Article
Chemistry, Inorganic & Nuclear
Nazir Ahmad Mala, S. Sivakumar, Khalid Mujasam Batoo, Muhammad Hadi
Summary: This study demonstrates the synthesis of pristine and iron-doped nickel oxide nanoparticles using a precipitation method and investigates their optical, magnetic, and supercapacitor properties. The findings show that the optical bandgap of NiO nanoparticles increases with increasing doping concentration of iron, and the doped sample exhibits ferromagnetic behavior at room temperature. The iron-doped sample shows promising properties as a supercapacitor electrode material, suggesting potential for future supercapacitor applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Zhi Qiao, Chenyu Wang, Chenzhao Li, Yachao Zeng, Sooyeon Hwang, Boyang Li, Stavros Karakalos, Jaehyung Park, A. Jeremy Kropf, Evan C. Wegener, Qing Gong, Hui Xu, Guofeng Wang, Deborah J. Myers, Jian Xie, Jacob S. Spendelow, Gang Wu
Summary: Integrating PGM-free atomically-dispersed single metal active sites in the carbon support can effectively enhance the performance of PGM catalysts, achieving higher efficiency and sustainability with lower loading. The synergistic interaction between Pt clusters and surrounding FeN4 sites enhances the intrinsic activity of Pt, leading to significantly improved overall catalytic performance and stability.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Gurpreet Kaur, Mangalampalli Ravikanth
Summary: A series of novel meso-thienyl and meso-furyl triphyrin(2.1.1)s were synthesized and characterized in this study, revealing significant impact of thienyl/furyl groups on the electronic properties of these compounds. Experimental observations were corroborated by theoretical calculations, indicating consistent results between theory and practice.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Toshiki Ito, Masafumi Ueda, Masahiro Fujisaki, Aya Yoshimura, Takashi Shirahata, Yohji Misaki
Summary: Several derivatives of 1,3-dithiole[3]dendralene with one thiophene spacer were synthesized and their redox behaviors were studied through cyclic voltammetry and spectroelectrochemistry. X-ray structure analysis revealed the formation process of a dicationic species in one of the derivatives during a chlorination reaction.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Multidisciplinary
Andrey Petrov, Lawrence Conrad, Nathan T. Coles, Manuela Weber, Dirk Andrae, Almaz Zagidullin, Vasili Miluykov, Christian Mueller
Summary: In this study, a diglyme solution of Na[cyclo-P-5] was reacted with alkynes and isolobal nitriles and phosphaalkynes to obtain (aza)phospholide anions 2 a-c, 4 a,b, and 6. The coordination of these anions with Fe-II resulted in the formation of (aza)phosphametallocenes 3 a-c, 5 a,b and 7. The new compounds were characterized using various spectroscopy and crystallography techniques.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Alexandra R. McNeill, Rodrigo Martinez-Gazoni, Roger J. Reeves, Martin W. Allen, Alison J. Downard
Summary: ZnO is a strong candidate for transparent electronic devices due to its wide band gap and earth-abundance, but its practical use is limited by surface metallicity. Modification of ZnO single crystal surfaces with aryl films and NP films can decrease the downward surface band bending, with evidence of Zn-O-C bonding provided by XPS measurements.
Article
Chemistry, Multidisciplinary
Kecheng Wei, Honghong Lin, Xueru Zhao, Zhonglong Zhao, Nebojsa Marinkovic, Michael Morales, Zhennan Huang, Laura Perlmutter, Huanqin Guan, Cooro Harris, Miaofang Chi, Gang Lu, Kotaro Sasaki, Shouheng Sun
Summary: Efficient cleavage of C-C bonds and oxidation of alcohols to CO2 is crucial for the development of highly efficient alcohol fuel cells. In this work, core/shell Au/Pt nanowires with stepped Pt clusters deposited on ultra-thin Au nanowires are synthesized as an active catalyst for alcohol oxidation. The Au-1.0/Pt-0.2 nanowires show the highest activity for ethanol electro-oxidation and also exhibit activity for other primary alcohols. The study provides important evidence and insights for enhancing electrochemical oxidation of alcohols and future development of direct alcohol fuel cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Organic
R. Alan Aitken, Fiona M. Fotherby
Summary: This article reviews the synthesis methods, structure and properties of dihydrotetrathiafulvalenes (dihydro-TTFs), and discusses their application and reactions in charge transfer salts.
