Article
Materials Science, Ceramics
Masaki Wada, Kazuki Mitsui, Yukihide Ishibashi, Akira Saitoh, Keiji Tanaka
Summary: In this study, the birefringence in As2S3 glass induced by uniaxial stress or linearly-polarized light was comparatively investigated. The negative photoelastic constant in As2S3 resulted in decreased refractive index under applied stress, in contrast to SiO2 glass. Similarly, the negative photoinduced birefringence in As2S3 indicated a decreased refractive index parallel to the electric field of the excitation light. These similarities suggest a common structural origin, possibly related to anisotropic segmental layer structures formed by mechanical and photo-structural atomic motions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Physics, Applied
Akira Saitoh, Yukihide Ishibashi, Masaki Wada, Kazuki Mitsui, Keiji Tanaka
Summary: Optical fibers made of chalcogenide glass, specifically As2S3, can be bent sharply by the side irradiation of polarized light. The direction of bending depends on the polarization of the light. This bending phenomenon is not affected by thermal effects and is believed to be caused by photo-induced optomechanical forces and fluidity. This discovery has the potential to be used in the development of photo-manipulation methods for chalcogenide-glass fibers, particularly for applications in all-optical switching/modulation devices working at infrared wavelengths.
APPLIED PHYSICS EXPRESS
(2023)
Article
Optics
Nimitha S. Prabhu, H. M. Somashekarappa, M. Sayyed, Abdullah M. S. Alhuthali, Y. Al-Hadeethi, Sudha D. Kamath
Summary: The influence of gamma radiation doses on the 10BaO-20ZnO-20LiF-49.3B(2)O(3) -0.7Er(2)O(3) glass was analyzed in terms of density, optical absorption, and luminescence characteristics. The high doses of radiation resulted in the formation of defects in the glass, altering its optical properties. The study also demonstrated the remarkable radiation hardness of the glass as a green emission device and laser.
JOURNAL OF LUMINESCENCE
(2021)
Article
Optics
Reena Gadhwal, Hukum Singh, Ambika Devi, Kapil Kumar
Summary: In this article, spectral studies and optical nonlinearities of optical grade thin films fabricated from nano colloidal solutions of Ge20Te75Bi5 chalcogenide glass are reported. The emission peaks and bandgap of the films vary with the concentration and grain size of the nanocomposites. The presence of reverse saturable absorption is confirmed and the third-order optical nonlinearities can be enhanced for usage in nonlinear optical systems.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Physics, Condensed Matter
S. Q. Asadullayeva, G. M. Fatullayeva, N. A. Ismayilova
Summary: The study investigated the photoluminescence properties of (La2O3)(0.05)(As2S3)(0.90)(Er2O3)(0.05) combination in the visible region at different temperatures. It was found that the inclusion of two impurities led to the disappearance of the maximum peak belonging to As2S3 and a sharp increase in the photoluminescence spectrum intensity. The sharp increase in photoluminescence intensity was attributed to the interatomic transition of Er3+ ion in the 600-750 nm region.
SOLID STATE COMMUNICATIONS
(2021)
Article
Physics, Applied
Yaw S. Obeng, Nhan V. Nguyen, Papa K. Amoah, Jungjoon Ahn, Mikhail Y. Shalaginov, Juejun Hu, Kathleen A. Richardson
Summary: Broadband dielectric spectroscopy (BDS) was used to study the effects of low fluence UV-irradiation on Ge2Sb2Se5 thin films. The study found that the irradiation induced reversible changes in film morphology and microwave scattering signature. Additionally, annealing the photo-exposed material resulted in the formation of a thermally stable layer. BDS analysis provided new insights into the nature of photo-induced processes in chalcogenide films.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Optics
Lin Zhang, Allen Y. Yi
Summary: In this study, a novel rapid precision surface molding technique utilizing graphene coating for localized rapid heating was developed. The technique resulted in rapid heating of mold surfaces, improved anti-adhesion, high replication fidelity, and lower energy consumption compared to conventional methods. The graphene-coated silicon wafer showed high thermal response and repeatability, enabling the replication of structures and patterns with high accuracy.
