Article
Chemistry, Physical
Rita Baddour-Hadjean, Marianne Safrany Renard, Jean-Pierre Pereira-Ramos
Summary: Recent intensive research on cathode materials beyond Li-ion batteries has rejuvenated interest in V2O5 due to its high reversible capacity. A ball-milling approach has been demonstrated to improve the charge efficiency and available capacity of gamma'-V2O5, resulting in high performance characteristics including a high working voltage, rate capability, charge efficiency, and cycle life.
JOURNAL OF POWER SOURCES
(2021)
Article
Electrochemistry
Yoshiaki Murata, Ryoji Inada, Yoji Sakurai
Summary: The study investigated the influence of electrolyte structure on the Ca2+ ion insertion and extraction properties of V2O5 by changing the concentration or solvent. It was found that the molar ratio of contact ion pairs (CIP) in the total ionic species significantly affected the electrochemical performance. Different electrolytes showed varying capacity and coulombic efficiency, with solvent-separated ion pairs (SSIPs) potentially contributing to performance differences.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Dongdong Zhang, Jin Cao, Yilei Yue, Teerachote Pakornchote, Thiti Bovornratanaraks, Jiantao Han, Xinyu Zhang, Jiaqian Qin, Yunhui Huang
Summary: The incorporation of La3+ ions into V2O5 cathodes can enhance Zn2+ diffusion kinetics and stabilize vanadium species, leading to improved cyclability and energy density of aqueous zinc-ion batteries. The La-V2O5 cathodes show exceptional rate capacity, long-term stability, and outstanding energy density, outperforming various metal-ion-doped V2O5 cathodes. Additionally, the La-V2O5 pouch cell exhibits excellent electrochemical performance, flexibility, and integration ability, providing guidance for other advanced electrochemical devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Yanwei Li, Wenhan Xu, Tao Sun, Jinhuan Yao
Summary: A two-dimensional bilayered V2O5 center dot nH2O nanomaterial with Zn2+ intercalation was synthesized via a facile sol-gel method combined with vacuum freeze-drying. The microstructure and surface morphology were characterized by XRD, EDS, XPS, and SEM measurements. The Zn2+ intercalation resulted in the formation of a layer-by-layer stacked sheet-like morphology and promoted the presence of V4+ states in V2O5 center dot nH2O. Compared to the pure sample, the V2O5 center dot nH2O sample with Zn2+ intercalation showed improved rate capability, cycling stability, Na+ diffusivity, and reduced electrochemical reaction resistance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
ShiYao Deng, Yu Jiang, Dejun Huang, Zhaofei Ma, Chuanhua Li, Wei Xiao, Xuemin Yan
Summary: In this study, hydrated Na+ was inserted into the V2O5 layer by a simple hydrothermal method to synthesize NaxV2O5·nH(2)O (NaVO), which can efficiently enhance the high-rate performance of V2O5 cathode. The insertion of hydrated alkali metal ion into interlayer of nanomaterials is ideal for V-based materials and other layered cathode materials for AZIBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qiangchao Sun, Hongwei Cheng, Yifei Yuan, Yanbo Liu, Wei Nie, Kangning Zhao, Kun Wang, Wenli Yao, Xionggang Lu, Jun Lu
Summary: Interlayer engineering is a promising strategy to modify the structure of layered vanadium-based oxides for optimized ion-diffusion capability. This study explores the role of interlayer crystal water in tuning the charge storage properties and finds that regulating interlayer water content can enhance the reversibility of zinc ion diffusion and improve the cycling stability of V2O5·nH2O electrodes. Density functional theory calculations suggest that modulated electron structure in V2O5·nH2O materials provides a favorable electrostatic environment for reversible Zn2+ diffusion.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Jin Cao, Dongdong Zhang, Yilei Yue, Teerachote Pakornchote, Thiti Bovornratanaraks, Montree Sawangphruk, Xinyu Zhang, Jiaqian Qin
Summary: Introducing oxygen defects into vanadium pentoxide can significantly enhance the performance of zinc-ion batteries, including increasing interlayer spacing, lowering diffusion energy barriers, improving electron transport and storage capabilities, and enhancing cycling stability.
