Article
Materials Science, Multidisciplinary
Sanghyeok Im, Shun-Li Shang, Nathan D. Smith, Adam M. Krajewski, Timothy Lichtenstein, Hui Sun, Brandon J. Bocklund, Zi-Kui Liu, Hojong Kim
Summary: Thermodynamic properties of the Nd-Bi system were investigated using a combination of experimental measurements, first-principles calculations, data mining and machine learning predictions, and calculation of phase diagrams. New peritectic reaction and crystal structure of NdBi2 were confirmed, and a more complete phase diagram of the Nd-Bi system was calculated based on newly acquired experimental data and DFT-based calculations.
Article
Chemistry, Physical
Senlin Cui, Matthew Lynn, Ralph E. Napolitano
Summary: The thermodynamics of the Pt-Sn system were investigated by experiments and a critical evaluation of literature data, leading to thermodynamic assessments using the CALPHAD approach. The modeling results compared favorably with reliable experimental data, providing a good representation of phase equilibria and thermodynamic properties in this system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
S. Drzewowska, B. Onderka
Summary: The aim of this work was to reinvestigate phase equilibria in the Bi-Te system. As-cast and long-time equilibrated alloys were analyzed using scanning electron microscopy, X-ray diffraction (XRD), and differential thermal analysis (DTA). The primary solidified phases were identified in as-cast samples, including four intermetallic phases: Bi2Te3, BiTe, Bi2Te, and Bi7Te3. Optimization of model parameters for all phases in this system was performed using the Calphad method. The stability of these phases in other ternary systems and their potential application in the thermodynamic description of the Ag-Bi-Te ternary system were discussed.
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION
(2023)
Article
Thermodynamics
Gunel S. Hasanova, Aytan Aghazade, Dunya M. Babanly, Samira Z. Imamaliyeva, Yusif A. Yusibov, Mahammad B. Babanly
Summary: The Bi-Se system was studied using various techniques, resulting in a new refined phase diagram and the determination of crystal lattice parameters for the compounds. Additionally, the partial molar functions of bismuth in alloys and the standard integral thermodynamic functions of bismuth selenides were calculated. Comparisons with literature data were also conducted.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Senlin Cui, Hao Ma, Jian Wang, Biao Hu
Summary: This work critically reviewed and evaluated the thermodynamic property and phase equilibria data of the Al-Li system, and conducted thermodynamic assessments based on reliable experimental thermochemistry and phase equilibria data. The liquid phase was described using modified quasi-chemical and regular solution models, while the solid phases were described using compound energy formalism and regular solution model. The Gibbs free energies of the ordered AlLi (B32) and Al3Li (L12) superlattice structures were modeled using the split four sublattice compound energy formalism. The obtained thermodynamic descriptions can generally represent the reliable data.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Chemistry, Physical
Stephanie Castro Baldivieso, Nathan D. Smith, Sanghyeok Im, Hojong Kim
Summary: The thermodynamic properties of binary Gd-Bi alloys were investigated using various characterization techniques, revealing the absence of GdBi2 compound in the alloys. The solubility of Gd in liquid Bi was found to increase with temperature, indicating strong chemical interactions between Gd and Bi.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Moran Emuna, Shir Ben Shalom, Yaron Greenberg, Eyal Yahel, Aviva Melchior, Guy Makov
Summary: Experimental and thermodynamic studies were conducted on the high-pressure phase behavior of the Bi-Sb system, predicting the transformation and stability region of the alloy under pressure. The alloy was found to transform from ambient A7 structure to an incommensurate phase, with the stability region determined by spinodal curves.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Fengyang Gao, Yuling Liu, Peng Zhou, Dandan Huang, Taibai Fu, Shuyan Zhang, Yong Du
Summary: In this study, thermodynamic assessments of the Bi-Ca and Bi-Zr systems were carried out using the CALPHAD method. The calculated results showed good agreement with experimental data and are of interest for the development of Bi-based alloys.