Article
Chemistry, Physical
Alvaro de Farias Soares, Sonia Hatsue Tatumi, Lilia Coronato Courrol, Renata de Faria Barbosa, Nagabhushana Kuruduganahalli Ramachandraiah
Summary: This study reports the structure, composition, luminescence properties, and transfer phenomena in Brazilian natural fluorapatite. The results show that the sample exhibits photoluminescence, thermoluminescence, and optically stimulated luminescence, as well as phenomena such as photothermo transfer.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Xing Wang Liu, Weijun Zhao, Yue Wu, Zhengong Meng, Zikai He, Xin Qi, Yiran Ren, Zhen-Qiang Yu, Ben Zhong Tang
Summary: In this study, a series of phosphorescent materials with non-invasive and rapid responsive properties were designed and prepared. These materials exhibit light stimulus-triggered phosphorescence through intramolecular rotation induced by photon irradiation. The conversion from photothermal effect to phosphorescence activation was found to play a crucial role in achieving efficient phosphorescence.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Juan Liu, Jingjing Liu, Wenchao Zhang, Kai Li, Chao Liu
Summary: Lead chalcogenide quantum dots with controlled composition, size, and optical properties are obtained in glasses through precipitation and thermal treatment. The addition of chalcogen elements in the glasses and the adjustment of heat-treatment conditions enable modulation of the properties of PbSexS1-x quantum dots. Increasing the concentration of S in the glasses reduces the relative fraction of Se in the quantum dots, while higher heat-treatment temperatures promote the enrichment of Se in the quantum dots. These alloyed quantum dots exhibit improved photoluminescence quantum yields and enhanced resistance to thermal quenching.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
M. A. Avil, F. J. Gotor
Summary: Solid solution samples of Mn2+-doped ZnSxSe1-x were synthesized through a mechanically-induced self-sustaining reaction process. The band-gap energy of the samples was controlled by changing the stoichiometry of the solid solution. However, an efficiency loss was observed with increasing Se content.
Article
Materials Science, Multidisciplinary
Yuanhuan Sun, Zheng Zhang, Zhen Yang, Lei Niu, Jian Wu, Tengxiu Wei, Kunlun Yan, Yan Sheng, Xunsi Wang, Rongping Wang
Summary: The study found that Ge-20 and Ge-36 undergo photodarkening and photobleaching, respectively, under illumination at sub-bandgap wavelength with different power densities, while Ge-26.67 remains almost optically stable in any cases.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Materials Science, Ceramics
Kangkang Wang, Wenfeng Wang, Guangrui Mao, Ziliang Li, Shixun Dai, Tiefeng Xu, Feifei Chen
Summary: In this study, the nano-crystallization behavior of Ge-S binary chalcogenide glass was significantly improved by incorporating trace amount of CsCl as a nucleating agent. The resulting Ge-S-CsCl chalcogenide glass ceramics (GSC ChGCs) exhibited a fine distribution of crystallites belonging to GeS2 and GeS mixture phase, which enhanced mechanical strength and narrowed the bandgap energy of the original glass. Nonlinear optical properties of the GSC ChGCs were investigated and it was found that their nonlinear absorption attribute was enhanced by increasing crystallinity, making them a promising candidate material for optical limiting devices.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Lizhu Li, Amey R. Khanolkar, Julien Ari, Pierre Deymier, Pierre Lucas
Summary: The elastic properties of Ge-Se glasses decrease with increasing irradiation intensity, particularly in glasses with high coordination numbers. The kinetics observed during irradiation suggest a thermal origin rather than a photoinduced electronic process. Experimental evidence indicates that the observed photoelastic phenomena are more likely the result of laser heating.
