Carbon Letters最新文献

{"title":"Effect of cobalt on the oxide layer formation on carbon steel in hydrothermal acidic environment","authors":"Sion Kim,&nbsp;Kamal Asghar,&nbsp;Miguta Faustine Ngulimi,&nbsp;Bum Kyoung Seo,&nbsp;Dora Capone,&nbsp;Yahya Hoque Mozumder,&nbsp;Fabio Scenini,&nbsp;Changhyun Roh","doi":"10.1007/s42823-026-01064-z","DOIUrl":"10.1007/s42823-026-01064-z","url":null,"abstract":"<p>Oxide scales formed on carbon steel SA 106 GR.B under hydrothermal acidic HCl and HCl-CoSO₄ were comparatively characterized with and without cobalt.</p><p>In HCl, a single-layer Fe₃O₄ spinel scale with uniform O and Fe distribution through the thickness was identified.</p><p>In HCl-CoSO₄, a bilayer scale with a Co-enriched inner layer and a Co-lean, magnetite-dominated outer layer was fabricated, evidencing depth-dependent compositional partitioning.</p>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1311 - 1319"},"PeriodicalIF":5.8,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985192","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}

{"title":"Carbon-based biodegradable composite microspheres enabling magnetic–thermal coupling for chemoembolization","authors":"Seongjin Kim,&nbsp;Hamin Kim,&nbsp;Seungae Lee","doi":"10.1007/s42823-026-01063-0","DOIUrl":"10.1007/s42823-026-01063-0","url":null,"abstract":"<div><p>Carbon-containing polymer composites integrated with metal oxide nanoparticles offer opportunities to regulate thermal and magnetic responses through interfacial interactions. This study develops Fe₃O₄/polycaprolactone (PCL) composite microspheres constructed from a carbon-containing biodegradable matrix, enabling magnetically guided chemoembolization and hyperthermia. The microspheres are fabricated <i>via</i> a water-in-oil-in-water emulsion method, resulting in a controlled size distribution (350–550 μm) suitable for embolization. Fe₃O₄ nanoparticles are incorporated to confer magnetic responsiveness and photothermal activity, while the carbon-rich polymer matrix (PCL) provides biodegradability and cost-effectiveness. Comprehensive physicochemical characterization confirms the successful integration of Fe₃O₄ and homogeneous morphology of the microspheres. The resulting microspheres exhibit adequate magnetization (6.6 emu g^− 1), photothermal heating capability under near-infrared laser irradiation (ΔT = 4.5 °C at 50 mg mL^− 1) and dose-dependent embolization behavior in a phantom model. Drug release experiments reveal a biphasic release profile, with an initial burst release (cumulative release of ~ 13% within 3 h), followed by sustained release reaching approximately 19%. Thermal analysis revealed a narrowing of the derivative thermogravimetry (DTG) peak relative to neat PCL, suggesting synchronized degradation behavior associated with carbon–metal oxide interfacial interaction. These findings demonstrate that Fe₃O₄/PCL composite system exhibits coordinated magnetic–thermal functionality governed by the carbon-containing polymer matrix and its interfacial interaction with iron oxide nanoparticles.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1299 - 1310"},"PeriodicalIF":5.8,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985235","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}

