Sameera Sh. Mohammed Ameen , Khalid M. Omer , Fotouh R. Mansour , Alaa Bedair , Mahmoud Hamed
{"title":"Non-invasive wearable electrochemical sensors for continuous glucose monitoring","authors":"Sameera Sh. Mohammed Ameen , Khalid M. Omer , Fotouh R. Mansour , Alaa Bedair , Mahmoud Hamed","doi":"10.1016/j.elecom.2025.107894","DOIUrl":"10.1016/j.elecom.2025.107894","url":null,"abstract":"<div><div>Diabetes is an increasingly prevalent chronic condition affecting millions worldwide. Regularly monitoring blood sugar levels is essential for managing the disease effectively. The growing importance of wearable sensors across diverse sectors lies in their ability to non-invasively monitor health parameters, support disease management, improve safety, and offer valuable research insights. Non-invasive blood glucose monitoring has become a global focus of research, offering hope for many patients. Continuous glucose monitoring surpasses the limitations of traditional finger-stick tests, enabling timely interventions for better management. This review article examines recent progress and obstacles in developing non-invasive epidermal electrochemical glucose sensors. It explores methods utilizing biological fluids such as skin interstitial fluid, sweat, tears, and saliva, highlighting both advantages and limitations in device advancements. Furthermore, the review outlines future directions in glucose detection technology and its potential to enhance patients' quality of life.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"173 ","pages":"Article 107894"},"PeriodicalIF":4.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Esha Ghazanfar , Hajira Zahoor , Nasser S. Awwad , Hala A. Ibrahium , Sadullah Mir , Ishtiaq Ahmed
{"title":"Ternary composites based next-generation supercapacitors electrode material: Emerging trends","authors":"Esha Ghazanfar , Hajira Zahoor , Nasser S. Awwad , Hala A. Ibrahium , Sadullah Mir , Ishtiaq Ahmed","doi":"10.1016/j.elecom.2025.107893","DOIUrl":"10.1016/j.elecom.2025.107893","url":null,"abstract":"<div><div>The rapid advancements in energy storage and electronic applications have driven extensive research on conducting polymers, metal oxides, and carbonaceous materials due to their exceptional electrochemical and structural properties. Their unique physicochemical properties, such as high electrical conductivity, redox activity, and tunable surface chemistry, make them ideal candidates for supercapacitors, batteries, and sensors. Recent developments have focused on optimizing their synthesis, morphology, and hybridization to enhance conductivity, charge storage capacity, and long-term stability. Innovative strategies, including Nano structuring, doping, and surface engineering, have led to significant improvements in electrochemical performance. Furthermore, the integration of these materials into hybrid architecture has shown remarkable synergy, offering superior energy storage capabilities for supercapacitors and batteries. The CPs exhibit better conductivity and high theoretical capacitance but due to their cyclic instability, carbonaceous materials like graphene oxide are often reinforced with CPs. Still, the challenge of enhanced energy density cannot be addressed by binary composite and the need for ternary composite arises. Due to the outstanding specific capacitance of 100–2000 F/g with their redox activities the TMO are prominent electrode materials. This review highlights the importance of conducting polymers nanocomposites reinforced with graphene oxide and transition metal oxides in boosting electrical conductance, surface area, and charge storage ability of supercapacitors. Moreover, this review includes the latest literature and future opportunities in the emerging field of advanced electrode materials for supercapacitors. The review aims to offer valuable insights into the rational design of hybrid materials for next-generation energy storage technologies.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"174 ","pages":"Article 107893"},"PeriodicalIF":4.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Recycled niobium oxide nanochannels from spent lithium-ion batteries: Enhanced performance for supercapacitor applications","authors":"Yeonjin Kim, JeongEun Yoo, Kiyoung Lee","doi":"10.1016/j.elecom.2025.107892","DOIUrl":"10.1016/j.elecom.2025.107892","url":null,"abstract":"<div><div>Lithium-ion batteries (LIBs) are essential for modern energy storage but pose significant environmental and safety challenges due to the increasing volume of spent batteries. This study explores the reutilization of niobium oxide nanochannels (NONCs), initially employed as LIB anodes, as electrodes for supercapacitors. NONC electrodes, fabricated via electrochemical anodization, underwent structural and crystallographic transformations during charge-discharge cycling. The key findings demonstrate that these transformations, including an amorphous-to-crystalline phase transition, significantly improved ion transport efficiency and enhanced specific capacitance from 6.30 mF cm<sup>−2</sup> to 18.54 mF cm<sup>−2</sup>. Highly crystalline NONC structures exhibited superior stability, maintaining their morphology and active surface area, thereby optimizing charge storage mechanisms. In contrast, substantial structural changes resulted in decreased capacitive performance due to a reduction in surface area and an increase in diffusion-controlled contributions. The study underscores a sustainable strategy for reusing LIB materials, highlighting the potential of waste NONC electrodes for high-performance supercapacitor applications. By bridging the gap between recycling and advanced energy storage, this work supports the principles of a circular economy, offering a scalable solution to LIB waste management. These findings provide valuable insights into the relationship between material properties, structural integrity, and electrochemical performance, contributing to the development of sustainable energy technologies.