Article
Materials Science, Ceramics
V. E. Ceniceros-Orozco, J. Escorcia-Garcia, C. A. Gutierrez-Chavarria, V Agarwal, H. Uriel Lopez-Herrera
Summary: This study investigates the influence of CaO content on the properties of Sm3+-doped calcium sodium borosilicate glasses. The addition of CaO results in the formation of wollastonite nanocrystals and an increase in [BO4]- units in the glass structure. The PL intensity of Sm3+-doped glasses is enhanced by the addition of CaO, reaching a maximum at 30 mol%. The optimal doping concentration of Sm2O3 produces orange-reddish emission.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Shota Takemura, Takashi Takeda, Takayuki Nakanishi, Yukinori Koyama, Hidekazu Ikeno, Naoto Hirosaki
Summary: A dissimilarity measure of local structure using the Wasserstein distance is proposed to efficiently search for novel phosphors. This method provides quantitative explanations for the dissimilarity of local structures and can identify candidates for novel narrow-band phosphors based on correlations with the full width at half maximum. The approach is useful for the search of novel phosphors and expected to be applied in materials searches in other fields where local structures are important.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2021)
Article
Materials Science, Ceramics
Yuta Osawa, Kenichiro Iwasaki, Takayuki Nakanishi, Atsuo Yasumori, Yoshio Matsui, Toshiyuki Nishimura, Takeo Ohsawa, Hiroyo Segawa, Naoki Ohashi
Summary: The research focused on synthesizing bulk silicon oxynitride glasses by nitridation of SiO2 aerogels containing methyl groups, successfully increasing nitrogen content and demonstrating that the presence of nitrogen can enhance the glass transition temperature of the glass.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Instruments & Instrumentation
Takayuki Nakanishi, Makoto Tsurui, Jian Xu, Nao Takahashi, Takashi Takeda, Naoto Hirosaki
Summary: The study evaluated the effect of Ca substitution on the luminescence of Cr-doped YSGG garnet and found that Cr4+ broad emission can be improved by Ca substitution to control the photophysical properties. YSGG:Cr4+ with D-2d symmetry in a unique distorted tetrahedron is a promising NIR phosphor for light-emitting applications.
SENSORS AND MATERIALS
(2021)
Article
Chemistry, Physical
Motoshi Sera, Mika Yamamoto, Koji Tomita, Yusuke Yabara, Seiichiro Izawa, Masahiro Hiramoto, Takayuki Nakanishi, Koji Yoshida, Katsura Nishiyama
Summary: In this study, afterglow materials Eu2+, Dy3+@SrAl2O4 were synthesized using liquid-state reaction and surfactant-template method, both of which yielded similar morphologies, emission spectra, and mean afterglow time of approximately 10 seconds.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Yuuki Kitagawa, Jumpei Ueda, Kotaro Fujii, Masatomo Yashima, Shiro Funahashi, Takayuki Nakanishi, Takashi Takeda, Naoto Hirosaki, Kenta Hongo, Ryo Maezono, Setsuhisa Tanabe
Summary: The Eu3+-doped YSiO2N phosphor was synthesized, and its crystal structure was analyzed. The luminescence properties of the Eu3+ ions were characterized, showing different behaviors at different sites. This study provides insights into material design for near-UV excitable red phosphors activated with Eu3+ ions.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Kazutoshi Sekiguchi, Ken-ichi Katsumata, Hiroyo Segawa, Takayuki Nakanishi, Atsuo Yasumori
Summary: The research demonstrates that the particle loading density of silica nanoparticle monolayer arrays on nanoporous anodic aluminum oxide substrates is influenced by particle number concentration, pore size, and the ratio of particle size to pore size. The optimal particle loading density is achieved around a particle size/pore size ratio of 1.5.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Yuuki Kitagawa, Jumpei Ueda, Jian Xu, Takayuki Nakanishi, Takashi Takeda, Naoto Hirosaki, Setsuhisa Tanabe
