Article
Environmental Sciences
Yegeng Sun, Wei Zhang, Qing Wang, Ning Han, Avelino Nunez-Delgado, Yue Cao, Weimeng Si, Fagang Wang, Shaomin Liu
Summary: A mesoporous carbon derived from beancurd was used as a support for Au@Pd@Pt core-shell catalysts, showing higher ORR activity, specific, and mass activities compared to commercial Pt/C catalyst. The sample exhibited excellent durability after 20000 cycles of rapid testing, indicating promising potential for environmental applications.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Physical
Chunyu Zhang, Guozhu Liu, Bo Ning, Shuairen Qian, Danning Zheng, Li Wang
Summary: By tuning the composition of nitrogen and oxygen functional groups in carbon materials, the performance of catalysts can be improved. The synthesized catalyst NOC-6M exhibited high selectivity and production rate of hydrogen peroxide.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Xinfu He, Liaobo Chang, Hongju Wu, Guoyang Liu, Yating Zhang, Anning Zhou
Summary: The low conductivity and porosity of ZIF-67-based catalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are addressed in this research. A highly active bifunctional catalyst, F-N/FeCoNC900, with a three-dimensional interconnected porous structure and high electrical conductivity, was successfully prepared by co-doping Fe, F, and N on the precursor ZIF-67. F-N/FeCoNC900 exhibits superior ORR and OER performance compared to commercially available Pt/C catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Physical
Marco Mazzucato, Christian Durante
Summary: This article discusses the key reaction mechanism and catalyst customization in hydrogen peroxide synthesis, with a particular focus on the 2e-ORR reaction. The article highlights different strategies to improve catalyst activity and selectivity, and explores challenges in ink and electrode preparation.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Hyunsu Han, Juhwan Im, Myungsuk Lee, Daehyun Choo
Summary: In this study, highly efficient diatomic electrocatalysts with Ni and Mn single-atom pair sites were synthesized on N-doped porous carbon framework for CO2 conversion. The resulting catalysts exhibited a high Faradaic efficiency and industrially relevant current density. The experimental measurements and theoretical calculations revealed that the synergistic electronic modification effect of neighboring Ni and Mn single atoms played a favorable role in the reaction steps of CO2 conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Xueying Cao, Yadong Tian, Jizhen Ma, Weijian Guo, Wenwen Cai, Jintao Zhang
Summary: This study demonstrates the exceptional electrocatalytic performance of single-atom alloys (SAAs) for carbon dioxide (CO2) reduction. By confining vanadium/molybdenum/tungsten atoms on bismuth nanosheets, SAAs with rich grain boundaries are created. The strong p-d orbital hybridization between bismuth and vanadium enables nearly 100% Faradaic efficiency for C1 products in a wide potential range, as well as long-term stability. The electron delocalization toward vanadium atoms via p-d orbital hybridization activates bismuth active centers for efficient CO2 activation and reduces energy barriers for formate production. By employing the SAA electrocatalyst, 90.5% yield of 2,5-furandicarboxylic acid is achieved in a solar-driven electrolytic cell for CO2 reduction and 5-hydroxymethylfurfural oxidation. This study provides a feasible strategy for the rational design of advanced SAA electrocatalysts based on the principles of p-d orbital hybridization.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Oscar R. Andrade, Veronica Rodriguez, Rafael Camarillo, Fabiola Martinez, Carlos Jimenez, Jesusa Rincon
Summary: The effect of carbon support on the activity and selectivity of N-doped TiO2 nanoparticles was analyzed in this study. The results showed that the photocatalytic performance of the prepared catalysts was enhanced due to the synergistic effect of N doping and carbon support.
Article
Chemistry, Multidisciplinary
Wei-Hang Xie, Xiangyang Yao, Heng Li, Hong-Ru Li, Liang-Nian He
Summary: A biomass-based nitrogen-rich porous carbon material was prepared from soybean dregs waste and exhibited high CO2 adsorption capacity. The nitrogen content reached up to 4%, with different forms of nitrogen-containing groups in the carbon skeleton. The captured CO2 was activated and converted into valuable chemicals in mild conditions, demonstrating the efficient utilization of both solid waste and CO2.
