Journal of Electroanalytical Chemistry最新文献

{"title":"A BN-rGO modified separator enabling synergistic shuttle suppression toward high-mass-loading aqueous zinc‑iodine batteries","authors":"Yi Zhang ,&nbsp;Hongcheng Xu ,&nbsp;Churen Wang ,&nbsp;Ziqiang Li ,&nbsp;Gongyuan Zhao ,&nbsp;Dengfeng Yu ,&nbsp;Chunxia Chen","doi":"10.1016/j.jelechem.2026.119844","DOIUrl":"10.1016/j.jelechem.2026.119844","url":null,"abstract":"<div><div>Aqueous zinc‑iodine batteries (AZIBs) stand out as promising next-generation energy storage devices due to their cost-effectiveness and intrinsic safety. However, their practical application is severely hindered by sluggish iodine conversion kinetics, the shuttling effect of polyiodides, and limited achievable iodine mass loading (typically &lt;2 mg cm⁻²). To address these challenges, this work reports a novel modified separator (denoted as BN-rGO@GF) fabricated by coating a glass fiber GF substrate with a porous boron nitride-reduced graphene oxide (BN-rGO) composite. The BN-rGO layer endows the separator with dual physical adsorption and chemical catalytic capabilities: it effectively immobilizes soluble polyiodides to suppress the shuttle effect while accelerating the redox conversion kinetics of iodine species. Consequently, the AZIBs utilizing BN-rGO@GF as the separator deliver an ultrahigh discharge capacity (208.7 mAh g⁻¹ at a current density of 0.1 A g⁻¹) and maintain an excellent capacity retention rate of up to 85% over 2600 cycles. Notably, an outstanding capacity of 141.9 mAh g⁻¹ is achieved even at an ultrahigh mass loading of 15 mg cm⁻², demonstrating remarkable potential for practical application. This work provides an effective design strategy for modified separators and offers new insights into advancing high-performance AZIBs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1005 ","pages":"Article 119844"},"PeriodicalIF":4.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultralong-life zinc-ion batteries enabled by a multifunctional aqueous electrolyte additive","authors":"Wenhui Zhang ,&nbsp;Rong Zhong ,&nbsp;Jiake Li ,&nbsp;Hedong Jiang ,&nbsp;Xin Liu ,&nbsp;Pingchun Guo ,&nbsp;Hua Zhu ,&nbsp;Yanxiang Wang","doi":"10.1016/j.jelechem.2026.119832","DOIUrl":"10.1016/j.jelechem.2026.119832","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) have emerged as a leading option in energy storage devices. However, issues such as the solvation structure of [Zn (H₂O) ₆]²⁺, water-rich interfaces, and interface instability have led to hydrogen evolution reactions (HER), corrosion, and dendrite growth, hindering their application and development. In this paper, the conventional ZnSO₄ electrolyte was modified using 3-aminopropionitrile fumarate (3-Af) as an additive. Experimental and theoretical calculation results indicate that the carboxyl groups in 3-Af strongly interact with H₂O, accelerating the desolvation process of Zn²⁺ and reducing the occurrence of active water decomposition. Additionally, 3-Af adsorbed onto the zinc anode surface forms a stable interface layer and regulates Zn²⁺ flux to achieve uniform deposition, thereby effectively inhibiting dendrite formation. Under the synergistic mechanism, the Zn//Zn symmetric battery assembled with the 3-Af-containing electrolyte (10 mM) exhibits the stable cycling for 2540 h and 810 h at current densities of 1.0 mA cm⁻² and 5.0 mA cm⁻², respectively, which are 22 and 30 times than those of the Zn//Zn symmetric battery with ZnSO₄ electrolyte, respectively. The Zn//Ti asymmetric battery with the 3-Af-containing