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"173 ","pages":"Article 107892"},"PeriodicalIF":4.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries","authors":"Kodai Moriya, Shinichi Kumakura, Eun Jeong Kim, Ryoichi Tatara, Shinichi Komaba","doi":"10.1016/j.elecom.2025.107891","DOIUrl":"10.1016/j.elecom.2025.107891","url":null,"abstract":"<div><div>P′2-Na<sub>2/3</sub>MnO<sub>2</sub> is one of the promising candidates of high-capacity positive electrode material showing >200 mAh g<sup>−1</sup> for Na-ion batteries. However, it suffers capacity decay during electrochemical cycling. In this study, we used Sc<sup>3+</sup> ions ([Ar]4s<sup>0</sup>3d<sup>0</sup>) as a dopant for P′2-Na<sub>2/3</sub>MnO<sub>2</sub> and successfully synthesized series of doped materials, P′2-Na<sub>2/3</sub>[Mn<sub>1-<em>x</em></sub>Sc<sub><em>x</em></sub>]O<sub>2</sub>. Electrochemical cycle stability of the Sc doped samples in Na cells is successfully improved by the doping without sacrificing reversible capacity. Since Sc<sup>3+</sup> ion having no 3d-electrons can be partially substituted for Jahn-Teller active Mn<sup>3+</sup> ions ([Ar]4s<sup>0</sup>3d<sup>4</sup>), loss of the crystallinity over cycling is mitigated through suppressing the structural transformation including Na/vacancy ordering. The finding provides the insight to design the long-life layered cathode materials for Na-ion batteries.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"174 ","pages":"Article 107891"},"PeriodicalIF":4.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan-Ming Jia, Fu Yang, Li-Juan Sun, Zhi-Yan Bai, Yu-Long Xie
{"title":"Self-supported and integrated Co3Al-layered bimetallic hydroxide nanoribbons on nickel foam enable efficient electrocatalytic water decomposition","authors":"Yan-Ming Jia, Fu Yang, Li-Juan Sun, Zhi-Yan Bai, Yu-Long Xie","doi":"10.1016/j.elecom.2025.107890","DOIUrl":"10.1016/j.elecom.2025.107890","url":null,"abstract":"<div><div>The key to water decomposition in green hydrogen production is an electrode with high catalytic activity and stability. In this paper, a highly efficient integrated Ni/Co<sub>3</sub>Al-LDH/NF nanoribbon electrocatalyst was synthesized using a one-step hydrothermal strategy for total hydrolysis. Ni/Co<sub>3</sub>Al-LDH/NF exhibited excellent electrocatalytic performance in OER with a low overpotential (346 mV at 100 mA·cm<sup>−2</sup> current output) and a small Tafel slope (38 mV·dec<sup>−1</sup>). In HER overpotential of 164 mV at 10 mA·cm<sup>−2</sup> and a Tafel slope of 101 mV·dec<sup>−1</sup> with excellent durability. The increase in activity can be attributed to the synergistic effect between the fine-tuning of the electronic structure provided by the nanoribbons and the electrochemically active surface provided by in situ growth.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"173 ","pages":"Article 107890"},"PeriodicalIF":4.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinxin Cao , Shixuan Mei , Jinjin Hao , Qikun Jia , Bolin Qin , Zhikuan Xu , Fei Lv , Kuanwei Zhang , Xueli Nan
{"title":"Pulsed power capacitor design based on 3D inkjet printing","authors":"Xinxin Cao , Shixuan Mei , Jinjin Hao , Qikun Jia , Bolin Qin , Zhikuan Xu , Fei Lv , Kuanwei Zhang , Xueli Nan","doi":"10.1016/j.elecom.2025.107876","DOIUrl":"10.1016/j.elecom.2025.107876","url":null,"abstract":"<div><div>This paper presents a new method for manufacturing multilayer chip capacitors using three-dimensional inkjet printing technology. Compared with the traditional method of manufacturing multilayer chip capacitors, it enables the design of complex structures without molds. It has the advantages of high integration, integrated printing, and simple operation. In addition, the electrode structure of the conventional capacitor is optimized by replacing the original electrode tip with a ‘circular’ pressure-even electrode structure. The effects of different circle radii on the electric field distribution inside the capacitor were analyzed using Comsol simulation software. The results show that the homogeneous pressure electrode structure proposed in this paper can effectively improve the electric field concentration at the electrode tip of the capacitor. Finally, the capacitor was fabricated using 3D inkjet printing technology, and the capacitance value, voltage withstand value, and other parameters of the capacitor were measured. The capacitor with an even-pressure electrode structure was able to improve the breakdown voltage by about 22 %, which is consistent with the expected experimental results. The possibility of fabricating pulsed power capacitors using 3D inkjet printing technology was confirmed.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"173 ","pages":"Article 107876"},"PeriodicalIF":4.