Article
Chemistry, Physical
F. Mazzola, H. Hassani, D. Amoroso, S. K. Chaluvadi, J. Fujii, V. Polewczyk, P. Rajak, Max Koegler, R. Ciancio, B. Partoens, G. Rossi, I. Vobornik, P. Ghosez, P. Orgiani
Summary: WO3 is a versatile compound that undergoes structural transitions, with various applications such as flexopiezoelectricity, electrochromism, and improving Li-based battery performance. The synthesis of WO3 thin films holds promise for stabilizing electronic phases, but its electronic structure remains unexplored experimentally. This study investigates the electronic structure of strained WO3 thin films and reveals the Fermiology of the system, with significant energy splittings due to atomic distortions. These splittings and the system's thermal stability offer potential for controlling inter- and intraband scattering in electronic applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Wanjun Yan, Guanguang Zhang, Rihui Yao, Wei Xu, Muyun Li, Xinglin Li, Jinyao Zhong, Taijiang Liu, Xiaoqin Wei, Honglong Ning
Summary: The study investigated the electrochromic sticking image behaviors in WO3 films prepared from ammonium tungstate precursors, attributing it to residual ammonium ions and oxygen vacancy defects. For amorphous WO3 film, ammonium ions preferentially participate in the coloring process but leave ions behind in the film during bleaching, causing sticking image. In crystalline WO3 film, increasing oxygen vacancy concentration and film density inhibit Li+ ion extraction, leading to high charge transfer resistance and necessitating a prolonged bleaching bias to eliminate sticking images.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Guanglu Lei, Zishuo Li, Guocai Lu, Jinyuan Hu, Haochuan Shang, Xiaolei Zhang, Xianghong Liu, Jun Zhang, Xiangxin Guo
Summary: Metal oxide semiconductor (MOS) thin films, especially tungsten oxide (WO3) thin films, have shown great potential as sensing layers for gas sensor devices. This study focuses on the deposition and annealing process of WO3 thin films on interdigital electrodes, and explores the impact of oxygen vacancies on sensor properties. The results indicate that the WO3 sensor annealed at 500 degrees C exhibits the best performance in detecting triethylamine (TEA), which is attributed to the enhanced adsorption of oxidative oxygen species due to the presence of abundant oxygen vacancies.
JOURNAL OF MATERIOMICS
(2022)
Article
Materials Science, Multidisciplinary
H. D. Cho, P. Ilanchezhiyan, G. Mohan Kumar, D. Y. Kim
Summary: Thin films of metal-oxide nanostructures based on tungsten were established on silicon substrates for oxygen evolution reactions. Carbonization of tungsten trioxide thin films at high temperature through methane treatment significantly improved their conductivity and promoted oxygen production kinetics, making them viable electrocatalysts for effective oxygen evolution reactions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Multidisciplinary
Marika Gugole, Oliver Olsson, Stefano Rossi, Magnus P. Jonsson, Andreas Dahlin
Summary: The possibility of actively controlling structural colors has attracted a lot of attention recently, especially for new types of reflective displays. By using inorganic electrochromic nanostructures based on tungsten trioxide, gold, and platinum, a wide color range and high reflectance can be achieved, outperforming the latest commercial color e-readers.
Article
Materials Science, Multidisciplinary
Qingyi Huang, Yi Liang, Sheng Cao, Zaishang Yang
Summary: Vertically aligned WO3 nano-architectures can be obtained by adjusting the composition of the precursor solution via a hydrothermal method. The nanostructured array films with thicknesses of about 600 nm exhibit remarkable enhancement of electrochromic properties in the infrared region. The improved performance is attributed to the vertically arranged structure, facilitating ion diffusion and providing a larger surface area for charge transfer reaction.
Article
Electrochemistry
Jesica Ortiz, Dwight Acosta, Carlos Magana
Summary: WO3 thin films with improved electrochromic durability were deposited using pneumatic spray pyrolysis technique. The films showed switching stability of more than 15,000 cycles and exceptional diffusion of H+ ions. The morphological, topological, and spectroscopic properties of the films were consistent with previous studies.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Maxime Lagier, Aurelien Bertinotti, Olivia Bouvard, Luc Burnier, Andreas Schuller
Summary: This study investigated the incorporation of Mo into WO3 thin films for electrochromic devices, aiming to improve color neutrality in the dark state. Characterization techniques such as XPS, GIXRD, and SEM were used to analyze the deposited thin films, while VASE and transmission measurements were employed to evaluate lithiated films. The proposed model involving Tauc-Lorentz and Lorentz oscillators dispersion laws helped in understanding electronic transitions and determining optical properties accurately.