electrolyte (10 mM) has the stable cycling 670 cycles at 1.0 mA cm⁻², which is nearly 30 times higher than that with ZnSO₄ electrolyte. The Zn//I₂ battery with the 3-Af-containing electrolyte (10 mM) achieves a specific capacity of 172.8 mAh g⁻¹ at a current density of 0.2 A g⁻¹, whereas the specific capacity is 140.0 mAh g⁻¹with ZnSO₄ electrolyte. Moreover, the Zn//I₂ battery with the 3-Af-containing electrolyte (10 mM) shows the specific capacity rate of 77.1% after 10,000 cycles at 5.0 mA cm⁻², which increases by 17.8% than that with ZnSO₄ electrolyte. Therefore, this work paves a new way for the development of low-cost and long-life AZIBs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1005 ","pages":"Article 119832"},"PeriodicalIF":4.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extended lifetime of Prussian blue based (bio)sensors through recalibration by square-wave voltammetry","authors":"Vita N. Nikitina ,&nbsp;Vladislav M. Pleshakov ,&nbsp;Svetlana I. Gainanova ,&nbsp;Yaroslav Y. Dudin ,&nbsp;Arkady A. Karyakin","doi":"10.1016/j.jelechem.2026.119872","DOIUrl":"10.1016/j.jelechem.2026.119872","url":null,"abstract":"<div><div>We report that periodic run of dynamic voltammetry upon potentiostatic operation allows recalibration of Prussian Blue (PB) based (bio)sensors. Being the most advantageous electrocatalyst for H₂O₂, PB suffers from solubilization by the product of its reduction, hydroxyl ion (OH¯). Square-wave voltammograms, minimally affected by the catalyzed reaction, can be recorded directly in the analyzed medium and provide prediction of the (bio)sensor sensitivity in course of its decrease down to 10–15%. Since the intrinsic sensitivity of Prussian Blue is rather high and such its loss does not hamper applicability of the corresponding (bio)sensors, the proposed recalibration allows to extend their lifetime several times avoiding interruption of continuous monitoring.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1005 ","pages":"Article 119872"},"PeriodicalIF":4.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical behaviour of NAD+/NADH at carbon macro-, micro-, and rotating-disk electrodes: Degradation kinetics by time-resolved voltammetry","authors":"Phonthakorn Monthathong ,&nbsp;Tharinda Kasemphong ,&nbsp;Pattarawadee Therdkatanyuphong ,&nbsp;Jinnapat Wijitsak ,&nbsp;Tanatorn Khotavivattana ,&nbsp;Kamonwad Ngamchuea","doi":"10.1016/j.jelechem.2026.119848","DOIUrl":"10.1016/j.jelechem.2026.119848","url":null,"abstract":"<div><div>The electrochemical behaviour of nicotinamide adenine dinucleotide (NAD⁺ and NADH) was evaluated at carbon electrodes under three mass transport regimes: stationary macrodisc (planar diffusion), stationary microdisk (hemispherical diffusion), and rotating-disk (forced convection). Comparison of these regimes reveals how the apparent NAD⁺/NADH voltammetric response is transport-dependent, reflecting competition between interfacial kinetics and follow-up chemistry. Compared to transient macrodisk voltammetry, steady-state microdisk voltammetry delivered superior analytical performance, with linear ranges of 0.02–1.00 mM (NAD⁺) and 0.007–1.00 mM (NADH); sensitivities of 0.49 ± 0.01 nA mM⁻¹ (NAD⁺) and 0.85 ± 0.01 nA mM⁻¹ (NADH), and limits of detection (3S_B/m) of 7 μM (NAD⁺) and 2 μM (NADH). Hydrodynamic voltammetry revealed sluggish NAD⁺ reduction (<span><math><msup><mi>k</mi><mn>0</mn></msup></math></span> = 4.35 × 10⁻⁹ ± 0.09 × 10⁻⁹ m s⁻¹) and much faster NADH oxidation (<span><math><msup><mi>k</mi><mn>0</mn></msup></math></span> = 1.68 × 