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry","authors":"Aldis Šilėnas, Laurynas Staišiūnas, Putinas Kalinauskas, Konstantinas Leinartas, Asta Grigucevičienė, Andžej Lučun, Skirmantė Tutlienė, Eimutis Juzeliūnas","doi":"10.1016/j.elecom.2025.107871","DOIUrl":"10.1016/j.elecom.2025.107871","url":null,"abstract":"<div><div>Oxide layers on silicon (Si) can effectively reduce the surface recombination velocity due to chemical and field-effect passivation, thereby increasing efficiency of PV devices. We propose simple experimental technique that provides information on interfacial Si/oxide charge. Here, interfacial charging in atmosphere of crystalline p-Si with thin hafnia layers deposited using atomic layer deposition and sol–gel techniques were studied by means of the transverse electric resistometry. The samples exhibited the current–voltage (I–V) characteristics, which were analogous to those known for a p-n junction when the Si surface is negatively charged. We also demonstrate the detection of charging effects in electrolyte by measuring the photo-induced capacitance, potential, resistance, and current. The charge transfer inhibition during hydrogen evolution reaction is shown to depend on interfacial charging effects rather than resistance of HfO<sub>2</sub> layer. The proposed methodologies can be extended to a wider range of passivating oxides on semiconductors.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"171 ","pages":"Article 107871"},"PeriodicalIF":4.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Effect of deformation temperature on microstructure and corrosion properties of hot-compressed 347H stainless steel","authors":"Qiushuang Wang , Ruidong Li , Junchen Li","doi":"10.1016/j.elecom.2024.107861","DOIUrl":"10.1016/j.elecom.2024.107861","url":null,"abstract":"<div><div>The corrosion resistance of 347H stainless steel after hot rolling or hot extrusion has always been a focus of attention in the thermoelectric field. This work uses electrochemical evaluation methods to study the corrosion behavior of 347H stainless steel after hot compression under different temperatures. The effects of dynamic recrystallization (DRX), grain size, and grain boundary (GB) on the corrosion behavior of the material were analyzed by microstructure detection. It is found that 347H stainless steel undergoes a valley stage of corrosion properties when deformed near 1050 ℃ with a constant strain rate. The changes of grain boundary density and Σ3 boundaries caused by deformation at different temperatures are the fundamental reasons for the fluctuation of corrosion properties. These results indicate that deformation temperature is an important factor controlling the corrosion resistance of hot- compressed 347H stainless steel. This study has important reference value for the development of hot deformation technology and the improvement of corrosion resistance of 347H stainless steel.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"171 ","pages":"Article 107861"},"PeriodicalIF":4.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Electrochemical production of methanol and hydrogen from biomass waste","authors":"Zichun Xiong , Kazuyo Kobayashi , Aki Miyawaki , Shinya Teranishi , Takashi Hibino","doi":"10.1016/j.elecom.2025.107862","DOIUrl":"10.1016/j.elecom.2025.107862","url":null,"abstract":"<div><div>This paper reports an electrochemical approach that uses unused or discarded biomass as a resource for renewable and sustainable methanol and hydrogen production. The biomass feedstocks tested were lignosulfonate, newspaper, pampas grass, and bamboo. Methanol was extracted through the demethylation of methoxy groups of lignin in biomass at the anode. The advantages of this method are that (1) electrolysis proceeds under mild conditions of 75 °C, atmospheric pressure, and relatively low voltage, (2) hydrogen is produced at the cathode, irrespective of the type of biomass, and (3) the residue after electrolysis can be used as fuel.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"171 ","pages":"Article 107862"},"PeriodicalIF":4.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rachel F. Taylor , Fernan Martinez-Jimenez , Bruce E. Logan
{"title":"Tuning initial pH to decrease salt ion transport in saltwater electrolysis","authors":"Rachel F. Taylor , Fernan Martinez-Jimenez , Bruce E. Logan","doi":"10.1016/j.elecom.2024.107858","DOIUrl":"10.1016/j.elecom.2024.107858","url":null,"abstract":"<div><div>Thin-film composite membranes are being studied as replacements to more expensive ion exchange membranes in saltwater electrolysis for carbon neutral hydrogen production. However, a persistent challenge is transport of salt ions between a contained anolyte and saltwater catholyte rather than water ions (H<sup>+</sup>, OH<sup>−</sup>). We used a validated Nernst Planck ion transport model in COMSOL Multiphysics to simulate how the initial electrolyte pH impacts total salt ion transport within the first two hours of electrolysis, when the greatest percentage of salts cross the membrane. At fixed current densities of 10 mA cm<sup>−2</sup> and 100 mA cm<sup>−2</sup>, setting an initial anolyte pH to 0 (rather than using a neutral pH) and catholyte pH of 14 achieved the goal of predominantly transporting water ions across the membrane, thereby accomplishing a substantial reduction in nitrate (substituting for chloride) ion transport. At the lower current density, setting the anolyte pH to 0 while leaving the catholyte pH neutral resulted in the same reduction of nitrate transport, with water ions carrying most of the charge. Thus, simply setting the solution initial conditions can substantially mitigate chloride ion transport from the catholyte to the anolyte, improving the feasibility of using saltwater electrolysis for green hydrogen production.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"171 ","pages":"Article 107858"},"PeriodicalIF":4.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143131971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}