CURRENT ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xing Li, Yanghua He, Shaobo Cheng, Boyang Li, Yachao Zeng, Zhenhua Xie, Qingping Meng, Lu Ma, Kim Kisslinger, Xiao Tong, Sooyeon Hwang, Siyu Yao, Chenzhao Li, Zhi Qiao, Chongxin Shan, Yimei Zhu, Jian Xie, Guofeng Wang, Gang Wu, Dong Su
Summary: The thermally driven structure evolution of Pt-Co binary catalyst systems was investigated, revealing the crucial roles of pre-doping CoN4 sites in carbon supports and the initial Pt NP sizes in forming either Pt3Co intermetallics or single Pt/Co metal sites.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Fei Xiao, Qi Wang, Gui-Liang Xu, Xueping Qin, Inhui Hwang, Cheng-Jun Sun, Min Liu, Wei Hua, Hsi-wen Wu, Shangqian Zhu, Jin-Cheng Li, Jian-Gan Wang, Yuanmin Zhu, Duojie Wu, Zidong Wei, Meng Gu, Khalil Amine, Minhua Shao
Summary: Researchers have designed a hybrid electrocatalyst consisting of atomically dispersed platinum and iron single atoms, as well as platinum-iron alloy nanoparticles. This electrocatalyst exhibits higher activity and durability in proton exchange membrane fuel cells.
Article
Chemistry, Physical
Raphael Chattot, Marta Mirolo, Isaac Martens, Kavita Kumar, Vincent Martin, Amir Gasmi, Laetitia Dubau, Frederic Maillard, Luis Castanheira, Jakub Drnec
Summary: Efficient testing of PEMFC cathode catalysts' long-term stability requires the use of accelerated stress tests and auxiliary in situ electro-chemical characterization techniques such as cyclic voltammetry. This study reveals that the cyclic voltammetry experiment performed at the end of the AST controls the increase of the coherent domain size monitored on the aged catalyst.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Abdelmadjid Kherrouba, Rafik Bensegueni, Mounia Guergouri, Ahlem-Linda Boulkedid, Mehdi Boutebdja, Mustapha Bencharif
Summary: Two new square-planar nickel (II) complexes were synthesized and characterized, with different electronic absorption spectra. Theoretical calculations using density functional theory were in agreement with experimental results, showing the validity of the synthesized complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Multidisciplinary Sciences
Haoliang Huang, Yu-Chung Chang, Yu-Cheng Huang, Lili Li, Alexander C. Komarek, Liu Hao Tjeng, Yuki Orikasa, Chih-Wen Pao, Ting-Shan Chan, Jin-Ming Chen, Shu-Chih Haw, Jing Zhou, Yifeng Wang, Hong-Ji Lin, Chien-Te Chen, Chung-Li Dong, Chang-Yang Kuo, Jian-Qiang Wang, Zhiwei Hu, Linjuan Zhang
Summary: LiNiO2 catalyst exhibits super-efficient activity during the oxygen evolution reaction (OER) due to the formation of double O 2p holes states, as observed by operando XAS, XRD, and Raman spectroscopy. Designing efficient OER catalysts is crucial for energy conversion devices.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Aya Yoshimura, Keisuke Henmi, Ayaka Handa, Kohei Kagawa, Takashi Shirahata, Yohji Misaki
Summary: Novel bis- and tetrakis(diphenylphosphino)tetrathiafulvalenes with an anthraquinoid spacer exhibit typical geometry and cyclic voltammograms indicating two different reduction processes.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Myeongjin Kim, Jinho Park, Maoyu Wang, Qingxiao Wang, Moon J. Kim, Jin Young Kim, Hyun-Seok Cho, Chang-Hee Kim, Zhenxing Feng, Byung-Hyun Kim, Seung Woo Lee
Summary: This study monitors the structural evolution of Ir nanocrystals under acidic oxygen evolution reaction (OER) conditions and finds that the concave Ir surface with high-index planes promotes surface IrOx formation, leading to increased OER activity. It establishes the thermodynamic preference of Ir high-index surfaces for oxygen atom adsorption and surface oxide formation, providing new principles for the design of nanoscale OER electrocatalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(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)