Summary: The valence state of Eu ions in inorganic compounds can be easily influenced by the synthesis conditions. This study found that about half of Eu ions in the YSiO2N host were reduced to the divalent state during the sintering process, without any annealing processes. The prepared Eu2+/3+-doped YSiO2N sample showed anomalous deep-red to near-infrared luminescence under violet light illumination, and detailed spectroscopic analyses were conducted to understand its luminescent properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Jian Xu, Shiro Funahashi, Kohsei Takahashi, Takayuki Nakanishi, Naoto Hirosaki, Takashi Takeda
Summary: A new Eu-2(+) activated cyan-emitting oxynitride phosphor was discovered using a novel phosphor screening method, with a compact structure and a relatively narrow emission band. The cyan-emitting band exhibits a typical Eu-2(+) fluorescent lifetime and slight lifetime variation in different wavelength regions.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jumpei Ueda, Jian Xu, Shota Takemura, Takayuki Nakanishi, Shun Miyano, Hiroyo Segawa, Setsuhisa Tanabe
Summary: Persistent luminescence intensity is determined by the carrier storage capacity, with the density of Yb2+ electron trapping center and the recombination efficiency of electrons with hole-trapped ions playing crucial roles in the actual energy density detected.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Shota Takemura, Yukinori Koyama, Takayuki Nakanishi, Shiro Funahashi, Naoto Hirosaki, Hidekazu Ikeno, Takashi Takeda
Summary: A new narrow-band emitting phosphor K2ZnP2O7:Eu2+ was discovered by extracting promising crystal structures from a database. The synthesized K2ZnP2O7:Eu2+ showed a narrow-band emission at 440 nm with a full width at half maximum of 30 nm.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Shota Takemura, Yukinori Koyama, Takayuki Nakanishi, Shiro Funahashi, Naoto Hirosaki, Hidekazu Ikeno, Takashi Takeda
Summary: A new narrow-band emitting phosphor Na2Cs2Sr(B9O15)(2):Eu2+ was discovered using the local structure similarity with a known narrow-band emitting phosphor. Na2Cs2Sr(B9O15)(2):Eu2+ showed violet luminescence peaked at 417 nm with a narrow full-width at half-maximum of 26 nm (1497 cm(-1)).
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Takayuki Nakanishi, Yuichi Hirai, Jian Xu, Takashi Takeda, Shunsuke Watanabe, Atsuo Yasumori, Shou Hakamada, Yuichi Kitagawa, Yasuchika Hasegawa
Summary: Luminescent lanthanide coordination polymer crystals (LCPCs) are of great interest in materials chemistry due to their unique and customizable functional properties. These crystals offer a high degree of structural tunability, including size- and morphology-dependent properties, making them promising materials for various applications such as light emitting diodes.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuichi Hirai, Stann Van Baaren, Takahito Ohmura, Takayuki Nakanishi, Takashi Takeda, Yuichi Kitagawa, Yasuchika Hasegawa, Remi Metivier, Clemence Allain
Summary: In pursuit of new mechanically responsive luminescent materials, the study aims to differentiate triboluminescence (TL) from photoluminescence (PL). A beta-diketonate ligand with tert-butyl groups is used to quench Eu-III-centered PL and provide efficient photosensitization of Tb-III ions. Nanomechanical tests reveal the ductility of the crystals, making them ideal for accumulating deformation energy before breakage. Additionally, the study investigates the TL/PL color difference and mechanochromic luminescence (MCL) in a Tb-III/Eu-III heterodinuclear complex.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Shota Takemura, Yukinori Koyama, Takayuki Nakanishi, Shiro Funahashi, Naoto Hirosaki, Hidekazu Ikeno, Takashi Takeda
Summary: In this study, a new narrow-band emitting phosphor Na2Cs2Sr(B9O15)2:Eu2+ was discovered by analyzing the local structure similarity with a known narrow-band emitting phosphor. The synthesized phosphor exhibited a narrow peak emission at 417 nm and showed violet luminescence.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yuichi Kitagawa, Marina Kumagai, Takayuki Nakanishi, Koji Fushimi, Yasuchika Hasegawa
DALTON TRANSACTIONS
(2020)
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)
