Article
Chemistry, Physical
Daniela Sayah, Tarek H. Ghaddar
Summary: Dye-sensitized solar cells have shown remarkable efficiency levels, making them promising for indoor applications. However, long-term stability is a critical aspect that needs to be addressed. This study successfully improved the performance and stability of DSC devices by using a new solvent and additives.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Fatima Santos, Carolina Hora, Dzmitry Ivanou, Adelio M. Mendes
Summary: Due to their high power conversion efficiency under indoor light, dye-sensitized solar cells (DSSCs) are considered a promising energy technology for future IoT devices and wireless sensors. Monolithic design DSSCs offer advantages in commercial production, such as straightforward processing, low cost, and compactness.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Fatima Santos, Jorge Martins, Jeffrey Capitao, Seyedali Emami, Dzmitry Ivanou, Adelio Mendes
Summary: Dye-sensitized solar cells (DSSCs) are a promising technology for wireless powering of low-consuming electronics and sensor nodes of the internet of things (IoT). This study achieved highly stable cobalt-mediated monolithic DSSCs through encapsulation using a glass-frit sealant, eliminating extrinsic degradation factors.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
M. Z. Najihah, I. M. Noor, Tan Winie
Summary: This study investigates the use of acetone as the optimal solvent for extracting chlorophyll from Costus woodsonii leaves, and explores the performance of chlorophyll as a dye sensitizer for DSSC. By studying the adherence of chlorophyll pigment to the TiO2 surface and the movement of electrons at the interface, the highest efficiency of chlorophyll DSSC is achieved.
Article
Chemistry, Multidisciplinary
Waad Naim, Fionnuala Grifoni, Vijay Challuri, David Mathiron, Sylvain Ceurstemont, Pauline Chotard, Thomas Alnasser, Iva Dzeba, Nadia Barbero, Serge Pilard, Claudia Barolo, Frederic Sauvage
Summary: In this research, a colorless hybrid electrolyte consisting of a thi-oate/iodide mixture was developed. The integration of this electrolyte into NIR-DSSCs resulted in improved power conversion efficiency (PCE) of up to 2.9% with a scattering layer and 2.1% in a transparent cell. It also demonstrated excellent stability with a PCE retention of 96% over 1,800 hours and achieved a high aesthetic level comparable to a double-glazed glass window.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Physical
Meghry Jilakian, Tarek H. Ghaddar
Summary: This paper presents an eco-friendly dye-sensitized solar cell (DSC) based on an aqueous electrolyte system, using a water-soluble polypyridyl copper complex as the redox couple. By coupling with a ruthenium-based dye, C106, a high photo-conversion efficiency of around 7% has been achieved under ambient light conditions. This opens up possibilities for the development of eco-friendly water-based DSCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Ana Belen Munoz-Garcia, Iacopo Benesperi, Gerrit Boschloo, Javier J. Concepcion, Jared H. Delcamp, Elizabeth A. Gibson, Gerald J. Meyer, Michele Pavone, Henrik Pettersson, Anders Hagfeldt, Marina Freitag
Summary: Dye-sensitized solar cells (DSCs) and dye-sensitized photoelectrochemical cells (DSPECs) have seen a revival in recent years as they offer unique properties such as low cost, non-toxic materials, colorfulness, transparency, and efficiency in low light conditions. This review covers advancements in DSC technology over the past decade, including theoretical studies, characterization techniques, materials, applications, and commercialization efforts by various companies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Energy & Fuels
Balasubramanian Karuppasamy, Balusamy Shenbagabalakrishnan, Venkatachari Gayathri
Summary: The photovoltaic performance of aqueous Al-ion electrolyte-based dye-sensitized solar cells was investigated, showing an efficiency 50% higher than the quoted value and an 80% enhancement with antimony-doped tin oxide compared to undoped tin oxide.
Article
Chemistry, Physical
Kicheon Yoo, Ashok Kumar Kaliamurthy, Jae-Joon Lee, Min Jae Ko
Summary: The performance of quasi-solid-state dye-sensitized solar cells (qs-DSSCs) using Polyvinylpyrrolidone/Polyethylene glycol (PVP/PEG) blends was investigated over a wide temperature range. The PVP/PEG blend exhibited low glass-transition temperature and high ionic conductivity, leading to high power conversion efficiency (PCE) at both low and ambient temperatures. Additionally, the qs-DSSC with PVP/PEG showed excellent long-term stability.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Ke Deng, Jacqueline M. Cole, Joshaniel F. K. Cooper, John R. P. Webster, Richard Haynes, Othman K. Al Bahri, Nina-Juliane Steinke, Shaoliang Guan, Liliana Stan, Xiaozhi Zhan, Tao Zhu, Daniel W. Nye, Gavin B. G. Stenning
Summary: The importance of the electrolyte/dye/TiO2 interface structures within DSC devices is discussed in this study, with a proposed method of using in situ neutron reflectometry to analyze these structures.
