Electrochimica Acta最新文献

{"title":"Electrochemical generation of interchain σ-couplings within poly-duren-3,4-bi-dioxythiophene (PDbDOT)","authors":"Francisco A. Bravo-Plascencia, M. Paola Flores-Morales, Gerardo Salinas, Bernardo A. Frontana-Uribe","doi":"10.1016/j.electacta.2024.145375","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145375","url":null,"abstract":"Conducting polymers are among the most interesting materials due to their numerous applications ranging from sensing to energy storage devices. Among the different phenomena associated with the electric, electrochemical and optical properties of these macromolecules, charge trapping via σ-couplings remains highly controversial. This work studied the electrochemical generation of σ-couplings between neighboring oligomeric chains by taking advantage of the physicochemical properties of the novel poly-3,4-duren-bi-dioxythiophene (PDbDOT). The double thiophene core, within the monomeric unit, in synergy with the spatial conformation provided by the duren moiety, leads to the generation of 3-D oligomeric networks. This was evidenced by the electric, electrochemical and spectroelectrochemical characterization of PDbDOT and its proper comparison with well-known poly-3,4-alkoxy thiophenes. During the charge/discharge process of PDbDOT the charge carrier transport mechanism is mainly governed by the mixed valence model due to the ordered oligomeric arrangement. Such unconventional excess of interwire charge hopping between oligomers, coupled to the spatial distribution of the polymeric chains, leads to an irreversible σ-charge trapping.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"69 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxygenated Li3PS4 Electrolyte with improved Conductivity and Air Stability for All-Solid-State Li–ion Batteries","authors":"D. Narsimulu, Yuvaraj Subramanian, Rajesh Rajagopal, Kwang-Sun Ryu","doi":"10.1016/j.electacta.2024.145382","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145382","url":null,"abstract":"All solid-state Lithium–ion battery (ASSLB) is a promising energy storage device, owing to its high-energy density and safety. In this work, we report a Li₃PS_1–xO_x by O-doped β–Li₃PS₄ using planetary ball-milling method. As-prepared Li₃PS_1–xO_x is utilized as a solid electrolyte (SE) for the ASSLB. Experimental observation including electrochemical impedance spectroscopy (EIS), air stability, and electrochemical tests reveal that the small amount of O-doping into β–Li₃PS₄ can abruptly improve the ionic conductivity, air stability, and electrochemical properties. <em>x=</em>0.2 amount of O-doping (Li₃PS_3.8O_0.2) exhibits high ionic conductivity of 1.13 mS·cm⁻¹, which is 2.56 times higher than that of the un-doped β–Li₃PS₄ (0.44 mS·cm⁻¹). Meanwhile, H₂S suppression of Li₃PS_3.8O_0.2 is 10 times higher than that of the β–Li₃PS₄. Different kinds of anode material (Li, In, and Li–In) for the Li₃PS_3.8O_0.2 glass–ceramic SE with the Li (Ni₀.₈Co₀.₁Mn_0.1)O₂ (NCM811) as cathode is proposed for the fabrication of the ASSLB cell. The NCM811/Li₃PS_3.8O_0.2/Li–In delivered higher reversible capacity and better rate performances than the NCM811/Li₃PS₄/Li–In ASSLB, owing to O-incorporation. These results reveal that the partial replacement of S²⁻ with O²⁻ could improve the ionic conductivity, air stability, and improve the electrochemical performances of β–Li₃PS₄.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"11 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of co-doped magnetite (Fe3O4) nanomaterials with reduced graphene oxide and bismuth for photocatalytic, supercapacitor, and antimicrobial applications","authors":"Lakshmi Chinnadurai, P. Balraju, Muthukumarasamy Natarajan, Dhayalan Velauthapillai","doi":"10.1016/j.electacta.2024.145376","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145376","url":null,"abstract":"The present study reports the successful preparation of pure magnetite Fe₃O₄ (F), bismuth doped Fe₃O₄ (FB), reduced graphene oxide doped Fe₃O₄ (FR), and bismuth-rGO co doped Fe₃O₄ (FBR) using the simple co-precipitation process. The produced samples were subjected to morphological, optical, FTIR, and structural analyses. XPS- Photo electron spectroscopy indicates the presence of relevant elements and oxidation states. BET surface analysis shows the presence of enhanced surface area in conjointly doped Fe₃O₄ (FBR) and rGO doped Fe₃O₄ (FR). The photocatalytic activity of the materials (F, FB, FR, and FBR) against several organic dyes [MB, Rho-b, and Congo red (CR)] was investigated. Using the disc diffusion method, the antibacterial activity of the samples was investigated against a variety of gramme positive and gramme negative bacteria. The findings indicate that the co-doped magnetite nano composite exhibits strong antimicrobial activity. The synthesised materials were also used as electrode