MATERIALS TODAY ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Zhiqin Cao, Chengyang Zuo, Zhiwei Liu
Summary: In this study, Ni incorporated rice-shaped V2O5 was successfully prepared by a synergistic strategy, which improved the ion and electron transfer properties and enhanced the kinetics and electrochemical performance of V2O5.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Renhui Jiang, Pei Li, Xiaoxi Guan, He Zheng, Shuangfeng Jia, Ligong Zhao, Huaiyuan Wang, Shuangshuang Huang, Peili Zhao, Weiwei Meng, Jianbo Wang
Summary: Framework structured tungsten bronzes have great potential as electrode materials for sodium-ion batteries. However, the structural instability caused by sodium ion migration remains a concern for battery performance and safety. In this study, we provide real-time experimental evidence of phase transitions in Na0.36WO3.14 framework structured tungsten bronze through the application of different external voltages. The mechanisms of phase transition associated with sodium ion migration are also revealed through theoretical calculations. This work contributes to a better understanding of phase instability in sodium tungsten bronzes and provides insights for designing high-stability sodium-ion batteries.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Renhui Jiang, Pei Li, Xiaoxi Guan, He Zheng, Shuangfeng Jia, Ligong Zhao, Huaiyuan Wang, Shuangshuang Huang, Peili Zhao, Weiwei Meng, Jianbo Wang
Summary: Framework structured tungsten bronzes show potential as electrode materials in sodium-ion batteries. However, the structural instability induced by sodium ion migration poses concerns for battery performance and safety. This study presents real-time experimental evidence of phase transitions in framework structured Na0.36WO3.14, with the formation of Na+-rich (Na0.48WO3) or Na+-deficient (NaxWO3, x < 0.36) phases under different external voltages. The atomistic phase transition mechanisms associated with sodium ion migration are revealed, offering insights for the design of stable sodium-ion batteries.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Supriya Kadam, Ranjit Kate, Ujjwala Chothe, Parshuram Chalwadi, Jayant Shingare, Milind Kulkarni, Ramchandra Kalubarme, Bharat Kale
Summary: In this study, the performance of MWCNT@Na3V2(PO4)3 (NVP) composite and pure NVP as cathode materials for sodium-ion batteries (SIBs) were compared. The distribution of MWCNTs in the NVP structure was confirmed through morphological analysis. Impedance spectroscopy showed that the MWCNT@NVP composite had higher Na ion diffusion and specific capacity compared to pure NVP. The composite also exhibited better stability and Coulombic efficiency, making it a promising cathode material for SIBs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Jay Singh, Kichang Hong, Younggwon Cho, M. Shaheer Akhtar, Jungwon Kang, Alok Kumar Rai
Summary: This article investigates the hydrothermal synthesis of oval-shaped V2O5 nanoparticles using a metal-organic framework (MOF) as a template. The characterized sample reveals that the unique morphology of the nanoparticles, with a large surface area and numerous channels for lithiation and de-lithiation, leads to improved electrochemical performances. The V2O5 electrodes show promising potential as cathode materials for next-generation lithium-ion batteries.
Article
Chemistry, Physical
Anni Liu, Feng Wu, Yixin Zhang, Ying Jiang, Chen Xie, Keqing Yang, Jiahui Zhou, Man Xie
Summary: In this study, a doubly modified V2O5-based cathode (PVM) intercalated with PANI and composited with MXene was synthesized. The PVM cathode exhibits excellent electrochemical performance and structural stability due to the fast diffusion of ions, efficient charge transfer, and improved conductivity. This work provides fundamental guidance for the development of high-performance cathodes for AZIBs.
Review
Electrochemistry
Kazuma Gotoh
Summary: Sodium-ion batteries (NIBs) have attracted considerable attention as next-generation batteries, and nuclear magnetic resonance (NMR) analysis reveals the states of sodium ions and the charging-discharging mechanism of the electrodes. Through NMR techniques, a better understanding of NIB electrode materials can be achieved.
BATTERIES & SUPERCAPS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ghassen Charrad, Justine Harmel, Romain Berthelot, Pierre-Louis Taberna, Patrice Simon, Patrick Rozier
Summary: Layered oxides with the composition NaxMO2 have attracted attention for their composition diversity and promising electrochemical performances in sodium-ion batteries. This study attempts to synthesize sodium-rich P-type NaxMn2/3Ni1/3O2 and NaxMn1/2Ni1/2O2 and investigates their electrochemical behavior. The optimization of the synthesis protocol led to stabilize only P3-type single-phases. The investigation shows that the actual Na content is limited but still higher than conventionally reported for most of P3-type layered oxides.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Thi Thom Nguyen, Le Thanh Nguyen Huynh, Thi Nam Pham, Thanh Nhut Tran, Thi Thanh Nguyen Ho, Tien Dai Nguyen, Thi Thu Trang Nguyen, Thi Kieu Anh Vo, Gia Vu Pham, Viet Hai Le, The Tam Le, Thai Hoang Nguyen, Hoang Thai, Trong Lu Le, Dai Lam Tran
Summary: In this study, a cost-effective and high-performance electrode for brackish water capacitive deionization (CDI) desalination was developed by dispersing graphene/carbon nanotubes conducting hybrid in coconut shell derived activated carbon. The hybrid additive at 1 wt% showed more effective performance than single additives, demonstrating synergistic effects both technically and economically. This is the first study to report the application of ultra-low content AC/CNTs hybrid in AC based CDI electrodes.
