Nabiil Ahmadi Mohd Zohdi, Fathilah Ali, Wan Muhammad Arief Wan Azle, Muhammad Nasrul Hakimi Muhammad Rezal, Muhammad Alif Ziqri Ahmad Nizam, Abdullah Nidhal Hanafi, Muhammad Izzaham Mohtar, Jamarosliza Jamaluddin, Nur Izzah Athirah Che Kassim, Md Nabil Ab Adzim Saifuddin, Ahmad Anas Nagoor Gunny, Kumuthini Chandrasekaram, Kyunghee Son, Minsoo P. Kim
{"title":"Solvent-Engineered Extraction of Ziziphus Mauritiana Essential Oils as Functional Antimicrobial Additives for Antimicrobial Coatings and Packaging Systems","authors":"Nabiil Ahmadi Mohd Zohdi, Fathilah Ali, Wan Muhammad Arief Wan Azle, Muhammad Nasrul Hakimi Muhammad Rezal, Muhammad Alif Ziqri Ahmad Nizam, Abdullah Nidhal Hanafi, Muhammad Izzaham Mohtar, Jamarosliza Jamaluddin, Nur Izzah Athirah Che Kassim, Md Nabil Ab Adzim Saifuddin, Ahmad Anas Nagoor Gunny, Kumuthini Chandrasekaram, Kyunghee Son, Minsoo P. Kim","doi":"10.1007/s11814-026-00730-2","DOIUrl":"10.1007/s11814-026-00730-2","url":null,"abstract":"<div><p>Bio-derived antimicrobial additives are gaining significant attention for functional polymer materials, including antimicrobial coatings, packaging films, and surface-engineered composites. In such macromolecular systems, the extraction chemistry is a critical factor as it governs the molecular functionality, polarity balance, and subsequent compatibility with polymer matrices. This study demonstrates a solvent-controlled Soxhlet extraction strategy using mixed hexane–ethanol systems (4:6, 6:4, and 7:3 ratios) to tailor the chemical characteristics of <i>Ziziphus mauritiana</i> essential oils for materials-oriented applications. A hexane–ethanol ratio of 6:4 produced a markedly enhanced oil yield of 39.8%, attributed to optimized solvent–matrix interactions enabling the simultaneous recovery of nonpolar lipid components and polar oxygenated compounds. FT-IR analysis revealed a balanced distribution of functional groups, indicating strong potential for intermolecular interactions relevant to polymer compatibility and dispersion stability. Gas chromatography–mass spectrometry (GC‑MS) analysis identified the presence of major plant-derived constituents such as phytol, squalene, fatty acid ethyl esters, and minor oxygenated terpenoids. Scanning electron microscopy (SEM) and optical microscopy provided mechanistic insights into mass transport, revealing solvent-dependent disruption of the plant matrix that facilitates the release of active species. The optimized bio-additive exhibited superior antibacterial activity against both Gram-positive and Gram-negative bacteria, alongside concentration-dependent antifungal performance. These findings highlight the role of solvent engineering as a robust materials design strategy for tailoring bio-derived additives, supporting their integration into sustainable and high-performance antimicrobial polymer systems.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2721 - 2733"},"PeriodicalIF":3.4,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sandip M. Mahadev, Rahul S. Redekar, Ganesh S. Powar, Nilesh L. Tarwal, Sushilkumar A. Jadhav
{"title":"Sustainable Carbon Meets Transition Metal Oxide: Fabrication and Electrochemical Assessment of α-MnO₂/Biomass-Carbon Supercapacitor Electrodes","authors":"Sandip M. Mahadev, Rahul S. Redekar, Ganesh S. Powar, Nilesh L. Tarwal, Sushilkumar A. Jadhav","doi":"10.1007/s11814-026-00735-x","DOIUrl":"10.1007/s11814-026-00735-x","url":null,"abstract":"<div><p>We report the synthesis and electrochemical performance of a novel binary composite comprising rod-shaped α-phase Manganese dioxide (MnO₂) and pea-derived carbon (PDC) (MnO₂/PDC) for high-performance supercapacitors. The composite was prepared by mechanical milling and characterized using XRD, FTIR, Raman spectroscopy, TEM, SEM, and XPS. The electrochemical evaluation in three- and two-electrode configurations with aqueous Na₂SO₄ electrolyte revealed good charge-storage capability, excellent rate performance, and superior cyclic stability. The synergistic combination of MnO₂ nanostructures with