Article
Materials Science, Multidisciplinary
Teck Lip Dexter Tam, Ming Lin, Albertus Denny Handoko, Jianwei Xu
Summary: In this study, sequential solution doping of a ladder-type poly(BBL) with different viologen radical cations was conducted to investigate the dopant-polymer interaction. It was found that the anion-π (radical) interaction between the counteranion and BBL negatively affected the charge transport properties and thermoelectric performance. The solution state of the viologen radical cation during the doping process, controlled by N-substitution bulkiness and counteranion Lewis basicity, played a crucial role in determining the conductivity and Seebeck coefficients of the doped BBL.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Filip Anies, Zhuoran Qiao, Mohamad Insan Nugraha, Aniruddha Basu, Thomas D. Anthopoulos, Nicola Gasparini, Martin Heeney
Summary: This study reports three novel n-type conjugated polymer semiconductors incorporating carborane in the polymer backbone and demonstrates their applicability in optoelectronic devices. The optoelectronic properties of para-, meta-, and ortho-carborane isomers were compared and similar energetic characteristics were found between the different polymers. The carborane unit in the polymer acts as a conjugation breaker, confining electron delocalisation to the conjugated moieties. Fabrication of all-polymer organic photovoltaic (OPV) devices and thin-film transistors (TFTs) showed differences in device performance, with the meta-carborane based polymer exhibiting superior performance in both OPV and TFT devices.
Article
Chemistry, Multidisciplinary
Pinyu Chen, Dongyang Wang, Liang Luo, Jinqiu Meng, Zhaoqiong Zhou, Xiaojuan Dai, Ye Zou, Luxi Tan, Xiangfeng Shao, Chong-an Di, Chunyang Jia, Hao-Li Zhang, Zitong Liu
Summary: This study reports the use of self-doped conjugated polymers in flexible thin-film transistors (OTFTs), which enables high unipolar n-type charge mobility, as well as good operational/ambient stability and bending resistance. New conjugated polymers PNDI2T-NM17 and PNDI2T-NM50 with different self-doping groups are designed and synthesized. The results show that the self-doped PNDI2T-NM17-based flexible OTFTs exhibit high charge-carrier properties and stability due to the appropriate doping level and intermolecular interactions.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yazhou Wang, Erica Zeglio, Lewen Wang, Shengyu Cong, Genming Zhu, Hailiang Liao, Jiayao Duan, Yecheng Zhou, Zhengke Li, Damia Mawad, Anna Herland, Wan Yue, Iain McCulloch
Summary: This study reports a series of novel donor-acceptor-conjugated polymers for n-type organic electrochemical transistors (OECTs) synthesized through an economic and environmentally friendly method. The polymers exhibit high electron mobility and ionic conductivity, resulting in high-performance OECTs. Analysis of the microstructure of the devices reveals the reasons behind their superior performance. The design strategy provides a metal-free and inexpensive route for synthesizing n-type OECTs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jinfeng Han, Yufeng Jiang, Emma Tiernan, Connor Ganley, Yunjia Song, Taein Lee, Arlene Chiu, Patty McGuiggan, Nicholas Adams, Paulette Clancy, Thomas P. Russell, Patrick E. Hopkins, Susanna M. Thon, John D. Tovar, Howard E. Katz
Summary: Most of the reported N-type high-conductivity organic polymers belong to short-range lamellar-stacked structures, which have lower thermoelectric parameters. In this study, an all-polymer N-type short-range lamellar-stacked thermoelectric system was described, with the highest conductivity of 78 S-1, power factor of 163 mu W m(-1) K-2, and maximum figure of merit of 0.53 at room temperature with a dopant/host ratio of 75 wt%. The promising performance was mainly attributed to the minor effect of the polymer dopant on the molecular arrangement, high doping capability, high Seebeck coefficient relative to conductivity, and atypical decrease in thermal conductivity with increased doping ratio.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xu Cao, Hongxiang Li, Junli Hu, Hongkun Tian, Yanchun Han, Bin Meng, Jun Liu, Lixiang Wang
Summary: We report the first near-amorphous n-type conjugated polymer with decent electron mobility, featuring a remarkably rigid, straight, and planar polymer backbone. The polymer is the alternating copolymer of double B <- N bridged bipyridine (BNBP) unit and benzobisthiazole (BBTz) unit. It shows a decent electron mobility of 0.34 cm(2) V-1 s(-1) in organic field-effect transistors. The excellent electron transporting property of the polymer is possibly due to the ultrahigh backbone stiffness, small pi-pi stacking distance, and high molecular weight.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Seol Baek, Donghoon Han, Seung-Ryong Kwon, Vignesh Sundaresan, Paul W. Bohn