Article
Chemistry, Multidisciplinary
Lei Lv, Ruihu Lu, Jiexin Zhu, Ruohan Yu, Wei Zhang, Enhui Cui, Xingbao Chen, Yuhang Dai, Lianmeng Cui, Jiong Li, Liang Zhou, Wei Chen, Ziyun Wang, Liqiang Mai
Summary: In this study, a catalyst with excellent selectivity for electrocatalytic CO2 reduction reaction (ECO2RR) and inhibition of competing hydrogen evolution reaction (HER) has been developed by coordinating the edge defects of bismuth (Bi) with sulfur. The catalyst exhibits high product selectivity, with a HCOO- Faraday efficiency of approximately 95% and an HCOO- partial current of approximately 250 mA cm(-2) under alkaline electrolytes. Density function theory calculations reveal the mechanism behind the improved selectivity and provide guidance for the design of advanced ECO2RR catalysts based on bismuth.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Physical
Christian Durante
Summary: The interaction between metal and carbon plays a crucial role in tuning the electrocatalytic behavior of the metal active phase, leading to improved particle size, dispersion, reactivity, and stability. Measurement and monitoring methods for metal-carbon interaction are discussed.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Can Huang, Jiahao Liu, Hai-Hua Huang, Xianfang Xu, Zhuofeng Ke
Summary: Electronic tuning by para substitutions can enhance the activity of manganese N-heterocyclic carbene catalysts for CO2 reduction. Electron-donating groups improve the catalytic activity, while electron-withdrawing groups inhibit the activity.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Shilong Fu, Ming Li, Simone Asperti, Wiebren de Jong, Ruud Kortlever
Summary: In this study, a series of bagasse-derived N-doped carbon catalysts were synthesized with the assistance of different activators to understand the relationship between activators, physicochemical properties, and electrocatalytic performance for the CO2RR. The properties of N-doped carbon catalysts, such as N-doping content, microstructure, and degree of graphitization, were found to be highly dependent on the type of activator used. Furthermore, the overall CO2RR performance of the synthesized electrocatalysts was determined by the overall surface chemistry, where the porosity and the degree of graphitization played significant roles.
Article
Chemistry, Multidisciplinary
Song Lu, Yang Zhang, Mohamed F. Mady, Obinna Egwu Eleri, Wakshum Mekonnen Tucho, Michal Mazur, Ang Li, Fengliu Lou, Minfen Gu, Zhixin Yu
Summary: In this research, a sulfur-doped Ni-N-C catalyst was successfully synthesized through a facile ion-adsorption and pyrolysis treatment. This catalyst showed higher activity and selectivity in electrochemical CO2 reduction (ECR) to CO, along with excellent stability. The synergetic effect between sulfur and Ni-N-X moieties was identified as the key factor contributing to the high activity and selectivity.
Article
Chemistry, Multidisciplinary
Hugh Warkentin, Colin P. O'Brien, Sarah Holowka, Benjamin Maxwell, Mariam Awara, Mark Bouman, Ali Shayesteh Zeraati, Rachael Nicholas, Alexander H. Ip, Essam S. Elsahwi, Christine M. Gabardo, David Sinton
Summary: The stability of CO2RR electrolyzers remains a challenge. This study demonstrates the continuous monitoring of electrolyzers using real-time electrochemical impedance spectroscopy (EIS) analysis, identifying common failure modes and proposing a framework for predicting and preventing failures.
