Article
Energy & Fuels
Chia-Sheng Liu, Cheng-Liang Huang, Hsing-Chih Fang, Kuo-Yung Hung, Chien-An Su, Yuan-Yao Li
Summary: The study utilized coaxial fiber cables to achieve high specific capacitance in aqueous solution, high energy density, and power density within a linear working range. The binder-free, conductive-medium-free cable mat is foldable and suitable for use in flexible SC devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Shichao Huang, Xueyu Zhang, Xijia Yang, Liying Wang, Xuesong Li, Wei Lu
Summary: The study utilizes a simple and low-cost preparation strategy to grow MnO2 nanosheets on carbon foam for the synthesis of electrodes, resulting in a composite material with excellent electrochemical performance. The composite material exhibits good cycling stability in a three-electrode system and achieves high energy density and specific capacitance.
Article
Engineering, Electrical & Electronic
Shradha Dutt, Sonali Verma, Anoop Singh, Prerna Mahajan, Bhavya Padha, Aamir Ahmed, Sheng-Joue Young, Vinay Gupta, Dena N. Qasim Agha, Sandeep Arya
Summary: This study investigates the structural and electrochemical performance of an electrodeposited MnO2/ rGO-conductive fabric nanocomposite as a binder-free electrode for supercapacitors. The results show significant capacitance and outstanding cyclic stability of the synthesized nanocomposite.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Energy & Fuels
Xiaoyi Du, Chuanxin Hou, Hideo Kimura, Xiubo Xie, Huiyu Jiang, Xueqin Sun, Xiaoyang Yang, Yuping Zhang, Wei Du
Summary: Production cost, electrochemical performance, and service life are critical factors in the design and manufacture of supercapacitor electrode materials. This study successfully synthesized low-cost and high-stability carbon@MnO2 composite materials, utilizing a three-dimensional porous wheat flour-derived carbon (WFC) matrix decorated with MnO2 nanoparticles (WFC@MnO2). The prepared electrodes showed a high capacitance of 197 F g-1 at 1.0 A g-1 and excellent capacitance retention of 100% after 5000 cycles, demonstrating the synergistic effect of MnO2's high capacitance and WFC's excellent capacity retention. Moreover, the symmetric supercapacitor assembled with WFC@MnO2 achieved an outstanding electrochemical performance, with energy density and power density maxima of 17.1 Wh kg-1 and 11,000 W kg-1, and a capacitance retention of 95% after 5000 cycles. This strategy provides a cost-effective and high-performance approach for the development of 3D porous WFC@MnO2 composites, contributing to the utilization of waste biomass and environmental protection.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Jingzhou Ling, Aimei Gao, Yulan Huang, Fenyun Yi, Qizhi Li, Gengyi Wang, Yiqin Liu, Dong Shu
Summary: Hollow MnO2 nanoboxes with abundant active sites, improved electrical conductivity, and enhanced Na+ diffusion kinetics were successfully prepared by a triethanolamine-induced strategy. These nanoboxes exhibited high specific capacitance, superior rate performance, and excellent capacitive retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yuantao Li, Jiajun Zhu, Jiyang Xie, Yongyun Mao, Wanbiao Hu
Summary: A self-sacrifice-template epitaxial growth strategy was proposed for constructing 3D hierarchical bimetallic pseudocapacitive materials, which exhibited a special hollow tectorum-like structure and showed high performance in energy storage. Multiple transport channels and nano-heterojunction structures were formed, facilitating electron transfer and enhancing electronic conductivity. This study provides important guidance for designing high-performance energy storage materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Qian Zhang, Fengjian Yang, Chaozhe Zhang, Hongzhou Dong, Jing Sui, Liyan Yu, Yingjie Chen, Jianhua Yu, Lifeng Dong
Summary: A high-performance wire-shaped supercapacitor has been successfully fabricated in this study, showing excellent capacitive performance, long-term cycling stability, and flexibility under high power density, indicating broad application prospects in the field of portable and wearable energy storage devices.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Weijie Hu, Bin Wang, Yanling Yu, Nuoxin Wang, Xiaojuan Wu
Summary: BFCNi, composed of BFC and nickel-based hydroxide, exhibits excellent specific capacitance and rate capability. The energy storage mechanism combines surface control and diffusion control behaviors. The asymmetric supercapacitor based on BFCNi and BFC shows great promise in electrochemical energy storage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Aldo Girimonte, Andrea Stefani, Massimo Innocenti, Claudio Fontanesi, Roberto Giovanardi
Summary: The study found that an applied external magnetic field has a positive influence on the MnO2 electrodeposition process, improving deposition efficiency and leading to more compact and uniform coatings, but resulting in a decrease in capacitance values.
