Article
Materials Science, Multidisciplinary
Hasan Hamedani, Amirmohammad Khosravi Ghasemi, Meysam Seyfi Kafshgari, Yalda Zolfaghari, Leila Asadi Kafshgari
Summary: Recent years have seen a growing demand for flexible and portable high-power, high-density electronic devices. Researchers are particularly interested in flexible energy storage devices such as supercapacitors and batteries. Metal-organic frameworks (MOFs) are attractive for electrochemical applications because of their high porosity and ability to store high charges. Nanocomposite materials based on MIL-100(Fe) were synthesized using Polyaniline and Graphene (Gr) nanosheets. Multiple characterization approaches were utilized. PANI/Gr/MIL-100(Fe) was reported as a supercapacitor electrode with capacitive energy storage properties for the first time. It exhibited a maximum specific capacitance of 638 F/g at 1 A/g in acidic electrolyte, along with the lowest charge transfer resistance among the compounds produced. Furthermore, a PANI/Gr/MIL-100/Active carbon (AC) asymmetric supercapacitor showed exceptional electrochemical performance, achieving a high energy density (53 Wh/kg) and a high-power density (1225 W/kg). This outstanding performance is attributed to the facilitated electron transport structure, large surface area, and synergistic effects between the three components. It indicates a promising future for flexible next-generation supercapacitors.
Article
Engineering, Electrical & Electronic
Xiangxiang Du, Shujun Liu, Qin Xu, Xuejun Shi
Summary: The MnO2 nanowires/polyaniline composite (MnO2NW/PANI) was prepared by synthesizing MnO2NW via hydrothermal method and then polymerizing aniline monomer on its surface. The composite showed a specific capacitance of 306.7 F/g, 28.4% higher than that of pristine MnO2. The enhanced capacitance was attributed to the reduced electric resistance within the composite and the synergistic effect between MnO2NW and PANI for fast ion/charge transfer. Moreover, the MnO2NW/PANI electrode exhibited stable cycle performance with 88.7% capacity retention after 5000 repeated cycles at a high current density of 5 A/g.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Electrochemistry
Sara Yaseen, Abdul Ghafar Wattoo, Abid Inayat, Tauseef Shahid, Mohammed Rafi Shaik, Mujeeb Khan, Zhenlun Song, Syed Mustansar Abbas
Summary: This study presents the synthesis of bimetallic oxide (NiO/Mn2O3) as a positive electrode material for supercapacitor applications. The optimized composition, structure, and morphology of the material result in exceptional electrochemical performance. The unique bipyramid-like morphology provides a large specific surface area and active sites for efficient ion transfer. The NiO-50 % Mn2O3 electrode exhibits the highest specific capacitance and long-term cycling stability, making it a promising candidate for supercapacitor electrodes.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
S. Ezhil Arasi, R. Ranjithkumar, P. Devendran, M. Krishnakumar, A. Arivarasan
Summary: The study reported the supercapacitive behavior of chemically synthesized cobalt vanadate nanostructures. Crystallographic information and optical response were investigated through various analytical techniques. The prepared Co3V2O8 showed specific capacitance value of about 790 F/g at 1 A/g current density and 90.1% capacitive retention after 10000 cycles, indicating its potential as an electrode material for future energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Engineering, Electrical & Electronic
Yuanqiang Zhu, Hui Xu, Jing Tang, Xudong Jiang, Yuanhai Bao, Yong Chen
Summary: The ternary hybrid material CF@gamma-MnO2/PANI exhibits high capacitance and cycling stability, making it a promising candidate for supercapacitor applications. The efficient utilization of MnO2 and PANI is achieved by supporting gamma-MnO2 nanoparticles on the surface of CF and coating them with PANI.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Eun-Bi Kim, Shaheer Akhtar, M. Shaheer Akhtar, Sadia Ameen
Summary: In this study, delafossite CuCrO2 nanoparticles were synthesized and investigated as a supercapacitor material. The non-annealed delafossite CuCrO2 nanoparticles exhibited outstanding electrochemical performance with high specific capacitance and cycling stability.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Bhanita Goswami, Chayanika Das, Debajyoti Mahanta