Article
Engineering, Environmental
Fangqi Yang, Haoming Yu, Xinyu Mao, Qiangguo Meng, Shixia Chen, Qiang Deng, Zheling Zeng, Jun Wang, Shuguang Deng
Summary: A ternary heteroatoms (N, S, P)-doped carbon electrocatalyst was reported, which can enhance electrochemical activity by modulating electronic properties and providing abundant active sites and charge-carrier concentrations. The catalyst showed high Faradaic efficiency and stability in experiments, with promising potential for industrial application.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Heecheon Lee, Chaeyeong Seo, Minyong Lee, Jae W. Lee
Summary: A new graphical method based on pinch analysis is demonstrated for the design of pressure-swing distillation (PSD) and heat integration, showing the feasibility through visualization of feed data and temperature contours. The study reveals that different pinch pressures can be achieved in HIPSD system depending on column sequence or pure components separation order, and energy-efficient HIPSD can be achieved by considering pinch constraints.
Review
Engineering, Environmental
Jae Hyun Park, Jeongwoo Yang, Dohyeun Kim, Hyeonseo Gim, Won Yeong Choi, Jae W. Lee
Summary: Since the Industrial Revolution, greenhouse gas emissions have been continuously increasing with the widespread use of fossil fuels. In order to mitigate carbon dioxide emissions, various scientific technologies, including CCUS technology, have been developed. Conversion of carbon dioxide into carbon materials is a current hot research topic.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Sung Joon Park, Seung Hee Kang, Hyung-Ki Min, Myung-gi Seo, Sungjoon Kweon, Min Bum Park, Young Heon Choi, Jae W. Lee
Summary: A series of WOx/Al2O3 catalysts with different tungsten contents were prepared and characterized. The results showed that the catalyst with 6.25 wt% tungsten had the highest acidity and exhibited the best catalytic performance in the pyrolysis of HDPE to liquid oil.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Hyun Suk Lim, Minkyu Kim, Yikyeom Kim, Hyeon Seok Kim, Dohyung Kang, Minbeom Lee, Ayeong Jo, Jae W. Lee
Summary: This study investigates a core-shell structured Co3O4@LaCoO3 redox catalyst for hydrogen production through chemical looping water splitting. The catalyst improves H2O splitting efficiency by lowering the kinetic barrier and increasing the exothermicity, and enhances H-2 production activity by covering the Co3O4 nanoparticle surface. The core-shell structure prevents aggregation of Co3O4 nanoparticles and leads to superior and sustainable H-2 productivity compared to using only Co3O4 or LaCoO3.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Engineering, Environmental
Ayeong Byeon, Won Chan Yun, Jong Min Kim, Jae W. Lee
Summary: This review focuses on the application of metal-free heteroatom-doped carbon catalysts in the electrochemical synthesis of hydrogen peroxide through the two-electron oxygen reduction reaction (2e(-) ORR). The electronic properties of carbon can be changed depending on the type of heteroatoms, which significantly affect the ORR catalytic activity. The location of active catalytic sites within the carbon network and the reaction environment, such as pH and electrolyte additives, are also investigated. This review provides fundamental insights into how heteroatoms enhance the electrocatalytic activity of metal-free carbon materials for the 2e(-) ORR.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jeongwoo Yang, Dong Woo Kang, Hodong Kim, Byunghoon Hwang, Jae W. Lee
Summary: The use of a free-standing carbon interlayer in lithium-sulfur batteries shows promise due to its ability to suppress the shuttle effect and provide flexibility. However, the thickness of the interlayer inhibits Li-ion transport. This study addresses this issue by synthesizing a composite with superior pore characteristics and evenly distributed catalytic sites, resulting in improved Li-ion diffusion and redox reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Byunghoon Hwang, Jeongwoo Yang, Dohyeun Kim, Won Chan Yun, Jae W. Lee
Summary: We designed a membraneless potassium bromide electrochemical capacitor (ML-PBEC) single cell that generates high energy density and reduces self-discharge. Highly porous carbon with a hierarchical structure was synthesized from CO2 gas, and the effect of nitrogen doping on the CO2-derived carbon materials' electrochemical performance was investigated. The ML-PBEC single cell, using the synthesized carbon as electrodes and a Br-/Br3- redox active aqueous electrolyte, achieved enhanced energy density by suppressing the cross-diffusion of soluble bromine molecules through electrostatic interaction between N-doped sites' protons and polybromide anions even without a membrane.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Jeil Park, Wonhyeong Lee, Jae W. W. Lee
Summary: This study explored the impact of dual impeller geometry on droplet size in the S-PVC polymerization process. A borescope method was used to measure droplet size in a biphasic liquid system, and it was found that replacing the upper paddle impeller with a 20-degree pitched paddle increased the Sauter mean diameter by 46.5%. The Sauter mean diameter also increased with larger impeller diameter and blade width. A revised geometrical factor (F) was considered, and a calculated maximum energy dissipation rate was used to establish a correlation for the Sauter mean diameter.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Dasol Bae, Yikyeom Kim, Eun Hee Ko, Seung Ju Han, Jae W. Lee, Minkyu Kim, Dohyung Kang
Summary: This study investigated the reaction kinetics and mechanism of CH4 pyrolysis in mixtures of molten MnCl2 with various chlorides, and found that MnCl2-KCl mixture showed the lowest apparent activation energy and the highest crystallinity. This suggests that MnCl2-KCl has unique pathways for methane dehydrogenation and carbon formation.