{"title":"High-performance Co3O4/CoMoO4 core/sheath heterostructure on stainless steel as a stable electrode for advanced symmetric supercapacitors","authors":"Vijay S. Kumbhar,&nbsp;Rahul S. Redekar,&nbsp;Nilesh R. Chodankar,&nbsp;Ebrahim Alhajri,&nbsp;Amal Al Ghaferi,&nbsp;Jiyoung Kim,&nbsp;Kiyoung Lee,&nbsp;Kanagaraj Thamaraiselvi,&nbsp;Nilesh L. Tarwal,&nbsp;Ajay Jagadale,&nbsp;Rajendra G. Sonkawade,&nbsp;Jae-Jin Shim","doi":"10.1007/s42823-026-01058-x","DOIUrl":"10.1007/s42823-026-01058-x","url":null,"abstract":"<div><p>The development of core/sheath based heterostructure electrodes has gained significant attention due to synergistic effect that provide increased active sites and improved charge transport. Moreover, the sheath protects the core leading to the prolonged structural and electrochemical stability. Herein, we have synthesized Co₃O₄ nanoplates coated thin layer of CoMoO₄ nanoparticles forming Co₃O₄/CoMoO₄ core/sheath heterostructure on low-cost, conductive, and mechanically stable stainless steel substrate for supercapacitor application. A combined approach of successive ionic layer adsorption and reaction (SILAR) and electrodeposition wherein the number of SILAR cycles and deposition time are optimized to control the structural, morphological, and supercapacitive properties of the Co₃O₄/CoMoO₄ heterostructure. The Co₃O₄/CoMoO₄ heterostructure exhibited significantly enhanced supercapacitive performance compared to the bare Co₃O₄ and CoMoO₄ electrodes when evaluated in a 1 M KOH electrolyte. Notably, it demonstrated a specific capacitance of 1187.6 F g^-1 at 4 A g^-1, excellent rate capability (80%) for 5-fold increase in the current density and cycling stability of 87.5%. Furthermore, Co₃O₄/CoMoO₄//Co₃O₄/CoMoO₄ symmetric supercapacitor is fabricated that delivered highest energy and power densities of 11.8 kW kg^-1 and 71.2 Wh kg^-1, respectively. Thus, the present work advances design of core/sheath based metal oxides for high performance energy storage application.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1249 - 1263"},"PeriodicalIF":5.8,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42823-026-01058-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985349","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}

{"title":"A simulation investigation on the activated carbon-based LIG model and its hydrogen storage performance","authors":"Jie Ruan,&nbsp;Qian Xu,&nbsp;Ye Chen,&nbsp;Zhengwei Nie","doi":"10.1007/s42823-026-01061-2","DOIUrl":"10.1007/s42823-026-01061-2","url":null,"abstract":"<div>\u0000 \u0000 <p>Hydrogen storage materials using activated carbon are attractive for their tunable pore structures and surface chemistry, but adsorption performance is limited by insufficient microstructural control. This study used a combined molecular dynamics (MD) and grand canonical Monte Carlo (GCMC) simulations to examine the structural evolution of activated carbon under laser irradiation and the hydrogen storage capacity of resulting laser-induced graphene (LIG). Based on three activated carbon models (AC-1: defect-free graphene; AC-2: defective graphene; AC-3: nitrogen-doped graphene), the laser irradiation process was simulated at 2000 K, 2500 K, 3000 K, and 3500 K. The evolution of carbon rings, the formation of small molecular products, and the changes in pore structure were analyzed. The results show that at low temperatures (2000 K and 2500 K), a mixed phase composed of graphene fragments and amorphous carbon formed. At high temperatures (3000 K and 3500 K), large graphene-like network structures formed, with a significant increase in defect density. GCMC simulations show that the activated carbon-based LIG treated at 3000 K had the best hydrogen storage performance, with the highest excess adsorption capacity at 77 K. At room temperature (298 K), the adsorption capacity increased linearly with pressure. The analysis of adsorption sites show that hydrogen molecules preferentially adsorbed on oxygen- and nitrogen-containing functional groups and on five-membered and seven-membered ring defect sites. These findings provide insights into how laser-induced microstructural evolution influences hydrogen adsorption in activated carbon-based materials.</p>\u0000 </div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1279 - 1297"},"PeriodicalIF":5.8,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985234","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}