sustainable biomass-derived carbon significantly enhances electrochemical performance, offering a promising and environmentally friendly approach to next-generation energy-storage materials. The MnO<sub>2</sub>/PDC composite exhibited a specific capacitance of 303.4 F g<sup>− 1</sup> at a current density of 4 mA cm<sup>− 2</sup>. Additionally, the MnO<sub>2</sub>/PDC composite demonstrated an excellent electrode material-electrolyte interface compatibility with capacitance retention rate of 90% after 5000 charge-discharge cycles. The composite attained a specific energy of 71.2 Wh kg<sup>− 1</sup> and a specific power of 1363 W kg<sup>− 1</sup>. Moreover, the composite was tested in a two-electrode assembly device and it exhibited the specific capacitance of 107.7 F g<sup>− 1</sup> at 4 mA cm<sup>− 2</sup> current density.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2753 - 2763"},"PeriodicalIF":3.4,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yongmin Park, Youngwon Kim, Seogyeong Lee, Ji Hui Seo, Pyung Soon Kim, Jaeyong Lee, Han Jin Kim, Jang-Hyeon Seok, Jihoon Jang, Duk-Young Jung, Junsok Choi
{"title":"Surface Modification Effects on Electrochemical Synthesis of NaBH4 for Hydrogen Storage","authors":"Yongmin Park, Youngwon Kim, Seogyeong Lee, Ji Hui Seo, Pyung Soon Kim, Jaeyong Lee, Han Jin Kim, Jang-Hyeon Seok, Jihoon Jang, Duk-Young Jung, Junsok Choi","doi":"10.1007/s11814-026-00729-9","DOIUrl":"10.1007/s11814-026-00729-9","url":null,"abstract":"<div><p>Sodium borohydride, owing to its high hydrogen content and chemical stability, is a promising solid hydrogen storage material. However, its commercialization is limited by the high cost of conventional thermochemical synthesis. This study investigated the feasibility of sodium borohydride synthesis via electrochemical reduction of metaborate, with particular emphasis on the role of electrode surface properties in suppressing the hydrogen evolution reaction and enhancing selectivity. Boron-doped diamond electrodes were employed as both working and counter electrodes, with surface terminations controlled electrochemically and characterized by contact angle, X-ray photoelectron spectroscopy, and linear sweep voltammetry. Under neutral conditions, the boron-doped diamond electrode used as the counter electrode produced a maximum sodium borohydride yield of 1.8%, demonstrating that hydrogen evolution reaction suppression enables selective metaborate reduction. O-terminated boron-doped diamond electrode surfaces promoted metaborate ion adsorption and suppressed the hydrogen evolution reaction, but their surface instability reduced reproducibility. This study provides design guidelines for next-generation electrodes, highlighting that electrode engineering is essential for cost-effective sodium borohydride electrosynthesis.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2801 - 2815"},"PeriodicalIF":3.4,"publicationDate":"2026-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yanmei Dai, Jiayu Teng, Qingyu Zhang, Dongchang Sun, Zijuan Tao, Changshun Huang, Liangli Luo, Bo Liu, Zhimin Ou
{"title":"Dual-Enzyme Cofactor Recycling Drives Efficient 9α-OH-AD Biosynthesis","authors":"Yanmei Dai, Jiayu Teng, Qingyu Zhang, Dongchang Sun, Zijuan Tao, Changshun Huang, Liangli Luo, Bo Liu, Zhimin Ou","doi":"10.1007/s11814-026-00734-y","DOIUrl":"10.1007/s11814-026-00734-y","url":null,"abstract":"<div><p>9α-Hydroxyandrost-4-ene-3,17-dione (9α-OH-AD) is a valuable intermediate for the manufacture of steroid drugs such as hydrocortisone. Its bioproduction from 4-androstene-3,17-dione (4-AD), however, is limited by the low efficiency of the two-component steroid 9α-hydroxylase (KSH) system and insufficient cofactor regeneration during whole-cell catalysis. In this work, RvKshA and RvKshB were mined and heterologously expressed, and plasmid screening identified <i>E. coli</i> BL21/pET28a<sup>+</sup>-RvKshA/pETDuet-1-RvKshB as the best-performing strain. Structural analyses based on molecular docking and molecular dynamics simulations clarified