Article
Chemistry, Physical
Iksung Lim, Eunjik Lee, Hyun-Uk Park, Jeongyun Jang, Namgee Jung, Tae-Hyun Yang, Sung-Dae Yim, Gu-Gon Park
Summary: The development of highly active and durable electrocatalysts is crucial for the commercialization of polymer electrolyte fuel cells (PEFCs). Core-shell nanoparticles, especially ternary Pt-based ones, have shown promising potential in maximizing Pt utilization and catalytic performance for the sluggish oxygen reduction reaction (ORR). Additionally, post-heat treatment under different gas atmospheres can significantly influence the structural characteristics and catalytic activity of the electrocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiafang Ji, Peng Chen, Yuanjun Liu, Zhenyuan Ji, Hongbo Zhou, Caiyao Chen, Xiaoping Shen, Xiaoqi Fu, Guoxing Zhu
Summary: In this study, Ir/Ni-NiO/CNT composite catalysts were designed and prepared. The as-prepared catalyst exhibited excellent catalytic performance in alkaline media, surpassing commercial Pt/C catalysts. Experimental and theoretical calculations showed that the presence of Ni-NiO facilitated the Volmer step for HOR by weakening the hydrogen binding energy on Ir sites.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Electrochemistry
Jing-Fang Huang, Jia-Ruei Sie, Ruo-Hua Zeng
Summary: A novel approach combining Cu-UPD-GAL was used to construct highly jagged Pt nanoclusters, leading to enhanced activity for oxygen reduction reactions. A sequential flow injection procedure allowed for direct modification of commercial MEAs with H-Pt(c)s, improving fuel cell performance.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Wei Shao, Qianqian Pan, Qiaoli Chen, Chongzhi Zhu, Weijian Tao, Haiming Zhu, Huijun Song, Xuelu Liu, Ping-Heng Tan, Guan Sheng, Tulai Sun, Xiaonian Li, Yihan Zhu
Summary: Metallic nanocrystals show potential for applications in plasmon-enhanced photocatalysis and solar energy harvesting, and a cooperative deposition strategy can enhance their activity and efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Alex Ricardo Silva Olaya, Franziska Kuehling, Christoph Mahr, Birthe Zandersons, Andreas Rosenauer, Joerg Weissmueller, Gunther Wittstock
Summary: Nanoporous gold (NPG) with less than 1% residual Ag content was studied as an electrocatalyst for the oxidation of methanol, formaldehyde, and formate. The surface structure and oxidation reaction of NPG can be controlled by adjusting the Ag content and potential. Ag has a significant impact on the onset potential and peak current density of the catalytic reaction.
Article
Chemistry, Physical
Mong-Wen Gu, Hao Howard Peng, I-Wen Peter Chen, Chun-hsien Chen
Summary: Understanding chemical bonding and conductivity at the electrode-molecule interface is crucial for the operation of single-molecule junctions. By applying d-band theory and surface d-band model, it is possible to explain and optimize these devices. Coating Au electrodes with Ag or Cu monolayers can improve the molecule-electrode binding strength and electrical conductivity, attributed to the tuning of the metal's surface d bands.
