Article
Chemistry, Physical
Kaelan Rorabeck, Igor Zhitomirsky
Summary: A new method for preparing Mn3O4-MCNT composites has been introduced in this study, showing enhanced electrochemical performance in supercapacitors. The method involves using salting-out aided extraction to achieve better mixing and co-dispersion of Mn3O4 and MCNT. This method overcomes limitations of other extraction techniques and opens up new possibilities for manufacturing nanocomposites with advanced functional properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
Nopparat Sangtong, Thanyalak Chaisuwan, Sujitra Wongkasemjit, Hatsuo Ishida, Wikrom Redpradit, Kessara Seneesrisakul, Uthen Thubsuang
Summary: This study developed an electrode material based on activated biocarbon from rubber wood sawdust waste using alkali activating agents. The impact of alkali metal atom sizes on pore structure was studied, as well as the influence of standard reduction potentials on electrochemical performance. The activated biocarbons showed microporous or mesoporous characteristics depending on the alkali activating agent used, with different specific surface areas and capacitance values.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Fitri Aulia Permatasari, Muhammad Alief Irham, Satria Zulkarnaen Bisri, Ferry Iskandar
Summary: The translated paragraph introduces carbon-based quantum dots (C-QDs) as materials for supercapacitors, with superior optoelectronic properties and great application potential, in either bare electrode or composite form to enhance supercapacitor performances. The review also highlights the latest progress and application prospects of C-QDs in the field of supercapacitors.
Article
Biochemistry & Molecular Biology
Kaelan Rorabeck, Igor Zhitomirsky
Summary: This study successfully fabricated Mn3O4-MWCNT composites for supercapacitor electrodes using a new salting-out method, achieving enhanced capacitive performance at high active mass loadings. The multifunctional properties of octanohydroxamic acid as a capping and dispersing agent, as well as a particle transfer agent, promoted particle dispersion and mixing during electrode fabrication.
Article
Materials Science, Ceramics
Hilal Pecenek, Sevda Yetiman, Fatma Kilic Dokan, M. Serdar Onses, Erkan Yilmaz, Ertugrul Sahmetlioglu
Summary: This study investigates the effect of carbon nanomaterials and MXene addition on MnO2 based supercapacitor electrodes, and finds that MXene based composite materials exhibit the highest specific capacitance and exceptional cycling efficiency. The favorable interaction between MnO2 and nanoscale materials enhances conductivity and surface area, leading to superior supercapacitor efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Suok Lee, Min-Cheol Kim, A-Rang Jang, Jung Inn Sohn, Jong Bea Park, Young-Woo Lee
Summary: This study synthesized novel spindle-shaped ferric oxyhydroxide nanoparticles with a unique hierarchical nanostructure and successfully applied them in electrode preparation, demonstrating high specific capacitance, outstanding cycling stability, and significant electrocatalytic activity for the oxygen evolution reaction.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Jishi Wei, Xiao Zhao, Xiaoxiao Yang, Shuaiqi Gao, Yahui Ji, Qingzhang Lv, Xianjun Wei
Summary: Carbon-quinhydrone composites, fabricated by embedding biomass activated carbon with quinhydrone molecules, show improved volumetric capacitance and energy density in supercapacitors. The participation of quinhydrone molecules contributes to higher pseudo capacitance, increased bulk density, faster charge transfer, and efficient charge storage.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Huaran Zhang, Zixu Wang, Xingxing Li, Mengxiang Zhu, Jinping Zhou
Summary: This study successfully prepared N, O co-doped hierarchical porous carbon material using chitin as a carbon source and KOH as an activator. The obtained material exhibited ultrahigh specific surface area and large pore volume, showing excellent electrochemical performance and making it an ideal material for high-performance supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Ruyi Zou, Lin Zhu, Lijun Yan, Bo Shao, Hui Cheng, Wei Sun
Summary: A meshy biomass carbon was prepared using kelp as the carbon precursor, and Co3O4 nanoparticles were modified on it to form a Co3O4@MBC composite. This composite exhibited excellent electrochemical performance with high specific capacitance and cycle stability. It can be used as an electrode for supercapacitors and has potential applications in efficient energy storage devices.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Mahmoud Awad, Igor Zhitomirsky
Summary: This study demonstrates the feasibility of using tetrahydroxy-1,4-quinone (THQ) and 2-hydroxy-1,4-naphthoquinone (HNQ) as capping agents in hydrothermal conditions, resulting in size reduction and multiple benefits for MnOx applications in supercapacitor cathodes. Electrochemical testing shows that the electrodes prepared with THQ and HNQ exhibit high activation rates, cyclic stability, and capacitance retention, with exceptional capacitance at a high sweep rate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Energy & Fuels
Dazhi Zhang, Peng Yang, Yixin Zhang, Honglai Liu, Yunhui Xu, Jianjun Wu, Peipei Li
Summary: Coupling carbon materials and metal oxide has been proven effective in promoting the energy storage performance of supercapacitor electrode materials. In this study, a novel pompon-like activated carbon/manganese dioxide nanosheet composite was successfully prepared via a facile and cost-efficient strategy. The as-prepared composite exhibited excellent electrochemical performance and showed great potential for practical applications in supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Jie Cheng, Sheng-Chun Hu, Guo-Tao Sun, Kang Kang, Ming-Qiang Zhu, Zeng-Chao Geng
Summary: By treating cotton stalk using one-step and two-step activation processes, activated carbons with varying specific surface areas, mesopores pore volumes, and specific capacitances were synthesized. Biomass-derived activated carbons exhibited better electrochemistry characteristics compared to biochar-derived activated carbons, making them promising materials for advanced energy storage applications in supercapacitors.
Article
Chemistry, Physical
Manoranjan Ojha, Billy Wu, Melepurath Deepa
Summary: The research investigates the impact of different electrolytes on the performance of a supercapacitor, with findings indicating that the aqueous H+-ion-based CSA electrolyte outperforms other electrolytes, displaying higher ionic conductivity and transport number for improved energy storage performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
A. A. Jadhavar, Nitin T. Shelke, M. A. Yewale, R. A. Kadam, S. L. Kadam, D. K. Shin
Summary: To meet global energy demands, the development of high-capacity electrochemical energy storage devices with advanced electrode materials is crucial. In this study, the binary metal oxide Co3V2O8 (CVO) was successfully synthesized using a hydrothermal method, and its physicochemical properties were characterized using various techniques. The results showed that CVO exhibited high specific capacitance and energy density, making it a promising material for supercapacitor electrodes.
SURFACES AND INTERFACES
(2023)
Article
Energy & Fuels
Wenhao Peng, Zilong Su, Jiajun Wang, Shuji Li, Kaixuan Chen, Ningning Song, Shiping Luo, Aijuan Xie
Summary: Spherical MnCoOx and MnCoOx-multi-walled carbon nanotubes (MnCoOx-MWCNTs) composites were synthesized and used as electrode materials for supercapacitors. The properties of different MnCoOx samples with various Co/Mn molar ratios and MnCoOx-MWCNTs samples with different MWCNTs qualities were evaluated using various electrochemical test methods. The results showed that the MnCoOx-MWCNTs composite with a Co/Mn molar ratio of 1:1 and 0.1 g MWCNTs exhibited a high discharge capacitance of 930.00 F g(-1) at a current density of 1.0 A g(-1). The specific capacitance retention rate of the optimal MnCoOx-MWCNTs composite remained at 88.2% after 5000 cycles at a current density of 8.0 A g(-1). Therefore, the MnCoOx-MWCNTs composite shows great potential as an electrode material for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
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)