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Janusz Pstrus, Przemyslaw Fima
Summary: The density and surface tension of liquid Bi-Cu alloys (25, 50, 75 at. pct Cu) were experimentally measured. It was found that the density decreases linearly with temperature, and the surface tension varies with the Cu content and temperature.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
E. J. Ahmadov, D. M. Babanly, S. Z. Imamaliyeva, D. B. Tagiev, M. B. Babanly
Summary: The Bi-S-Te system was studied in the composition region of Bi2S3-Bi2Te3-Te-S through emf measurements at temperatures ranging from 300 to 450 K. The thermodynamic properties of the compounds Bi2S3, Bi2Te3, Bi2Te2S, and Bi2Te1.8S1.2 were calculated, with comparisons made to existing literature data for Bi2S3 and Bi2Te3. New thermodynamic data for Bi2Te2S and Bi2Te1.8S1.2 were determined for the first time.
INORGANIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Peng Zhou, Yingbiao Peng, Yuling Liu, Yi Kong, Huaqing Zhang, Yinping Zeng, Baixue Bian, Xi Liu, Yong Du, Wenlin Mo, Tao Fa, Bin Bai, Xiaolin Wang
Summary: In this work, thermodynamic and diffusion databases for multicomponent U alloys were developed using the CALPHAD method. Thermodynamic models were used to describe phases in the U-Nb-Zr-Ti-Mo-C system, and 7 ternary systems were assessed. Integration of existing data and present assessments resulted in a comprehensive thermodynamic description. Additionally, a diffusion database for bcc and liquid phases in the U-Nb-Zr-Ti-Mo-C system was developed. Application of these databases in stability analysis and simulation confirmed their reliability, emphasizing the importance of CALPHAD-type nuclear materials databases in advanced metal fuels design.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Construction & Building Technology
Pavan Akula, Dallas N. Little
Summary: Ettringite formation due to sulfate attack can cause volumetric instability and strength loss in Portland cement concrete and chemically stabilized soils. This study evaluates ettringite formation qualitatively and quantitatively using suspensions with different stoichiometric ratios, demonstrating the potential to predict ettringite formation through thermodynamic modeling.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yinping Zeng, Yong Du, Rainer Schmid-Fetzer
Summary: Applying an external magnetic field can lead to unique microstructure and improved properties in materials. The thermodynamic description is crucial for the development of such materials. A predictive computational framework has been developed for the first time, based on the molecular field theory and the mean field approximation using the Heisenberg model. This framework allows for quantitative thermodynamic calculations and the study of phase transitions and phase diagrams in multicomponent and multiphase systems under an external magnetic field.
Article
Construction & Building Technology
D. Jansen, B. Lothenbach
Summary: This study analyzes the potential phase assemblages that may form during hydration in calcium aluminate cements and calcium sulfoaluminate cements based on thermodynamic calculations and pore solution data. It reveals that initially formed metastable phase assemblages contain more phases and have lower Gibbs free energy than the stable phase assemblage.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Chemistry, Physical
Sanghyeok Im, Jarrod Gesualdi, Minkyu Kim, Peyman Asghari-Rad, Kelly Elizabeth Varnell, Hojong Kim
Summary: The thermodynamic properties of Nd-Fe alloys with varying mole fractions of Nd were investigated using electromotive force (emf) measurements. The results showed consistent emf values between different alloy compositions in distinct two-phase regions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yun Tang, Jianwei Hu, Hongwei Tao, Yongjian Li, Wei Li, Haomiao Li, Min Zhou, Kangli Wang, Kai Jiang
Summary: In this study, low-cost KxMn[Fe(CN)(6)](y)square(1-y).nH(2)O with diverse H2O content and structure were harvested via controlling the crystallization rate. It was found that weaker Mn-N bond prepared at a faster crystallization rate is more conducive to the fast electrochemical kinetics of the reversible conversion paths, leading to superior Li-storage performances.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Chenglong Lai, Haomiao Li, Yi Sheng, Min Zhou, Wei Wang, Mingxing Gong, Kangli Wang, Kai Jiang
Summary: Constructing flexible free-standing electrodes with efficient bifunctional performance is significant for improving the performance of flexible Zinc-air batteries. The N-2-NiFe-PBA/NCF/CC-60 electrode exhibits high-efficiency OER activity and excellent ORR performance, as well as outstanding discharge/charge stability. It also demonstrates satisfactory mechanical properties.