{"title":"Unveiling trends and insights: a bibliometric analysis of nickel-based electrocatalysts for the valorization of HMF to FDCA","authors":"Yijun Liu,&nbsp;Zihao Liu,&nbsp;Xiaoxiang Zhang,&nbsp;Shiyu Meng,&nbsp;Zhiqiang Chen,&nbsp;Shan Qiu,&nbsp;Fengxia Deng","doi":"10.1007/s42823-026-01051-4","DOIUrl":"10.1007/s42823-026-01051-4","url":null,"abstract":"<div><p>The electrochemical oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) over nickel-based catalysts is a pivotal route for sustainable biomass valorization. Unlike traditional reviews, this work innovatively integrates bibliometric analysis (1991–2025) with a critical assessment of catalyst science. We quantitatively map the field’s exponential growth, identifying key contributors and the strategic shift in research hotspots toward transition metal engineering. Furthermore, we systematically review technical advances in catalyst preparation, active site identification (specifically high-valent NiOOH), and reaction mechanisms (including the electrochemical-chemical mechanism). By combining data-driven insights with a deep analysis of in situ characterization and theoretical calculations, this review offers a novel, comprehensive perspective to guide the rational design of next-generation nickel electrocatalysts.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1087 - 1124"},"PeriodicalIF":5.8,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985308","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}

{"title":"Bio-templated hollow urchin-like CCS@MnO2 composites with tunable dielectric interfaces for broadband microwave absorption and stealth","authors":"Shi Jin,&nbsp;Xueping Wu","doi":"10.1007/s42823-026-01049-y","DOIUrl":"10.1007/s42823-026-01049-y","url":null,"abstract":"<div><p>The relentless advancement of modern communication systems and high-power electronic devices has intensified the challenges of electromagnetic pollution and radar stealth, creating a pressing demand for microwave-absorbing materials that integrate strong absorption, broad bandwidth, and minimal thickness without compromising lightweight characteristics. In this work, we propose an innovative bio-templated approach to fabricate hollow urchin-like MnO₂/carbon heterostructures (CCS@MnO₂) using chitosan-derived carbon spheres (CCS) as sacrificial templates. A precisely controlled hydrothermal-calcination process allows for the formation of a unique structure with integrated hollow cavities and radially aligned, dense manganese dioxide (MnO₂) nanoneedles. This distinct structural design simultaneously reduces material density, extends the propagation path of incident waves through multi-level scattering, and creates a large number of heterogeneous interfaces. The optimized CCS@MnO₂-400 composite exhibits outstanding microwave absorption performance, achieving a minimum reflection loss (RLₘᵢₙ) of –57.04 dB at an ultrathin thickness of 2.0 mm and an effective absorption bandwidth (EAB, RL ≤ –10 dB) of 4.88 GHz, which surpasses the majority of previously reported MnO₂- and carbon-based absorbers. Detailed analysis indicates that nitrogen doping, abundant MnO₂/carbon interfaces, and the fractal hollow morphology work synergistically to improve impedance matching and enhance interfacial polarization, dipole relaxation, and conduction loss. This integrated design effectively breaks the conventional trade-off between thickness and absorption bandwidth. Furthermore, radar cross-section (RCS) simulations confirm excellent stealth performance, with a maximum RCS reduction of 26.65 dB·m² at normal incidence. This study establishes a novel structure–function paradigm that combines bio-inspired templating with tailored dielectric interface engineering, offering a scalable and effective strategy for developing advanced lightweight, broadband, and high-performance microwave absorbers for stealth and electromagnetic protection applications.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1169 - 1182"},"PeriodicalIF":5.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985194","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}