Article
Electrochemistry
Yang Hu, Jens Oluf Jensen, Patrick Bretzler, Lars Nilausen Cleemann, Jianan Yu, Qingfeng Li
Summary: This work investigated the stability of the Pt/C reference catalyst for the oxygen reduction reaction, establishing a reliable benchmark under controlled conditions and identifying the influence of experimental errors on the test results. The proposed experimental procedure could serve as a general reference for determining the stability of electrocatalysts for different electrochemical systems.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Dong-Rui Yang, Chen Chi, Miao Ni, Yi-Bai Sun, Xing-Hua Xia
Summary: This study proposes a high-performance catalyst for the hydrogen evolution reaction (HER) by decorating a single atomic layer of platinum on gold nanorods. It shows superior catalytic performance with a mass activity 14 times higher than that of commercial catalysts. The use of graphene as a support further enhances the stability and conductivity of the catalyst.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Multidisciplinary Sciences
Xin Wan, Qingtao Liu, Jieyuan Liu, Shiyuan Liu, Xiaofang Liu, Lirong Zheng, Jiaxiang Shang, Ronghai Yu, Jianglan Shui
Summary: This study demonstrates the high activity and stability of an Fe-N-C catalyst for oxygen reduction reaction in acidic fuel cells by introducing nitrogen-coordinated iron clusters and closely surrounding Fe-N-4 active sites. The strong electronic interaction between the iron clusters and the Fe-N-4 sites optimizes the adsorption strength of reaction intermediates and enhances the catalyst's turnover frequency and demetalation resistance.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Eliran Rephael Hamo, Reut Saporta, Brian A. Rosen
Summary: This study focused on the electrodeposition of low-dimensional Pt on transition metal carbide supports for improved durability and cost reduction of PEMFC electrodes. The low-overpotential region achieved a high ORR mass activity of 275 A/g(Pt) and superior stability compared to samples prepared at higher overpotentials.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Wenfang Miao, Feirong Huang, Xiaochen Shen, Shaopeng Li, Xingru Cao, Xuefeng Zhang, Jieyi Yu, Xinglong Dong
Summary: A stable atomically dispersed Fe-Nx-based catalyst with excellent ORR performance and a high half-wave potential was synthesized and the origin of its activity was revealed through density functional theory calculations.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Electrochemistry
A. R. Nallayagari, E. Sgreccia, L. Pasquini, F. Vacandio, S. Kaciulis, M. L. Di Vona, P. Knauth
Summary: B-N, Si-N, and S-N-co-doped carbon quantum dots were synthesized from inexpensive and non-toxic precursors and used as electrocatalysts for the oxygen reduction reaction. The B-N-co-doped samples showed the best electrocatalytic activity with the lowest onset and half-wave potentials, even with a low boron concentration (0.5%). The stability test demonstrated a slight decrease in the diffusion-limited current after 500 cycles. The synthesis of these co-doped carbon quantum dots from non-toxic precursors is an important advantage compared to other carbon-doped electrocatalysts.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Chunshuang Yan, Chade Lv, Bei -Er Jia, Lixiang Zhong, Xun Cao, Xuelin Guo, Hengjie Liu, Wenjie Xu, Daobin Liu, Lan Yang, Jiawei Liu, Huey Hoon Hng, Wei Chen, Li Song, Shuzhou Li, Zheng Liu, Qingyu Yan, Guihua Yu
Summary: This study demonstrates that amorphization is an effective strategy to address critical issues in aqueous aluminum metal batteries (AMBs). By shifting the reduction potential for aluminum deposition, the amorphous aluminum (a-Al) interfacial layer facilitates stable aluminum plating and stripping, while mitigating passivation and enhancing interfacial ion transfer kinetics. The use of a noncorrosive, low-cost, and fluorine-free electrolyte further contributes to the excellent electrochemical performance of the AMBs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Jing Liu, Jie Wang, Jie Gao, Zhongyin Sun, Chaohua Fan, Xuejing Cui, Luhua Jiang
Summary: In this study, a unique carbon material was developed as a catalyst support for fuel cells. The material showed strong anti-corrosion property and high electronic conductivity, exhibiting comparable activity and stability to commercial catalysts. This work provides a facile strategy for synthesizing robust supports for fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Da Chen, Zhaoming Xia, Zhixiong Guo, Wangyan Gou, Junlong Zhao, Xuemei Zhou, Xiaohe Tan, Wenbin Li, Shoujie Zhao, Zhimin Tian, Yongquan Qu
Summary: Inspired by natural metalloenzymes, a biomimetic strategy was developed to synthesize porous Fe-N-3 single atom nanozymes with high catalytic activity. The performance of the nanozymes surpassed that of other nanozymes due to the suppressed aggregation of atomically dispersed Fe, the optimized mesoporous structure through thermal removal of hemoglobin, and the unique electronic configuration of Fe-N-3.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yong Xu, Min Wang, Qi Xie, Yuying Wang, Xuejing Cui, Luhua Jiang
Summary: In this study, a boron-doped ZnxCd1-xS/Cd heterojunction with sulfur vacancies was synthesized via NaBH4 treatment. The optimized catalyst achieved a superior activity towards hydrogen evolution and RhB degradation in dyeing wastewater under visible light, due to the optimized energy band structures and enhanced separation/transfer efficiency of the photogenerated carriers.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Xuejing Cui, Xiaoke Li, Luhua Jiang
Summary: In this study, a unique carbon sponge FeNC@GA-MF with a hierarchical porous structure was prepared by a multi-step self-assembly strategy, exhibiting superior activity for the oxygen reduction reaction and successfully applied in Zn-air batteries. This work provides a beneficial method for fabricating self-supporting electrodes for fuel cells and supercapacitors.