Article
Nanoscience & Nanotechnology
Shuai Yan, Haomiao Li, Zehang Li, Wenxin Chen, Xianbo Zhou, Hao Zhou, Weixin Zhang, Yaling He, Kai Jiang, Kangli Wang
Summary: Liquid metal batteries (LMBs) are considered as one of the most promising energy storage technologies for large-scale applications due to their long lifespan and low cost. However, the poor wettability between graphite-based collectors and liquid metal electrodes limits the efficiency and stability of the battery. In this study, a transition layer formed on the graphite-based positive electrode current collector by adding Ti improves the wettability and increases the voltage efficiency of the Li|| Sb-Sn cell from 85.6% to 88.4%. These findings provide new insights for the design of high-efficiency LMBs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Mengjun Li, Xianbo Zhou, Xin He, Chenglong Lai, Bin Shan, Kangli Wang, Kai Jiang
Summary: In this study, the CF4 plasma technology was used to in situ modify Zn metal into uniform nanoscale ZnF2 particles. By regulating the distribution of ions and electrons at the electrode interface, the dendrite growth of zinc was effectively suppressed, leading to zinc batteries with low nucleation overpotential, long cycle life, and excellent current density and discharge depth adaptability. This provides a new idea for the interface modification of zinc anode.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Gang Zhou, Datong Zhang, Youquan Zhang, Wenran Wang, Tomoki Uchiyama, Chunxiao Zhang, Yoshiharu Uchimoto, Weifeng Wei
Summary: An integration strategy of La/Al codoping and LixCoPO4 nanocoating is proposed to enhance the electrochemical performance of high-voltage lithium-rich manganese-based layered oxides (LMLOs).
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Dong Liu, Zheng Lu, Zehua Lin, Chunxiao Zhang, Kuan Dai, Weifeng Wei
Summary: In this study, an organoboron- and cyano-grafted polymer electrolyte PVNB was designed, which incorporates vinylene carbonate as the polymer backbone and organoboron-modified poly(ethylene glycol) methacrylate and acrylonitrile as the grafted phases. The optimized PVNB exhibits high Li-ion transference number (tLi+ = 0.86), wide electrochemical window (>5 V), and high ionic conductivity (sigma = 9.24 x 10-4 S cm-1) at room temperature (RT).
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Chunxiao Zhang, Zheng Lu, Miao Song, Youquan Zhang, Chuyang Jing, Libao Chen, Xiaobo Ji, Weifeng Wei
Summary: A gel electrolyte strategy is demonstrated to improve the high voltage stability of ether electrolytes in lithium metal batteries. The gel electrolyte with cross-linked amide framework increases the electrochemical window and regulates the growth of cathode electrolyte interface (CEI)/solid electrolyte interface (SEI) for uniform growth. It also increases the Li+ transference number and inhibits the generation of harmful substances, while providing flame retardancy and flexibility for safe operation at a high voltage.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tuoya Naren, Ruheng Jiang, Piao Qing, Shaozhen Huang, Canhui Ling, Jialin Lin, Weifeng Wei, Xiaobo Ji, Yuejiao Chen, Qichun Zhang, Gui-Chao Kuang, Libao Chen
Summary: This study designs a lithium metal battery combining agraphene oxide-poly(ethylene oxide) functionalized polypropylene separator and lithium-boron anode to solve the problems of dendrite growth, interfacial reactions, and volume change. The results show that the battery exhibits good ionic conductivity, electrolyte uptake, and high electrochemical stability. The synergistic effect of the functionalized separator and lithium-boron anode provides a direction for the development of high-performance lithium metal batteries.