Article
Chemistry, Multidisciplinary
Yaowu Li, Peiyan Sun, Jian Chen, Xiuling Zha, Xueqing Tang, Zhiwei Chen, Yanan Zhang, Shan Cong, Fengxia Geng, Zhigang Zhao
Summary: The use of a new device design based on porous metamaterials has solved the limitations of metamaterial-based electrochromic displays. The new device achieves good color quality, non-iridescence, fast switching response, excellent cycling performance, and low power consumption.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuanyuan Cui, Qinfan Wang, Guang Yang, Yanfeng Gao
Summary: Through simulation calculations, it was found that Li+-intercalated WO3 exhibits the highest modulation efficiency in the visible light region, while Na+-intercalated WO3 shows the highest modulation efficiency in the infrared light region. Additionally, as the size of the intercalated ions decreases, the diffusion energy barriers also decrease.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Shih-Chieh Hsu, Szu-Han Chao, Nian-Jheng Wu, Jen-Hsien Huang, Jia-Lin Kang, Huei Chu Weng, Ting-Yu Liu
Summary: WO3 nanoparticles and MoO3 nanoribbons were prepared using a microwave-assisted hydrothermal method. A stable WO3/MoO3 suspension with a nanoheterojunction structure was obtained after grinding treatment. The ground WO3/MoOx composite film exhibited enhanced electrochromic performance due to its morphology and enhanced electron transfer. A complementary electrochromic device (ECD) using ground WO3/MoOx showed high transmittance modulation, fast switching times, high coloration efficiency, and cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Hafiz Tariq Masood, Shoaib Anwer, Syed Awais Rouf, Asif Nawaz, Tariq Javed, Tariq Munir, Lianxi Zheng, Wang Deliang
Summary: By utilizing hydrothermally synthesized WO3 nanosheets, a unique thin-film back contact was designed for CdTe solar cells, replacing traditional Cu contacts. The energy barrier at the WO3/CdTe interface was significantly reduced, resulting in improved performance of CdTe thin-film solar cells with WO3 NSs as a buffer layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Minhee Son, Dongwon Shin, Caroline Sunyong Lee
Summary: The study fabricated an electrochromic mirror device using a dry deposition method, capable of achieving a highly reflective mirror and complete black state. The device demonstrated high transmittance in the mirror state and complete blocking of visible light in the black state, with nearly zero transmittance.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Materials Science, Ceramics
Xu Jiang, Jie Sun, Xiaojie Chai, Yifan Chen, Wei Zhang, Jun Jiang, Anquan Jiang
Summary: The study found that the wall current varies with the angle between the applied electric field and the initial polarization, and that the oxygen vacancy concentration can be controlled through thermal annealing, affecting the magnitude of the domain wall current.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Gyuweon Jung, Seongbin Hong, Yujeong Jeong, Wonjun Shin, Jinwoo Park, Donghee Kim, Jong-Ho Lee
Summary: This study presents a low-power, sensitive, selective, reliable, and practical CO gas sensor. The sensor utilizes a floated WO film as a sensing material and modulates the electron concentration to enhance sensitivity and selectivity. The proposed sensor shows a higher response and lower fabrication cost.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Renqian Jiang, Liang Mao, Yulong Zhao, Junying Zhang, Eugene B. Chubenko, Vitaly Bondarenko, Yanwei Sui, Xiuquan Gu, Xiaoyan Cai
Summary: In this study, a one-dimensional/two-dimensional CeO2/ZnIn2S4 photocatalyst was successfully fabricated and its photocatalytic activity under visible light was analyzed. The results showed that the CeO2/ZIS sample had the highest H2 production rate, which can be attributed to the efficient separation of photogenerated carriers and the formation of the Z-scheme heterojunction.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lijiang Zhao, Xinghua Liu, Jinsong Li, Xungang Diao, Junying Zhang
Summary: A facile one-step in-situ polycondensation method was used to synthesize Na3V2(PO4)3 in 3D holey-carbon frameworks, which improved its electrochemical performance and showed high capacity, high rate capability, and long cycle life. This structure can be applied in the design of sodium, lithium, and potassium energy storage materials.