Summary: Understanding the functional states of individual redox enzymes is vital for life. The use of zero-mode waveguides allows for studying single-enzyme reactions and has potential applications in molecular diagnostics.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jinqiu Meng, Jiawen Dou, Zhaoqiong Zhou, Pinyu Chen, Nan Luo, Yan Li, Liang Luo, Feng He, Hua Geng, Xiangfeng Shao, Hao-Li Zhang, Zitong Liu
Summary: The development of highly reliable conjugated polymers with high semiconducting performance is crucial for flexible electronics. In this study, we introduced a novel electron-accepting building block, called non-symmetric half-fused B?N coordinated diketopyrrolopyrrole (DPP) (HBNDPP), for amorphous conjugated polymers in flexible electronics. The rigid B?N fusion part of HBNDPP provides decent electron transport, while its non-symmetric structure allows the polymer to have multiple conformation isomers with flat torsional potential energies. This enables it to be packed in an amorphous manner, ensuring good resistance to bending strain and making it a potential candidate for future design of flexible electronic devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Hyeonjung Park, Youngkwon Kim, Donguk Kim, Seungjin Lee, Felix Sunjoo Kim, Bumjoon J. Kim
Summary: This study developed a series of fully degradable n-type CPs with high hydrolysis degradation capability and excellent electrical performance, providing useful guidelines for the design of fully degradable organic semiconductors.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Applied
Boseok Kang, Byung-il Choi, Min Je Kim, Shinyoung Choi, Moon Sung Kang, BongSoo Kim, Jeong Ho Cho
Summary: A polymer blend, similar to metal alloys, is created by blending two polymers together to obtain a material with different physical properties. The research investigates the impact of blending a flexible insulating polymer with rigid semiconducting polymers on charge transport characteristics. It finds that the electrical properties of the films are closely related to the polymer blend ratio, vertical segregation, and crystalline structures, and that the polymer backbone structure and blend ratio affect hole transport and electron transport differently. These findings are valuable for optimizing semiconductor-insulator polymer ink formulations for printed electronics.
Article
Nanoscience & Nanotechnology
Tong Chen, Hui-Bo Jiang, Kai-Bin Jiang, De-Lin Hu, Li-Zhen Cai, Ming-Sheng Wang, Guo-Cong Guo
Summary: The study synthesized the first photochromic semiconductive hydrogen-bonded organic framework with a wide range of photoelectric response, which has important practical applications in solar energy conversion and photodetection.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Jingyu Li, Changshuai Dong, Junli Hu, Jun Liu, Yichun Liu
Summary: The study presents a self-standing and flexible nanofiber mat of an n-type conjugate polymer prepared with electrospinning technology, showing high conductivity, Seebeck coefficient, and power factor, suitable for flexible thermoelectric devices.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Pranshula Panigrahi, Manoj Kumar Mallick, Smita Mohanty, Akshaya Kumar Palai
Summary: Two random terpolymers, DFC and EFC, based on N-naphthylcarbazole were successfully synthesized with good yield using C-H arylation technique. By adding an acceptor in the backbone absorption range, the energy levels and photophysical properties of the terpolymers can be efficiently adjusted. The molecular design and integrity of the terpolymers were studied using DFT calculations, and the bandgap results were confirmed by cyclic voltammetry and UV-Vis spectroscopy. The N-naphthylcarbazole based terpolymers showed good thermal stability and solubility, making them suitable for device manufacturing. The addition of an electron accepting unit in DFC expanded the absorption range up to 800 nm, resulting in a redshift of 235 nm compared to EFC. This narrowed the energy band gap, which is strategically important for improving the efficiency of photovoltaic devices. The DFC terpolymer, with complementary absorption, favorable internal morphology, and compact molecular packing, exhibited the highest power conversion efficiency of 4.07% and 3.49% with high short circuit current density (Jsc) when used as a barrier layer in DSSC, with both Pt and PEDOT: PSS counter electrodes.
