Review
Electrochemistry
Zhiheng Li, Mengran Li, Zhonghua Zhu
Summary: Acceleration of the oxygen reduction reaction at the cathode is crucial for low-temperature solid oxide fuel cells. Understanding the interactions between surface and bulk of the cathode materials is important for electrode kinetics and overall efficacy. Future research directions include investigating the role of oxygen vacancy, rational modulation of surface-bulk interactions, and the use of advanced fabrication techniques.
ELECTROCHEMICAL ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Daniel Sikstrom, Aroosa Javed, Shoaib Muhammad, Venkataraman Thangadurai
Summary: Perovskite-type Nd0.75Ba0.25Co0.8Fe0.2O3-delta (NBCF25) was synthesized via solid-state method and showed a single-phase orthorhombic structure. It exhibited minor reactivity with Sr and Mg-doped LSGM when sintered at 1050 degrees C. The sintered sample pellets showed a maximum conductivity of 674 S/cm at 700 degrees C. AC electrochemical impedance spectroscopy measurements on LSGM pellets revealed that NBCF25 has the lowest area-specific resistance of 0.07 omega cm(2) at 800 degrees C in air. Impedance spectroscopy genetic programming was used to understand the oxygen reduction reaction.
Article
Chemistry, Applied
Bayu Admasu Beshiwork, Xinyu Wan, Min Xu, Haoran Guo, Birkneh Sirak Teketel, Yu Chen, Jun Song Chen, Tingshuai Li, Enrico Traversa
Summary: In intermediate-temperature solid oxide fuel cells, doping with Nb and Ta in the cathode material improves electron transfer and enhances the electrochemical performance. The co-doping of Nb/Ta in SrFeO3 increases the balanced concentration of oxygen vacancies, leading to a low cathode polarization resistance and outstanding peak power density. The button cell also shows durability under high temperature and wet H2 fuel.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Nanoscience & Nanotechnology
Zhongqiu Li, Bo Guan, Fang Xia, Jiuyuan Nie, Wenyuan Li, Liang Ma, Wei Li, Lingfeng Zhou, Yi Wang, Hanchen Tian, Jian Luo, Yan Chen, Matthew Frost, Ke An, Xingbo Liu
Summary: A new series of HEPs are investigated as cathode materials for SOFCs, achieving both chromium tolerance and high performance. The A-site elements have a significant influence on overall performance, and using the three most active elements simultaneously leads to the best candidate. Excellent Cr tolerance has been observed, with degradation of only 0.25%/kh during operation.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Junmeng Jing, Ze Lei, Ziho Wu, Zhongxu Wang, Haorui Yu, Zhibin Yang, Suping Peng
Summary: This study investigates the oxygen vacancy engineering on cobalt-free Ba0.95La0.05FeO3-delta (BLF) by nickel substitution, which promotes the generation of oxygen vacancies and enhances catalytic activity, leading to improved electrochemical performance of proton-conducting solid oxide fuel cells (H+-SOFCs).
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Applied
Feifei Dong, Zhenghui Gao, Bingkai Zhang, Lu Li, Ziqi Kong, Zilin Ma, Meng Ni, Zhan Lin
Summary: A novel cobalt-free perovskite oxide, Ba0.75Sr0.25Fe0.875Ga0.125O3-delta (BSFG), has been developed as an efficient oxygen reduction electrode for solid oxide fuel cells (SOFCs), demonstrating exceptional electrochemical performance at 600 degrees C. The stable crystalline structure and favorable thermal expansion behavior contribute to the short-term performance stability of the cathode.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Binze Zhang, Shaowei Zhang, Hairui Han, Kaibin Tang, Changrong Xia
Summary: The partial replacement of iron element with gallium in PrBaFe2O5+delta can improve its electrochemical performance as a cathode material for intermediate-temperature solid oxide fuel cells. Specifically, PrBaFe1.9Ga0.1O5+delta exhibits improved physicochemical properties and electrochemical properties, such as an increased oxygen surface exchange coefficient (kchem) and enhanced oxygen dissociation process. Moreover, the anode-supported single cell with PBFG0.1 cathode shows a higher peak power density and good stability in long-term operation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ziling Wang, Caichen Yang, Jian Pu, Yunfeng Tian, Jian Wang, Francesco Ciucci, Bo Chi