Article
Chemistry, Physical
Patin Tagsin, Pitphichaya Suksangrat, Pawinee Klangtakai, Pornjuk Srepusharawoot, Chesta Ruttanapun, Pisist Kumnorkaew, Samuk Pimanpang, Vittaya Amornkitbamrung
Summary: The study utilizes electrophoretic deposition to prepare AC-MnO2 films as supercapacitor electrodes, which exhibit high specific capacitance and cycling stability. Analysis by EDX and XPS reveals the changes in sodium content and manganese oxide valence states during discharge and charge processes. Computational simulation shows the atomic connections during sodium insertion into the α-MnO2 structure.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Sangeeta Adhikari, Gi-Hyeok Noh, Do-Heyoung Kim
Summary: Core-shell designed electrode architectures with favorable material components, specifically FeCo2O4@Ni(OH)2, were successfully grown on a Ni-foam substrate. These core-shell arrays exhibited improved electrochemical performance, with a high specific capacitance of 1944 F g-1 and better performance than individual FeCo2O4 and Ni(OH)2. The improved performance was attributed to the synergistic effects of the core-shell array architectures and enhanced electrical conductivity through electroactive sites.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Yudi Wei, Mingming Zheng, Wenlong Luo, Bo Dai, Jiajia Ren, Mingliang Ma, Tingxi Li, Yong Ma
Summary: This study presents a flexible asymmetric supercapacitor device based on MXene, with an increased voltage window of 1.5 V, more than twice wider than symmetric devices. The asymmetric device exhibits high specific capacitance, good cycling stability, and can power a 3 V LED for 90 minutes after being bent 1000 times. It shows excellent application prospects for the next generation of electrochemical energy storage devices.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Chemistry, Physical
Yue Zhao, Huilian Hao, Tianliang Song, Xu Wang, Changwang Li, Wenyao Li
Summary: Supercapacitors have gained attention due to their long cycle stability, fast charge-discharge performance, and high-power density. This review summarizes the synthetic strategies and research progress of MnO2-graphene-based multi-element composites, including their combination with various carbon materials, transition metal oxides, and conducting polymers. The possible development directions of MnO2-graphene-based composite electrode materials in the future are also discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
P. Vishnu Vardhan, Thiruvenkatam Subramaniam, P. Bharathidasan, S. Devaraj
Summary: Modifying the electrolyte can enhance the capacitance properties of electrodeposited MnCO3. In this study, the choice of aqueous electrolyte, specifically La(ClO4)3, led to higher specific capacitance and better rate capability due to higher ionic conductivity and an increase in the number of electrochemical active sites.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Nagesh Maile, S. K. Shinde, A. Fulari, D. S. Lee, V. J. Fulari
Summary: Different nanostructures of active material have a significant impact on supercapacitive performance, as shown by synthesizing MnCo2O4 nanoflakes through electrochemical methods. Varying deposition parameters resulted in structural evolution and confirmed the formation of spinel MnCo2O4. Optimized current density and deposition time led to improved supercapacitive performance, with a maximum specific capacitance of 52.6 F g(-1).