materials for supercapacitors. The electrochemical performance of the FBR-based supercapacitor was reliable, and it exhibited a high specific capacitance of 732.51 Fg^-1 at a current density of 1 Ag^-1. From the CV analysis, the measured capacitance was 440.67 Fg^-1 for a three-electrode configuration. The symmetric device has been constructed using bismuth and rGO co doped (FBR) nano composite and it exhibited a specific capacitance of 173 Fg^-1, specific energy of 24 W h Kg¹, and specific power of 1999 W Kg^-1 at a current density of 1 Ag^-1 with notable cyclic stability of about 89% and had average capacity retention and excellent coulombic efficiency which is about 95% up to 8000 cycles which is retained even after 18,000 cycles.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"13 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular insights into the effect of adsorption and reaction of H2O-O2-Cl- on initial electrochemical corrosion of steel","authors":"Yumei Nong, Zheng Chen, Ye Chen, Yunchao Tang, Yichen Wang, Kexin Liu, Mingqiang Qin","doi":"10.1016/j.electacta.2024.145385","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145385","url":null,"abstract":"A deeper understanding of the effect of chloride on the process of iron initial corrosion could reveal the detailed mechanism of the Cl^--induced acceleration corrosion of steel. In light of the difficulty to unravel the intricacies of H₂O-O₂-Cl^- interactions in experiments, this study conducted the molecular study on the effect of H₂O, O₂ and Cl^- coadsorption and interactions on the electrochemical corrosion process of Fe (100) surface by DFT method, and the electron-correlation functional is GGA-PW91. It is discovered that the adsorption of H₂O, O₂ and Cl^- all promote the electrochemical corrosion of iron. The electrochemical corrosion rate of iron surface rises as the Cl^-/H₂O concentration ratio increasing, while decrease with the Cl^-/O₂ concentration ratio increasing. The transition state search found that the presence of Cl^- assists the dissociation of H₂O on the iron surface, while the interaction between Cl^- and O₂ could be ignored. Moreover, the successive reaction of Cl^-, H₂O and O₂ with iron surface were further investigated. When the Cl^- reacts with H₂O ahead of O₂, the Cl^- promotes the iron oxidation via promoting the dissociation of H₂O. While O₂ and Cl^- firstly coadsorb on iron surface, Cl^- accelerates iron oxidation by exacerbating the iron surface losing electrons. These findings could facilitate the development of anti-corrosion techniques for steel in chloride environment.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"69 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CoFe-LDH Nanocage Derived from MOF Coupled with CNTs as Cathode Catalyst for Li-O2 Batteries","authors":"Yongming Zhu, Shan Zhi, Bangqi Wan","doi":"10.1016/j.electacta.2024.145384","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145384","url":null,"abstract":"Li-O₂ batteries(LOBs)have garnered substantial interest owing to their exceptional energy density. Nevertheless, the slow kinetics of discharge and recharge significantly hinder their commercial application. Herein, a one-step hydrothermal process was employed to anchor metal-organic framework (MOF)-derived CoFe-layered double hydroxides (CoFe-LDH) hollow nanocages onto carbon nanotubes, thereby improving the electrochemical efficiency of LOBs. The synthesized nanocomposite resulted in an increased specific surface area, providing more catalytically active sites and rapid diffusion pathways for lithium ions and oxygen. Owing to a synergistic effect, the CoFe-LDH@CNTs electrode, when used as a cathode in LOBs, exhibited a high initial discharge capacity (32.8 Ah g⁻¹ at 500 mA g⁻¹) and maintained 176 stable cycles at 500 mA g⁻¹ with a limited capacity of 500 mAh g⁻¹. Furthermore, the optimized d-orbital electron structure and d-band center were confirmed by density functional theory (DFT) calculations, reducing the reaction barrier and improving reactant adsorption, thus accelerating the kinetics of the catalytic reaction. This study presents an innovative strategy for designing electrocatalysts for LOBs by integrating bimetallic MOF-derived materials with carbon-based substrates.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"57 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polymer Electrolyte with inorganic and organic salts for Na-Ion Supercapacitor","authors":"Varun Kumar Singh, Amita Chandra","doi":"10.1016/j.electacta.2024.145377","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145377","url":null,"abstract":"The optimized high ion conducting polymer electrolyte film containing copolymer PVdF-HFP, 10 wt.% inorganic salt {sodium bis(trifluoromethane sulfonyl)imide (NaTFSI)} and 70 wt.