Summary: Morphology regulation is an effective way to improve the electrocatalytic activity of SOFC cathodes, and nanofibers have been confirmed to have advantages in this aspect. This study employed a sintering-free method to in-situ self-assemble LCaFN nanofibers onto the YSZ electrolyte surface, which showed impressive performance compared to previous work. These findings demonstrate the promising strategy of combining fiber cathodes and in-situ self-assembly techniques for high-performance SOFCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Huiying Qi, Baofeng Tu, Mojie Cheng, Tonghuan Zhang
Summary: The study developed a highly active perovskite nanocomposite for intermediate-temperature solid oxide fuel cells, which showed superior performance through nano-scale assembly and active surface oxygen species, enhancing oxygen catalysis.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Xinghong Zhou, Yi Lu, Weimin Yang, Haibo Hu, Jun Li, Xiaoyu Wang, Suxian Guo, Xifeng Ding
Summary: A novel nanoparticles-decorated cathode comprised of K+-doped BaCo0.7Fe0.2Y0.1O3-delta matrix oxide and the mixed BaCoO3-delta nanoparticles through water-mediated exsolution process showed high activity and stability upon exposure to steam. The improved performance was attributed to the enlarged triple phase boundary and increased oxygen vacancy concentration. The cathode also benefitted from the hydration behavior of K+ dopant and the stability provided by the socketed nanoparticles.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Chengzhi Sun, Yu Kong, Yongchao Niu, Xiaoju Yin, Naiqing Zhang
Summary: As a classical family of high-performance cathode materials, mixed ionic and electronic conductor (MIEC) is crucial for the low-temperature operation and high efficiency of solid oxide fuel cells. While Fe-based double perovskites have advantages of low cost, good thermal compatibility with the electrolyte, and high-temperature stability, their electrochemical properties for oxygen reduction reaction are unsatisfactory. This study demonstrates that substituting Zr for Fe in NdBaFe2O6??Δ (NBF) lattice can enhance oxygen vacancy concentration and the position of O p-band center, leading to improved oxygen reduction performance for the Zr-doped NBF cathode.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Ben Ma, Zhaohui Chen, Zhuang Lin, Lin Cheng, Yingke Zhou
Summary: This study investigates the effects of Mg doping on the performance of Mn-Cr spinel oxide cathodes in solid oxide fuel cells (SOFCs). Both experimental results and density functional theory (DFT) calculations show that Mg doping can optimize the electronic structure of the spinel oxide, increase the oxygen vacancy concentration, and improve the electrical conductivity and catalytic activity. The Mg-doped Mn-Cr spinel oxide cathode exhibits superior performance with high area-specific polarization resistance and maximum power density.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Xiaona Zhang, Tian Xia, Qiang Li, Liping Sun, Lihua Huo, Hui Zhao
Summary: The highly active and CO2-tolerant Pr0.94Ba0.7Ca0.3CO2O5+delta (P0.94Ba0.3C) cathode has shown low polarization resistance and excellent long-term stability for solid oxide fuel cells operating below 700 degrees C. Its CO2 tolerance has also been demonstrated, making it a promising candidate for SOFCs operating at lower temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Miaomiao Guo, Tian Xia, Qiang Li, Liping Sun, Hui Zhao
Summary: The study developed cobalt-free perovskite oxides BSFVx as efficient cathode electrocatalysts for SOFCs, with V doping improving thermal stability and CO2 tolerance. Among them, the BSFV0.05 cathode showed excellent oxygen reduction reaction activity and peak power density.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Haibo Hu, Yi Lu, Xinghong Zhou, Jun Li, Xiaoyu Wang, Xifeng Ding
Summary: A La/Nb co-doped perovskite has been developed as a promising cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs), exhibiting excellent ORR activity and CO2 tolerance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Chang Guo, Yu Shen, Peng Mao, Kaiming Liao, Mingjie Du, Ran Ran, Wei Zhou, Zongping Shao
