Article
Chemistry, Multidisciplinary
Muhammad Bilal, Amna Altaf, Ehmen Bint-E-Khalid, Hafiza Komal Zafar, Nimrah Tahir, Ayman Nafady, Md A. Wahab, Syed Shoaib Ahmad Shah, Tayyaba Najam, Manzar Sohail
Summary: Developing an efficient and non-precious bifunctional catalyst for water splitting and organic effluent degradation is a challenging task. This study presents a highly efficient bifunctional nanocatalyst based on NiCo2O4, synthesized using a simple co-precipitation method. The optimized catalyst exhibited excellent catalytic activity for the electrochemical oxygen evolution reaction (OER) and simultaneous methylene blue (MB) dye degradation. The results suggest that this catalyst holds great promise for addressing the challenges of wastewater treatment and energy generation.
Article
Chemistry, Multidisciplinary
Subbukalai Vijayakumar, Ganesh Dhakal, Soo-Hyun Kim, Jintae Lee, Yong Rok Lee, Jae-Jin Shim
Summary: In this study, Zn-Co-S nanostrip cluster arrays were successfully synthesized on Ni foam through a two-step hydrothermal process. These arrays exhibited higher specific capacity and electrochemical performance compared to ZnCo2O4, showcasing their potential for hybrid supercapacitor applications.
Article
Chemistry, Inorganic & Nuclear
Wei Li, Tianqi Chen, Ao Li, Peng Shi, Ming Wu, Tingting Li, Hongwei Yue, Yifeng Chen, Baojun Huang, Xiaojie Lou
Summary: Novel Ni3Se2 nanowires were synthesized via a one-step hydrothermal reaction, demonstrating excellent energy storage performance in hybrid supercapacitors (HSCs), particularly in terms of long-term cycling stability and high rate capability.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Min Li, Yunyun Luo, Chen Jia, Qiankun Zhang, Guoxi Luo, Libo Zhao, Rabah Boukherroub, Zhuangde Jiang
Summary: In this study, bimetal nickel-cobalt phosphate nanostructures were successfully synthesized on nickel foam for hybrid supercapacitors by a facile one-step electrodeposition method. The optimized NiCoP/NF2 electrode exhibited excellent capacitive performance with high specific capacity, good rate performance, and high coulombic efficiency. The proposed electrodeposition synthesis process and the prepared NiCoP composites show great potential for applications in energy storage technology.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Bingcheng Sun, Fengjuan Miao, Bairui Tao, Yanchun Wang, Yu Zang, Paul K. Chu
Summary: The combination of NiCo2O4 and Pd nanoparticles results in a highly efficient and stable catalyst for hydrogen evolution reaction (HER). The 3D structure of NiCo2O4 and Pd nanoparticles synergistically improve the HER performance, with an overpotential of 69 mV at a current density of 10 mA/cm(2) and stability for 10 hours in alkaline environments. These materials provide valuable insights for future development of commercial hydrogen production.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
Zeynep Orhan, Sakir Aydogan, Hulya Ozturk Dogan
Summary: In this study, cobalt chromite/electro-reduced graphene oxide (CCO/ERGO) nanocomposites were fabricated on nickel foam electrode by a two-step synthesis method. The analytical and morphological structure of the CCO/ERGO nanocomposite was characterized using various techniques. The CCO/ERGO nanocomposite exhibited high specific capacitance and showed potential for future-generation supercapacitors applications.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Materials Science, Coatings & Films
Wadzanai Ndambakuwa, Yustinah Ndambakuwa, Jonghyun Choi, Ganga Fernando, Dipesh Neupane, Sanjay R. Mishra, Felio Perez, Ram K. Gupta
Summary: With advancements in technology, the demand for green energy production and storage has been increasing annually. Supercapacitors, particularly those utilizing nickel and cobalt-based materials, have shown significant potential for energy storage applications like water splitting and urea oxidation reaction. The conversion from nickel-cobalt oxide to nickel-cobalt sulfide has demonstrated enhanced energy storage capacity and improved electrochemical properties, showcasing promising outcomes for sustainable energy solutions.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jie Chen, Longcheng Zhang, Jun Li, Xun He, Yinyuan Zheng, Shengjun Sun, Xiaodong Fang, Dongdong Zheng, Yongsong Luo, Yan Wang, Jing Zhang, Lisi Xie, Zhengwei Cai, Yuntong Sun, Abdulmohsen Ali Alshehri, Qingquan Kong, Chengwu Tang, Xuping Sun
Summary: The use of nickel-iron sulfide nanosheet array on nickel foam as a bifunctional electrocatalyst demonstrates high-performance and cost-effective electrolysis of seawater for hydrogen production. It delivers a current density of 500 mA cm(-2) at overpotentials of 300 and 347 mV for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in alkaline seawater respectively. Moreover, it only requires a cell voltage of 1.85 V to drive 500 mA cm(-2) in a two-electrode electrolyzer, and shows strong stability for at least 50 hours of electrolysis in alkaline seawater, outperforming recently reported catalyst electrodes for seawater splitting.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Energy & Fuels