% organic salt {1-butyl-1-methypyrrolidinium bis(trifluoromethane sulfonyl) imide ([BMPYr] [TFSI])} have been used for the fabrication of Na-ion supercapacitor. The optimized composition of the electrolyte film possesses maximum room temperature (RT) ionic conductivity (∼0.87 mS/cm), excellent mechanical stability and large operating potential window (∼5.5 V). Using this film and activated carbon electrode (ACE (AC∼0.8 mg/cm²)), electrochemical double layer capacitor (EDLC)/Na-ion supercapacitor has been fabricated. The bulk resistance of this cell is found to be 22.9 Ω which is an evidence of good electrode-electrolyte contact. The cyclic voltammetric (CV) results of the EDLC-cell displays almost rectangular shape which demonstrates their capacitive behavior. The fabricated Na-ion supercapacitor has delivered specific capacities of ∼173 F/g, 151.91 F/g, 145.32 F/g and 122.33 F/g at different areal current densities (∼0.5, 0.8, 1.0 and 2.0 mA/cm², respectively) along with the coulombic efficiency ranging from 97.6% to 99.9% upto 4500 cycles at 1 mA/cm². The obtained value of the specific capacitance(s) of the EDLC cell from cyclic voltammetry is in good agreement with the value obtained from galvanostatic charge-discharge (GCD) measurements. Also, a nearly stable cycling performance has been obtained at 1 mA/cm² upto 2500 cycles and after that the value of the specific capacitance (<em>C_SP/CD</em>) decreases slightly upto 4500 cycles. This decrease in <em>C_SP/CD</em> value may be because of increased thickness of solid electrolyte interface (SEI) layer and its corresponding interfacial resistance. The maximum specific energy and power density at 0.5 mA/ cm² areal current density for first cycle are 31.52 Wh/Kg and ∼472.8 kW/Kg, respectively. On using ACE having AC∼1.6 mg/cm², the fabricated Na-ion EDLC-cell has given maximum value of specific capacitance as ∼72.6 F/g at 0.5 mA/cm² alongwith coulombic efficiency in the range of 96.5 % to 99.5 %. For the first cycle, the energy as well power density increase (∼40.31 Wh/Kg and ∼499.12 kW/Kg, respectively) and show stable cyclability upto 3000 cycles.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"112 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defect-Rich In2S3/CoS2 Heterostructure for Rapid Storage of Sodium Ions","authors":"Fangshun Zhu, Suyuan Zhang, Qingfeng Zhang, Kuanjie Ma, Jun Wu, Yurong Cai","doi":"10.1016/j.electacta.2024.145383","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145383","url":null,"abstract":"Aiming to accelerate sodium-ion transport kinetics and improve electrochemical cyclability of batteries, an In₂S₃/CoS₂ bimetallic sulfide heterostructure was synthesized as anodes of sodium-ion batteries (SIBs) in this paper by a feasible ion exchange and subsequent hydrothermal vulcanization technique based on a cobalt metal-organic skeleton (ZIF-67) precursor. As-prepared In₂S₃/CoS₂ composite exhibited an excellent rate capability of 453.8 mAh g^-1 at 10 A g^-1 and outstanding cyclability of 464.06 mAh g^-1 after 600 cycles at 2 A g^-1. The built-in electric filed between heterogeneous interface of In₂S₃ and CoS₂ plays a dominant contribution on improvement of electronic conductivity and charge transfer kinetics. Beyond that abundant defects derived from ion exchange and nanocrystallization of composite particles also have a positive synergistic effect on inducing additional active centers for adsorption of Na⁺ and shortening ion transport distance for further accelerating reaction kinetics. Based on exploring conversion and alloying mechanism of In₂S₃/CoS₂ composite via <em>ex situ</em> XRD and TEM, high-performance SIBs with heterostructure bimetallic sulfide anodes may be a prospective strategy.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"248 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of EDOT Contribution on The Electrochromic and Capacitive Properties of EDOT-Carbazole Based Electrochromic Polymer: Electrochromic and Supercapacitor Device Applications","authors":"Emine Gul CANSU ERGUN, Ahmet M. ÖNAL","doi":"10.1016/j.electacta.2024.145379","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145379","url":null,"abstract":"3,4-ethylenedioxythiophene (<strong>EDOT</strong>) based donor-acceptor-donor (DAD) type conjugated polymers generally have extraordinary electrochromic properties due to the excellent nature of the EDOT unit. This work investigates the electrochromic properties of such a system; EDOT-Carbazole-EDOT (<strong>ECE</strong>) based DAD type of conjugated polymer. Electrochemically synthesized homopolymer film (<strong>PECE</strong>) showed multichromic behavior with excellent optical properties such as 34 % of optical contrast, subsecond switching response (0.96 s at 478 nm), high coloration efficiency (519 cm²/C at 478 nm) and remarkable specific capacitance (3.04 F/cm²). Inserting more <strong>EDOT</strong> units into the polymer matrix of <strong>PECE</strong> via electrochemical synthesis altered the spectral and capacitive behaviors of the resulting copolymers. 