Review
Chemistry, Physical
Nahush Modak, Vincent M. Friebe
Summary: Amperometric biosensing is a well-established method for measuring herbicides, using photosynthetic reaction centers. Recent advancements at the biohybrid interface have improved efficiency and stability. This review evaluates key performance metrics of herbicide biosensors for practical implementation.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Maria Pilo, Sylwia Baluta, Anna C. Loria, Gavino Sanna, Nadia Spano
Summary: This study presents a method for immobilizing glucose oxidase using an electrogenerated conducting film and enhancing the analytical performance of glucose detection by modifying it with graphene oxide. The biosensor with graphene oxide exhibited satisfactory values of linear dynamic range, limit of detection, and sensitivity.
Article
Chemistry, Analytical
Jing-Xian Wang, Xue-Jin Yang, Yan-Zhai Wang, Kai Yang, Huayou Chen, Yang-Chun Yong
Summary: A signal amplification system for electrochemical sensing was established using bio-nanohybrid cells based on bacterial self-assembly and biomineralization. This system showed high transmembrane electron transfer efficiency and achieved ultrasensitive detection of riboflavin.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Kai Yang, Zi-Jie Lu, Tian -Yu Zhu, Jing-Xian Wang, Fu-Qiao Yang, Syed Zaghum Abbas, Jun Zhou, Zhugen Yang, Jian-Li Mi, Sai Kishore Ravi, Yang-Chun Yong
Summary: A new approach to extend the cell sensing spectrum with bio-mineralized nanoparticles is developed, enabling whole-cell electrochemical detection of Vitamin B12. This nano-biohybrid design offers a new perspective on manipulating the microbial toolkit for an expanded sensing spectrum in whole-cell biosensors.
ANALYTICA CHIMICA ACTA
(2023)
Review
Chemistry, Analytical
Masoud Negahdary, Lucio Angnes
Summary: Recent research in electrochemical biosensors equipped with peptides and nanomaterials has been categorized, reviewed, and critically analyzed. These innovative biosensors have the potential to revolutionize biomedical diagnostics, with saving lives, time, and money being the main benefits. These biosensors have been divided into four main sections and evaluated based on their types and applications.
Article
Biophysics
Anabel Villalonga, Itziar Estabiel, Ana M. Perez-Calabuig, Beatriz Mayol, Concepcion Parrado, Reynaldo Villalonga
Summary: The novel amperometric aptasensor constructed for the specific detection of cardiac troponin I (cTnI) showed high sensitivity, specificity, and wide applicability for detecting the cardiac biomarker in a broad concentration range. It utilized a sandwich-type structure for detection and provided a detection limit of 0.6 pg/mL, along with high reproducibility and stability for quantifying cTnI in reconstituted human serum samples.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Analytical
Sevki Furkan Kucukayar, Veli Simsek, Mustafa Oguzhan Caglayan, Zafer Ustundag, Samet Sahin
Summary: In this study, carbonaceous materials were synthesized from typha tassel (TT) and pussy willow (PW) as biomass sources for enzymatic electrode modification. Different immobilization strategies using the carbonized TT (CTT) and PW (CPW) together with glucose oxidase (GOx), ferrocene (Fc), and Chitosan (Chit) were investigated. The results showed that Chit could preserve the activity of GOx, and when Fc was co-immobilized with GOx, better performance was achieved. The prepared electrodes demonstrated promising results for glucose biosensing. This study provides a comprehensive investigation of different immobilization strategies of GOx on carbonaceous electrodes and explores the potential use of biomass materials in bioelectronics approaches.
MICROCHEMICAL JOURNAL
(2023)
Article
Polymer Science
Geetu Paul, Sakshi Verma, Owais Jalil, Deeksha Thakur, Chandra Mouli Pandey, Devendra Kumar
Summary: This study developed a conducting paper biosensor based on PEDOT:PSS-grafted rGO-TiO2 nanohybrid, which achieved significant enhancements in conductivity by introducing dopants and nanohybrids, enabling accurate detection of glucose.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Chemistry, Analytical
Thenmozhi Rajarathinam, Minho Kwon, Dinakaran Thirumalai, Seonghye Kim, Seulah Lee, Jang-Hee Yoon, Hyun-jong Paik, Suhkmann Kim, Jaewon Lee, Hong Koo Ha, Seung-Cheol Chang
Summary: A new disposable amperometric biosensor for detecting sarcosine (a biomarker for prostate cancer) was designed and optimized, showing good performance with a dynamic linear range of 10e40 0 mM, sensitivity of 9.04 mA mM-1 cm-2, and a low detection limit of 0.66 mM. Its clinical applicability was tested in urine samples from prostate cancer patients and healthy controls, demonstrating satisfactory analytical recoveries and potential for rapid and non-invasive point-of-care testing for prostate cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Betty Edem Nugba, A. A. El-Moneim, Nahla O. Mousa, Ahmed Osman
Summary: By using a simple galvanic pulse electrodeposition approach, a unique nonenzymatic glucose amperometric electrode was developed based on 3D structure laser-induced graphene. The electrode exhibited high sensitivity, fast response time, wide linear range, and low detection limit, making it suitable for accurate glucose sensing in saliva.