Shuxin Zhou, Huailin Fan, Fei He, Zhaobing Fu, Guoming Gao, Shu Zhang, Xun Hu
Summary: Metal selenides are important electrode materials in electrochemical energy storage and show comparable or even superior performance compared to metal oxides. The role of selenium in metal selenide electrodes in pseudocapacitance is still unclear. This study synthesized and evaluated NiO/NiCo2O4/CoO and NiCoSe2 spheres in an electrochemical system, and found that the participation of selenium in pseudocapacitance reactions is through hydroxides rather than selenides. Selenium also promotes the transformation of the active phase and contributes to the excellent electrochemical performance. The asymmetric device with NiCoSe2 as the positive electrode exhibited superior energy density and stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Xue Li, Komal Patil, Pravin Babar, Ashutosh Agarwal, Xing Chen, Dong Myeong Kim, Jin Hyeok Kim, Yung Tae Yoo
Summary: In this study, CoMnFeO4 with a unique nanowire-nanosheet coexisting structure was successfully synthesized by a hydrothermal method, followed by calcination. The as-prepared CoMnFeO4 exhibited outstanding oxygen evolution reaction performance in an alkaline medium, which can be attributed to its porous structure, excellent structural stability, and synergistic effect of multications.
Article
Chemistry, Inorganic & Nuclear
Jinghua Liu, Hualan Li, Jiayang Cai, Jingyan Liu, Yansheng Liu, Zijun Sun, Xiong He, Dezhi Qu, Xin Li
Summary: In this study, a partial phase conversion strategy was employed to enhance the electrocatalytic performance of cobalt/nickel carbonate hydroxide nanosheet arrays. The optimized sample exhibited remarkable activity and stability in a KOH solution. The presence of iron impurity in the electrolyte played a crucial role in achieving high OER performance, while the heterostructure caused by the partial phase conversion further improved conductivity, stability, and active site availability.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Engineering, Chemical
Xiaofeng Jiang, Xinlong Yan, Xiaoyan Hu, Rui Feng, Tianbo Li, Liping Wang
Summary: A carbon coated CoO plates/3D Ni foam catalyst was successfully prepared and exhibited high efficiency in the degradation of OFX and other organic pollutants through PMS activation. The catalyst showed easy recovery, low metal ion leaching, and involvement of both free and non-free radicals in the OFX degradation process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
John Anthuvan Rajesh, In-Rok Jo, Soon-Hyung Kang, Hyunsoo Kim, Kwang-Soon Ahn
Summary: Efficient electrocatalysts for water splitting are crucial for clean fuel production. In this study, cobalt-nickel selenide (CoNi2Se4) nanostructures were successfully fabricated with excellent water splitting performance, with the flake-like CoNi2Se4 structure showing the best catalytic activity at pH 3.0.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Joseph J. Kubal, Kevin W. Knehr, Naresh Susarla, Adam Tornheim, Alison R. Dunlop, Dennis D. Dees, Andrew N. Jansen, Shabbir Ahmed
Summary: The temperature-dependent behaviors of five nickel-containing positive electrodes in lithium-ion batteries are investigated. The impedance growth of the electrodes increases with temperature, with exceptions of NCA and NMC811 which show significant increases in ASI at 40°C. The capacity of the cells reduces at lower temperatures.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Alberto Adan-Mas, Jacob Olchowka, Lydie Bourgeois, Philippe Legros, Patrizia Paradiso, Fatima Montemor, Liliane Guerlou-Demourgues
Summary: Nickel-cobalt oxyhydroxide has been delaminated by tetrabutylammonium intercalation, which increases the number of electrochemically active sites and enhances the material's capacity. This technique shows promise for improving the performance of electrode materials for electrochemical energy storage.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Linlong Lyu, Jing Hu, Kui Cheng, Dongmei Lin, Kaikai Li, Zhouguang Lu, Haimin Yao, Limin Zhou
Summary: This study observes electrochemical activation during continuous electrochemical cycling, and investigates the mechanisms behind it by analyzing hydrothermally reduced graphene oxide (HrGO) carbon cathodes. The phenomenon is attributed to surface area increase, formation of multilayer reduced graphene oxide rolls, structural order enhancement, and a combination of pseudocapacitive and intercalative storage mechanisms.