Article
Chemistry, Physical
Paolo Mariani, Antonio Agresti, Luigi Vesce, Sara Pescetelli, Alessandro Lorenzo Palma, Flavia Tomarchio, Panagiotis Karagiannidis, Andrea C. Ferrari, Aldo Di Carlo
Summary: The Z-type Dye Sensitized Solar Modules with screen printed graphene-based vertical interconnects prevent corrosion of interconnects in contact with electrolytic species and demonstrate a significant enhancement in power conversion efficiency compared to conventional Ag interconnects. The modules show a stability of 1000 hours under 85 degrees C stress test, paving the way for original design layouts with decreased dead area and increased generated power per aperture area.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Jayadev Velore, Sourava Chandra Pradhan, Thomas W. Hamann, Anders Hagfeldt, K. N. Narayanan Unni, Suraj Soman
Summary: The study evaluates the effect of illumination intensity on the photocurrent generation and its relationship to mass transport using the best cosensitized dye and copper electrolyte combination.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Zhemin Li, Qizhao Li, Chengjie Li, Yongshu Xie
Summary: Dye-sensitized solar cells (DSSCs) have the advantages of environmental friendliness, easy fabrication, and rich colors, making them promising for applications in architectural decoration and power supply for low energy devices. However, porphyrin dyes used in DSSCs still suffer from absorption defects and aggregation tendencies. In order to address these issues, various approaches have been developed to achieve panchromatic absorption and high efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Jiajia Gao, Aleksandar Tot, Haining Tian, James M. Gardner, Dibya Phuyal, Lars Kloo
Summary: Electrochemical impedance spectroscopy (EIS) was used to study the ageing mechanism of dye-sensitized solar cells (DSSCs). The findings showed that the lack of sufficient redox complexes was the main cause of decreased performance after ageing. Additionally, high-resolution fluorescence detected X-ray absorption spectroscopy (HERFD-XAS) revealed the reduction of Co(iii) to Co(ii) during ageing.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Review
Energy & Fuels
N. K. Farhana, Norshahirah M. Saidi, Shahid Bashir, S. Ramesh, K. Ramesh
Summary: Dye-sensitized solar cells (DSSCs) are a cost-effective alternative to conventional silicon solar cells, with high energy conversion efficiency, but stability issues with liquid-state DSSCs have led to the incorporation of polymer electrolytes. Various elements like host polymers, iodide salts, nanoparticles, and organic additives play a role in improving the performance and long-term stability of DSSCs, highlighting the importance of introducing additives for enhancing transport properties.
Article
Chemistry, Analytical
Wasinee Pholauyphon, Ravindra N. Bulakhe, Jedsada Manyam, Insik In, Peerasak Paoprasert
Summary: In this study, the electrochemical performance of a nanocomposite composed of TiO2 nanoparticles and carbon dots (CDs) derived from sodium polyacrylate was investigated. The addition of CDs to both the electrode and the electrolyte resulted in a significant enhancement of the specific capacitance, attributed to the synergistic effects of reducing series resistance, enhancing surface wettability, diffusion-controlled contribution, and pathways for ion diffusion. This strategy shows promise for developing high-performance, stable, and cost-effective energy storage devices.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Shrikant Sadavar, Navnath S. Padalkar, Rohini B. Shinde, Saji T. Kochuveedu, Umakant M. Patil, Akash S. Patil, Ravindra N. Bulakhe, Chandrakant D. Lokhande, Insik In, Rahul R. Salunkhe, Jayavant L. Gunjakar
Summary: An exfoliation-reassembling process was used to develop mesoporous intercalative nanohybrids of cationic 2-D cobalt-chromium-layered double hydroxide nanosheets and polyoxovanadate anions, which exhibited promising performance in asymmetric supercapacitors devices.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
G. Murali, Miyeon Lee, Jeevan Kumar Reddy Modigunta, Byungin Kang, Jiyeong Kim, Eunji Park, Hansol Kang, Jihoon Lee, Young Ho Park, Sung Young Park, Insik In
Summary: A simple, cheap, and environmentally friendly method was developed to fabricate antibacterial plastic films or fibers. This method involves decorating silver nanoparticles (AgNPs) on ultraviolet-ozone (UVO)-treated plastic films or fibers by dipping them into a silver nitrate solution. The AgNP-coated plastics show strong adhesion ability and high bactericidal activity, making them suitable for various applications in biological and environmental fields.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
G. Murali, Binhee Kwon, Hansol Kang, Jeevan Kumar Reddy Modigunta, Seongmin Park, Seongeun Lee, Hwiyoung Lee, Young Ho Park, Juhea Kim, Sung Young Park, Young-Jin Kim, Insik In
Summary: The direct use of conventional photosensitizers in photodynamic therapy (PDT) of cancer cells is hindered by their limitations in solubility, photostability, and aggregation tendency. To overcome these challenges, this study presents a facile method to encapsulate hematoporphyrin (HP) photosensitizer in carbon quantum dots (CQDs) through a one-step microwave reaction. The resulting HP-CQDs exhibit excellent solubility in water and high reactive oxygen species generation ability under deep red light, making them suitable for PDT-assisted eradication of human breast cancer cells (MCF-7).