Article
Chemistry, Physical
Qingsong Hu, Jintao Dong, Yong Chen, Jianjian Yi, Jiexiang Xia, Sheng Yin, Huaming Li
Summary: In this study, MIL-125(Ti)/BiOI nanocomposite was synthesized and applied for the adsorption and degradation of specific organic contaminants in water. The nanocomposite exhibited high adsorption capacity and photodegradation rate due to the advantageous interface contact and electron transfer of MIL-125(Ti) and BiOI. This research extends the knowledge in constructing bifunctional nanocomposites with potential applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zhiyuan Pang, Bin Wang, Xingwang Yan, Chongtai Wang, Sheng Yin, Huaming Li, Jiexiang Xia
Summary: This study successfully designed a novel Sillen-structured multimetal high entropy oxyhalide material, which combines the benefits of high stability and more active sites with improved migration and separation of photogenerated electrons, showing promising catalytic activity for organic pollutants degradation.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Junze Zhao, Gaopeng Liu, Yi Zhang, Jintao Dong, Yu Wang, Yunmiao Liu, Huaming Li, Jiexiang Xia
Summary: This study improves the activity of the photo-Fenton catalyst by synthesizing MoS2/FeOCl (MS/FOC) heterojunction. The results show that with the assistance of MS, MS/FOC has higher charge transfer efficiency and can efficiently degrade pollutants in water.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Inorganic & Nuclear
Sainan Ji, Jintao Dong, Mengxia Ji, Wenjuan Zou, Sheng Yin, Zhigang Chen, Jiexiang Xia
Summary: This study synthesized W18O49/BiOBr Z-scheme heterojunction photocatalyst using a mechanical ball milling method. The synthesized catalyst exhibited enhanced visible light absorption and rapid photogenerated electrons migration, leading to highly efficient degradation of methyl orange and tetracycline hydrochloride.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Zhiyuan Pang, Bin Wang, Xingwang Yan, Yingjie Hua, Sheng Yin, Huaming Li, Jiexiang Xia
Summary: The Sillen-structured bimetallic oxyhalide CdBiO2Br was successfully synthesized using a simple solvothermal method in the presence of a reactive ionic liquid. The introduction of CdBiO2Br shortened the distance between layers, facilitating the migration and separation of photogenerated carriers and promoting the generation of reactive oxygen species. This study provides a feasible scheme for the research and development of new layered photocatalytic materials.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xingwang Yan, Bin Wang, Junze Zhao, Gaopeng Liu, Mengxia Ji, Xiaolin Zhang, Paul K. Chu, Huaming Li, Jiexiang Xia
Summary: In this study, hierarchical columnar ZnIn2S4/BiVO4 (ZIS/BVO) Z-scheme composite was designed to achieve high-speed directional migration and separation of photogenerated carriers at heterointerfaces. The structure and performance of the composite material were verified by spectroscopy and microscopy. The optimized composite material exhibited enhanced photocatalytic mineralization antibiotic properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Jun Di, Yan Li, Yi Zhang, Yiling Liu, Suwei Wang, Yao Wu, Huaming Li, Jiexiang Xia
Summary: Novel graphene-like boron nitride (BN)/Bi3O4Br photocatalysts were synthesized controllably for the first time through a facile solvothermal method. Layer contact stacking between graphene-like BN and ultrathin Bi3O4Br was achieved with strong interaction. Dehalogenation and ultrathin structure of Bi3O4Br were designed to enhance visible light absorption and accelerate charge transfer, resulting in greatly improved photocatalytic performance. Graphene-like BN acted as a surface electron-withdrawing center and adsorption center, facilitating molecular oxygen activation. O-2(center dot-) was identified as the main active species during the degradation process.