Article
Chemistry, Physical
Ankush Bhatia, Jean-Pierre Pereira-Ramos, Nicolas Emery, Rita Baddour-Hadjean
Summary: The study demonstrates the promising properties of the puckered layered gamma'-V2O5 polymorph as a cathode material for potassium-ion batteries, showing stable insertion and release of K+ ions and remarkable structural flexibility to accommodate large-sized K+ ions.
CHEMISTRY OF MATERIALS
(2021)
Article
Electrochemistry
Viet Hai Le, Le Thanh Nguyen Huynh, Thanh Nhut Tran, Thi Thanh Nguyen Ho, Minh Nhat Hoang, Thai Hoang Nguyen
Summary: The study fabricated a composite coconut-shell-derived activated carbon/carbon nanotubes electrode with low CNTs content for desalination, demonstrating superior desalination performance in single-pass mode.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Quoc Khuong Vo, Anh Thu Nguyen, Huu Tien Ho, Le Thanh Nguyen Huynh, Thi Phuong Phong Nguyen, Thi Hong-Tham Nguyen
Summary: Gold nanostars (AuNSs) were prepared using collagen as the stabilizing agent in a one-step reduction process. The morphology and length of the AuNSs were controlled by adjusting experimental composition and pH values. Characterization techniques provided a detailed insight into the synthesized AuNSs. The environmentally friendly synthesis method showed promising biomedical applications potential.
JOURNAL OF NANOMATERIALS
(2022)
Article
Electrochemistry
Nguyen Thi Kim Ngan, Nguyen Thi Thom, Nguyen Nhat Xuan An, Le Viet Hai, Pham Thi Nam, Huynh Le Thanh Nguyen, Pham Van Viet, Nguyen Thi Thu Trang, Nguyen Thai Hoang, Dai Lam Tran
Summary: A novel sensitive and selective methanol sensor based on NiOOH/PANI-Gr and NiOOH/PANI-CNTs interfaces was successfully fabricated, showing remarkable electrocatalytic performance, high reproducibility, a wide linear range, and a low detection limit for methanol oxidation. The fabricated interfaces exhibited high selectivity towards methanol oxidation without interference from other alcohols, making them promising for field-tests in controlling adulterated products such as alcohol beverages and gasoline.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Nicolas Emery, Ankush Bhatia, Yanis Ghaleb, Alexander O. Mitrushchenkov, Celine Leonard, Jean-Pierre Pereira-Ramos, Rita Baddour-Hadjean, Ronald I. Smith
Summary: The influence of Ni/Mn order on the electrochemical behavior of LiMn2-xNixO4 spinel phases is investigated. It is found that the Ni/Mn order is maintained at room temperature in samples prepared at certain temperatures, and a defect structure called antiphase domain boundaries (APBs) is observed. The synthesis temperature and nickel content are shown to affect the defect density and voltage profile.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Y. Zhou, N. Emery, S. Franger, O. Nguyen, J. P. Pereira-Ramos, R. Baddour-Hadjean
Summary: The kinetics of electrochemical lithium intercalation in nitridonickelate is studied, and the results indicate reversible and stable capacity, as well as stable impedance during long cycling, highlighting the good chemical and structural stability of the material.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Le Thanh Nguyen Huynh, Thanh Nhut Tran, Thi Thanh Nguyen Ho, Xuan Hoa Le, Viet Hai Le, Thai Hoang Nguyen
Summary: This study successfully modified the porosity of coconut-shell activated carbon through CO2 activation at high temperature, improving its performance in capacitive deionization and nickel removal. The results suggest the potential application of CO2-activated AC in capacitance deionization technology.