the cooperative catalytic mechanism of KshA and KshB, providing guidance for rational system construction. More importantly, to address the NADH supply bottleneck, we established a dual-enzyme coupling strategy by introducing formate dehydrogenase (FDH) for in situ cofactor regeneration. This design enabled efficient steroid hydroxylation, giving a 98.3% conversion at 20 mM 4-AD. When combined with high-density fermentation and fed-batch feeding, the engineered strain achieved a substrate processing capacity of 80 mM and a spatiotemporal yield of 42.8 mM/(L·day). This study provides an integrated enzymatic and bioprocess solution for improving whole-cell steroid hydroxylation efficiency and offers a practical basis for the scalable biosynthesis of 9α-OH-AD.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2611 - 2624"},"PeriodicalIF":3.4,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Microstructural Regulation of Ionic Transport in LiCoO2 Cathodes for Lithium-Ion Batteries: A Stochastic Reconstruction and Random-Walk Simulation Study","authors":"Guoling Zhang, Yihao Jiang, Qinan Chen, Haisen Zhang, Xin Xing, Lingmei Yang, Hao Wang","doi":"10.1007/s11814-026-00726-y","DOIUrl":"10.1007/s11814-026-00726-y","url":null,"abstract":"<div>\u0000 \u0000 <p>Lithium-ion transport in LiCoO₂ composite cathodes is strongly governed by the complex three-phase microstructure composed of active material (AM), carbon-binder domain (CBD), and pore space. However, the independent effects of key structural parameters on ion transport remain insufficiently quantified. In this work, a statistically equivalent three-dimensional microstructure of LiCoO₂ cathodes was reconstructed using a stochastic method, and a random-walk simulation was employed to evaluate the effective diffusivity and tortuosity. The influences of porosity, CBD content, AM particle size, and particle size distribution were systematically investigated. The results show that increasing porosity from 0.20 to 0.60 significantly enhances ion transport, with the effective diffusivity increasing from 0.109 to 0.465 and tortuosity decreasing from 2.148 to 1.278. In contrast, higher CBD content compresses pore channels and increases transport resistance. Enlarging AM particle size improves pore connectivity, leading to increased diffusivity and reduced tortuosity. Moreover, a broader particle size distribution further enlarges characteristic pore size and slightly enhances ion transport. These findings quantitatively reveal the independent roles of key microstructural parameters and provide insights for optimizing electrode design toward improved ion transport performance.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2693 - 2706"},"PeriodicalIF":3.4,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Indirect Electrochemical Sensing of the L-abrine Biomarker of Abrin Toxin Via Enzymatic Oxidation of N-methyl-L-tryptophan","authors":"Joon-Hyung Jin","doi":"10.1007/s11814-026-00732-0","DOIUrl":"10.1007/s11814-026-00732-0","url":null,"abstract":"<div><p>The biotoxin abrin, if inhaled or ingested, can be fatal to humans within several days. Because of the initial flu-like symptoms and the lack of analytical technologies for determining abrin poisoning, the high possibility of misdiagnosis makes this biochemical weapon particularly threatening. This urged us to develop a sensing device for real time monitoring of abrin poisoning. We introduce an enzyme-linked electrochemical sensor for the detection of the chemical marker of abrin poisoning, known as N-methyl-L-tryptophan (MT) or more commonly referred to as L-abrine. Indium tin oxide (ITO) was employed as the electrode substrate for immobilization of the enzyme methyl tryptophan oxidase (MTOX), which is selective for the MT substrate. The MTOX-immobilized ITO electrode obtained <i>via</i> the amino-glutaraldehyde cross-linking chemistry exhibited a sensitivity of 23.3 ± 1.28 µA per decade concentration of MT in a linear detection range from 98.1 pM to 1.17 µM (pH 7 in phosphate-buffered saline), and the detection limit was 22.7 pM. Each of the electrode modification steps were verified by electrochemical impedance spectroscopy, cyclic voltammetry, and Fourier transform-infrared spectroscopy. The approximate amount of MTOX immobilized on a 1 cm<sup>2</sup> ITO substrate was determined by cyclic voltammetry in a phosphate buffered saline solution at neutral conditions, revealing 3.3 ± 0.46 µC which is equivalent to 11.4 pmole of MTOX. With this MT detection strategy in hand, we look to further optimize our approach toward a rapid clinical diagnostic tool.