Article
Environmental Sciences
Yuelei Li, Ying Zhao, Kui Cheng, Fan Yang
Summary: This study investigates the effects of single factors on phosphorus transport behavior using quartz sand columns and a two-site nonequilibrium transport model. The results show that doping rate and pH have a notable effect on the transport of phosphorus, and the particle size of quartz sand has minimal impact. The addition of biochar can increase the fixation rate of phosphorus through direct interaction with phosphate and bridging action with metal ions.
ENVIRONMENTAL POLLUTION
(2022)
Article
Materials Science, Multidisciplinary
Shengnan Zhang, Chunlin Zhao, Kai Zhu, Jiaqi Zhao, Yinyi Gao, Ke Ye, Jun Yan, Guiling Wang, Dianxue Cao
Summary: Aqueous Mg ion batteries (AMIBs) have great potential for energy storage due to their high capacity, abundant resource, and environmental friendliness. However, the scarcity of suitable anode materials limits the development of AMIBs. In this study, a new polymer anode material with a flower-like nanosheet structure is synthesized for aqueous Mg-Na hybrid-ion battery. The polymer electrode material exhibits high discharge specific capacity and maintains its framework structure during the cycling process of the hybrid-ion battery.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Environmental Sciences
Yue Yuan, Chunyu Tang, Yongxu Jin, Kui Cheng, Fan Yang
Summary: This article discusses the factors and mechanisms of humic substances influencing phosphorus cycling in soil-plant systems, focusing on their contribution to soil phosphorus mobilization and plant phosphorus acquisition. Humic substances have been found to enhance phosphorus availability and play an important role in sustainable agriculture.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xianzhi Yin, Kai Zhu, Ke Ye, Jun Yan, Dianxue Cao, Dongming Zhang, Jiaxin Yao, Guiling Wang
Summary: A bi-functional electrode material of self-supporting N-doped C foam grown Pd nanoparticles (Pd@N/C-8 foam) for NaBH4 electrooxidation and H2O2 reduction reaction is successfully prepared and exhibits extraordinary catalytic performance and kinetic parameters. Its application in a direct sodium borohydride-hydrogen peroxide fuel cell (DBHPFC) demonstrates excellent stability and maximum power density.
JOURNAL OF POWER SOURCES
(2022)
Article
Environmental Sciences
Long Sui, Chunyu Tang, Kui Cheng, Fan Yang
Summary: There is a growing concern about the scarcity of phosphorus resources. The addition of biochar can improve the soil physicochemical properties and availability of phosphorus, as well as affect the adsorption and mineralization of phosphorus in soil. This study provides insights into the effects of biochar addition and freezing-thawing cycles on soil phosphorus fractions, and offers references for agricultural production in areas where freezing-thawing cycles occur.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Guixin Wang, Nuolan Jiang, Zhouxiong Zhang, Guiling Wang, Kui Cheng
Summary: This paper reports a facile and environment-friendly method to synthesize 3D Ti3C2Tx/rGO hybrid composite through an ion-induced gelation approach. The synthesized material shows great potential as high-performance electrode material for supercapacitors.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ruibai Cang, Mingyi Zhang, Xuejiao Zhou, Kai Zhu, Xitian Zhang, Dianxue Cao
Summary: A new anode material, 3D-conjugate of 3,4,9,10-perylenetracarboxylic diimide-1,3,5-triazine-2,4,6-triamine (3D-P(PDI-T)), was designed and synthesized for aqueous Mg-ion batteries (MIBs). The increased aromatic structure improved its structural stability by reducing its solubility in aqueous electrolytes. The 3D-P(PDI-T) anode exhibited high rate capacity, reversible capacity, and long cycle life, making it a promising candidate for MIBs.