Article
Chemistry, Physical
Yingshuang Xu, Honghao Lv, Huasen Lu, Qinghao Quan, Wenzhen Li, Xuejing Cui, Guangbo Liu, Luhua Jiang
Summary: Direct seawater electrolysis for hydrogen production has potential, but current systems require external power and cannot achieve continuous production. This study demonstrates a self-powered electrolysis system driven by a magnesium/seawater battery for continuous hydrogen production.
Review
Chemistry, Multidisciplinary
Linghui Kong, Min Wang, Luhua Jiang
Summary: This article summarizes recent progress in heteroatom-doped asymmetric M-N-x-C SACs for CO2 reduction, including structure modulation, synthetic strategies, and understanding of ECR mechanisms. The article provides an outlook on the application potential of this type of catalyst in CO2 utilization.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Physical
Rui Wang, Zihan Li, Zhengmin Li, Mengjin Wen, Guixue Wang, Guangwen Xie, Xin Liu, Luhua Jiang
Summary: A highly active electrocatalyst Ni-Fe-P-WO3/NF was synthesized through a simple electroless deposition method on nickel foam, showing superior catalytic performance compared to noble metal catalyst IrO2/NF for the oxygen evolution reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Guangbo Liu, Honghao Lv, Qinghao Quan, Xiaolei Li, Huasen Lu, Wenzhen Li, Xuejing Cui, Luhua Jiang
Summary: This study demonstrates a method for sustainable hydrogen production from seawater using a self-powered electrolysis system. By using magnesium/seawater batteries with a Ni/V2O3 Schottky electrode, facile seawater electrolysis can be achieved at low overpotential, resulting in high hydrogen production rate and energy conversion efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Teng Yang, Honghao Lv, Qinghao Quan, Xiaolei Li, Huasen Lu, Xuejing Cui, Guangbo Liu, Luhua Jiang
Summary: A rational design of rare earth element Er-doped MoO2 (Er-MoO2) with modulated electronic structure is reported, leading to boosted water splitting activity in both alkaline and seawater electrolyte. The optimized Er-MoO2 requires overpotentials of only 94/221 mV and 173/312 mV to deliver the 10 mA cm-2 for HER/OER in alkaline and seawater electrolyte, respectively. Moreover, a Mg/seawater battery coupled with the Er-MoO2 cathode achieves a maximum power density of 8.17 mW cm-2, combining with an excellent discharging stability for at least 24 h.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Jing Liu, Boyang Zhang, Yumeng Fo, Wanqing Yu, Jie Gao, Xuejing Cui, Xin Zhou, Luhua Jiang
Summary: This study reports the synthesis of a nickel-gold nanodimer (Ni100Au1/C-P) via galvanic replacement reaction, which mostly transforms into highly dilute gold-in-nickel host nanoalloys (Ni100Au1/C-EA) via electrochemical activation. The Ni100Au1/C-EA exhibits remarkable activity and stability for the alkaline hydrogen oxidation reaction (HOR).
