Article
Nanoscience & Nanotechnology
Huan Wang, Rikard Emanuelsson, Christoffer Karlsson, Patric Jannasch, Maria Stromme, Martin Sjodin
Summary: Rechargeable batteries utilizing redox-active organic compounds are being seen as a promising energy storage technology for the future. By functionalizing redox-active groups onto conducting polymers to create conducting redox polymers (CRPs), the low conductivity and dissolution issues of redox-active compounds can be effectively addressed. Through innovative techniques such as postdeposition polymerization, high-performance CRPs have been developed and optimized to achieve theoretical capacities, resulting in the creation of an efficient all-organic proton battery with impressive capacity retention.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jilong Gu, Jie Luo, Jie Yang, Suai Tan, Caihong Wang, Yong Wu
Summary: The dynamic self-assembly of liquid crystals promotes the formation of hydrogen bond networks, which are crucial for anhydrous proton conduction. By synthesizing protic 1-alkyl-3H-imidazolium hydrogen sulfates with different alkyl chain lengths, liquid crystals with inherently exchangeable protons for proton conduction are achieved.
Article
Chemistry, Analytical
Masanori Yamada, Takaaki Sugihara, Tetsuya Yamada
Summary: The study found that composite material prepared by mixing protamine and methanediphosphonic acid (MP) exhibited acid-base composite properties. At 160 degrees Celsius, the composite material showed high anhydrous proton conductivity, with the proton conduction mechanism relying on the transfer of protons to the proton defect site in the MP molecule.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Timo Stettner, Andrea Balducci
Summary: The development of new and especially safer electrolytes is crucial for modern electrochemical energy storage devices, with ionic liquids showing promise as a potential solution. This article critically compares protic ionic liquids (PILs) with aprotic ionic liquids, and analyzes their use as electrolytes in supercapacitors and batteries. The manuscript also discusses the challenges and outlook for improving and expanding the use of PILs in energy storage devices.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Characterization & Testing
Jingjing Guo, Ailian Wang, Wenxi Ji, Taoyi Zhang, Haolin Tang, Haining Zhang
Summary: The study demonstrates that polybenzimidazole grafted with protic ionic liquid moieties is an effective catalyst binder for Pt/C catalysts, showing improved catalytic activity for oxygen reduction compared to commercial Nafion. The fuel cell assembled using this catalyst binder also exhibits significantly higher peak current density than that assembled using pristine polybenzimidazole, especially under anhydrous conditions at 160°C.
Article
Multidisciplinary Sciences
Tran Anh Tu, Nguyen Huu Huy Phuc
Summary: In this study, ImidazoleTriflate (ITF)-SiO2 composites xITF-(100-x)SiO2 were successfully prepared by planetary ball-milling method, and the structure of the composites was studied using TG-DTA, XRD, and FT-IR methods. It was found that the crystal size of imidazole triflate decreased as its loading in xITF-(100-x)SiO2 decreased, which significantly influenced the sample properties.
Article
Chemistry, Physical
M. Anandha Jothi, D. Vanitha, S. Asath Bahadur, N. Nallamuthu
Summary: Proton conducting polymer blend electrolytes based on cornstarch and PVP with NH4Br were prepared by solution casting technique. The addition of NH4Br enhanced the amorphous nature of the blend confirmed by XRD, and caused changes in peak intensity, peak shape, and position in FTIR, indicating complex formation between the polymer and salt. The highest conductivity was observed in the 30 wt.% NH4Br added system at 358 K. The conduction mechanism involves quantum mechanical tunneling at mid-frequency and large polaron tunneling at higher frequency.
Article
Energy & Fuels
Paulo Joaquim Nunes, Rui Francisco Pinto Pereira, Sonia Pereira, Maria Manuela Silva, Elvira Fortunato, Veronica de Zea Bermudez, Mariana Fernandes
Summary: Two di-ureasils with oxyethylene segments were prepared by the sol-gel method, doped with ionic liquid and lithium salt. The resulting films were translucent, flexible, hydrophobic, and had low surface roughness. The optimized sample exhibited good ionic conductivity and was used in prototype electrochromic devices with promising performance.