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mizanur Rahman, Khaled Parvez, Giorgia Fugallo, Chaochao Dun, Oliver Read, Adriana Alieva, Jeffrey J. Urban, Michele Lazzeri, Cinzia Casiraghi, Simone Pisana
Summary: Two-dimensional materials, such as graphene, h-BN, and MoS2, were fabricated by inkjet printing and their thermal conductivities were measured. The results showed significant anisotropy in thermal conductivity along and across the basal plane, which is important for heat management applications. Additionally, the study revealed that the phonon spectrum for thermal transport along the plane is weakened by the quality of the thermal contact, while high-transmissivity interfaces contribute to the ultra-low conductivity across the plane.
Article
Materials Science, Multidisciplinary
Zhengyu Yan, Maria J. G. Guimarey, Khaled Parvez, Chaochao Dun, Oliver Read, Thomas Forrest, Jeffrey J. Urban, Amor Abdelkader, Cinzia Casiraghi, Wajira Mirihanage
Summary: Chemical exfoliation is a cost-effective and simple method for synthesizing graphene. In this work, we demonstrate the use of x-ray pair distribution function to study solution-processed graphene or other 2D materials with atomic resolution, directly in solution. The results confirm the production of single and few-layer graphene, and also reveal a considerable ring distortion caused by the interaction between solvent molecules and graphene nanosheets.
Article
Chemistry, Multidisciplinary
Tae Yun Ko, Daesin Kim, Seon Joon Kim, Hyerim Kim, Arun S. Nissimagoudar, Seung-Cheol Lee, Xiaobo Lin, Peter T. Cummings, Sehyun Doo, Seongmin Park, Tufail Hassan, Taegon Oh, Ari Chae, Jihoon Lee, Yury Gogotsi, Insik In, Chong Min Koo
Summary: The article introduces a novel ligand chemistry for MXenes using alkylated 3,4-dihydroxy-L-phenylalanine (ADOPA), which can functionalize MXene surfaces under mild reaction conditions. The ADOPA ligands form strong hydrogen-bonding and pi-electron interactions with the surface terminal groups of MXenes, while the hydrophobic fluorinated alkyl tail is compatible with organic solvents. This method produces stable colloidal solutions and liquid crystals of various MXenes in organic solvents, with excellent electrical conductivity, improved oxidation stability, and processability, enabling applications in flexible electrodes and electromagnetic interference shielding.