Summary: This study investigated the effect of organic dyes on the electrochemical performance of Fe3O4-polypyrrole nanocomposite in supercapacitor applications. Results showed that adsorption of organic dyes significantly improved the cyclic stability of the nanocomposite as electrode material.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Huabo Huang, Cheng Li, Jian Luo, Juan Huang, Peng Yu, Liang Li, Chuanxi Xiong
Summary: MnO2 composites, specifically the PANI/MnO2 composite, demonstrate promising potential as electrode materials for supercapacitors due to their low cost, environmental friendliness, and high electrochemical activity. The PANI/MnO2 composite, synthesized using PANI hydrogel as a substrate, exhibits a hierarchically porous structure with a large specific surface area and enhanced electron/ion conduction. This composite delivers wide potential window and high specific capacitances, making it a suitable candidate for symmetric supercapacitors. The study presents a novel approach to construct PANI/MnO2 nanocomposites with optimized electrochemical behavior.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Nikolaos Kostoglou, Christian Koczwara, Sebastian Stock, Christos Tampaxis, Georgia Charalambopoulou, Theodore Steriotis, Oskar Paris, Claus Rebholz, Christian Mitterer
Summary: The study investigates the potential applications of a nanoporous polymer-/polyaniline-derived activated carbon (PDAC) in hydrogen storage and supercapacitor energy storage. The PDAC demonstrates superior hydrogen adsorption performance and supercapacitor cell performance compared to conventional commercial activated carbon, attributed to the smaller pore sizes of the PDAC structure.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Hongyan Li, Qian Yang, Hongli Liu, Jing Li, Wenjin Yuan, Bo Zhang
Summary: This study introduced the folding and enhancement theory into the construction of graphene aerogels, achieving self-enhancement and enhanced electrochemical properties through the folding of graphene lamellae by copper ions and conversion to copper oxides. The molecular structure, surface microstructure, mechanical, and electrochemical properties of fGA/CuO were thoroughly studied using FTIR, XPS, SEM, BET, CV, GCD, and EIS techniques, demonstrating successful improvement in mechanical and electrochemical performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Polymer Science
Hossein Pahlavani, Javad Shabani Shayeh, Amideddin Nouralishahi, Maryam Sharifi Paroushi
Summary: In this study, the researchers investigated the enhancing effects of graphene porous on the supercapacitive performance of a polyaniline/graphene porous nanocomposite. The inclusion of graphene porous significantly increased the specific capacitance of the nanocomposite, while maintaining good electrochemical stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
V. Vimala, L. Cindrella
Summary: This study successfully synthesized polyaniline-chitosan composite and evaluated its electrochemical performance as a supercapacitor electrode material. The results show that the composite exhibits excellent charge storage capacity and cyclic stability, making it a promising electrode material for supercapacitor applications.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Sha Peng, Ben Liu, Xingying Zhang, Wenhui Li, Shaoyun Chen, Chenglong Hu, Xueqing Liu, Jiyan Liu, Jian Chen
Summary: This article introduces a PANI@PS/FTO electrode prepared using the Langmuir-Blodgett technique, which demonstrates high specific capacitance and rate capability, with capacitance retention ranging from 69.2% to 85.5%.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Nagaraju Macherla, Kuldeep Singh, Manjula Nerella, Kusum Kumari, Ram Gopal Reddy Lekkala
Summary: In this study, PANI nanostructures were successfully grown on S-doped reduced graphene oxide nanosheets using a facile hydrothermal method combined with soft template polymerization. The effect of different wt% of S-rGO on the structural, morphology, and electrochemical performance of the SPANI/S-rGO composites was evaluated. The resulting SPANI/S-rGO10 composite electrode material showed a high specific capacitance and cycling stability, making it a promising candidate for high-performance supercapacitors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Bin Zhang, Ping Liu, Zijiong Li, Xiaohui Song
Summary: A series of honeycombed perovskite-type Sr-doped LaNiO3 nanosheets were successfully synthesized with abundant porous structure, showing excellent electrochemical performance and high cycling stability. This novel electrode material exhibits promising potential for energy storage applications.
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)