TRANSACTIONS OF TIANJIN UNIVERSITY
(2023)
Article
Chemistry, Physical
Yi Zhang, Jun Di, Xingwang Zhu, Mengxia Ji, Chao Chen, Yanan Liu, Lina Li, Tiange Wei, Huaming Li, Jiexiang Xia
Summary: This study designs oxygen-vacancy-rich Bi2Sn2O7 (BSO) and Bi-O vacancy pairs on ultrathin BiOBr (BOB) to construct a chemical bonding interface, forming a Bi2Sn2O7/BiOBr (BSOB) S-scheme heterojunction. BSOB exhibits efficient photocatalytic nitrogen reduction performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Xingwang Yan, Xiaolin Zhang, Bin Wang, Ziran Chen, Junze Zhao, Gaopeng Liu, Dan Li, Qingdong Ruan, Liangliang Liu, Yue Xu, Mengxia Ji, Paul K. Chu, Huaming Li, Jiexiang Xia
Summary: Efficient heterojunction photocatalysts with spatial separation of photogenerated carriers are crucial to photo-catalysis. The unique carbonized polymer dots/ZnIn2S4 (CPDs/ZIS) Z-scheme heterojunction is designed to realize efficient spatial directional separation of photogenerated carriers and deliver enhanced photocatalytic performance in pollutant degradation. The CPDs generate more superoxide radicals to facilitate mineralization of organic pollutants and retain more holes for oxidation, while the Z-scheme migration mechanism of photogenerated carriers in the CPDs/ZIS composite preserves the original valence band potential of ZIS.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Wenjuan Zou, Jintao Dong, Mengxia Ji, Bin Wang, Yingjie Li, Sheng Yin, Huaming Li, Jiexiang Xia
Summary: Bi25FeO40-B nanoparticles prepared via the mechanical ball-milling method possess abundant oxygen vacancies and show high reactive oxygen species production performance. The H2O2 decomposition efficiency can reach 55.3% using Bi25FeO40-B catalyst, which is much higher than that of Bi25FeO40 prepared by the traditional hydrothermal method. The Bi25FeO40-B/H2O2 heterogeneous Fenton system demonstrates efficient performance for simultaneous oxidation of tetracycline hydrochloride (TCH) and reduction of Cr(VI), capable of removing 75.2% of 50 mg/L TCH and 93.0% of 20 mg/L Cr(VI) at pHinitial= 7, respectively.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Guangqiang Lin, Yanli Wang, Lingxu Yang, Rongfa Sun, Liankui Wu, Xiaofeng Zhang, Huijun Liu, Chaoliu Zeng
Summary: This study investigates the CMAS corrosion behavior of a novel high entropy material (Nd0.2Gd0.2Y0.2Er0.2Yb0.2)(2)Zr2O7 and reveals the formation of a dense layer on the material's surface, composed of apatite type and RE/Ca-ZrO2 phases, which significantly slows down the infiltration rate of CMAS. The study highlights the potential of high entropy materials for extreme resistance to CMAS corrosion.
Article
Materials Science, Multidisciplinary
Hao-Jie Yan, Yun-Yang Li, Ruo-Zhan Yin, Qing-Qing Sun, Hui-Jun Liu, Chao-Liu Zeng, Lian-Kui Wu, Fa-He Cao
Summary: SiOC coating was electrodeposited on TiAl alloy to improve its high temperature oxidation resistance. The SiOC coating exhibited good thermal stability and resisted the formation of crystal structures and pores, while also improving the barrier property of the oxide scale.
Article
Chemistry, Physical
Xin-Hui Gu, Xin-Ran Li, Qin-Hao Zhang, Lian-Kui Wu, Fa -He Cao
Summary: The current research on high entropy alloys (HEAs) focuses mainly on the influence of element composition and percentage difference on their corrosion resistance. However, there are obvious differences in the properties of the passive film formed by different element additions. Therefore, it is important to investigate the effect of the passive film on the corrosion behavior of HEAs.
Article
Materials Science, Multidisciplinary
Yun-Yang Li, Hao-Jie Yan, Lian-Kui Wu, Fa-He Cao
Summary: In this study, a silicon oxycarbide (SiOC) coating was fabricated using polydimethylsiloxane (PDMS) and its oxidation behavior at high temperatures was evaluated. The SiOC coating exhibited good oxidation resistance, but cracks on the surface of the coating were observed, which may lead to the formation of thermally grown oxide layer.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhe-Xuan Li, Yan-Hua Liu, Hui-Jun Liu, Lian-Kui Wu, Fa-He Cao
Summary: In order to improve the hot corrosion resistance of Ti48Al2Nb2Cr alloy, an Al coating was deposited using magnetron sputtering and then anodized in fluorine-containing ethylene glycol. Prior to salt deposition, the specimen was preoxidized in air to form an Al2O3-based protective layer. The hot corrosion behavior of the specimen contaminated with 75 wt% Na2SO4 and 25 wt% NaCl was evaluated at 700 degrees C. It was found that anodization facilitated the formation of a dense Al2O3 layer, while the magnetron sputtered Al coating provided Al element for continuous generation of protective Al2O3, acting as a diffusion barrier for inward diffusion of oxygen, salt ions, and outward diffusion of matrix elements.
MATERIALS TODAY COMMUNICATIONS
(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)