Article
Chemistry, Multidisciplinary
Jiachen Xu, Qinran Li, Dejian Sui, Wei Jiang, Fengqi Liu, Xiuquan Gu, Yulong Zhao, Pengzhan Ying, Liang Mao, Xiaoyan Cai, Junying Zhang
Summary: By depositing cobalt phosphate (Co-Pi) on the surface of CdIn2S4 nanosheets, an efficient pathway for accelerating hole transfer and promoting the hydrogen evolution reaction (HER) activity is developed. The introduction of Co-Pi not only increases the probability of photogenerated holes arriving at the catalyst surface, but also prolongs the charge carrier's lifetime. As a result, Co-Pi/CIS exhibits a higher photocatalytic H-2 evolution rate compared to pristine CIS and Pt modified CIS.
Article
Chemistry, Multidisciplinary
Luyu Cao, Xiaofang Jia, Weijiang Gan, Chong-Geng Ma, Junying Zhang, Bibo Lou, Jing Wang
Summary: A new lead-free double perovskite crystal with near-infrared emission is developed by co-doping Sb3+ and Yb3+ ions into Cs2AgInCl6. The self-trapped excitation (STE) emission intensity of Cs2AgInCl6 is significantly enhanced by 240 times, resulting in a larger spectral overlap with the absorption of Yb3+ ions. This leads to an unprecedented NIR photoluminescence quantum yield of over 50% in lead-free double perovskites.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Junyan Wang, Chen Yang, Liang Mao, Xiaoyan Cai, Zikang Geng, Haoyu Zhang, Junying Zhang, Xin Tan, Jinhua Ye, Tao Yu
Summary: Artificial photosynthesis converts carbon dioxide into hydrocarbon fuels to address global warming and energy crisis. In this study, Cu and Ga are positioned on ultra-thin CuGaS2/Ga2S3 through sulfur defect engineering, resulting in a C2H4 yield selectivity of approximately 93.87% and a yield of approximately 335.67 mu mol g(-1) h(-1). The presence of a sulfur vacancy induces a highly delocalized electron distribution and the formation of a Cu-Ga metallic bond, which enhances the photocatalytic reduction of CO2 to C2H4. The dominance of exposed Cu atoms on the 2D ultra-thin CuGaS2/Ga2S3 effectively captures *CO molecules, reducing the C-C coupling barrier in the process of photocatalytic CO2 reduction. This study proposes a novel strategy to adjust the selectivity of photocatalytic CO2 reduction through defect engineering.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Lirong Zhao, Yimin Cui, Junyi Li, Yuxi Xie, Wenping Li, Junying Zhang
Summary: This paper provides a detailed overview of the applications of focused ion beam (FIB) technology in the fabrication of nanomaterials. It discusses ion optical systems, operating modes, and the integration of FIB technology with other systems. The use of FIB-SEM synchronization system allows for the 3D controllable fabrication of nanomaterials. The paper focuses on the fabrication of conductive, semiconductive, and insulative nanomaterials, optimizing parameters and working modes for high aspect ratio fabrication and 3D reconstruction.
Article
Materials Science, Multidisciplinary
Jiacheng Sun, Zhu Lin, Xiaofang Jia, Huiting Li, Cheng Song, Feng Pan, Lu Fang, Junying Zhang, Yuyan Wang
Summary: Transition metal dichalcogenides (TMDs) with tunable energy bandgap and strong light-matter interaction are potential candidates for next-generation photodetectors. A controllable n-doping technique for 2D TMDs materials by annealing under NH3 flow is demonstrated, which significantly improves the optoelectronic performance of the devices. The doping effect is attributed to the physical and chemical adsorption of NH3 and the formation of isolated sulfur vacancies, confirmed by atomic-scale characterization and density functional theory calculations. The fabricated WS2 photodetector exhibits high responsivity, external quantum efficiency, and specific detectivity, indicating its great potential in sensitive and power-efficient photodetection. Our results provide an effective method for controllable n-doping of 2D materials, aiming to fabricate high-performance 2D photodetectors.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Xiaofang Jia, Yue Lu, Kunrong Du, Huibin Zheng, Liang Mao, Hao Li, Zhaoyu Ma, Rongming Wang, Junying Zhang
Summary: The construction of interfacial electric field (IEF) in semiconductor heterojunction is crucial for enhancing photocatalytic hydrogen evolution. By modulating the work function of p-SnS and n-ZnIn2S4 based on the density functional theory prediction, a type-I heterojunction with efficient charge-carriers separation and impressive hydrogen evolution rate is achieved. The interfacial Sn-S bond acts as a transport channel, accelerating charge-carriers transfer under the promotion of significant Fermi level difference and IEF.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Fu, Jiefu Yin, Huaqiang Cao, Zhongfu Zhou, Junying Zhang, Jingjing Fu, Jamie H. Warner, Cheng Wang, Xiaofang Jia, G. Neville Greaves, Anthony K. Cheetham