Summary: This study reports a new surface chemistry that converts the undesired Li2CO3 contaminant into an ultra-thin lithium polyphosphate (Li-PPA) layer to address issues in garnet-based solid-state Li-metal batteries (GSSBs). The Li-PPA layer facilitates the spreading of molten Li and acts as an electron-blocking shield to suppress Li dendrite formation. The GSSBs with LiFePO4 demonstrate high capacity and good cyclability, suggesting the feasibility of this interfacial engineering strategy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Engineering, Environmental
Jie Yu, Zheng Li, Tong Liu, Siyuan Zhao, Daqin Guan, Daifen Chen, Zongping Shao, Meng Ni
Summary: This article summarizes recent efforts and progress in regulating the electronic and morphological structures of CoxAy (A = P, S, Se)-based materials for the optimization of their catalytic performance. Methods such as phase control, defect engineering, nanostructure construction, heteroatom doping, and composite engineering are introduced to optimize the electronic configurations, increase active sites, and enhance the conductivity, etc. Furthermore, the underlying activity-structure relationships behind the boosted catalytic behavior of these materials are discussed in detail. Lastly, a perspective on the future exploration of CoxAy (A = P, S, Se)-based electrocatalysts is presented. This review provides valuable insights into the investigation of emerging materials in energy chemistry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Chencheng Cao, Yijun Zhong, Zongping Shao
Summary: Despite being widely used, the safety issue of lithium-ion batteries (LIBs) is a major barrier for their application in EVs or large-scale energy storage. This study summarizes the mechanisms of thermal runaway and recent progress in electrolyte engineering for LIBs, including adding flame-retardants, using ionic liquid electrolytes, and solid electrolytes. It also discusses the strengths, weaknesses, and new directions for designing safer electrolytes.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Chuan Zhou, Dongliang Liu, Meijuan Fei, Xixi Wang, Ran Ran, Meigui Xu, Wei Wang, Wei Zhou, Ryan O'Hayre, Zongping Shao
Summary: In this study, the balance between hydration reaction and oxygen reduction reaction (ORR) over protonic ceramic fuel cells (PCFCs) cathode is optimized by controlling the air flow rate. Different cathode materials show different optimal performance under various operating conditions. The study provides important insights into the environmental demands of PCFC cathodes during operation and offers useful guidance for further performance optimization.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Environmental
Yuan Zhang, Junbiao Li, Heping Xie, Zhipeng Liu, Suling Shen, Ying Teng, Daqin Guan, Shuo Zhai, Yufei Song, Wei Zhou, Bin Chen, Meng Ni, Zongping Shao
Summary: By utilizing a CO2-induced reconstruction strategy, a BaCO3 shell with both oxygen incorporative and robust properties was successfully built on a self-assembled composite cathode made of BaFeO3-delta perovskite. The resulting cathode exhibited enhanced ORR activity, durability, and thermomechanical compatibility.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Xiaoyu Wang, Meijuan Fei, Chuan Zhou, Wenhuai Li, Xixi Wang, Xuanxuan Shen, Dongliang Liu, Wanqing Chen, Peng Chen, Guancong Jiang, Ran Ran, Wei Zhou
Summary: Despite the low proton conductivity of most cathode materials in proton ceramic fuel cells (PCFCs), a composite cathode material consisting of La5.5W0.45-Mo0.4Nb0.15O11.25-delta (LWMN) and Sr2Sc0.1Nb0.1Co1.5Fe0.3O6-delta (SSNCF) was developed to enhance proton diffusion and weaken CO2 adsorption. The symmetrical cell based on the 3 wt% LWMN-SSNCF cathode achieved a lower linear degradation rate of ASRs compared to the single-phase SSNCF cathode. Furthermore, the PCFC with the composite cathode exhibited improved performance due to its superior proton conduction.
COMPOSITES PART B-ENGINEERING
(2023)
Review
Energy & Fuels
Hai Wang, Jingsheng He, Huimin Xiang, Ran Ran, Wei Zhou, Wei Wang, Zongping Shao
Summary: Mixed Pb-Sn narrow-band-gap perovskite solar cells have attracted attention due to their low cost, high power conversion efficiency, and potential as a replacement for commercial silicon-based solar cells. However, these cells suffer from low efficiency, poor stability, and high Voc loss. Additive engineering strategies, such as stabilizing Sn2+ cations and controlling film properties, have been proposed to improve the efficiency and stability of these cells.
