Article
Green & Sustainable Science & Technology
M. Shobana, P. Balraju, P. Senthil Kumar, N. Muthukumarasamy, R. Yuvakkumar, Dhayalan Velauthapillai
Summary: In this study, the photoanodes in dye-sensitized solar cells were improved by using two different morphologies, one-dimensional hydrothermally synthesized rutile nanorods and nanoparticles of TiO2, to increase the short circuit current density of the device. The combination of both structures resulted in high Jsc by providing a better pathway for electron transportation and efficient light absorption. The crystalline nature of the synthesized bilayer film was confirmed, and UV-Vis and photoluminescence spectroscopy were used to study the absorption and emission properties of the samples. The solar cells with the nanorods/nanoparticles bilayer showed the highest efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Multidisciplinary
La Ode Agus Salim, Muhammad Zakir Muzakkar, Ahmad Zaeni, Maulidiyah Maulidiyah, Muhammad Nurdin, Siti Naqiyah Sadikin, Jaenuddin Ridwan, Akrajas Ali Umar
Summary: Doping TiO2 with sulfur (S) improves the photoelectrical properties of the photoanode, increasing the power conversion efficiency of dye-sensitized solar cells (DSSC).
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Dahyunir Dahlan, Marjoni Imamora Ali Umar, Siti Naqiyah Sadikin, Jaenudin Ridwan, Akrajas Ali Umar
Summary: This study reports that magnesium doping can enhance the photovoltaic performance of dye-sensitized solar cells by passivating electron traps and improving interfacial charge transfer.
Article
Materials Science, Multidisciplinary
Dongyang Wang, Wenhua Zou, Yexin Chen, Junhong Duan
Summary: In this study, Eu-doped TiO2 nanoparticles with different doping percentages were synthesized by sol-gel method. It was found that doping Eu element can modify the band structure of TiO2 and improve the efficiency of the solar cells.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Energy & Fuels
Iqbal Singh, Viplove Bhullar, Aman Mahajan
Summary: This study focuses on improving the performance of quantum dot-sensitized TiO2 photoanodes using graphene nanoribbons (GNRs) to reduce recombinations and enhance electron transport. The optimized photoanodes show higher power conversion efficiency and photocurrent density in quantum dot-sensitized solar cells and photoelectrochemical water-splitting applications.
Article
Engineering, Electrical & Electronic
Abolfazl Zare Bidaki, Hossein Abdizadeh, Erfan Pourshaban, Mohammad Saeed Shadabroo, Mohammad Reza Golobostanfard
Summary: This study reports on the modification of the photoanode and its impact on triple cation perovskite solar cells. By doping niobium into the TiO2 electron transport layer, improvements in photoanode structure and performance were achieved. The addition of niobium showed enhanced charge transfer resistance, transparency, and dopant density, leading to increased photocurrent generation and collection rates in the perovskite solar cells.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Anh Quynh Huu Le, Ngoc Nhu Thi Nguyen, Hai Duy Tran, Van-Huy Nguyen, Le-Hai Tran
Summary: A TiO2@MWCNTs nanocomposite photoanode was developed for photoelectrochemical water splitting, showing enhanced visible-light absorption capability and electron transfer rate, contributing to improved solar-to-hydrogen conversion efficiency.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Electrochemistry
Li Fu, Yimin Lin, Wanqing Fang, Rongzi Xv, Xiaoying Shang
Summary: This study demonstrates the synthesis of nitrogen-doped NiFeOOH modified TiO2 nanorods as photoanode for photoelectrochemical water splitting. The results show that substitutional nitrogen sites affect the oxygen vacancy content, which in turn enhances the charge separation/injection efficiencies. After NiFeOOH modification, the photocurrent density of the photoanode is significantly increased, attributed to the synergistic effect of substitutional nitrogen doping and NiFeOOH modification. This enhancement in performance and efficiency is important for the development of renewable energy technologies.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Bingcheng Sun, Bairui Tao, Yanchun Wang, Paul K. Chu
Summary: This paper demonstrates the application of a novel ternary nanocomposite MoS2/Ag/TiO2 photoanode in high efficiency plasma dye sensitive solar cell. The ternary nanocomposite MoS2/Ag/TiO2 was successfully synthesized without any hazardous substances. The addition of MoS2 improves the light absorption ability and electron transfer rate of the photoanode, leading to a significant enhancement in the photoelectric conversion efficiency of the dye sensitive solar cell.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Lara M. Daminelli, Ingrid Rodriguez-Gutierrez, Fabio A. Pires, Gabriel T. dos Santos, Jefferson Bettini, Flavio L. Souza