{"title":"Deformation-free circular fibers derived from aqueous reduced graphene oxide for high-performance fiber supercapacitors","authors":"Oh Sung Kwon,&nbsp;Hye Jung Lee,&nbsp;Byeong Guk Kim,&nbsp;Dong Gyun Hong,&nbsp;Ki-Hun Nam,&nbsp;Sunhye Yang,&nbsp;Youngbin Baek,&nbsp;Je In Lee,&nbsp;Seung Yol Jeong","doi":"10.1007/s42823-026-01060-3","DOIUrl":"10.1007/s42823-026-01060-3","url":null,"abstract":"<div><p>Solution-processed graphene fibers are commonly fabricated by wet spinning of a liquid-crystalline (LC) graphene oxide (GO) dope, owing to the homogeneous aqueous dispersion of GO, strong hydrogen bonding, and nematic self-assembly. A straightforward route has thus been established for the formation of graphene fibers. However, during coagulation and subsequent chemical reduction, GO sheets consolidate into densely stacked fiber architectures, which often develop geometric non-uniformity due to anisotropic shrinkage during solvent exchange and reduction. Following chemical reduction, restacking and structural deformation occur, leading to the formation of large voids and ion-inaccessible volumes that reduce the ion-accessible surface area, thereby limiting their applicability in high-performance supercapacitors. Herein, deformation-free circular graphene fibers (GFs) are introduced via wet spinning using a hybrid ammonia-based graphene oxide (AGO)–reduced graphene oxide (rGO) composite dope. The AGO precursor preserves the intrinsic LC assembly characteristics of GO while offering improved dispersion stability and tunable intersheet interactions. The rGO component is engineered to retain stable aqueous dispersibility, enabling homogeneous co-dispersion with AGO sheets. Incorporation of rGO suppresses excessive LC-driven stacking and moderates solvent–coagulant exchange during extrusion, enabling rapid and homogeneous coagulation. In contrast to the layered architecture derived from conventional GO spinning, the rGO-rich hybrid fibers exhibit uniformly organized porous structures with effective pore sites. The mechanically rigid and chemically stable rGO forms a percolated structural framework that supports homogeneous electrical conductivity and mechanical strength while preserving high circularity with axial and radial uniformity. Consequently, the optimized AGO–rGO fibers exhibit enhanced electrical conductivity (567 S cm^–1 after post-drawing) and improved electrochemical capacitance, demonstrating strong potential for high-performance fiber-shaped or wearable supercapacitors.</p><h3>Graphic abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 2","pages":"1061 - 1073"},"PeriodicalIF":5.8,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752593","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}

{"title":"Stabilizing silicon anodes via high-entropy alloying and hierarchical carbon encapsulation for high-performance lithium-ion batteries","authors":"Jung-Hyeok Park,&nbsp;Byeong Guk Kim,&nbsp;Jungdong Shin,&nbsp;Jaeik Hyun,&nbsp;Seung Yol Jeong,&nbsp;Je In Lee,&nbsp;Sunhye Yang,&nbsp;Ki-Hun Nam","doi":"10.1007/s42823-026-01059-w","DOIUrl":"10.1007/s42823-026-01059-w","url":null,"abstract":"<div><p>Silicon (Si) is widely regarded as a highly attractive anode material for lithium-ion batteries (LIBs) because of its intrinsically high theoretical capacity; however, its practical implementation is severely hindered by large volume changes, mechanical instability, and limited charge-transport efficiency during repeated cycling. Alloying Si with metallic elements has been investigated as an effective strategy to mitigate these issues, yet conventional low-complexity alloys often fail to provide sufficient long-term stability. In this work, we introduce a high-entropy Si alloy (HESiA) anode concept based on equiatomic multi-element alloying, designed to fundamentally regulate Si lithiation behavior. The HESiA, consisting of multiple metallic elements homogeneously incorporated into a Si-rich matrix, is synthesized via a mechanical alloying process. Compared with single-element Si alloys, the high-entropy architecture enables more uniform stress distribution and improved electrochemical durability. To further enhance electronic connectivity and mechanical robustness, the HESiA is integrated with a hybrid reduced graphene oxide/carbon nanotube (rGO/CNT) conductive framework through a spray-drying process, forming a conformal carbon-encapsulated composite. Furthermore, graphite–HESiA composite electrodes demonstrate enhanced capacity utilization, improved rate performance, and stable cycling behavior compared with pristine graphite electrodes, while preserving structural integrity under high-rate operation. These results highlight that high-entropy alloying, combined with hierarchical carbon encapsulation, provides a versatile and potentially scalable materials-design strategy for overcoming the long-standing capacity–stability trade-off of Si anodes, offering a viable pathway toward next-generation high-energy-density LIBs.</p><h3>Graphic abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1265 - 1277"},"PeriodicalIF":5.8,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985191","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}