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2625 - 2633"},"PeriodicalIF":3.4,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-026-00732-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Role of Hydroxyethyl Cellulose in Enhancing Network Cohesion and Physicochemical Stability of Multicomponent Soft Matrix","authors":"Jeong Uk Yu, Sang Wook Kang","doi":"10.1007/s11814-026-00727-x","DOIUrl":"10.1007/s11814-026-00727-x","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, we investigate the role of hydroxyethyl cellulose (HEC) as a multifunctional polymeric additive for enhancing the structural integrity and physicochemical stability of a multicomponent soft material system. The incorporation of HEC was achieved through controlled mixing and thermal processing to ensure homogeneous dispersion within the matrix. The presence of HEC led to pronounced improvements in water retention and resistance to environmental stress, which are attributed to the formation of an interconnected polymer network and strengthened intermolecular interactions. Fourier-transform infrared (FT-IR) spectroscopy revealed spectral shifts consistent with enhanced secondary interactions among matrix components, while thermogravimetric analysis (TGA) demonstrated a systematic increase in thermal stability with increasing HEC content. Scanning electron microscopy (SEM) showed the development of a cohesive, film-like surface morphology, indicating improved structural cohesion and reduced susceptibility to aggregation under prolonged exposure conditions. Quantitative analysis confirmed that higher HEC loadings result in proportional enhancements in moisture retention and thermal resistance without altering the fundamental chemical composition of the system. These results suggest that HEC functions as a network-forming stabilizer rather than merely as a rheological modifier, reinforcing both the structural and physicochemical robustness of multicomponent soft material matrices.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 on","pages":"2045 - 2055"},"PeriodicalIF":3.4,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hyang-Dong Kim, Seung Hun Baek, Jihyeon Shin, Jung Min Sohn
{"title":"A Study on MgnV2O5+n Oxygen Carrier for Chemical Looping Oxidative Dehydrogenation of Ethane","authors":"Hyang-Dong Kim, Seung Hun Baek, Jihyeon Shin, Jung Min Sohn","doi":"10.1007/s11814-026-00714-2","DOIUrl":"10.1007/s11814-026-00714-2","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates a series of Mg<sub>n</sub>V<sub>2</sub>O<sub>5+n</sub> (<i>n</i> = 1, 2, 3) oxygen carriers referred to as MV1, MV2, and MV3 for chemical looping oxidative dehydrogenation (CL-ODH). The materials were synthesized via a sol-gel method, and their structural, redox, and catalytic properties were evaluated over 10 cycles. After cycling, both MV1 and MV2 exhibited the formation of secondary phases (MgV<sub>3</sub>O<sub>8</sub> and Mg<sub>2</sub>V<sub>6</sub>O<sub>17</sub>, respectively), while MV3 retained its framework. Among the samples, MV2 demonstrated notable catalytic performance, achieving 85% ethylene selectivity and 14.5% ethylene yield. This performance is primarily attributed to the balanced redox characteristics of the Mg<sub>2</sub>V<sub>2</sub>O<sub>7</sub>-based framework, accompanied by structural modification during cycling.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2635 - 2645"},"PeriodicalIF":3.4,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Siti Nurfazilah Awang, Norazzizi Nordin, Azizul Hakim Lahuri, Abhijit Maiti, Nurul Izzah Zainol, Saramarlina Ayuni Sakoree Sayo, Wan Zurina Samad