Summary: This study investigates the impacts of high-temperature thermal treatments on the design of (photo)-electrodes, revealing that self-diffusion does not significantly affect the final photocurrent. Instead, intentional modifications have a greater impact on the photoelectrochemical efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Shuya Zheng, Lu Han, Xudong Luo, Lilai Sun, Na Li, Zhibin Zhang, Xibao Li
Summary: The optimized CdS/PDA/Nafion photoanode with a multifunctional polymer passivation layer shows highly improved PEC water splitting activity and stability under visible light, providing new routes for engineering photoanodes in PEC hydrogen production devices.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Kai Song, Huilin Hou, Dongdong Zhang, Fang He, Weiyou Yang
Summary: We have developed an in-situ gas-phase cation exchange strategy to engineer single-atomic Co on the surface of TiO2 photoanode for solar water splitting. The atomically-dispersed Co with Co-O coordination can optimize the surface electronic structures, enhance light absorption, promote photoinduced charge transfer, lower the reaction barrier and accelerate reaction kinetics, leading to improved photoelectrochemical (PEC) behaviors. The TiO2-based photoanodes constructed in this study demonstrate robust stability up to 100 h and a photocurrent density up to 1.47 mA cm-2 at 1.23 V vs. RHE, surpassing pristine TiO2 and showing significant potential for applications.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Tae Sik Koh, Periyasamy Anushkkaran, Jun Beom Hwang, Sun Hee Choi, Weon-Sik Chae, Hyun Hwi Lee, Jum Suk Jang
Summary: In this study, an Al-Zr/HT photoanode was fabricated by magnetron sputtering deposition of an Al-layer on Zr-doped FeOOH samples. The correlations between the thicknesses of the sputtered Al-layer and the photoelectrochemical characteristics were investigated. The optimized Al-Zr/HT photoanode exhibited higher photocurrent and lower onset potential compared to the bare Zr/HT photoanode.
Article
Chemistry, Multidisciplinary
N. Mohsenzadegan, E. Nouri, M. R. Mohammadi
Summary: The improvement of photoconversion efficiency and operational stability of dye-sensitized solar cells (DSSCs) under environmental conditions is a major challenge for commercialization. Two approaches, namely increasing light scattering via embedding mesoporous TiO2 beads and delaying electrolyte leakage using gel polymer electrolyte, were employed to address this challenge. The highest photoconversion efficiency of 9.8% was achieved for the photoanode based on mesoporous TiO2 beads in the presence of gel polymer electrolyte, demonstrating longer operational stability under realistic ambient conditions.
Article
Chemistry, Physical
Sanjay Kumar Swami, Neetesh Kumar, Daniela R. Radu, Sung Woon Cho, Jongsu Lee
Summary: In this study, a post-lithium (Li) treatment on TiO2 films was performed to enhance the optoelectronic features and power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs). The Li treatment reduced defects and improved the crystallinity of the TiO2 films. DSSCs fabricated using Li-treated TiO2 films as photoanodes showed a performance improvement of approximately 20% and a PCE of 10.5%, compared to the control DSSC with a PCE of 8.7%. The enhanced performance was attributed to improved structural properties, efficient charge transport, and suppression of recombination due to the passivation of trap states.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fangfang Chang, Panpan Su, Utsab Guharoy, Runping Ye, Yanfu Ma, Huajun Zheng, Yi Jia, Jian Liu
Summary: This study synthesized a series of edge-enriched N, S co-doped carbon materials by pyrolysis of thiourea encapsulated in zeolitic imidazolate frameworks. These materials exhibited excellent oxygen reduction reaction (ORR) performance in alkaline medium, with low onset potential, good stability, and methanol tolerance. Density functional theory (DFT) calculations revealed that the carbon atoms adjacent to N and S are the probable active sites for ORR intermediates in the edge-enriched N, S co-doped carbon materials, due to their higher electron density, which enhances O2 adsorption and lowers the formation barriers of intermediates, thereby improving the ORR performance.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Xuefei Wang, Chao Han, Haitao Li, Panpan Su, Na Ta, Yanfu Ma, Zhenguo Huang, Jian Liu
Summary: Dual heteroatom-doped carbons, especially boron and nitrogen co-doped carbon, have attracted significant research attention in the field of energy storage and conversion. In this study, monodispersed hierarchical porous B,N@C nanocages were fabricated through the pyrolysis of zeolite imidazole framework, resulting in high catalytic activity for electrochemical oxygen reduction reaction.