{"title":"Hybrid capacitive deionization system for short-chain perfluoroalkyl substances (PFAS) removal using activated carbon composite and Nafion-coated prussian blue electrodes","authors":"Harang Park,&nbsp;Byunghyun Kim,&nbsp;Hongsik Yoon,&nbsp;Wook Ahn,&nbsp;Young-Woo Lee,&nbsp;Younghyun Cho,&nbsp;Jaehan Lee","doi":"10.1007/s42823-026-01054-1","DOIUrl":"10.1007/s42823-026-01054-1","url":null,"abstract":"<div><p>Perfluoroalkyl substances (PFAS), which are used in various industries due to their excellent thermal stability and chemical durability, have strong C-F bonds that are not easily degraded over time, causing them to accumulate in the human body and in the environment. Therefore, the development of PFAS treatment technology is emerging as an urgent issue, and PFAS regulations are being strengthened internationally. This study proposes an optimized hybrid capacitive deionization (HCDI) system using activated carbon composite and Nafion-coated Prussian blue (PB) electrodes for the effective removal of PFAS with short fluoroalkyl chains, such as perfluorobutane sulfonic acid (PFBS). It was found that the HCDI system exhibited higher deionization capacities (26.9 mg/g and 0.60 mg/cm²), corresponding to increases of 11.6% and 39.5% on a gravimetric and areal basis, respectively, compared with the ACDI system (24.1 mg/g and 0.43 mg/cm²). Moreover, HCDI consumed less energy (0.44 Wh/g) under the same conditions. This study aims to contribute to the development of sustainable water treatment technology for PFAS removal and the design of a breakthrough HCDI system using a Nafion-coated PB electrode.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1197 - 1207"},"PeriodicalIF":5.8,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985231","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}

{"title":"Cs2AgBiBr6 / PVDF nanocomposites as electroactive layer for triboelectric nanogenerators: structural, optical and electrical revelations","authors":"B. Madhumitha,&nbsp;S. Vasanth Kumar,&nbsp;N. Manjushree,&nbsp;V. L. Yashaswini,&nbsp;Kushal M. Gowda,&nbsp;R. Kavya,&nbsp;M. A. Sangamesha,&nbsp;S. M. Rumana Farheen,&nbsp;S. Krishnaveni,&nbsp;Pradeep Reddy Vanga,&nbsp;B. M. Sachith,&nbsp;G. Unnikrishnan Panicker,&nbsp;P Mahadevaprasad,&nbsp;B. S. Madhukar","doi":"10.1007/s42823-026-01046-1","DOIUrl":"10.1007/s42823-026-01046-1","url":null,"abstract":"<div><p>The integration of advanced functional materials into mechanical energy harvesting systems is essential for future energy solutions. The present work focuses on the synthesis of Cs₂AgBiBr₆ double perovskite using a modified antisolvent reprecipitation method and its incorporation into the Polyvinylidene fluoride (PVDF) polymer to enhance triboelectric performance using the solvent casting method. The nanocomposites, fabricated with variable Cs₂AgBiBr₆ concentration (0.0, 0.5, 1.0, 2.0 and 4.0 wt/wt%), were subjected to various structural, morphological and optical characterisations by employing various spectroscopic and microscopic techniques. The fabricated nanocomposite shows high stability and charge-holding capability, ensuring effective performance across diverse environmental conditions. Therefore, the prepared nanocomposites were utilised as an electroactive layer for the fabrication of Triboelectric nanogenerators (TENGs). The optimised double perovskite-polymer-based triboelectric nanogenerator (P-TENG) reveals a substantial enhancement in output performance. Notably, the device incorporating 4.0 wt/wt % exhibited a peak-to-peak output voltage and current of 352 V and 52 µA (under 5 Hz and 10 N conditions), than those of the pristine PVDF-based TENG device. Furthermore, the device demonstrated practical applicability by efficiently powering over 60 LEDs, charging different capacitors, and powering the digital watch. Overall, this research highlights the role of lead-free double perovskite-based triboelectric nanogenerators in advanced self-sustainable energy harvesting applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"36 3","pages":"1145 - 1168"},"PeriodicalIF":5.8,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147985309","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}