Article
Chemistry, Analytical
Anton Popov, Ruta Aukstakojyte, Justina Gaidukevic, Viktorija Lisyte, Asta Kausaite-Minkstimiene, Jurgis Barkauskas, Almira Ramanaviciene
Summary: A novel thermal reduction protocol was used to synthesize reduced graphene oxide, which was then combined with conducting polymers to develop an amperometric glucose biosensor with a wide linear range and low limit of detection. The biosensor showed good selectivity, reproducibility, and stability, making it suitable for glucose determination in human serum. The PANI nanostructure and rGO dispersion showed promise for the construction of electrochemical glucose biosensors.
Article
Biochemistry & Molecular Biology
Owais Jalil, Chandra Mouli Pandey, Devendra Kumar
Summary: An ultrasensitive electrochemical biosensor was developed using MoS2@rGO nanohybrid as the sensing platform, allowing for label-free detection of EpCAM and successful detection of EpCAM antigen in different samples. The biosensor exhibited high selectivity, reproducibility, and stability.
BIOELECTROCHEMISTRY
(2021)
Review
Chemistry, Physical
Jinho Yoon, Joungpyo Lim, Minkyu Shin, Sang-Nam Lee, Jeong-Woo Choi
Summary: Researchers have focused on the application of graphene and MoS2 in the field of biosensors, conducting extensive studies in this area. By developing nanohybrid materials consisting of graphene and MoS2, various types of biosensors can be developed.
Article
Chemistry, Analytical
Filippo Silveri, Flavio Della Pelle, Annalisa Scroccarello, Qurat Ul Ain Bukhari, Michele Del Carlo, Dario Compagnone
Summary: In this work, a redox-graphene film with electron-mediating ability was integrated into a flexible pocket device to create a reusable biosensing platform. The film was obtained from graphite using catechin to assist the exfoliation process, resulting in electron mediating properties. The biosensing platform, made from office-grade materials, was fabricated using a cutter plotter and assembled by thermal lamination. An acetylcholinesterase-based inhibition assay was optimized on the pocket device to detect chlorpyriphos, an environmental pesticide. The platform allows for low overpotential detection with satisfactory sensitivity and can perform 5 consecutive inhibition assays while maintaining performance.
Article
Biophysics
Isabela A. Mattioli, Karla R. Castro, Lucyano J. A. Macedo, Graziela C. Sedenho, Mona N. Oliveira, Iris Todeschini, Phelipe M. Vitale, Suzete Cleusa Ferreira, Erika R. Manuli, Geovana M. Pereira, Ester C. Sabino, Frank N. Crespilho
Summary: The article introduces a graphene-based Electrical-Electrochemical Vertical Device (EEVD) point-of-care biosensor for serologic COVID-19 diagnosis. EEVD demonstrates advantages such as short analysis time (15 min), simple sample preparation, and a low limit of detection (1.0 pg mL(-1)). It meets the principles of robustness and accuracy, making it an ideal choice for pandemic control strategies.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Jeongyeon Lee, Yoonbin Kim, Soyong Park, Kang Ho Shin, Gun Jang, Min Jun Hwang, Daekyu Kim, Kyung-Ah Min, Ho Seok Park, Byungchan Han, Dennis K. P. Ng, Lawrence Yoon Suk Lee
Summary: In this study, researchers utilized polymeric disodium phthalocyanines (pNaPc) as anode materials for sodium-ion batteries, providing stable coordination sites for Na ions and enhancing stability at high current density. By varying the linker type, two pNaPc anodes with O- (O-pNaPc) and S-linkers (S-pNaPc) were prepared, and their structural and electrochemical properties were investigated. O-pNaPc showed improved redox kinetics and cycle stability, allowing the fabrication of a full cell with high energy density (288 Wh kg(-1)) and high power density (149 W kg(-1)) when coupled with Na3V2(PO4)(2)F-3/C cathode.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Environmental
Guanyao Wang, Qingyun Dou, Peixun Xiong, Qing Liu, Donghyun Min, Ho Seok Park
Summary: Recently, aqueous zinc-ion batteries (AZIBs) have gained attention for their high theoretical capacity, safety, and low cost. However, parasitic reactions and dendritic growth on zinc anodes have limited their practical application. In this study, the addition of supramolecular alpha-cyclodextrin (alpha-CD) to the electrolyte solution was found to regulate zinc ion deposition and suppress the formation of by-products. The alpha-CD additive promoted the epitaxial growth of zinc along a specific plane, leading to improved reversibility of zinc deposition and extended lifespan of the batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Guohao Yang, Chengang Pei, Fang Xu, Ho-Seok Park, Xu Yu, Huan Pang
Summary: The design of pseudocapacitive materials by coupling transition metal compounds with a conductive carbon matrix is crucial for enhancing the performance of supercapacitors. In this study, NiCoSe4-NCNFs were synthesized by carbonizing and selenizing polyacrylonitrile nanofibers, which exhibited excellent capacitive behaviors in 1 mol/L KOH electrolyte due to accelerated ion diffusion, enlarged active surface area, and modified surface chemistry at NiCoSe4/NCNFs interfaces. This work provides a novel strategy for constructing high-performance supercapacitors using transition metal selenides/carbon nanofibers hybrids.