Article
Chemistry, Physical
Kai Wang, Chen Han, Fuping Li, Yu Liu, Zongping Shao, Lihong Liu, Shaobin Wang, Shaomin Liu
Summary: A series of strontium cobaltite perovskite oxides with different dopants were designed and investigated for their catalytic activity in degrading aqueous organic pollutants. The study found that the crystalline structure and surface properties of the oxides are correlated with their catalytic activity, with the Co-O bond length being a key factor in peroxymonosulfate (PMS) activation. This study provides new insights for the design of efficient perovskite oxide catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Chemical
Chenyang Deng, Zhifei Hu, Mingming Wang, Yanan Wang, Zhigang Wang, Tianjia Chen, Xiaoyao Tan, Shaomin Liu
Summary: The sintering process is crucial for nickel hollow fiber membranes (NHFMs), and optimizing the sintering conditions significantly affects the hydrogen permeability and qualified rate of the membranes. This study extensively investigates the effects of sintering conditions on microstructure and hydrogen permeation of NHFMs. Results show that smaller metal grain size leads to enhanced hydrogen permeability, and sintering temperatures significantly affect the grain size and activation energy. Increasing sintering time and hydrogen concentration have minor effects on grain size and hydrogen permeation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Zhiyuan Liu, Shiying Fan, Xinyong Li, Zhaodong Niu, Jing Wang, Chunpeng Bai, Jun Duan, Moses O. Tade, Shaomin Liu
Summary: We demonstrate a composite photocatalyst for nitric oxide conversion with a Cu-Fe alloy, graphitic carbon nitride (g-C3N4), and ZnIn2S4. The superior photocatalytic performance of 6.45-fold that of g-C3N4 was confirmed. The delay effect on charge recombination was observed through time-resolved photoluminescence, and heterojunction establishment was attributed to the hole-trapping ability of ZnIn2S4. The combined effects of the Cu-Fe alloy were confirmed by NO-specific adsorption and conversion experiments, and the active species involved were examined via electron spin resonance. Density functional theory calculations revealed the molecular mechanisms of photocatalytic conversion of NO to NO3-. Therefore, g-C3N4|ZnIn2S4|CuFe has potential for sustainable and efficient pollutant conversion.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Chuangwei Liu, Derek Hao, Jin Ye, Sheng Ye, Fengling Zhou, Hongbo Xie, Gaowu Qin, Jiating Xu, Jian Liu, Song Li, Chenghua Sun
Summary: The room-temperature nitrogen reduction reaction (NRR) has great importance in the fertilizer industry and fundamental catalysis science. This study demonstrates the knowledge-driven design of boron-doped TiO2 as a photocatalyst for NRR. Among 54 catalysts, boron-doped anatase TiO2(101) is identified as an exceptional NRR catalyst with strong visible-light absorption and excellent reactivity. Experimental validation shows that B-doped TiO2 nanosheet achieves high ammonia production under simulated sunlight, renewing the performance record for Ti-based photocatalysts for NRR. This work highlights the importance of dual active site catalysts for nitrogen activation and reduction and demonstrates the capacity of knowledge-driven catalyst design.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gaomin Ning, Yan Zhang, Chunjing Shi, Chen Zhao, Mengmeng Liu, Fangfang Chang, Wenlong Gao, Sheng Ye, Jian Liu, Jing Zhang
Summary: Engineering the surface structure of semiconductor is a promising strategy for improving charge separation and transfer efficiency in photocatalysis. In this study, C decorated hollow TiO2 photocatalysts (C-TiO2) were designed and fabricated. The optimal C content and Ti-O-C bonds in C-TiO2 were found to enhance light absorption and promote charge separation and transfer, leading to a 5.5-fold higher activity in H2 evolution compared to TiO2. This work provides a feasible strategy for rational design and construction of surface-engineered hollow photocatalysts to enhance photocatalytic performance.
Review
Chemistry, Multidisciplinary
Yash Boyjoo, Yonggang Jin, Haitao Li, Guangyu Zhao, Hua Guo, Jian Liu
Summary: New technologies are being actively explored for CO2 reuse to achieve net zero carbon emissions. The low efficiency of photocatalytic reactions is due to fast recombination of photogenerated electron-hole pairs within semiconductors, which can be addressed by photoelectrocatalysis (PEC) that utilizes an external voltage bias to reduce recombination rates. However, PEC still faces challenges such as low electrical conductivity and insufficient visible light absorption, requiring the engineering and synthesis of more efficient photoelectrocatalysts. This review examines strategies to improve PEC materials and investigates nanostructured catalysts designed for PEC CO2 reduction reaction, providing future perspectives and trends in this exciting research field.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tianyi Liu, Miao Yan, Shan Zhou, Qirui Liang, Yanjun He, Xin Zhang, Hui Zeng, Jian Liu, Biao Kong
Summary: A multifunctional TiO2-SiO2-mesoporous carbon nanomotor with an asymmetric matchstick-like structure is synthesized via an interfacial superassembly strategy. The spatially anisotropic distribution of the photocatalytic TiO2 domain and photothermal carbon domain enables multichannel control of the motion, where the speed can be regulated by energy input and the directionality can be regulated by wavelength. This mechanism-switchable nanomotor is employed in wavelength-regulated targeted cargo delivery on a microfluidic chip.
