Article
Chemistry, Multidisciplinary
Lutfia Isna Ardhayanti, Md. Saidul Islam, Masahiro Fukuda, Xinyao Liu, Zhongyue Zhang, Yoshihiro Sekine, Shinya Hayami
Summary: In this study, nanodiamond oxide (NDOx) prepared from modified Hummers' oxidation of nanodiamond (ND) is reported to exhibit excellent proton conductivity and thermal stability. The hydrophilicity of NDOx leads to higher water adsorption, while the retention of functional groups at elevated temperatures can be attributed to its high proton conductivity and thermal stability.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Nattapol Ma, Sarawoot Impeng, Sareeya Bureekaew, Naoki Morozumi, Masa-aki Haga, Satoshi Horike
Summary: Scientists have successfully controlled the anhydrous proton conductivity in a transparent coordination polymer material through photoexcitation. They achieved reversible changes in proton conductivity by modulating light intensity and ambient temperature, providing total control of the conductivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Cunguang Chen, Feng Li, Weihao Han, Tianxing Lu, Pei Li, Qianyue Cui, Yanli Sui, Zhimeng Guo, Alex A. Volinsky
Summary: High thermal stability of pure Al conductors is crucial for their applications in power transmission lines. By utilizing powder metallurgy and optimizing the processing, this study was able to enhance the strength and electrical conductivity of Al conductors. The cold-drawn wires exhibited higher electrical conductivity and optimal mechanical properties, pushing forward the potential application of PM Al in heat resistant conductors.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Masanori Yamada, Naoaki Yoshihara
Summary: A protamine-monododecyl phosphate composite with high proton conductivity was prepared by mixing protamine and monododecyl phosphate. The composite exhibited a self-assembled lamellar structure and showed proton conductivity under anhydrous conditions.
Article
Chemistry, Physical
Minako Taira, Hiroyasu Sato, Kazuhiro Fukumoto, Toshiyuki Misawa, Haruo Naruke, Takeru Ito
Summary: Proton-conducting inorganic-organic hybrid crystals were successfully constructed with proton affinity anions and alkyltrimethylammonium cations, demonstrating anhydrous proton conductivity at intermediate temperatures. This research provides important insights for improving the energy efficiency of fuel-cell batteries.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Energy & Fuels
S. A. Gokulakrishnan, Vikas Kumar, G. Arthanareeswaran, A. F. Ismail, Juhana Jaafar
Summary: By adding halloysite nanoclay and f-GO to SPEEK membrane, the thermal stability, proton conductivity, and hydrophilicity can be improved, making it an excellent membrane material for direct methanol fuel cell applications.
Article
Chemistry, Physical
Zhizhong Leng, Zuzhi Huang, Xu Zhou, Bo Zhang, Hu Bai, Juan Zhou, Shaorong Wang
Summary: Proton-conducting solid oxide electrolysis cells (H-SOECs) using BZCYYb as the electrolyte material have unique advantages. This study investigates the effects of adding different sintering aids (NiO, CuO, ZnO) to BZCYYb on grain size and conductivity. The results show that adding 1 wt% of NiO and CuO sintering aids improves the density and conductivity of BZCYYb. The conductivity increases with steam concentration in most atmospheres, while in oxygen atmosphere with steam at high temperature, the conductivity initially decreases slightly and then increases. CuO is found to have advantages in promoting hydration reaction and proton conduction of BZCYYb electrolyte compared to NiO.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Hongzheng Li, Ying Li
Summary: KTaO3 and KTa0.9M0.1O3-alpha (M = Ti, Hf, Zr) were prepared and characterized. Among them, KTa0.9Zr0.1O3-alpha exhibited the highest conductivity in 1%H2/Ar atmosphere and acted as a pure proton conductor below 525 degrees C. Additionally, KTa0.9Zr0.1O3-alpha showed good chemical stability against CO2 and H2O.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Wenlong Huang, Ying Li, Haiqiang Lu, Yushi Ding, Yandong Liu
Summary: Doped CaZrO3 and CaHfO3 proton conductors were prepared by solid-state reaction and their conductivities and transport properties were systematically investigated in this study. The results show that these materials have promising protonic conduction properties, making them ideal for application in electrochemical hydrogen sensors.
CERAMICS INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Tran Anh Tu, Nguyen Huu Huy Phuc
Summary: In this study, ImidazoleTriflate (ITF)-SiO2 composites xITF-(100-x)SiO2 were successfully prepared by planetary ball-milling method, and the structure of the composites was studied using TG-DTA, XRD, and FT-IR methods. It was found that the crystal size of imidazole triflate decreased as its loading in xITF-(100-x)SiO2 decreased, which significantly influenced the sample properties.
Article
Chemistry, Multidisciplinary
Sacha Fop, Riccardo Vivani, Silvia Masci, Mario Casciola, Anna Donnadio
Summary: A new crystalline metal acid triphosphate, ZrH5(PO4)(3) (ZP3), has been discovered with record-high proton conductivity of 0.5-3.1x10(-2) S cm(-1) in the range 25-110 degrees C in anhydrous conditions. ZP3 achieves superprotonic conductivity through extended defective frustrated hydrogen bond chains, where protons are dynamically disordered over two oxygen centers. The high proton conductivity and stability in anhydrous conditions make ZP3 an excellent candidate for innovative applications in fuel cells and other energy technologies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Hongzheng Li, Ying Li, Wenlong Huang, Yushi Ding
Summary: KNbO3 and KNb0.9M0.1O3-α (M = Ti, Hf, Zr, Sc, In, Yb) were synthesized and characterized for their conductivity. Among them, KNb0.9In0.1O3-α showed the highest conductivity. The conductivity order in different atmospheres was wet air > wet Ar > dry Ar. KNb0.9In0.1O3-α was found to be a nearly pure proton conductor below 625°C. It also exhibited excellent chemical stability against CO2 and H2O, but should be used with caution to avoid rapid heating and cooling.
SOLID STATE IONICS
(2023)
Article
Chemistry, Physical
Hiroki Uehara, Akihiro Ishii, Itaru Oikawa, Hitoshi Takamura
Summary: A new mixed proton-hole conducting material is developed by doping cobalt into BaZr1-xScxO3-delta, which exhibits high hole conductivity. The study investigates the phases present, proton incorporation, and electrical conductivity of BaCoxZr0.9-xSc0.1O3-delta. It is found that Sc doping increases the cobalt solubility limit in BaZrO3 and conductive protons are incorporated in the bulk portion of Co, Sc-doped BaZrO3. BaCoxZr0.9Sc0.1O3-delta shows higher conductivity than Fe or Pr doped BaMxZr1-x-yYyO3-delta. The maximum conductivity is achieved for BaCo0.2Zr0.7Sc0.1O3-delta in both wet and dry oxidizing atmospheres.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Zezhong Wang, Ying Li, Wenlong Huang, Yushi Ding
Summary: In this study, CaHf1-xInxO3-delta perovskite oxides with different doping content were prepared via solid-state reaction method. The results indicated that In doping could improve the conductivities and transport properties of CaHf1-xInxO3-delta, with CaHf0.9In0.1O2.95 exhibiting the highest proton transport number. Therefore, CaHf1-xInxO3-delta shows potential application prospects in electrochemical hydrogen sensor.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Zezhong Wang, Ying Li, Wenlong Huang, Yushi Ding
Summary: Ba3Ba1+xTa2-xO9-delta oxides demonstrate excellent proton conductivity within a certain temperature range.
CERAMICS INTERNATIONAL
(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)