Article
Chemistry, Physical
Jingyuan Zhao, Andrew F. Burke
Summary: This paper reviews research on increasing the energy density of electrochemical capacitors by focusing on increasing the maximum voltage of EC cells and the specific capacitance of their electrodes. The hybrid capacitor approach is considered the best method for developing ECs with high energy density, high power capability, and long cycle life.
ENERGY STORAGE MATERIALS
(2021)
Article
Engineering, Manufacturing
Valentin C. Menzel, Xuerui Yi, Franziska Bobl, Caroline Kirk, Neil Robertson, Ignacio Tudela
Summary: Thermal doping of polyaniline was achieved to fabricate electrodes using 3D printing technology, resulting in electrodes with high conductivity for electrochemical applications. The fabricated 3D printed electrochemical capacitors exhibited memristive behavior, suitable for applications such as artificial neural networks.
ADDITIVE MANUFACTURING
(2022)
Article
Energy & Fuels
Andrew F. Burke, Jingyuan Zhao
Summary: This paper provides an overview of research efforts focused on improving the performance of electrochemical capacitors by increasing cell voltage and specific capacitance of electrodes. It evaluates the potential of advanced electrode materials and ionic liquid electrolytes in improving EC performance, with a method included to calculate complete cell performance based on energy and pulsed power capability. Additionally, the paper includes test data for commercially available hybrid ECs and reviews the history of modern EC development.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Materials Science, Multidisciplinary
Sonali Verma, Sandeep Arya, Vinay Gupta, Sarika Mahajan, Hidemitsu Furukawa, Ajit Khosla
Summary: The increasing environmental problems and energy demands have stimulated research into safe and efficient energy sources. Supercapacitors have attracted great interest due to their high energy storage capacity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Kazuki Uchiyama, Takashi Yamamoto, Yasuaki Einaga
Summary: Silicon carbide (SiC) has excellent properties but lacks sufficient electrical conductivity for electrochemical applications, leading to the exploration of boron-doped SiC (SiC:B). The electrochemical properties of SiC:B were evaluated and found to have reactivity and sensitivity comparable to that of glassy carbon electrodes.
Article
Chemistry, Multidisciplinary
Shichen Xu, Mingmao Wu, Jin Zhang
Summary: This article summarizes the latest research progress on carbon-related electrode materials and analyzes the performance of ECs, and puts forward integrated perspectives on the further design and preparation of carbon-related ECs.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Analytical
Xiuchao Sun, Menglu Duan, Rongteng Li, Yuan Meng, Qiang Bai, Lina Wang, Manhong Liu, Zhugen Yang, Zhiling Zhu, Ning Sui
Summary: In this study, a two-dimensional ultrathin GDY/graphene nanostructure was utilized as an electrode material for electrochemical sensing. The graphene acted as a template for the growth of few-layered GDY and conductive layers. The GDY/G modified with hemin enzyme mimic showed excellent detection performance and demonstrated the feasibility of this electrochemical sensor as a wearable biosensor.
ANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
Joanna Breczko, Barbara Grzeskiewicz, Emilia Gradzka, Diana M. Bobrowska, Anna Basa, Jakub Goclon, Krzysztof Winkler
Summary: The study synthesized s-PANI-NTs decorated with GQDs and demonstrated their potential application as electrode materials in supercapacitors. The modification of s-PANI-NTs with GQDs improved the electrochemical properties of the synthesized material, leading to a higher specific surface area and specific capacitance of the composite material.
ELECTROCHIMICA ACTA
(2021)
Review
Chemistry, Multidisciplinary
Pin Ma, Daliang Fang, Yilin Liu, Yang Shang, Yumeng Shi, Hui Ying Yang
Summary: Researchers worldwide have made significant progress in electrochemical sodium-ion storage, with MXene-based materials being considered as one of the most potential electrode materials. The latest research work covers a wide range of applications of pure MXenes and MXene-based composites, exploring effective methods to enhance electrochemical performance.
Article
Nanoscience & Nanotechnology
Pratik Joshi, Shubhangi Shukla, Siddharth Gupta, Parand R. Riley, Jagdish Narayan, Roger Narayan
Summary: This study optimized the defect density of graphene by adjusting laser parameters, leading to improved detection limit for peroxide. Different treatment methods resulted in different graphene structures, with more holes leading to lower detection limits.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Physical
Niladri Talukder, Yudong Wang, Bharath Babu Nunna, Eon Soo Lee
Summary: Doping nitrogen into graphene can modulate its electronic properties, making it applicable as a catalyst in electrochemical systems. However, despite its significant prospects, a holistic understanding of the structural and functional properties of nitrogen-doped graphene is lacking, which hinders further improvement of this nanomaterial.
Article
Chemistry, Analytical
Nancy Magdy, Ahmed E. Sobaih, Lobna A. Hussein, Amr M. Mahmoud
Summary: This work developed simple, reliable, eco-friendly, and quantitative electrochemical sensors for detecting chlorhexidine in various dosage forms, including mouthwashes and intimate douches, as well as spiked human saliva. The sensors, based on carbon screen-printed electrodes and graphene nanocomposites, showed good sensitivity and selectivity.
Article
Electrochemistry
Sofia B. Davey, Amanda P. Cameron, Kenneth G. Latham, Scott W. Donne
Summary: This study examined the electrified interface between a planar non-porous glassy carbon electrode and a 0.5 M Na2SO4 aqueous electrolyte using SPECS and EIS techniques, providing insights into the variation of capacitance across the potential window and the role of EIS frequency in determining capacitance. The results highlighted the impact of mass transport on the amount of charge storage at the interface, showing the dynamics of interface formation and structure.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Yanling Shen, Huiying Ouyang, Weifeng Li, Yumei Long
Summary: A new strategy for trace lead ion determination based on hexagonal boron nitride with point defects has been developed. The defect-laden boron nitride-modified electrode shows enhanced electrochemical response towards lead ions, with low detection limit and wide linear concentration range. The engineered defects in the material play a pivotal role in the electrocatalytic reaction process, providing insight for constructing high-performance electrochemical sensors.
Article
Chemistry, Analytical
Florina Pogacean, Codruta Varodi, Lidia Magerusan, Raluca-Ioana Stefan-van Staden, Stela Pruneanu
Summary: Graphene-modified glassy carbon electrode was successfully prepared through the synthesis of graphene in an electrochemical cell. The electrode exhibited higher oxidation peak and lower potential compared to bare glassy carbon electrode. The graphene-modified electrode showed higher sensitivity and a wide linear range in the electrochemical detection of AZT.
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)