2:1 (<strong>ECE:EDOT</strong>) feeded copolymer exhibited better electrochromic performance than equal feeded copolymer. On the other hand, the capacitive range and capacitance stability were significantly enhanced as the <strong>EDOT</strong> unit increased in the copolymer matrix.<strong>PECE</strong> and its copolymers were used to construct dual-type electrochromic devices with poly(3, 4-ethylenedioxythiophene) (<strong>PEDOT</strong>). ECDs of <strong>PECE</strong> and copolymers exhibited superior stability upon many switchings, with subsecond switching responses. Furthermore, ECDs can be switched effectively even at the scan rate of 500 mV/s without any loss in charge/discharge amounts. Finally, electrochromic supercapacitor device applications were performed, and a 1.5 V-LED was lighted for up to 25 seconds with the copolymer supercapacitor device.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"31 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulating the local charge distribution in NiCo2O4@CoWO4 anode materials for hybrid asymmetric supercapacitors","authors":"Jiangchuan Liu, Xijuan Xuan, Yi Yu, Qiaowen Li, Wenchang Wang, Zhidong Chen, Changhai Liu","doi":"10.1016/j.electacta.2024.145381","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145381","url":null,"abstract":"A desirable material with high surface area and optimized electronic properties is urgently required to boost the supercapacitors performance. Herein, we develop a hierarchical heterogeneous electrode material of NiCo₂O₄@CoWO₄/NF with nano-needles combined core-shell structure. This hierarchical heterogeneous electrode material features optimized interface charge distribution, which improves the electron transfer rate and storage density. In addition, we propose a mechanism concerning that the heterogeneous interface improves the surface electron delocalization to enhances the hydroxyl adsorption energy. The hydroxyl adsorption energy is increased from 0.95 eV to 1.13 eV in the presence of NiCo₂O₄@CoWO₄ heterogeneous interface. As a result, the reaction kinetics between the electroactive center of NiCo₂O₄ and the collector is enhanced under the strong interfacial coupling of CoWO₄, a specific capacity as high as 1624 C g⁻¹ (with a current density of 1 A g⁻¹), and an energy density of 88.38 Wh kg⁻¹ (with a power density of 884.78 W kg⁻¹) with a wide voltage window of 0-1.7 V. In addition, it also shows surprising cycling stability with 98% capacity retention after 10,000 cycles at a current density of 10 A g⁻¹. This work provides a new strategy for optimizing the surface and interfacial electronic properties of heterostructure materials.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"17 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel NiCoMn MOFs/Ag Citrate Nanocomposites for High-Performance Asymmetric Supercapacitor Applications","authors":"Mohsin Ali Marwat, Muhammad Fawad Khan, Muhammad Humayun, Saad Ali, Muhammad Ramzan Abdul Karim, Syed Shaheen Shah, Mohamed Bououdina, Zia Ud Din, Kanwar Muhammad Adam, Syed Muhammad Abdullah","doi":"10.1016/j.electacta.2024.145373","DOIUrl":"https://doi.org/10.1016/j.electacta.2024.145373","url":null,"abstract":"Addressing the challenges posed by the global energy crisis, this research article explores the pivotal role of novel NiCoMn MOFs/Ag Citrate Nanocomposites in advancing high-performance asymmetric supercapacitor applications. This study delves into the synthesis of an efficient supercapacitor electrode material using a nanocomposite, denoted as MA_x (where <em>x</em>=1-3), combining NiCoMn metal-organic frameworks (MOFs, represented as M) with Ag-Citrate (notated as A). This synthesis employs an ultrasonication-assisted solvothermal approach. The XRD and SEM analyses authenticate the presence of anticipated phases and elements, revealing a seamless integration of the two components. Electrochemical assessments suggest that introducing Ag-citrate significantly augments the charge storage prowess of the nanocomposites. Specifically, the MA₁ nanocomposite showcases a remarkable specific capacity of 762 C/g at 0.5 Ag⁻¹, marking enhancements of 83% and 10% compared to pure Ag-citrate and unaltered MOFs, respectively. Furthermore, the asymmetric supercapacitor device based on this nanocomposite delivers optimal metrics: a specific capacity of 291.6 C/g at 2 Ag⁻¹, an energy density of 61Whkg⁻¹, a power density of 1500 Wkg⁻¹, a Coulombic efficiency of 98.5%, and an enduring stability of 101% over 4000 cycles. This exploration accentuates the significant promise of NiCoMn MOFs/Ag-Citrate nanocomposites as efficient, economical, and durable supercapacitors for a spectrum of energy storage needs.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"34 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}