Article
Green & Sustainable Science & Technology
Wonhyeong Lee, Dong Woo Kang, Yun-Ho Ahn, Jae W. Lee
Summary: In this study, a mixture of hydrate seed solution and liquid phase thermodynamic promoter was introduced to promote the formation of hydrogen hydrates for safe hydrogen storage.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Ki Heum Park, Jae W. Lee, Yutaek Seo
Summary: In this study, a VOC recovery process based on selective condensation was developed. By analyzing the economic benefits, the process efficiency was optimized, and a cascade refrigerant system using carbon dioxide and ammonia was proposed to achieve more efficient and eco-friendly operation of the VOC recovery system.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Energy & Fuels
Donggun Kim, Minyong Lee, Yongbeom Shin, Jeongwoo Lee, Jae W. Lee
Summary: This study presents a novel process for the direct production of diethyl carbonate and ethylene glycol from ethylene carbonate and ethanol through reactive distillation. By integrating reactive distillation systems and eliminating the need for separating the azeotrope mixture, an energy-efficient process is achieved. Two design alternatives are proposed, with both resulting in reductions in energy consumption, cost, and CO2 emissions compared to conventional processes. These alternatives demonstrate their economic viability and effectiveness in CO2 mitigation.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Environmental
Yikyeom Kim, Hyeon Seok Kim, Dohyung Kang, Minkyu Kim, Jae W. Lee
Summary: Chemical looping steam methane reforming (CL-SMR) can produce high-purity hydrogen without additional separation units. The reactivity of LaFeO3 oxygen carrier towards methane can be enhanced by introducing a small amount of iridium. Both particle reduction and oxidation were significantly improved by the presence of iridium, and the preparation pathways of oxygen carriers greatly affected the long-term performance. Although surface iridium species prepared by an impregnation method were severely aggregated during successive redox cycling, B-site incorporation of iridium led to the exsolution of IrOx nanoparticles anchored on the perovskite host and enhanced redox stability, which is essential for the long-term operation of the chemical looping process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Electrochemistry
Ayeong Byeon, Won Chan Yun, Jong Min Kim, Jae W. Lee
Summary: Hydrogen peroxide is widely used in various industries for different purposes, such as water purification and rocket fuels. The conventional method of hydrogen peroxide production consumes a lot of energy and generates chemical waste. Therefore, there is a growing interest in the electrochemical production method using non-precious metal catalysts, such as transition metals and heteroatoms, for eco-friendly and low-energy synthesis. This review focuses on the modification of atomic configuration to enhance the catalytic activity of non-precious metal catalysts for the two-electron oxygen reduction reaction (ORR).
Article
Chemistry, Multidisciplinary
Jeil Park, Wonhyeong Lee, Jae W. W. Lee
Summary: This study investigated the impact of dual impeller geometry on droplet size in S-PVC polymerization process and proposed a correlation equation to estimate droplet size with a certain margin of error, aiding in predicting the normality of the polymerization reaction under specific impeller geometry.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(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)