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Huimin Chen, Min Wang, Kaicai Fan, Linghui Kong, Honghao Lv, Wenzhen Li, Guangbo Liu, Luhua Jiang
Summary: This study presents an efficient aqueous-phase Mg-CO2 battery by designing a highly selective Ni NPs/Ni-N-C SACs catalyst and optimizing the electrolyte. The battery not only generates electricity, but also produces syngas and high-valued MgHPO4 phosphate. The operation parameters can regulate the electricity output, the CO/H2 ratio in syngas, and the yields/crystalline quality of MgHPO4.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Liu Jing, Gao Jie, Wanqing Yu, Huanwei Ren, Xuejing Cui, Xin Chen, Luhua Jiang
Summary: In this study, a highly active and stable electrocatalyst Ru-TiO/TiO2@NC is developed for hydrogen oxidation and evolution reactions. The catalyst exhibits exceptional activity and stability, outperforming the traditional Pt/C catalyst. The unique sandwich structure and optimized interaction between Ru and TiO/TiO2 contribute to the enhanced performance of this Ru-based catalyst.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yan Zhao, Shixu Song, Jing Liu, Xuejing Cui, Luhua Jiang
Summary: In this study, black liquor-derived carbon was functionalized and used as an efficient electrocatalyst for hydrogen peroxide production. The functionalized C3-O3-B10 showed high activity, satisfactory selectivity, and good stability. Mechanism investigations revealed the favorable catalytic properties of C3-O3-B10, making it a reliable and sustainable electrocatalyst for hydrogen peroxide production.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jing Liu, Jie Wang, Linjuan Zhang, Chaohua Fan, Xin Zhou, Bingsen Zhang, Xuejing Cui, Jianqiang Wang, Yi Cheng, Shuhui Sun, Luhua Jiang
Summary: Developing active, stable, and phosphate anion resistant catalysts is crucial for high-temperature proton exchange membrane fuel cells. A five-coordinated iron catalyst with optimized charge redistribution is designed, which weakens phosphate anion adsorption, promotes oxygen molecule dissociation, and exhibits excellent phosphate anion tolerance and ORR activity.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Inorganic & Nuclear
Jie Gao, Zhongyin Sun, Jie Wang, Chaohua Fan, Xuejing Cui, Jing Liu, Luhua Jiang
Summary: In this study, a three-dimensional interconnected graphene enveloped titanium dioxide flower (TiO2@RGO) was fabricated as a robust support for the oxygen reduction reaction (ORR). The TiO2@RGO composite exhibited a large surface area and superior electrical conductivity, providing an efficient electron highway for reactant transport. With the loading of Pt nanoparticles, the Pt-TiO2@RGO catalyst showed comparable catalytic activity and superior stability, suggesting its potential as a robust catalyst support for proton exchange membrane fuel cells (PEMFCs).
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Jiabiao Yan, Jing Zhu, Dawei Chen, Shuai Liu, Xu Zhang, Shoushan Yu, Zhenhua Zeng, Luhua Jiang, Fanglin Du
Summary: This study explores the effect of the electronegativity of A-site atoms on the lattice structure of the active site and the activity-stability of catalysts. It was found that higher electronegativity can enhance the catalytic activity and improve the long-term stability of the catalyst in acidic media.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Zunhang Lv, Kaihang Wang, Yingying Si, Zihan Li, Tianpeng Yu, Xin Liu, Guixue Wang, Guangwen Xie, Luhua Jiang
Summary: By judiciously engineering the electrocatalysts, the researchers successfully designed a Co-P/Ni-Fe-P/NF electrode with excellent electrocatalytic activity for hydrogen evolution reaction in alkaline medium. The electrode exhibited a low overpotential of 43.4 mV at 10 mA cm-2 and demonstrated long-term stability for 72 hours. This innovative work may contribute to further development of commercial electrocatalysts.
GREEN ENERGY & ENVIRONMENT
(2022)
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)