Article
Chemistry, Multidisciplinary
Xiongxin Peng, Shuang Gai, Kui Cheng, Fan Yang
Summary: The study conducted hydrothermal humification kinetics experiments using corn straw as raw material and employed characterization techniques such as ultra-performance liquid chromatography, nuclear magnetic resonance spectroscopy, and Fourier-transform ion cyclotron resonance mass spectrometry to determine the formation mechanism of artificial humic substances (A-HS). The results showed that in an alkaline environment, rapid dissociation of lignocellulose can occur, with cellulose and hemicellulose being hydrolyzed into glucose and xylose, further dehydrated to form 5-hydroxy furfural and furfural, and then rehydrated to synthesize levulinic acid and other small molecular acids. These small precursors then combine with lignin fragments to form fulvic acids, humic acids, and even humin. The proposed mechanism of hydrothermal humification is of great significance for the design, synthesis, and application of A-HS in sustainable agriculture.
Article
Chemistry, Physical
Boya Liu, Kai Zhu, Ke Ye, Jun Yan, Guiling Wang, Dianxue Cao
Summary: By designing and constructing the PANI-PPI-9 composite, the electrochemical performance of PPI is improved, especially in terms of battery cycling life. The PANI shell acts as an electronic transport highway without obstructing the lithium storage of PPI.
JOURNAL OF POWER SOURCES
(2022)
Article
Green & Sustainable Science & Technology
Xianzhi Yin, Meiling Hou, Kai Zhu, Ke Ye, Jun Yan, Dianxue Cao, Dongming Zhang, Jiaxin Yao, Guiling Wang
Summary: A novel electrode of PdCu nanoparticles modified rGO framework was fabricated and exhibited excellent catalytic performance for DBHPFC. The superior performance of the optimized electrode can be attributed to its unique structure and the strong adsorption and bond-breaking ability of Pd nanoparticles.
Article
Chemistry, Multidisciplinary
Shengnan Zhang, Kai Zhu, Yinyi Gao, Tianzeng Bao, Hongbin Wu, Dianxue Cao
Summary: Polyimide, as a promising electrode material for lithium-ion batteries, has easy synthesis, customizable structure, and structural stability. The benzene ring structure of polyimide exhibits strong lithium storage capacity as a negative electrode material. We designed and synthesized a polyimide organic polymer (PBPAQ) with a unique spherical flower structure, which enhances the interaction between the electrode material and the electrolyte. The PBPAQ anode shows a specific discharge capacity of 738 mAh g(-1) after 100 cycles at 0.1 A g(-1), laying a foundation for future research on LIB anodes.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yong-Zheng Fang, Sainan Liang, Xu Zhang, Junwu Sang, Shasha Gao, Zhang Zhang, Kai Zhu, Dianxue Cao, Zhen Zhou
Summary: A stable 3D matrix is designed by coating a carbon skeleton with MXene, which can effectively induce the evolution of advantageous Li(110) facets of Li metal anodes, resulting in a dendrite-free anode interface and stable plating-stripping behaviours.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Borong Lu, Dong Wang, Chunlin Zhao, Kai Zhu, Jun Yan, Guiling Wang, Dianxue Cao, Ke Ye
Summary: Combining urea oxidation reaction (UOR) and hydrogen evolution reaction (HER) using catalyst CNCP-350 shows highly efficient catalytic activity in both UOR and HER, achieving efficient hydrogen production.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Review
Engineering, Environmental
Yibo Lan, Shuang Gai, Kui Cheng, Fan Yang
Summary: This article introduces phosphorus recovery methods through biomass thermochemical conversion and their effects on preventing and treating water eutrophication. It also studies the influence mechanisms of phosphate adsorption on metal-modified high-carbon containing lignocellulosic biomass.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(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)