Article
Materials Science, Ceramics
Yanyong Shi, Jie Wang, Claudia Li, Jian Song, Bo Meng, Jaka Sunarso, Xiuxia Meng, Naitao Yang, Xiaoyao Tan, Shaomin Liu
Summary: La0.6Ca0.4Co0.2Fe0.8O3-8 (LCCF) ceramic powder was used to fabricate LCCF hollow fiber (HF) membranes via a sol-gel method. Three types of LCCF HF membranes were developed by changing the composition of the internal coagulation bath. The best performance was achieved using a mixture of NMP + EtOH. The developed LCCF membrane exhibited high oxygen transport capability and good stability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Biotechnology & Applied Microbiology
Haitao Li, Jian Liu
Summary: As an emerging area, single-atom catalysts (SACs) have attracted significant research attention in the past decade due to their maximum atom utilization and excellent catalytic activity. Recently, SACs have been applied to advanced oxidation processes for organic wastewater remediation using peroxymonosulfate (PMS). This perspective article provides an overview of synthetic methods and characterization techniques for SACs derived from metal-organic frameworks (MOFs), highlights their degradation applications for various refractory organic pollutants, discusses the catalytic mechanisms and reactive species, and proposes future development directions for MOF-based SACs in environmental remediation.
CURRENT OPINION IN CHEMICAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Yanfu Ma, Liwei Wang, Wantong Zhao, Tianyi Liu, Haitao Li, Wenhao Luo, Qike Jiang, Wei Liu, Qihua Yang, Jun Huang, Riguang Zhang, Jian Liu, G. Q. Max Lu, Can Li
Summary: In this study, a hollow nanoarchitecture of MnOx-encapsulated Pt nanoparticles was designed as a nanoreactor to investigate the reactant enrichment in a mesoscopic hollow void. The superior cinnamyl alcohol (COL) selectivity originates from the selective adsorption of cinnamaldehyde (CAL) and the rapid formation and desorption of COL in the MnOx shell. The superb performance of 95% CAL conversion and 95% COL selectivity is obtained at only 0.5 MPa H-2 and 40 min.
NATIONAL SCIENCE REVIEW
(2023)
Review
Chemistry, Multidisciplinary
Bin Wang, Tao Li, Zhigang Wang, Mohd Hafiz Dzarfan Othman, Shaomin Liu, Rui Xiao
Summary: Hydrogen is a carbon-free energy carrier and water is an environmentally-friendly source for its production. Coupling catalytic water splitting with a mixed ionic-electronic conducting (MIEC) membrane reactor has shown great potential in enhancing hydrogen production. This review comprehensively covers critical aspects of this process, including materials, structure, morphology, catalysts, and operating conditions. Furthermore, integrating methane-related oxidation reactions can further intensify the process and improve the hydrogen production rate. Future development trends are also summarized.
Article
Chemistry, Physical
Jie Wang, Baolei Shao, Claudia Li, Jian Song, Bo Meng, Xiuxia Meng, Naitao Yang, Sibudjing Kawi, Jaka Sunarso, Xiaoyao Tan, Shaomin Liu
Summary: In this study, a ceramic hydrogen permeable membrane reactor was developed for the simultaneous reaction and separation process, allowing the production of synthesis gas and pure hydrogen while reducing greenhouse gas emissions.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Yu Qin, Shiying Fan, Jinsuo Gao, Moses O. Tade, Shaomin Liu, Xinyong Li
Summary: Cu-doped CoMn2O4 catalysts showed excellent catalytic performance in NO reduction by CO, with Cu0.3Co0.7Mn2O4 achieving 100% NO conversion and 80% N2 selectivity at 250 degrees C. Structural analysis revealed that the introduced Cu replaces some Co in tetrahedral coordination, resulting in a strong synergistic effect between different metals.
ACS APPLIED MATERIALS & INTERFACES
(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)