CHINESE CHEMICAL LETTERS
(2023)
Article
Energy & Fuels
Dong Wook Kim, Beum Jin Park, Youngkwon Kim, Ho Seok Park
Summary: In this study, hierarchically structured Cr-doped NiCo-layered double hydroxides (LDHs) nanoplates chemically grown on the surface of nitrogen-doped reduced graphene oxide nanosheets (NiCoCr LDH/N-rGO) were reported for bifunctional electrocatalysts of RZABs. The electrocatalytic activity and kinetics of NiCoCr LDH/N-rGO for both ORR and OER were greatly improved due to Cr doping, resulting in lower overpotential and better Tafel's slope. As a result, the RZAB with NiCoCr LDH/N-rGO catalyst exhibited higher power density and better cycling stability compared to Pt/C+RuO2.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Ho Seok Park, Hwi Jung Kim, Jeong Seok Yeon, Hye Rin Park, Sang Joon Lee, Won Il Kim, Gun Jang
Summary: Recently, the abnormal charge storage mechanism of intercalation pseudocapacitance has attracted significant interest. This study demonstrates the fast and reversible intercalation pseudocapacitance of vanadium-substituted Keggin-type molybdenum-based polyoxometalates (XPMoV) and the support effect of cation exchange on morphological evolution and improved chemical and structural integrity. This research paves the way for the design of fast and reversible intercalation pseudocapacitance of polyoxometalates and the improvement of (electro)chemical and structural integrity through cation exchange chemistry.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Hyeonjeong Lee, Woonghee Choi, Ho Seok Park, Dong Wook Kim
Summary: In this paper, carbon nanofiber (CNF) was introduced as a conductive additive, and the porosity of the electrode was optimized by calendering to achieve a high loading density lithium polymer battery (LPB). A simple dispersion strategy was used to homogeneously disperse nanofiber additives in the electrode, resulting in high electronic conductivity. Calendering with optimized pressing degree improved lithium-ion transport and electron conduction in the LPB. The optimized pressing conditions achieved optimum electrode wettability and contact, leading to high performance of the LPB. Finally, at the optimized pressing degree, 90% cycle retention during 100 cycles and over seven-fold improvement in volumetric energy density were successfully demonstrated.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yoonbin Kim, Won Il Kim, Hyunyoung Park, Jun Su Kim, Hyungyu Cho, Jeong Seok Yeon, Jongsoon Kim, Young-Jun Kim, Jeongyeon Lee, Ho Seok Park
Summary: In this study, a multifunctional polymeric cobalt phthalocyanine (TCP) material was designed and applied in lithium-sulfur batteries, showing promising performance. The TCP coating on multiwalled carbon nanotubes exhibited cooperative redox mediating and lithiophilic effects, leading to improved conversion reaction kinetics of S cathodes, enhanced utilization efficiency of S, and inhibition of polysulfide shuttling. As a result, the S@TCP/MC cathode achieved high discharge capacity, high-rate capacity, high capacity retention, and high areal capacity.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yanhong Li, Lei Zhang, Hung-Yu Yen, Yucun Zhou, Gun Jang, Songliu Yuan, Jeng-Han Wang, Peixun Xiong, Meilin Liu, Ho Seok Park, Wenwu Li
Summary: This study successfully introduced liquid metallic Ga and highly reactive P into Si to create a cation-mixed disordered lattice and a unique Li storage mechanism. The resulting GaSiP2 electrodes showed high specific capacity and initial Coulombic efficiency, while the graphite-modified GaSiP2 achieved excellent capacity retention and high-rate capacity. The full cells using GaSiP2@C as anode material also exhibited high specific capacity after cycles, demonstrating the potential of GaSiP2 for high-performance LIBs.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Physical
Peixun Xiong, Yingbo Kang, Nan Yao, Xiang Chen, Haiyan Mao, Woo-Sung Jang, David M. Halat, Zhong-Heng Fu, Min-Hyoung Jung, Hu Young Jeong, Young-Min Kim, Jeffrey A. Reimer, Qiang Zhang, Ho Seok Park
