Article
Chemistry, Physical
Xiaochen Wang, Hualong Ma, Hanqing Peng, Yingming Wang, Gongwei Wang, Li Xiao, Juntao Lu, Lin Zhuang
Summary: H-2-O-2 polymer electrolyte fuel cells (PEFCs) are promising renewable energy conversion technologies, but face challenges with mass transport and water management at high current densities. The novel i-FF-GDL design proposed by the authors, utilizing 3D printing, shows up to a 15% increase in peak power density under high pressure conditions.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Diego Zapardiel, Pablo A. Garcia-Salaberri
Summary: The study highlights the importance of designing appropriate MEA porous media and interfaces in optimizing proton exchange fuel cells (PEFCs). By modeling water capillary transport and gas diffusion using a hybrid model, various characteristics under different conditions can be effectively captured, providing insights for enhancing PEFC performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Energy & Fuels
Jonghyun Son, Sukkee Um, Young-Beom Kim
Summary: This study used computational fluid dynamics to analyze the impact of directional permeability of the gas diffusion layer on PEMFC performance in models with three types of channels. Results showed that x direction permeability had the most influence on performance, particularly for the serpentine channel type.
Article
Chemistry, Physical
Satoshi Sakaida, Yutaka Tabe, Kotaro Tanaka, Mitsuru Konno
Summary: This study investigated water transport in a novel gas diffusion layer (GDL) with hydrophilic-hydrophobic patterns. It was found that water motion in hydrophilic GDL could be reproduced by a scale model, and computational load could be reduced by using Capillary numbers (Ca) similar to 10(-3). Simulation with Ca similar to 10(-3) showed that a GDL with a straight region of contact angle 50 degrees minimized water accumulation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Raymond Guan, Aimy Bazylak
Summary: This study resolves the sources of oxygen transport resistance in a polymer electrolyte membrane (PEM) fuel cell using pore network modeling and empirical modeling. Operando imaging and electrochemical performance testing results are applied to the pore network model and empirical model, respectively. The impact of liquid water on oxygen transport resistance is typically attributed to the accumulation of liquid water within the gas diffusion layer, but the empirical models overpredict the contribution of the substrate to oxygen transport resistance. Statistical analysis shows that the discrepancy can be attributed to oxygen transport resistance in locations related to water production but independent of relative humidity.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Kaustubh Khedekar, Pongsarun Satjaritanun, Sarah Stewart, Jonathan Braaten, Plamen Atanassov, Nobumichi Tamura, Lei Cheng, Christina M. Johnston, Iryna Zenyuk
Summary: This study investigates the effect of gas diffusion layers (GDLs) on electrocatalyst degradation in polymer electrolyte fuel cells (PEFCs). The results show that GDLs do not significantly affect electrocatalyst degradation, although MEAs with cracked microporous layers (MPLs) exhibit higher electrocatalyst loading loss and a lower and more heterogeneous increase in average electrocatalyst nanoparticle size.
Article
Chemistry, Physical
Hong Xu, Shinya Nagashima, Hai P. Nguyen, Keisuke Kishita, Federica Marone, Felix N. Buchi, Jens Eller
Summary: This study investigates the transport mechanism of water in PEFCs using X-ray tomographic microscopy and finds that the dominant factor of water transport varies at different temperatures. At 80 degrees Celsius, phase-change-induced water transport is the main factor, while capillary-fingering driven transport predominates at 40 degrees Celsius.
JOURNAL OF POWER SOURCES
(2021)
Article
Thermodynamics
Mustafa Ercelik, Mohammed S. Ismail, Derek B. Ingham, Kevin J. Hughes, Lin Ma, Mohamed Pourkashanian
Summary: Nickel foams are excellent candidate materials for gas diffusion layers in polymer electrolyte fuel cells due to their superior structural and transport properties. A computational framework has been developed to estimate these properties and investigate their uniformity and isotropy.