Article
Chemistry, Multidisciplinary
Jialin Lin, Honghui Peng, Pei Huang, Tuoya Naren, Chaoping Liang, Guichao Kuang, Libao Chen, Chunxiao Zhang, Weifeng Wei
Summary: Sodium-ion batteries (SIBs) suffer from capacity decay due to the erosion of cathodes caused by harmful substances from electrolyte decomposition. This study proposes an electrically coupled composite electrolyte that combines cross-linked gel polymers and an antioxidant additive (TFPBA). Through an electrical coupling effect, TFPBA can immobilize anions and adsorb onto cathode surface to form a robust CEI layer, which enhances Na+ transportation and suppresses side reactions. The cells using this electrolyte achieve stable cycling and high-rate discharge capacity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenran Wang, Li Ma, Baolei Xu, Hai Zhu, Chunxiao Zhang, Libao Chen, Weifeng Wei
Summary: A highly polarized ferroelectric polyvinylidene fluoride (PVDF) coating is formed on the anode current collector using a universal hydrogen bond induced strategy, which can accelerate the migration of lithium ions and promote uniform deposition and stripping of lithium at high-rate situations. As a result, lithium metal batteries with polarized PVDF coating exhibit long cycling lifespan and high-rate performance.
Article
Chemistry, Physical
Xianbo Zhou, Shuai Yan, Xin He, Hao Zhou, Jing Ning, Haomiao Li, Kangli Wang, Kai Jiang
Summary: This research successfully reduces the operating temperature of liquid metal batteries by using a new type of lithium halide-potassium halide electrolytes. Stable operation at 410 degrees Celsius and 350 degrees Celsius is achieved, with high cycle stability and Coulombic efficiency, as well as low cost and large capacity.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Huaming Yu, Dongping Chen, Xuyan Ni, Piao Qing, Chunshuang Yan, Weifeng Wei, Jianmin Ma, Xiaobo Ji, Yuejiao Chen, Libao Chen
Summary: In this study, l-carnitine (l-CN) is proposed as an efficient additive to stabilize both electrodes and extend the lifespan of aqueous Zn-ion batteries. The simultaneous presence of quaternary ammonium cations, COO- anions, and hydroxyl groups in a trace amount of added l-CN has a significant impact on the behavior of Zn2+ deposition/insertion and water molecule activity. The addition of l-CN leads to ultralong life in the symmetric cell with an 87-fold improvement in cycle life (over 6000 h, 1 mA cm(-2)/1 mA h cm(-2)) for dendrite-free Zn plating/stripping and enables the Zn//V2O5 full cell to achieve 3500 cycles with a high capacity retention.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Shengling Cao, Xin He, Manlin Chen, Yu Han, Kangli Wang, Kai Jiang, Min Zhou
Summary: In this paper, fluorine-containing functional groups were grafted on a commercial polypropylene (PP) separator, resulting in improved wettability and ion conductivity, as well as the formation of a LiF-rich solid electrolyte interface (SEI) film. This enhanced the stability and lifespan of Li||Li symmetric batteries with a low overpotential.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Shuai Yan, Haomiao Li, Wenxin Chen, Hao Zhou, Xianbo Zhou, Weixin Zhang, Zehang Li, Yaling He, Kangli Wang, Kai Jiang
Summary: This research proposes a full-lifetime recycling and reutilization strategy for liquid metal batteries (LMBs) based on facile molten salt electrochemical processes. The achieved recycling efficiencies are high, and the batteries constructed with recycled materials exhibit excellent performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Hao Yu, Weihao Wang, Youquan Zhang, Yuejiao Chen, Libao Chen, Liangjun Zhou, Weifeng Wei
Summary: This study designs a weak solvation electrolyte with enhanced Li+ de-solvation and uniform Li deposition by introducing the soft solvent isoxazole. The weak solvation electrolyte improves the cycle life and C-rate performance of lithium metal batteries at low temperature. It enhances the ionic conductivity and accelerates Li+ de-solvation, leading to a stable solid-electrolyte interphase and uniform Li deposition.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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)