Article
Nanoscience & Nanotechnology
Ting-Wei Chang, Yu-Ching Weng, Yi-Ting Tsai, Yuanwen Jiang, Naoji Matsuhisa, Chien-Chung Shih
Summary: The manipulation of the polymer backbone structure has a profound influence on the crystalline behavior and charge transport characteristics of polymers. This study proposes a universal strategy to boost the stretchability of polymers by incorporating a nonlinear conjugated linker (NCL) into the main chain. The introduction of the NCL disrupts the linearity and central symmetry of the conjugated polymer backbone, reshaping the polymer conformation and increasing its stretchability. This method is applicable to a wide range of donor-acceptor pair polymers and does not compromise the mobility of the polymer.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Mingi Sung, Taehong Kim, Hyo-Jin Ahn, Junghoon Lee
Summary: In this study, a photoanode was fabricated by adding a newly synthesized conjugated polymer as an additive to the n-type organic semiconductor. The addition of the polymer significantly enhanced the photocurrent density.
Article
Environmental Sciences
Grzegorz Spolnik, Paulina Wach, Zbigniew Wrobel, Witold Danikiewicz
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Multidisciplinary Sciences
Sriganesh Ramachandra Rao, Lara A. Skelton, Fuguo Wu, Agnieszka Onysk, Grzegorz Spolnik, Witold Danikiewicz, Mark C. Butler, Delores A. Stacks, Liliana Surmacz, Xiuqian Mu, Ewa Swiezewska, Steven J. Pittler, Steven J. Fliesler
Article
Biochemistry & Molecular Biology
Kacper Blaziak, Witold Danikiewicz, Mieczyslaw Makosza
Article
Energy & Fuels
Aleksandra Fabianczyk, Pawel Gnida, Pavel Chulkin, Slawomir Kula, Michal Filapek, Agata Szlapa-Kula, Henryk Janeczek, Ewa Schab-Balcerzak
Summary: The impact of different electron donors of 2-cyanoacrylic acid derivatives on thermal, photophysical and electrochemical properties was investigated, showing that certain molecules exhibited higher light-to-electricity conversion efficiency in dye-sensitized solar cells.
Article
Materials Science, Multidisciplinary
S. Kula, A. Szlapa-Kula, S. Krompiec, E. Schab-Balcerzak, A. Chrobok, P. Gancarz, M. Filapek
Summary: This study successfully synthesized six 2-pyranone derivatives, including electropolymerisable bithiophenyl's monomers, in a one-step reaction. The research found that the pyranone bridge has a significant impact on the stability, luminescent, and electrochemical behavior of the polymers. Experimental results were confirmed and evaluated through theoretical calculations and electrochemical impedance spectroscopy measurements.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Electrochemistry
Michal Filapek, Hubert Hellwig, Pawel Gancarz, Agata Szlapa-Kula
Summary: In this study, the influence of different doping agents on the physicochemical properties of a model organic semiconductor was comprehensively investigated with the assistance of DFT calculation. The research aimed to explore theoretical methods to enhance the conductivity of semiconductors by introducing charge carriers into the molecule structure.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Agriculture, Multidisciplinary
Viknasvarri Ayerdurai, Alvaro Garcia-Cruz, Joanna Piechowska, Maciej Cieplak, Pawel Borowicz, Krzysztof R. Noworyta, Grzegorz Spolnik, Witold Danikiewicz, Wojciech Lisowski, Agnieszka Pietrzyk-Le, Francis D'Souza, Wlodzinierz Kutner, Piyush Sindhu Sharma
Summary: A nucleobase-functionalized molecularly imprinted polymer (MIP) was synthesized for the selective determination of 7,8-DiMeIQx, a hazardous carcinogen found in meat and fish processed at high temperatures. The MIP chemosensor allowed for the selective impedimetric determination of 7,8-DiMeIQx with a limit of detection of 15.5 mu M, and was successfully applied for determination in pork meat extract.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Review
Chemistry, Physical
Stanislaw Krompiec, Aneta Kurpanik-Wojcik, Marek Matussek, Bogumila Golek, Angelika Mieszczanin, Aleksandra Fijolek
Summary: This review discusses the application of Diels-Alder cycloaddition (DAC) in synthesizing aromatic compounds. By introducing aromatic moieties, molecular structures with desired properties can be designed. DAC variants, combined with other synthetic tools, offer an efficient way of obtaining functionalized nanomaterials.