Article
Thermodynamics
Isaac Chukwuemezu Okereke, Mohammed S. Ismail, Derek Ingham, Kevin J. Hughes, Lin Ma, Mohamed Pourkashanian
Summary: This paper investigates the impact of gas diffusion layer (GDL) anisotropic transport properties on the overall and local performance of polymer electrolyte fuel cells (PEFCs). The results show that the GDL's electrical conductivity, diffusivity, and thermal conductivity have a significant influence on the fuel cell performance and the distribution of current density and oxygen concentration within the cathode GDL, while the gas permeability has almost no effect. This study provides valuable insights in improving the efficiency of fuel cells.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Chemistry, Physical
Hyunsoo Chun, Do-Hyung Kim, Hyeon-Seung Jung, Jaebong Sim, Chanho Pak
Summary: The role of gas-diffusion layer (GDL) in high-temperature polymer electrolyte fuel cell (HT-PEMFC) is different from that in low-temperature PEMFC due to operating conditions and environment. This study analyzed the structural parameters and characteristics of four commercial GDLs in the HT-PEMFC cathode using various methods. It was found that the porosity of GDL, influenced by the crack region of the MPL, had a greater impact on gas transmission than its thickness. The correlation between HT-PEMFC cathode performance and GDL porosity and theoretical gas transmission properties was established.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Angel Encalada-Davila, Mayken Espinoza-Andaluz, Julio Barzola-Monteses, Shian Li, Martin Andersson
Summary: A polymer electrolyte fuel cell (PEFC) is an electrochemical device that converts chemical energy into electrical energy and heat, with its efficiency impacted by complex media like GDL. In this study, analysis of transport phenomena through digitally created GDLs and proposed correlations for predicting transport properties were conducted. Modeling of digitally created GDLs and transport phenomena using Open Pore Network Modeling (OpenPNM) library showed a good fit with obtained data.
Article
Chemistry, Physical
Minsoo Kang, Jaebong Sim, Kyoungdoug Min
Summary: Performance degradation caused by mechanical effects is a significant durability issue for polymer electrolyte membrane fuel cells (PEMFCs). This study quantitatively analyzes the contribution of mechanical degradation to the gas diffusion layer (GDL) and catalyst-coated membrane (CCM) under different operating conditions using the freeze-thaw accelerated stress test (AST). The results indicate that under normal conditions, the CCM experiences greater degradation compared to the GDL due to increased oxygen transport resistance and low water saturation point. Under subzero conditions, the oxygen transfer coefficient has a dominant effect on heat generation during cold start.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Peng Wang, Hironori Nakajima, Tatsumi Kitahara
Summary: This study evaluated a double microporous layer coated gas diffusion layer to improve the performance of polymer electrolyte fuel cells under high current and humidity conditions. The results showed that the double MPL with an appropriate hydrophilic layer containing 5% Nafion, 25% TiO2 and carbon black enhanced the ability of the gas diffusion layer to discharge water at the catalyst layer, effectively reducing water flooding.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Seung-Hun Lee, Jin Hyun Nam, Charn-Jung Kim, Hyung Min Kim
Summary: The lattice Boltzmann method was used to simulate the three-dimensional intrusion process of liquid water in the gas diffusion layer of a polymer electrolyte membrane fuel cell in this study. It was found that fiber orientation significantly influences the transport of liquid water in the GDL, and the stochastically reconstructed GDL incorporating fiber orientation better demonstrates the mass transport properties of the GDL.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Green & Sustainable Science & Technology
F. C. Lee, M. S. Ismail, D. B. Ingham, K. J. Hughes, L. Ma, S. M. Lyth, M. Pourkashanian
Summary: This paper reviews new innovations in both macroporous substrate and microporous layer (MPL), covering a diverse range of materials and designs. It assesses the performance improvements of innovative MPL materials and designs, considering pore size distribution and microstructure. The analysis shows that significant performance enhancement can be achieved through employing graduated porosity and/or wettability GDLs. Recommendations for future work are made to improve overall cell efficiency.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
A. Zargar, A. Kodkani, B. Vickers, M. R. Flynn, M. Secanell
Summary: This study proposes a one-dimensional model of a hybrid cooling tower and its atmospheric plume to investigate plume abatement, water consumption, and cooling performance. The model integrates a counter-flow wet cooling tower model, an effectiveness-NTU model for the dry cooling section, and a turbulent plume model. It also includes a draft equation to estimate fan power requirements. The results show that a visible plume can be suppressed by approximately 10%-40% and 80%-90% hybridization in the examined hybrid cooling tower, under ambient air temperatures of 5 degrees C and -20 degrees C respectively. The study highlights the trade-offs between cooling capacity, plume abatement, water consumption, and fan power, and identifies challenging operating conditions for meeting outlet water temperature and plume abatement requirements.