Article
Materials Science, Multidisciplinary
Hiroki Yamada, Koji Ohara, Satoshi Hiroi, Atsushi Sakuda, Kazutaka Ikeda, Takahiro Ohkubo, Kengo Nakada, Hirofumi Tsukasaki, Hiroshi Nakajima, Laszlo Temleitner, Laszlo Pusztai, Shunsuke Ariga, Aoto Matsuo, Jiong Ding, Takumi Nakano, Takuya Kimura, Ryo Kobayashi, Takeshi Usuki, Shuta Tahara, Koji Amezawa, Yoshitaka Tateyama, Shigeo Mori, Akitoshi Hayashi
Summary: Controlling Li ion transport in glasses is crucial for developing all-solid-state batteries. Li3PS4 glass, a solid electrolyte candidate, shows a dynamic coupling effect between Li+ cation mobility and PS43- anion libration, known as the paddlewheel effect. Additionally, it exhibits a coordinated cation diffusion effect (cation-cation interactions) that enhances Li ion transport. The correlation between Li+ ions in the glass structure can be determined by evaluating their valence oscillations, providing insights for the development of new solid electrolytes.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Luke Wylie, Monika Keri, Antal Udvardy, Oldamur Holloczki, Barbara Kirchner
Summary: Mixing weak acids and bases can create complex binary mixtures known as pseudo-protic ionic liquids, with unpredictable physicochemical properties. This study investigated 1-methylimidazole-acetic acid mixtures, revealing the effects of ionization and component excess on properties such as density, diffusion coefficients, and hydrogen bonding structure. The conductivity of the system was found to be governed by multiple factors, including the dissociation of ion pairs and the occurrence of Grotthuss diffusion. These findings have implications for designing novel electrolytes and proton conducting systems.
Article
Chemistry, Multidisciplinary
Sascha Gehrke, Promit Ray, Timo Stettner, Andrea Balducci, Barbara Kirchner
Summary: The study found that at very low concentrations, water is well dispersed and best characterized as shared solvent molecules; at higher concentrations, water forms larger aggregates and increasingly approaches a bulk-like state; the rotational and librational dynamics of water molecules become faster with increasing concentration, while translational dynamics become slower, and all dynamics are faster with higher temperature.
Article
Chemistry, Multidisciplinary
Giovanna Maresca, Paolo Casu, Elisabetta Simonetti, Sergio Brutti, Giovanni Battista Appetecchi
Summary: This paper investigates the electrochemical stability of various ionic liquids in Na-ion devices and explores the influence of contaminants on the electrolyte's robustness. Preliminary tests on Na/hard carbon and Na/alpha-NaMnO2 half cells were conducted to evaluate the performance of selected ionic liquid electrolytes.
APPLIED SCIENCES-BASEL
(2022)
Article
Biochemistry & Molecular Biology
Christian Rodenbuecher, Yingzhen Chen, Klaus Wippermann, Piotr M. Kowalski, Margret Giesen, Dirk Mayer, Florian Hausen, Carsten Korte
Summary: Protic ionic liquids show promising application prospects in fuel cells by increasing operation temperatures, facilitating water and heat management, and enhancing efficiency. Experimental and theoretical studies reveal a layered structure at the electrolyte-electrode interface, indicating that the presence of water can significantly affect the system's electrochemical performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Jose M. Otero-Mato, Alejandro Rivera-Pousa, Hadrian Montes-Campos, Oscar Cabeza, A. Heuer, D. Diddens, Luis M. Varela
Summary: This study investigates the stability and structure changes of binary mixtures of several protic ionic liquids with polyethylene oxide using molecular dynamics simulations. It is found that ethylammonium acetate has a wider solubility range compared to other ionic liquids, and its interaction with the polymer is limited. The presence of the polymer has minimal interference on the single-particle dynamics and lithium transport in the liquid phase, contrary to previous results with other ionic liquids.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Ceramics