Summary: A stable Zn5(CO3)2(OH)6 solid electrolyte interphase (SEI) was formed on the surface of Zn anodes using hybrid electrolytes, resulting in dendrite-free Zn plating/stripping. The Zn5(OH)6(CO3)2-contained SEI exhibited high ionic conductivity and fast Zn2+ migration, enabling the development of stable Zn-ion hybrid capacitors with high performance at various temperatures. The hybrid capacitors showed excellent capacity retention and Coulombic efficiency over a large number of cycles.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Peixun Xiong, Chuyuan Lin, Ying Wei, Jung-Hui Kim, Gun Jang, Keren Dai, Lingxing Zeng, Shuping Huang, Seok Joon Kwon, Sang-Young Lee, Ho Seok Park
Summary: In this study, a charge-transfer complex electrolyte additive, 7,7,8,8-tetracyanoquinodimethane (TCNQ), with high affinity for zinc was used to form a dense and robust interfacial complex layer on the zinc anode, suppressing the activity of H(2)O. The complex layer enabled the formation of a Zn-Zn-(TCNQ)(2) Ohmic contact interface, facilitating rapid ion/electron transport, improving electric field distribution, and preventing direct contact between active H2O and the zinc anode, resulting in a dendrite-free zinc anode and efficient zinc plating/stripping kinetics. As a result, the Zn||Zn symmetrical cell exhibited high plating/stripping reversibility for over 1000 hours at 20 mA cm(-2) and 5 mA h cm(-2), and a high depth of discharge of 43%. Furthermore, the Zn||MnO2 full cell demonstrated a high capacity of 143.3 mA h g(-1) at 2000 mA g(-1) even after 4000 cycles, with a capacity retention of 94.7% after returning to 100 mA g(-1).
ACS ENERGY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Jeong Hee Park, Harpalsinh H. Rana, Jun Su Kim, Jung Woo Hong, Sang Jun Lee, Ho Seok Park
Summary: In this study, an inorganic-organic double network gel electrolyte with high ion conductivity and mechanical integrity was demonstrated. The gel consisted of a silica particle network and a poly-2-hydroxyethylmethacrylate network, with confined 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquids. The gel showed excellent properties attributed to the optimal physical network formed by the silica nanoparticles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Kang Ho Shin, Donghwan Ji, Jae Min Park, Yun Sang Joe, Ho Seok Park, Jaeyun Kim
Summary: In this study, a structural composite hydrogel electrolyte with high mechanical strength, thermal stability, and the ability to operate in extreme conditions is designed for Zn metal batteries. The electrolyte exhibits high energy densities and uniform Zn deposition, as well as stable performance under mechanical stress and even in boiling and freezing water.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Sang Ha Baek, Jin Suk Byun, Hwi Jung Kim, Sang Joon Lee, Jae Min Park, Peixun Xiong, Yongchul G. Chung, Ho Seok Park
Summary: An organic-inorganic hybrid layer composed of polyoxometalate (POM) and poly(ethylene glycol) dimethyl ether (PEGDME) was demonstrated on the Zn metal surface to improve the reversibility and stability of Zn metal anodes. The POM-PEGDME-coated Zn metal anode achieved a high capacity retention in a battery cell paired with a β-MnO2 cathode, showing the potential of designing synergized organic-inorganic hybrid artificial layers for metal anode protection.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Won Il Kim, Jeong Seok Yeon, Hyunyoung Park, Hwi Jung Kim, Min Ju Kim, Jongsoon Kim, Ho Seok Park
Summary: A new cathode material, N,P-rGO/h-MoO2@S, has been developed to address the issues of lithium-sulfur batteries, improving their discharge capacity and cycling stability.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Electrochemistry
Jae Min Park, Sang Ha Baek, Won Il Kim, Sang Joon Lee, Girish Sambhaji Gund, Ho Seol Park
Summary: Hierarchically structured carbon architecture with large surface area and percolated electron/ion pathways shows promise as a cathode material for lithium-sulfur batteries. However, the synthesis of hierarchical carbonaceous materials is complicated and they often have weak interactions with lithium polysulfides, limiting battery performance. A microwave-assisted synthesis method was used to create carbon nanotubes grown onto steam-activated reduced graphene oxide (sGNC), resulting in a hierarchical carbon structure and nickel nanoparticles that inhibit lithium polysulfides. The sGNC-S cathode exhibited higher initial discharge capacity, better capacity retention, and lower decay rate compared to the sG-S cathode.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