{"title":"Electrochemical Degradation of Synthetic Wastewater Containing Reactive Red 4 Using Mixed Metal Oxide Composite Electrodes","authors":"Siti Nurfazilah Awang, Norazzizi Nordin, Azizul Hakim Lahuri, Abhijit Maiti, Nurul Izzah Zainol, Saramarlina Ayuni Sakoree Sayo, Wan Zurina Samad","doi":"10.1007/s11814-026-00716-0","DOIUrl":"10.1007/s11814-026-00716-0","url":null,"abstract":"<div><p>The textile industry is a major contributor to global water pollution due to the release of recalcitrant dye effluents and large volumes of wastewater, with an estimated 10–15% of dyes lost through effluent streams. Such contamination diminishes water quality and creates anoxic conditions that threaten aquatic ecosystems. Electrochemical treatment has emerged as an efficient and environmentally friendly method for wastewater remediation, offering simple process control through adjustable operational parameters (such as applied voltage, dye concentration, pH, type and concentration of supporting electrolyte). Mixed metal oxide (MMO) electrodes are particularly attractive owing to their catalytic activity, stability, and corrosion resistance. However, the reliance on noble metal oxides such as TiO₂, RuO₂, and IrO₂ raises costs, limiting large-scale applications. This study aimed to fabricate cost-effective MMO composite electrodes and evaluate their performance in degrading Reactive Red 4 (RR4). Three composite electrodes namely CuO-PbO₂/Ni, CuO-NiO/Ni, and CuO-NiO-PbO₂/Ni were successfully synthesized via electrodeposition technique. ATR-FTIR, XRD, and EDX analyses confirmed the formation of metal oxides on the electrode surfaces. Under optimized electrolysis conditions (500 ppm RR4, 0.1 M NaCl, 10 V, pH 6.88, stainless-steel cathode), CuO-PbO₂/Ni and CuO-NiO/Ni electrodes achieved 99.80% and 98.27% degradation within 10 min, respectively, while the CuO-NiO-PbO₂/Ni electrode required 15 min to reach 99.91%. Reusability tests showed stable performance, with all electrodes maintaining ~ 100% degradation over five consecutive cycles. Overall, the findings demonstrate that MMO composite electrodes can be fabricated as low-cost electrodes with excellent pollutant removal efficiency and long-term stability, making them promising candidates for sustainable wastewater treatment.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 10","pages":"2663 - 2682"},"PeriodicalIF":3.4,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seongbin Kang, Jueun Kim, Eunjeong Song, Hyeyoung Shin, Mihee Park, Minjoon Park
{"title":"Regulating Zinc Nucleation via KOH-Etched and Cu-Coated Carbon Felt for Stable Zinc–Vanadium Redox Flow Batteries","authors":"Seongbin Kang, Jueun Kim, Eunjeong Song, Hyeyoung Shin, Mihee Park, Minjoon Park","doi":"10.1007/s11814-026-00722-2","DOIUrl":"10.1007/s11814-026-00722-2","url":null,"abstract":"<div>\u0000 \u0000 <p>To mitigate zinc dendrite growth at the negative electrode of zinc–vanadium redox flow batteries, a KOH-etched and Cu-coated carbon felt was employed and systematically compared with pristine carbon felt. The electrochemical properties of the modified electrode were evaluated using cyclic voltammetry and electrochemical impedance spectroscopy, revealing a reduced zinc nucleation overpotential, enhanced peak current, and decreased interfacial resistance. Furthermore, zinc symmetric cell and full-cell charge–discharge tests demonstrated significantly improved cycling stability and reduced overpotential. The full cell employing the modified electrode delivered an average Coulombic efficiency (CE) of 100% and an average energy efficiency (EE) of 87.292% over 100 cycles, confirming the effectiveness of the surface modification in suppressing zinc dendrite growth and enhancing overall battery performance.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2557 - 2563"},"PeriodicalIF":3.4,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}