Sara Paydar, Bin Zhu, Jing Shi, Nabeela Akbar, Quazi Arif Islam, Sining Yun, Akbar Muhammad, Mohammad Hossein Paydar, Yan Wu
Summary: Proton conducting ceramic fuel cells (PCFCs) are getting more attention due to their lower operating temperatures (<600 degrees C) and affordable ionic conductivity. CeO2 nanosheets mainly exposed to the (111) plane exhibit super proton conductivity and maximum power density. The difference in Ce3+/Ce4+ ratios and oxygen vacancies on the surface play key roles in proton transport. The theoretical calculation shows that protons move more easily on the CeO2 (111) facet with smaller binding energy and lower energy barrier for H-O formation, leading to superior proton conduction for the nanosheet morphology over nanoparticles.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Joao C. Barbosa, Daniela M. Correia, Manuel Salado, Renato Goncalves, Stanislav Ferdov, Veronica de Zea Bermudez, Carlos M. Costa, Senentxu Lanceros-Mendez
Summary: This study developed a three-component solid polymer electrolyte with good performance. It used poly(vinylidene fluoride-co-hexafluoropropylene) as a binder, 1-butyl-3-methylimidazolium thiocyanate ionic liquid as an ionic conductive component, and different zeolite structures to improve the ionic conductivity and electrochemical stability.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Energy & Fuels
Paulo Joaquim Nunes, Rui Francisco Pinto Pereira, Sonia Pereira, Maria Manuela Silva, Elvira Fortunato, Veronica de Zea Bermudez, Mariana Fernandes
Summary: Two di-ureasils with oxyethylene segments were prepared by the sol-gel method, doped with ionic liquid and lithium salt. The resulting films were translucent, flexible, hydrophobic, and had low surface roughness. The optimized sample exhibited good ionic conductivity and was used in prototype electrochromic devices with promising performance.
Article
Plant Sciences
P. Nunes, S. C. Nunes, R. F. P. Pereira, R. Cruz, J. Rocha, A. P. Ravishankar, L. Fernandes, E. Bacelar, S. Casal, S. Anand, A. L. Crespi, M. Fernandes, V. de Zea Bermudez
Summary: The restricted wild occurrence of Agapanthus africanus in Cape province, South Africa and its popularity as an ornamental species led to an analysis of its cuticular wax attributes. The leaf surfaces exhibit both hydrophilic and hydrophobic properties, and contain short-chain monocaprylin monoglyceride and long-chain alcohols. These features enable the A. africanus leaf cuticle to efficiently trap water and resist water transport.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Biochemistry & Molecular Biology
Lara L. Reys, Simone S. Silva, Diana Soares da Costa, Luisa C. Rodrigues, Rui L. Reis, Tiago H. Silva
Summary: The study aimed to create agarose/fucoidan hydrogels as a potential biomaterial for diabetes therapeutics. The hydrogels were produced by combining fucoidan and agarose, marine polysaccharides derived from seaweeds, and a thermal gelation process. Rheological tests showed a non-Newtonian and viscoelastic behavior, and the mechanical behavior indicated that increasing agarose concentrations resulted in hydrogels with higher Young's modulus. Encapsulating pancreatic cells in the hydrogels showed the ability to sustain cell viability and promote self-organization of pancreatic beta cells into pseudo-islets.
Article
Polymer Science
Duarte Nuno Carvalho, Flavia C. M. Lobo, Luisa C. Rodrigues, Emanuel M. M. Fernandes, David S. S. Williams, Andrew Mearns-Spragg, Carmen G. G. Sotelo, Ricardo I. I. Perez-Martin, Rui L. L. Reis, Michael Gelinsky, Tiago H. H. Silva
Summary: The self-repair capacity of human tissue is limited, leading to the development of tissue engineering for tissue regeneration. This study proposes the development and characterization of innovative polymeric membranes formed by blending marine origin polymers as biomaterials for tissue regeneration. The polymeric membranes demonstrated promising chemical and physical properties, suitable for tissue engineering approaches, particularly for the regeneration of damaged articular cartilage.