Article
Energy & Fuels
Agata Szlapa-Kula, Slawomir Kula, Patrycja Filipek, Stanislaw Krompiec, Michal Filapek
Summary: This paper presents a comprehensive study on the synthesis and physicochemical properties of new hexasubstitued benzene derivatives. The compounds are found to be stable up to 360 degrees C, and theoretical calculations reveal the influence of substituents on their stability, luminescence, and electrochemical behavior. Strong blue shifting of the pi-pi* transition is observed, and the derivatives with a Bt-core-Bt formula can be transformed into conducting polymers through electrochemical oxidation.
Article
Chemistry, Physical
Patrycja Filipek, Krzysztof Karon, Hubert Hellwig, Agata Szlapa-Kula, Michal Filapek
Summary: This study investigates the impact of intermolecular interaction on the aggregation-induced emission (AIE) phenomenon and the performance of organic light-emitting diodes (OLEDs). A group of compounds with identical energy parameters were designed and synthesized, and their optical, electrochemical, and aggregation-induced emission properties were studied. The results show that the AIE effect of these compounds is influenced by the solvent and can be controlled by introducing appropriate substituents.
Review
Biochemistry & Molecular Biology
Stanislaw Krompiec, Piotr Lodowski, Aneta Kurpanik-Wojcik, Bogumila Golek, Angelika Mieszczanin, Aleksandra Fijolek, Marek Matussek, Klaudia Kaszuba
Summary: This article presents the involvement of 1,3-dipolar cycloaddition, double bond migration, metathesis, and nitrile oxide in the syntheses of 2-isoxazolines. It also briefly introduces other methods for synthesizing isoxazolines. Different methods of nitrile oxide preparation, especially in situ-generated procedures, are presented. The application of various combinations of 1,3-dipolar cycloaddition with double bond migration and alkene metathesis in the syntheses of trisubstituted isoxazolines is highlighted.
Article
Chemistry, Multidisciplinary
Gana Sanil, Maciej Krzeszewski, Wojciech Chaladaj, Witold Danikiewicz, Iryna Knysh, Lukasz Dobrzycki, Olga Staszewska-Krajewska, Michal K. Cyranski, Denis Jacquemin, Daniel T. Gryko
Summary: This study presents the tandem intramolecular hydroarylation of alkynes accompanied by a 1,2-aryl shift. By utilizing the unique electron-rich character of the 1,4-dihydropyrrolo[3,2-b]pyrrole scaffold, pi-expanded, centrosymmetric pyrrolo[3,2-b]pyrroles were synthesized by reacting alkynes at the already occupied positions 2 and 5. The reaction only proceeds in the presence of cationic gold catalyst and produces unknown compounds with six conjugated rings. These synthesized compounds have potential applications in the creation of new materials with various functionalities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Marek Matussek, Aneta Kurpanik-Wojcik, Szymon Gogoc, Aleksandra Fijolek, Michal Filapek, Beata Naumczuk, Przemyslaw Data
Summary: Four new small organic molecules with 1,8-naphthalimide motifs were successfully synthesized and their optical, electrochemical and thermal properties were thoroughly investigated. The relationship between molecular structure and properties was considered through experimental and theoretical studies. The obtained dyes exhibit high thermal stability, reversible oxidation-reduction process, satisfactory optoelectronic properties and good solubility in organic solvents, making them suitable for application in SM-OLEDs technology.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Analytical
Magdalena Zimnicka, Elina Kalenius, Janusz Jurczak, Witold Danikiewicz
Summary: Interactions between anions and synthetic macrocyclic receptors, focusing on the application of ion mobility mass spectrometry (IM-MS) and theoretical calculations for structural analysis of macrocycle-anion complexes. Experimental and theoretical approaches were successfully used to describe the structural properties of various macrocycle-anion complexes.
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)