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Physical
Sudip Shyam, Sirshendu Misra, Sushanta K. Mitra
Summary: This study revisits the cantilever approach and demonstrates that contact line depinning is a prerequisite for accurately quantifying adhesion force. The study also establishes the relationship between adhesion force and cantilever acceleration.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Sirshendu Misra, Utsab Banerjee, Sushanta K. Mitra
Summary: Encapsulation protects vulnerable cores and imparts desirable functionalities to the overall cargo. We demonstrate a stable liquid-liquid encapsulation method using a simple impingement process. The method is kinetic energy independent and minimally restrictive.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Mohamad Ghadban, Mayank Sabharwal, Campbell Rea, Xiaolin Li, Angela E. Goode, Maciah Smith, Carmen Murphy, Marc Secanell
Summary: By using realistic digital microstructures of cathodes, it was found that the conductivity of conductive additives has a larger impact on the effective electron conductivity of the electrodes. The morphology of the conductive binder domain also affects the effective conductivity, while nanoporosity within the binder can decrease tortuosity.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
M. Moore, M. Mandal, A. Kosakian, M. Secanell
Summary: In recent years, the mass transport losses in PEMWE cells have gained attention, but the two-phase flow in the ACL has not been extensively studied. This research uses finite element simulations to study two-phase flow in the ACL and finds that the reaction distribution heavily influences gas accumulation within the ACL. High gas saturations are required for an appreciable impact on performance, which is difficult to achieve due to the hydrophilic nature of the anode electrode. Characterization of the ACL microstructure is crucial for understanding PEMWE mass transport limitations.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Utsab Banerjee, Sudip Shyam, Sushanta K. Mitra
Summary: A magnet-assisted approach is introduced to control the impact dynamics of water droplets, by modifying the distribution of magnetic nanoparticles and altering the impact Weber number and magnetic Bond number. The study reveals the role of various forces on the consequential effects of droplet impact and demonstrates potential applications in chemical engineering, material synthesis, and 3D printing.
Article
Chemistry, Multidisciplinary
Madhu Ranjan Gunjan, Utsab Banerjee, Sirshendu Misra, Sushanta K. Mitra
Summary: An impact-based encapsulation technique is used to create stable ferrofluid-wrapped single-liquid and compound droplets in a water bath. A permanent magnet is then employed to manipulate the encapsulated cargo, demonstrating its feasibility for various applications, including underwater magnet-assisted drop translation and coalescence of compound droplets. The release of the innermost cargo in the compound droplet is also experimentally demonstrated via magnetic actuation. This non-contact manipulation technique has significant implications for magnet-assisted actuation technologies.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Multidisciplinary Sciences
James Tatum, Ambuj Punia, Larry Kostiuk, Marc Secanell, Jason Olfert
Summary: Methane pyrolysis is a process that produces hydrogen gas and carbon black without generating carbon dioxide. The study investigated the effects of temperature and reaction time on hydrogen molar concentration. The results showed that the hydrogen concentration increased with higher temperature and longer reaction time.