Summary: The photoluminescence blinking behavior of single quantum dots under steady illumination is a significant yet controversial topic. It hinders the use of single quantum dots in bioimaging. Different mechanisms, particularly the non-radiative Auger recombination mechanism, have been proposed to explain it. Fluorescence non-blinking is observed in photocharged single graphene quantum dots (GQDs) due to the presence of singly charged trions that maintain photon emission through radiative and non-radiative Auger recombination. This phenomenon is attributed to the different energy levels caused by oxygen-containing functional groups in the GQDs, and the suppression of blinking is attributed to trap site filling caused by Coulomb blockade.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Peng Gao, Quanxiao Liu, Jiao Wu, Jun Jing, Wenguan Zhang, Junying Zhang, Tao Jiang, Jigang Wang, Yuansheng Qi, Zhenjun Li
Summary: A series of long-afterglow luminescent materials were synthesized via the combustion method. The crystal structure, luminescent properties, and ion doping concentration were analyzed. The addition of Eu2+ caused a broad green emission, while Dy3+ and Gd3+ acted as sensitizers to produce afterglow luminescence. The luminous intensity and afterglow duration increased with the addition of sensitizer ions. The elemental structure and valence states of the doped ions were determined, and the samples were successfully synthesized.
Editorial Material
Chemistry, Multidisciplinary
Junying Zhang, Yong Chen, Jungang Hou
Article
Materials Science, Multidisciplinary
Jie Chen, Liang Mao, Jiachen Xu, Xiuquan Gu, Zakhar I. Popov, Yulong Zhao, Yihan Ling, Yanwei Sui, Pengzhan Ying, Xiaoyan Cai, Junying Zhang
Summary: The investigation of highly conductive and stable non-noble metal electrocatalysts is essential for promoting the hydrogen economy. In this study, heteroatom-doping and graphene-covering techniques were employed to enhance the electronic properties of NiCo2S4 yolk-shell microspheres, improving their resistance to corrosion in acidic environments. The introduction of phosphorous heteroatoms and the use of graphene covering contributed to accelerated electron transfer and proton permeability, resulting in a catalyst with high activity and durability.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiao Wu, Quanxiao Liu, Peng Gao, Jiaqi Hu, Meijuan Cao, Junying Zhang, Wei Chen, Jigang Wang, Yuansheng Qi, Zhenjun Li
Summary: A series of Ba0.5Sr0.5Al2O4:xEu(2+) (x = 0.01, 0.02, 0.03, 0.04, 0.06) nanophosphors were synthesized using a combustion method. The nanoparticles showed blue-green emission from Eu2+ ions under excitation by 303 nm and 365 nm ultraviolet light, with an optimal doping concentration of 2%. Furthermore, the fluorescent powder could be used to prepare flexible films and anti-counterfeiting ink for banknotes, demonstrating potential applications in harsh environments and the field of anti-counterfeiting.
Article
Chemistry, Multidisciplinary
Yuchen Guo, Jiaming Sun, Yuan Tang, Xiaofang Jia, Yu Nie, Zikang Geng, Chunyang Wang, Junying Zhang, Xin Tan, Dichang Zhong, Jinhua Ye, Tao Yu
Summary: A hollow-structured ZnIn2S4 with surface S vacancies is synthesized to enhance the interfacial interaction and regulate the electron accumulation ability, leading to the accumulation of photogenerated electrons on the NiCo2S4 surface. The resulting high-concentration photogenerated electrons are excited into hot electrons via the LSPR effect, prolonging their lifetimes and greatly improving the slow kinetics of photocatalytic hydrogen evolution.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zhengui Zhao, Fangfei Dong, Yuyan Wang, Jiacheng Sun, Huanyu Ye, Rongming Wang, Junying Zhang
Summary: WTe2 is a vital candidate for broad-wavelength-range photodetectors and the preparation of large-sized and high-quality WTe2 crystals is a challenge. In this study, a salt-assisted double-tube CVD method is proposed for the one-step preparation of WTe2 crystals with controlled thickness and lateral dimension. A high-performance photodetector based on WTe2 is fabricated, demonstrating its potential for infrared optoelectronic devices.
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)