Article
Chemistry, Physical
Bin Hu, Yongqing Yang, Wei Cao, Xixi Wang, Chuan Zhou, Yiyang Mao, Lei Ge, Ran Ran, Wei Zhou
Summary: This study presents a new, mass-producible catalyst for the oxygen reduction reaction (ORR), composed of low-loading (10 wt%) Pt nanoparticles bound to patchy nitrogen-doped carbon (PNC) with uniformly dispersed FeN4 sites (Pt/FeN4-PNC). The derived catalyst exhibits significantly improved catalytic activity and stability, with a promising mass activity (MA) of 0.94 A mgpt-1 and negligible decay after 30,000 cycles. In fuel-cell assessment, Pt/FeN4-PNC and Pt/FeN4-PNC-10 g achieved peak power densities of 1.13 W cm-2 and 1.14 W cm-2, respectively, and retained 88.5% and 88.1% of the initial values after 30,000 voltage cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Physical
Nikolai A. Danilov, Inna A. Starostina, George N. Starostin, Anna V. Kasyanova, Dmitry A. Medvedev, Zongping Shao
Summary: Proton-conducting oxide materials have protonic defects in their crystal structure due to their interaction with hydrogen-containing atmospheres, resulting in superior ionic conductivity. Barium cerate, barium zirconate, and barium cerate-zirconate are widely studied as proton-conducting electrolyte materials. Y and Yb co-doped Ba(Ce,Zr)O-3 is considered one of the most promising systems.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenyun Zhu, Jiani Chen, Dongliang Liu, Guangming Yang, Wei Zhou, Ran Ran, Jie Yu, Zongping Shao
Summary: The catalytic performance of a series of Ruddlesden-Popper-structured perovskite oxides for the oxygen evolution reaction (OER) was investigated. It was found that PrSr3Fe1.5Co1.5O10-δ exhibited the best OER performance with the smallest overpotential and lowest Tafel slope. Adjusting the A-site elements can improve the activity of the OER.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Yu Li, Gao Chen, Hsiao-Chien Chen, Yanping Zhu, Liangshuang Fei, Longwei Xu, Tiancheng Liu, Jie Dai, Haitao Huang, Wei Zhou, Zongping Shao
Summary: Although the bulk properties of catalytic materials can be easily regulated by doping, their surface where electrocatalysis occurs is often hard to be controlled. In this work, a surface tailoring strategy is proposed to finely manipulate the surface cation configuration of a Ruddlesden-Popper perovskite La2NiO4. By removing surface-enriched inactive La element and forming active Ni-Fe pairs, the surface tailored catalyst exhibits exceptional water oxidation performance. The study demonstrates that a dynamically reconstructed thin-layer surface with an equal amount of Ni and Fe elements, combined with a steady La-terminated subsurface, is the key to achieving high OER activity and durability.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Yakun Wang, Yeqing Ling, Bin Wang, Guowei Zhai, Guangming Yang, Zongping Shao, Rui Xiao, Tao Li
Summary: This paper provides a general review of the mechanisms, operating principles, and performance improvement strategies of proton ceramic electrochemical cells (PCECs). It also presents various applications of PCECs, such as H2O electrolysis, CO2 electrolysis, and synthesis of high-value chemicals. The future commercialization of PCECs and the existing challenges are discussed.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Lichang Ji, Yun Zhao, Lijuan Cao, Yong Li, Canliang Ma, Xingguo Qi, Zongping Shao
Summary: This study provides an in-depth analysis of the synthesis processes of coal tar pitches for fabricating hard carbon anodes in sodium-ion batteries. The different characteristics of the coal tar pitches have significant effects on the resulting carbon materials and their sodium storage behaviors.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Gongxu Lan, Huilin Fan, Yuan Wang, Hamidreza Arandiyan, Suresh K. Bhargava, Zongping Shao, Hongyu Sun, Yanguo Liu
Summary: The surface atomic arrangement and defective structures of electrocatalysts play a crucial role in determining their catalytic activity and selectivity. In this study, alpha-Fe2O3 nanosheets with surface oxygen vacancies were synthesized and their oxygen vacancy concentration was varied to study their oxygen reduction reaction (ORR) performance. The results showed that increasing the oxygen vacancy concentration improved the ORR activity up to a certain point, but further increase deteriorated the crystalline quality and affected the performance.
NEW JOURNAL OF CHEMISTRY
(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)