Article
Nanoscience & Nanotechnology
Michael Moore, Manas Mandal, Aslan Kosakian, Marc Secanell
Summary: The hydrogen pump technique is effective in measuring the effective protonic conductivity of intermediate layers (ILs) in proton exchange membrane fuel cells and electrolyzers. The technique can only be used for ILs that are inactive during the hydrogen reaction, as proton transport through the ionomer can be bypassed by transferring the charge to the electronic phase. This study uses numerical modeling and experimental testing to investigate the impact of IL hydrogen reaction activity, thickness, and electronic conductivity on the prediction of IL protonic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Sirshendu Misra, Mizuki Tenjimbayashi, Wei Weng, Sushanta K. Mitra, Masanobu Naito
Summary: Lubricant-impregnated surfaces (LIS) are efficient liquid-repellent surfaces, but their lubricant layer is susceptible to depletion upon exposure to degrading stimuli. This limits the long-term stability and scalability of LIS. In this work, we developed Lubricated Bicontinuous porous Composites (LuBiCs) by infusing a silicone oil lubricant into a bicontinuous porous composite matrix. LuBiCs can replenish the lubricant via capillary action, allowing them to retain liquid-repellent function even after exposure to degrading stimuli. The large-scale LuBiC roof demonstrated slippery behavior after more than 9 months of outdoor exposure.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Himanshi Dhawan, Xuehai Tan, Jing Shen, James Woodford, Marc Secanell, Natalia Semagina
Summary: The use of ZrO2 as a support material for IrOx-based catalysts in oxygen evolution reaction (OER) electrocatalysis was studied. The supported IrxZr(1-x)O2 on ZrO2 exhibited high OER activity due to alloy formation, nanoparticle network, and the presence of species.
Article
Engineering, Environmental
A. Punia, J. Tatum, L. Kostiuk, J. Olfert, M. Secanell
Summary: In this study, methane thermal decomposition experiments were conducted at high temperature and pressure, and numerical predictions from existing reaction mechanisms were compared. It was found that elevated pressure resulted in higher methane conversion compared to sub-atmospheric conditions. Reaction path analysis showed that the delay in hydrogen formation at high pressure was caused by several specific reactions. The experimental data obtained can be used to develop a methane pyrolysis reaction mechanism suitable for high pressure conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Fei Wei, Aslan Kosakian, Marc Secanell
Summary: Accurate measurement of water transport in an operating PEMFC is crucial for understanding cell performance. A water balance setup has been developed to track real-time water transport and accumulation in PEMFCs, which indicates that operating conditions and transport layer configurations have a significant impact on water transport. Adding a micro-porous layer to the cathode gas diffusion layer increases water back-diffusion, leading to improved performance at certain operating conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
L. Padilla Urbina, J. Liu, N. Semagina, M. Secanell
Summary: Inkjet printing is a feasible technique for the fabrication of electrode in unitized regenerative fuel cells (URFCs) and the study of optimal ionomer and catalyst loading. A physical mixture of Pt, IrOx, and Nafion ionomer was directly inkjet printed on a Nafion membrane to create bifunctional oxygen electrodes with varying loading for a URFC. The results show that the optimal electrode requires low ionomer loading and significantly less IrOx catalyst than platinum.
JOURNAL OF POWER SOURCES
(2023)
Review
Biochemical Research Methods
Soumyadeep Saha, Manoj Sachdev, Sushanta K. Mitra
Summary: Gliomas are primary brain tumors with poor prognosis and high mortality rate. Current diagnostic and monitoring options mainly rely on imaging techniques, which have limitations in providing comprehensive information. Liquid biopsy is a promising alternative for monitoring glioma. Biosensor-based diagnostic and monitoring technology has advantages such as high sensitivity and specificity, high-throughput analysis, and minimally invasive nature. In this review, the authors focused on glioma and summarized the diagnostic and prognostic biomarkers associated with glioma. The review also discussed biosensor approaches for detecting glioma biomarkers and suggested future research directions to improve the integration of biosensors with microfluidic systems for clinical applications.
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)