Article
Materials Science, Ceramics
Nathan Brard, Johan Petit, Nicolas Emery, Nicolas Horezan, Stephane Bach
Summary: Transparent Y2O3-MgO nanocomposite ceramic was synthesized by sol-gel route and processed through sintering and post-treatments to achieve excellent performance.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Thomas Fernandes, Thomas Cavoue, Pascal Berger, Celine Barreteau, Jean-Claude Crivello, Nicolas Emery
Summary: In this study, the valence state of nickel ion in lamellar lithiated nitridonickelates was found to be close to +1.5, and a solid solution Li3-1.5xNixN was discovered. The attempt to introduce more nickel resulted in the presence of Li1.97Ni0.68N phase with metallic nickel as an impurity.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
H. Shen, S. S. Setayandeh, V. Paul-Boncour, N. Emery, Z. Li, P. Li, L. Jiang, P. A. Burr, M. Latroche, J. Zhang
Summary: Y0.95Ni2 intermetallic shows potential for hydrogen storage, but its low stability leads to hydrogen-induced amorphization. The stability can be controlled by the geometric factor rA/rB of the AB2 Laves phase. This study focuses on the Mn-Ni-Y system and finds that Mn substitution helps achieve a close-to-ideal rA/rB to avoid amorphization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Hoang Anh Nguyen, Thi Nam Pham, Nguyen Thao Trang Le, Le Thanh Nguyen Huynh, Thi Thu Trang Nguyen, Quoc Khuong Vo, Thai Hoang Nguyen, Viet Hai Le, Thi Thu Trang Nguyen, Thi Thom Nguyen, Dai Lam Tran, Trong Lu Le
Summary: This study aimed to prepare TiO2@CNTs composites via a simple sol-gel route and investigate their electrochemical performance in a neutral aqueous electrolyte of 1 M Na2SO4. The synergistic effects between TiO2 and CNTs in the composite electrode resulted in a significantly high specific capacitance of 227 F•g(-1) at a scan rate of 10 mV•s(-1). EIS analysis revealed both the pseudocapacitance process and the superior electrochemical performance of TiO2@CNTs-5%. The calculated ionic diffusion coefficients for TiO2@CNTs-5%, TiO2@CNTs-3%, and TiO2@CNTs-1% were 1.47 x 10(-17) cm(2)•s(-1), 1.12 x 10(-17) cm(2)•s(-1), and 0.71 x 10(-17) cm(2)•s(-1), respectively. Furthermore, TiO2@CNT electrodes were used to assemble a symmetrical supercapacitor with an excellent capacitance of 97.3 F•g(-1) at a current rate of 1 A•g(-1). The device showed long-term stability after 5000 cycles without degradation, and the energy density of TiO2@CNTs ranged from 15 to 43.8 Wh•kg(-1) in the power density range of 1800-18,000 W•kg(-1).
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Thao Trang Le Nguyen, Thanh Tung Nguyen, Hoang Anh Nguyen, Hoang Long Ngo, Thu Thao Nguyen, Quoc Khuong Vo, Le Thanh Nguyen Huynh, Thu Trang Nguyen Thi
Summary: TiO2/CNTs nanocomposite electrode exhibits remarkable capacitance, conductivity, and durability, making it a suitable electrode candidate for CDI technology.
CLEAN-SOIL AIR WATER
(2023)
Article
Multidisciplinary Sciences
Le Thanh Nguyen Huynh, Hoang Anh Nguyen, Hoang Vinh Pham, Thanh Nhut Tran, Thi Thanh Nguyen Ho, Tan Le Hoang Doan, Viet Hai Le, Thai Hoang Nguyen
Summary: Capacitive deionization is a simple and cost-effective method for brackish water desalination. This study developed a composite coconut-shell-derived activated carbon and nano-carbonaceous material electrode for the removal of heavy metals. The activated electrode showed high specific capacitance and salt adsorption rate.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Cuong Van Le, My Thi Tra Nguyen, Nghia Tran Trung Le, Hung Khac Le, Tri Minh Bui, Dat Huu Ho, Viet Hai Le, Thi Thanh Nguyen Ho, Trong Liem Chau Pham, Le Thanh Nguyen Huynh, Thai Hoang Nguyen, Thanh Phong Mai, Nam Minh Hoang, Hieu Huu Nguyen
Summary: The composite TiO2/rGO, prepared by incorporating 1% rGO into TiO2 photoanode, significantly enhances the performance of DSSC; XPS, Raman spectroscopy, and FT-IR analysis confirm the formation of chemical bonds between titania and carbon in the composites.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(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)
