Article
Engineering, Electrical & Electronic
Varishetty Madhu Mohan, Kenji Murakam, Madhavi Jonnalagadda, V. R. Machavaram
Summary: Pure TiO2 and surface-modified TiO2 films were developed using spray pyrolysis technique, with similar crystal structure and optical absorption properties. However, the addition of ZnO layer in SMT films increased impedance and hindered reverse electron transmission. Thus, the efficiency of DSSCs improved from 8.25% to 9.3%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Hafiz Muhammad Asif Javed, Wenxiu Que, Muhammad Shahid, Akbar Ali Qureshi, M. Afzaal, M. Salman Mustafa, Shahid Hussain, Abdullah Saad Alsubaie, Khaled H. Mahmoud, Zeinhom M. El-Bahy, Ling Bing Kong
Summary: The research investigated the effects of anodization parameters on the growth behavior and top morphology of TiO2 nanotubes. Different TiO2 nanostructures were obtained through electrochemical anodization of Ti foil by varying parameters, and dye sensitized solar cells based on TiO2 nanohexagons showed the highest power conversion efficiency. The efficiency of DSSC was further enhanced through modifications of TiO2 nanohexagons with TiO2 nanoparticles derived from TiCl4.
SURFACES AND INTERFACES
(2021)
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, Physical
Sandeep B. Wategaonkar, Vinayak G. Parale, Sawanta S. Mali, Chang-Kook Hong, Rani P. Pawar, Parvejha S. Maldar, Annasaheb V. Moholkar, Hyung-Ho Park, Balasaheb M. Sargar, Raghunath K. Mane
Summary: This study utilized the one-step hydrothermal method to synthesize Sn-doped TiO2 thin films, investigating the influence of different Sn content on the performance of dye-sensitized solar cells. The 3% Sn-TiO2 thin film showed the highest efficiency in DSSCs, outperforming other samples.
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Multidisciplinary Sciences
Brishty Deb Choudhury, Chen Lin, Sk Md Ali Zaker Shawon, Javier Soliz-Martinez, Hasina Huq, Mohammed Jasim Uddin
Summary: The study presents an improved photoanode with hierarchical microstructure of photoactive TiO2, along with the deposition of plasmonic nanoparticle Ag using photoreduction method. The branched structure of the photoanode increases dye loading, while Ag nanoparticles play multiple roles in enhancing light-to-current conversion efficiency. This novel design shows remarkably higher photon conversion efficiency compared to traditional structures.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
S. C. Poh, H. Ahmad, C. H. Ting, H. T. Tung, H. K. Jun
Summary: A flexible DSSC was fabricated in this study, where the impact of different ratios of TiO2 powder to ethanol on performance was investigated, along with the addition of hydrochloric acid to enhance particle connectivity. The optimum conversion efficiency of the prepared film was 2.12%, with a ratio of TiO2 powder to ethanol of 25 wt%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
N. Sriharan, T. S. Senthil, P. Soundarrajan, Misook Kang
Summary: TiO2 nanorods were synthesized from colloidal titanate using a hydrothermal method, and Mg metallic ions were doped to study their influence on the growth of TiO2 nanorods. The introduction of Mg dopant induced constraint stress in the nanorods, resulting in a shift in preferentially oriented crystallographic plane. The crystallographic structures of TiO2 nanorods remained unchanged, but the surface to volume ratio and absorption capacity shifted due to Mg doping. This physical property change was confirmed by EDS analysis. The doped TiO2 nanorods showed improved performance as photoelectrodes in dye-sensitized solar cells, with the 2 mol.% Mg doped TiO2 nanorods achieving a high power conversion efficiency of 6.36%.
APPLIED SURFACE SCIENCE
(2022)
Review
Optics
N. S. Noorasid, F. Arith, A. N. Mustafa, M. A. Azam, S. Mahalingam, P. Chelvanathan, N. Amin
Summary: Research on dye-sensitized solar cells (DSSCs) has made significant advancements in the past two decades, particularly in the study of flexible solar cells. However, the temperature limitations faced by plastic substrates pose a challenge to the performance of flexible DSSCs. Researchers have explored various methods to address this issue and discussed the application of different photoanode materials.
Article
Environmental Sciences
Muhammad Umair Shahid, Norani Muti Mohamed, Ali Samer Muhsan, Siti Nur Azella Zaine, Mehboob Khatani, Asfand Yar, Waqar Ahmad, Muhammad Babar Hussain, Asma A. Alothman, Mohammed Sheikh Saleh Mushab
Summary: Dye-sensitized solar cells (DSSCs) have attracted attention for their low-cost processing, ability to work in diffuse light, and potential for building integrated photovoltaics (BIPV). However, their efficiency is low due to multiple issues. This study introduces a graphene/TiO2 scattering layer that enhances electron transport and light scattering. Results show that with 0.01 wt% graphene, a 33% higher photoconversion efficiency (PCE) was achieved compared to without scattering layer. However, PCE decreases at >0.01 wt% graphene due to loss of diffuse reflectance and higher optical absorption.
Article
Engineering, Electrical & Electronic
Chao-Nan Chen, Yu-Wu Wang, Ying-Rong Ho, Chia-Ming Chang, Wei-Chieh Huang, Jung-Jie Huang
Summary: This study utilized liquid-phase deposition to fabricate a TiO2 film on anodizing TNT, increasing the length and dye adsorption capacity of the nanotubes, ultimately enhancing the photoelectric conversion efficiency of the DSSC device.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Bandana Ranamagar, Isaac Abiye, Fasil Abebe
Summary: The Rhodamine-6G derivative Rhd and its metal complexes with aluminum and chromium ions were synthesized and characterized using UV-vis and fluorescence spectroscopy. Dye-sensitized solar cells (DSSCs) were fabricated with Rhd and the metal complexes, and their solar-to-electric power efficiencies were determined through current-density measurements and Electrochemical Impedance Spectroscopy (EIS). The Rhd and Cr3+-sensitized solar cell showed the highest solar to electric power efficiency at 0.16%.
Article
Polymer Science
H. Abdullah, Savisha Mahalingam, Kang Jian Xian, Abreeza Manap, Mohd Hafiz Dzarfan Othman, Md Akhtaruzzaman
Summary: This study investigates the improvement of charge transfer in flexible dye-sensitized solar cells (FDSSCs) by doping nickel (Ni) in the TiO2 layer. It is found that a low amount of Ni doping (15%) can enhance charge transport and reduce electron recombination rate, while higher amount Ni doping (>45%) deteriorates cell performance by causing severe agglomeration issues and increasing electron recombination rate. The optimal Ni doping level in TiO2-based FDSSCs is discussed in this work.
Article
Engineering, Electrical & Electronic
Tse-Wen Huang, Lu-Yin Lin, Siao-Ting Hong
Summary: This study presents a novel approach to fabricate TiO2 nanoparticle-decorated TiO2 microcone array (TMC) with holes as the semiconductor on the photoanode of FDSC using a simple two-step process. By optimizing with 30 mM H2SO4, the FDSC achieved an efficiency of 2.52% and a collection efficiency of 92.21%, outperforming the FDSC with a pure TMC photoanode.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Energy & Fuels
Kirti Sahu, Mahesh Dhonde, Vemparala Venkata Satyanarayana Murty
Summary: The incorporation of Cu into TiO2 microstructure was found to enhance the V-oc of DSSCs, leading to an improvement in efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
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)