Article
Chemistry, Multidisciplinary
Heqing Ye, Eunji Park, Su Cheol Shin, G. Murali, Daehyun Kim, Jihoon Lee, In Ho Kim, Sung-Jin Kim, Se Hyun Kim, Yong Jin Jeong, Insik In
Summary: In this study, two types of UV curable high-k PSQs with different side chains were prepared. The structure of the side chains influenced the UV curing behavior and capacitance characteristics of the PSQ dielectrics. These findings demonstrate the potential of engineering PSQs for next generation integrated electronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kaustuv Roy, Dong-Hyun Lee, Benny Ryplida, Insik In, Suk Ho Bhang, Sung Young Park
Summary: This research proposes a cancer-selective self-reporting sensor based on a redox-responsive mineralized conductive hydrogel (M-Hydrogel), which possesses cancer-specific viscosity, adhesive strength, stretchability, tunable conductivity, and fluorescence. The self-reporting nature of the M-Hydrogel sensor is highlighted when in the vicinity of a high glutathione (GSH) level, confirming the dependence of self-recognizable behavior on the cancer microenvironment. The M-Hydrogel demonstrates excellent ex situ sensing with tumor ablation, enabling real-time analysis coupled with the upregulation of pro-apoptotic markers P53 and BAX in the tumor.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
C. Thota, G. Murali, R. Dhanalakshmi, M. Reddeppa, N. -H. Bak, G. Nagaraju, S. -G. Kim, J. K. R. Modigunta, Y. H. Park, Insik In, M. -D. Kim
Summary: In this study, 2D MXene nanosheets were spin-coated on 1D GaN nanorods to establish a van der Waals Schottky junction for efficient UV detection. The built-in electric field developed through this junction formation enhances the separation of electron-hole pairs, resulting in better UV detection performance compared to pristine GaN nanorods.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Environmental
Hyeong Jun Jo, Gwang-Bum Im, Akhmad Irhas Robby, Insik In, Suk Ho Bhang, Arnab Shit, Sung Young Park
Summary: The study introduces a cancer microenvironment-selective detection system using wireless pressure and strain sensing from a ROS-responsive carbon dot-embedded conductive hydrogel. The hydrogel's ROS scavenging activity and photothermal therapy eliminate tumor condition, and the hydrogel produces distinct electronic signals in the presence of cancer cells. The wireless sensor device allows for easy monitoring of conductivity and pressure on cellphones. Overall, this theragnostic sensor with direct anticancer activity via photothermal therapy is successfully constructed.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Young Ho Park, Dongyun Kim, Chaitanya B. Hiragond, Junho Lee, Jin-Woo Jung, Chang-Hee Cho, Insik In, Su-Il In
Summary: This study developed a highly stable photocatalyst for the reduction of CO2 to CO. By combining phase-controlled molybdenum sulfide with reduced titania, the obstacles of limited light absorption and poor charge separation were overcome, resulting in selective conversion of CO2.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Multidisciplinary
Ari Chae, G. Murali, Seul-Yi Lee, Jeonghwan Gwak, Seon Joon Kim, Yong Jin Jeong, Hansol Kang, Seongmin Park, Albert S. Lee, Dong-Yeun Koh, Insik In, Soo-Jin Park
Summary: Recently, MXene-based wearable hydrogels have become promising candidates for epidermal sensors due to their softness and unique properties. However, it is challenging to achieve reliable sensing performance and prolonged service life due to MXene oxidation in water-containing hydrogels. To address this issue, catechol-functionalized poly(vinyl alcohol) (PVA-CA)-based hydrogels are proposed to inhibit MXene oxidation, resulting in rapid self-healing and superior strain sensing behaviors. The PVA-CA-MXene hydrogel demonstrates potential for real-time motion monitoring and accurate signal classification using deep learning models.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Soyeon Kim, Canh Minh Vu, Suehyeun Kim, Insik In, Jihoon Lee
Summary: This study presents a facile strategy to improve the mechanical flexibility and electromagnetic interference (EMI) shielding of MXene films. The MX@DC film, created by crosslinking mussel-inspired molecule DC with MXene nanosheets, exhibited significantly enhanced toughness and Young's modulus compared to bare MXene films. The DC-coated MXene film also demonstrated improved EMI shielding effectiveness, making it suitable for practical applications.
Article
Nanoscience & Nanotechnology
Chandrasekaran Nithya, Jeevan Kumar Reddy Modigunta, Insik In, Soye Kim, Sukumaran Gopukumar
Summary: Hierarchical nanocomposites with surface active bonding features are efficient electrode materials for high-performance Li-/Na-/K-ion batteries. Tuning the physiochemical properties of these nanocomposites has a great impact on their electrochemical performance, attributed to the synergistic effect of different components. In this study, a hierarchical nanocomposite of bismuth sulfide (Bi2S3) nanorod bonded to reduced graphene oxide (rGO) matrix was synthesized and investigated as an anode material for potassium-ion batteries. The nanocomposite exhibited high reversible capacity, long-term cycling stability, and outstanding rate capability. The excellent performance was attributed to the active sites in rGO nanosheets that enhance electrical conductivity of Bi2S3 nanorods and prevent shuttle effect of polysulfide. The proposed phase transformation mechanism and structural stability of Bi2S3 nanorods were confirmed by ex-situ X-ray diffraction and high-resolution transmission electron microscopy analysis respectively. The surface dominated pseudocapacitive K-ion storage also played a major role in improving the electrochemical performance. A K-ion full cell was successfully assembled and showed stable cycling performance after 100 cycles at 1 C rate.
ACS APPLIED NANO MATERIALS
(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)