Article
Nanoscience & Nanotechnology
Joao C. Barbosa, Daniela M. Correia, Arkaitz Fidalgo-Marijuan, Renato Goncalves, Stanislav Ferdov, Veronica de Zea Bermudez, Senentxu Lanceros-Mendez, Carlos M. Costa
Summary: Renewable energy sources require efficient energy storage systems, and lithium-ion batteries are a standout option. However, there is still room for improvement in terms of safety and cycling stability. By implementing solid polymer electrolytes (SPEs) instead of the commonly used separator/electrolyte system, these issues can be addressed. This study focuses on the development of ternary SPEs based on specific host polymers, fillers, and ionic liquids to enhance the performance of lithium-ion batteries in terms of conductivity, stability, and cyclability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Joao Carlos Barbosa, Daniela Maria Correia, Paulo Nunes, Mariana Fernandes, Arkaitz Fidalgo-Marijuan, Renato Goncalves, Stanislav Ferdov, Veronica de Zea Bermudez, Senentxu Lanceros-Mendez, Carlos Miguel Costa
Summary: In this study, three-component solid polymer electrolytes (SPEs) based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) as host polymer, clinoptilolite zeolite, and different ionic liquids (ILs) were produced and characterized. The influence of IL anion and cation on various properties of the SPEs and battery cycling performance were studied. The results showed that [SCN]- anion was the most suitable for SPE applications and the ionic conductivity depended on the IL type. The best battery performance was observed for the SPE based on [BMIM][SCN].
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Biomaterials
Catarina S. Miranda, A. Francisca G. Silva, Catarina L. Seabra, Salette Reis, M. Manuela P. Silva, Silvia M. M. A. Pereira-Lima, Susana P. G. Costa, Helena P. Felgueiras, Natalia C. Homem
Summary: In chronic wound (CW) scenarios, Staphylococcus aureus-induced infections are very prevalent. This leads to abnormal inflammatory processes, in which proteolytic enzymes, such as human neutrophil elastase (HNE), become highly expressed. A co-axial drug delivery system was developed to incorporate the antimicrobial peptide AAPV, which can suppress HNE activity, and release it controlled by N-carboxymethyl chitosan (NCMC), an antimicrobial polymer effective against Staphylococcus aureus.
BIOMATERIALS ADVANCES
(2023)
Article
Chemistry, Analytical
Marita A. Cardoso, Helena M. R. Goncalves, Frank Davis
Summary: The understanding of the role of Reactive Oxygen Species (ROS) in biological media has been evolving. ROS have been associated with various health conditions, but they also play a role in the immune response and can be used for therapeutic purposes. However, the short lifespan and limited distribution of ROS have posed challenges to their application. Therefore, the development of innovative sensing strategies for monitoring ROS levels and immune response in real time is crucial.
Article
Chemistry, Multidisciplinary
Sandra F. H. Correia, Lianshe Fu, Lilia M. S. Dias, Rui F. P. Pereira, V. de Zea Bermudez, Paulo S. Andre, Rute A. S. Ferreira
Summary: The energy efficiency of buildings can be greatly improved by utilizing renewable energy sources. Luminescent solar concentrators (LSCs) based on carbon dots in an aqueous solution and dispersed in organic-inorganic hybrid matrices have been developed as transparent planar and cylindrical LSCs, which show promising potential as building windows. These LSCs have high light transmittance (about 91%) and color rendering index (up to 97), with optical and power conversion efficiency values of 5.4 +/- 0.1% and 0.18 +/- 0.01%, respectively. Moreover, these devices can also function as temperature sensors, enabling the fabrication of autonomous power mobile temperature sensors.
NANOSCALE ADVANCES
(2023)
Review
Chemistry, Multidisciplinary
J. C. Barbosa, D. M. Correia, R. Goncalves, V. de Zea Bermudez, S. Lanceros-Mendez, C. M. Costa
Summary: This article presents the potential and development trends of using ionic liquids to improve the sustainability of lithium-ion batteries. By replacing harmful battery components with environmentally friendlier materials, ionic liquids have the potential to enhance the sustainability of energy storage systems without compromising performance.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
J. C. Barbosa, D. M. Correia, R. Goncalves, V. de Zea Bermudez, S. Lanceros-Mendez, C. M. Costa
Summary: This article presents a perspective on the use of ionic liquids for lithium-ion batteries, focusing on their potential applications and their role in replacing harmful battery components. The future trends in using ionic liquids for battery systems are discussed, highlighting their ability to address sustainability issues without compromising performance. Overall, the article emphasizes the importance of ionic liquids in energy storage systems.
MATERIALS CHEMISTRY FRONTIERS
(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)
