT-Fe system still exhibited ample confirmations on charge transfer resistance and sensitivity. Proposed oxidation mechanisms illustrate the influence of iron on interfacial electron-proton coupling. The versatility of RuS2-Fe nanodots set as a carbon-based electrocatalyst has now been expanded to the dual detection of veterinary sedatives and food colorants. Such a development can be translated as a new stride toward the development of portable food safety, pharmaceutical quality control, and clinical diagnostics devices.
6,400원
27.
2026.02
구독 인증기관 무료, 개인회원 유료
Wenping Cao, Jiabin Tu, Wanxiaonan Chen, Linsen Zhang, Qianru Lin, Jie Sheng
Sugar-derived carbon fibers (SBCFs) emerge as a promising next-generation sustainable material due to their biomass origin, cost-effectiveness, and superior strength-to-weight ratio. However, industrial adoption remains hindered by inefficient optimization of complex pre-carbonization processes. Here, we present a machine learning (ML)-driven framework to address this challenge, integrating experimental data to establish quantitative correlations between pre-carbonization parameters (temperature, dwell time) and mechanical performance. Gradient Boosted Decision Trees (GBDT) achieved superior predictive accuracy (R2 = 0.857 for tensile strength), enabling efficient identification of optimal conditions: 220 °C pre-carbonization temperature with 100 min dwell time. Experimental validation confirmed a 5.60% tensile strength enhancement over baseline protocols. Optimized protocols yield fibers with 874 MPa tensile strength and 76 GPa modulus, with an average diameter of 28 μm. This machine learning-driven methodology not only advances SBCF manufacturing but also establishes a generalizable paradigm for accelerating functional material development.
4,500원
28.
2026.02
구독 인증기관 무료, 개인회원 유료
Shalaka A. Kamble, Soumen Karmakar, Somnath R. Bhopale, Sanket D. Jangale, Neha P. Ghodke, Srikumar Ghorui, S. V. Bhoraskar, M. A. More1, V. L. Mathe
Here we report self-propagated growth of lanthanum hexaboride (LaB6) decorated Carbon Nano Tubes (CNTs) from the pyrolytic graphite rods treated with nitrogen arc plasma. The system so formed is named as LaB6-CNTs. Two pyrolytic graphite rods were used as electrodes in the arc plasma reactor whereas, the LaB6 sample kept onto anode acts as catalyst. The anode left out with residue of LaB6 was exposed to normal atmospheric conditions which show ignition of selfpropagated growth of CNTs decorated with LaB6 . Such growth was observed within a couple of days after exposure to the environment without any external supply of energy. The growth is found to be slow and continues till complete erosion of the pyrolytic graphite block. The self-propagated powder obtained was characterized thoroughly using XRD, Raman spectroscopy, FESEM and TEM techniques. These nanostructures were found to exhibit efficient field-emitting properties with a low turn-on electric field of ~ 2 V/μm, and a current density of ~ 1.5 A/cm2 at an applied electric field of 1.8 V/m. Therefore, the nanostructures obtained can be explored for electron emission applications.
4,300원
29.
2026.02
구독 인증기관 무료, 개인회원 유료
Ying Quan, Yuanyuan Li, Yude Zhang, Qian Zhang, Mengjia Wang, Wenzhuo Cheng
Nickel-cobalt layered double hydroxide (NiCo-LDH) is a promising supercapacitor material, but its performance is limited by nanosheet stacking and poor conductivity. Incorporating a porous carbon support is an effective strategy to overcome these issues. Herein, porous carbon derived from both puffed and unpuffed sorghum seeds was synthesized at various pre-carbonization temperatures. The optimized carbon from puffed seeds (PH-R4A7), abundant in pyridinic-N and oxygen groups, facilitates the uniform growth of NiCo-LDH. The resulting NiCo-LDH/PH-R4A7 composite delivers a high specific capacitance of 807.2 C g− 1 at 1 A g− 1 and excellent capacitance retention (69.9% at 20 A g− 1), surpassing both pristine NiCo-LDH and its unpuffed counterpart (NiCo-LDH/PC-R4A7). Furthermore, an asymmetric supercapacitor (NiCo-LDH/PH-R4A7//PH-R6A7) achieves a high energy density of 85.1 Wh kg− 1 at a power density of 799.9 W kg− 1, along with outstanding cycling stability (88.4% capacitance retention after 10,000 cycles). This work demonstrates that puffing pretreatment is an important strategy for enhancing the structural and electrochemical properties of NiCo-LDH/ porous carbon composites.
5,100원
30.
2026.02
구독 인증기관 무료, 개인회원 유료
An-ping Zuo, Chao-qiang Wang, Cong-jun Qi, Yan-yan Liu
Rising industrial carbon dioxide emissions necessitate utilization technologies. Carbon dioxide solidification captures carbon dioxide by reacting with alkaline compounds in concrete, improving its properties. This study integrates a life cycle assessment (LCA) model to evaluate carbon reduction potential with Machine Learning (ML) models to predict complex production dynamics. It investigates solidification mechanisms. Results show co-solidification and external solidification achieve reductions of 676.45 and 704.9 kilograms per tonne, respectively, with notable environmental benefits. A comparison of three predictive models, namely Feedforward Neural Networks (FNN), Polynomial Regression, and Support Vector Regression, confirms that FNN is the optimal choice. It exhibits a lower mean absolute error (791) and a higher coefficient of determination (0.91). SHAP analysis revealed that ‘Coal consumption’ and ‘Electricity consumption’ were the primary drivers of the FNN prediction, confirming the model’s reliance on essential energy inputs, while the ‘date’ feature exerted minimum influence. Projections indicate China’s 2024 concrete production emissions could be 4.23 billion tonnes via synergistic curing, versus 4.37 billion tonnes with conventional external curing. Case and visual analyses further validate carbon dioxide curing’s advantages in improving concrete performance and cutting energy use.
5,800원
31.
2026.02
구독 인증기관 무료, 개인회원 유료
Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors
Reddi Mohan Naidu Kalla, Rajesh Cheruku, Sivarama Krishna Lakkaboyana, Sreedhar Doraswamy, Jaewoong Lee
Biomass-derived porous carbons are increasingly examined as practical electrode materials for supercapacitors because they combine low cost with adaptable structural features. In this study, black-eyed pea peels, a widely available agricultural residue, is used as the precursor and activated with either K2CO3 or KMnO4, which resulted in noticeable differences in pore development and electrochemical behaviour. Thermogravimetric analysis showed that the derived carbons retain good thermal stability. X-ray diffraction, X-ray photoelectron spectroscopy, and Raman measurements indicated a largely disordered carbon framework with only limited graphitic domains, offering numerous defect sites that support ion adsorption. Scanning electron microscopy revealed thin carbon walls and an ultra-microporous network with a considerable proportion of mesopores, which was further supported by Brunauer–Emmett–Teller analysis. The material obtained using K2CO3 delivered a capacitance of around 236 F g− 1, sustained almost 99% of its performance during long cycling, and responded better at high current. The KMnO4 activated sample exhibited additional pseudocapacitive contributions but lower stability. Overall, these results underline the role of activation chemistry in governing pore architecture and surface functionality and show that agricultural residues can be transformed into viable electrode materials for high-power energy-storage applications.
4,500원
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