10⁻² ± 0.04 × 10⁻² m s⁻¹). Time-resolved voltammetry enabled reagent-free kinetic monitoring of NADH degradation in acids, which showed apparent first-order behaviour with respect to both NADH and H⁺ (rate ∝ [NADH][H⁺]; overall second order), giving a pseudo-first-order half-life <em>t</em>_1/2 ≈ 14 min at 298 K and pH 3.5, with an activation energy of 82 kJ mol⁻¹. UV–vis spectroscopy corroborated the electrochemical rates and ¹H, ¹³C, COSY, HSQC, and HMBC NMR identified cyclic-NADH formed via non-oxidative ring formation as the principal product, while NAD⁺ remains chemically stable. These findings provide mechanistic insight into non-enzymatic NADH decomposition in mildly acidic environments relevant to pharmaceutical formulation, gut absorption, and redox biology.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1005 ","pages":"Article 119848"},"PeriodicalIF":4.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lithium-rich Li₁.₂Mn₀.₅₄Ni₀.₁₃Co₀.₁₃O₂ as a high-efficiency cathode pre-lithiation agent for silicon-based lithium-ion batteries","authors":"Zhenpeng Liu,&nbsp;Wenping Liu,&nbsp;Guisheng Zhu,&nbsp;Weichao Zhang,&nbsp;Shicheng He,&nbsp;Ziming Zheng,&nbsp;Yougui Xu,&nbsp;Huarui Xu,&nbsp;Yunyun Zhao,&nbsp;Kunpeng Jiang","doi":"10.1016/j.jelechem.2026.119839","DOIUrl":"10.1016/j.jelechem.2026.119839","url":null,"abstract":"<div><div>A novel chemical pre-lithiation method for the supplemented lithium-deficient NCM523 | Gr-Si@C full battery system is achieved by adding a small amount of lithium-rich manganese-based material Li₁.₂Mn₀.₅₄Ni₀.₁₃Co₀.₁₃O₂(LMNCO) in the cathode material to improve the loss of active lithium ions (Li⁺) during the cycle process. Spherical LMNCO particles were synthesized via a solvothermal method, serving as a lithium-supplementing cathode additive. This material exhibits a charge capacity of 279.93 mAh/g and a reversible capacity of 140.25 mAh/g, corresponding to an irreversible pre-lithiation capacity of 139.68 mAh/g. During the initial formation of the solid electrolyte interphase (SEI) layer, lithium-ion loss is not only compensated for by the active lithium ions released from LMNCO, but the formation of a stable, lithium fluoride-rich SEI layer is also promoted. This robust SEI layer effectively suppresses electrolyte decomposition and mitigates volume expansion of silicon-based anodes.When 10 wt% LMNCO is incorporated into the NCM523 cathode, the full cell assembled with a Gr-Si@C anode exhibits an initial discharge specific capacity of 195.49 mAh/g—20.05 mAh/g higher than that of the non-pre-lithiated NCM523|Gr-Si@C full cell. After 200 cycles at 0.5C, the modified cell maintains a capacity retention of 67.53% and shows a 33.4% increase in energy density compared with the non-pre-lithiated control.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1005 ","pages":"Article 119839"},"PeriodicalIF":4.1,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfur doped graphitic carbon nitride composite with zinc oxide for electrochemical determination of hydrazine","authors":"Alemnesh Bekele ,&nbsp;Fuad Abduro Bushira ,&nbsp;Alemayehu Yifru ,&nbsp;Tadesse Haile Fereja ,&nbsp;Shimeles Addisu Kitte","doi":"10.1016/j.jelechem.2026.119821","DOIUrl":"10.1016/j.jelechem.2026.119821","url":null,"abstract":"<div><div>Hydrazine (HZ) is highly toxic and widely used in chemical industry which causes environmental pollution and even has negative impact to human health. The main objective of the study was to synthesize Sulfur doped graphitic carbon nitride (S-g-CN) and ZnO nanoparticles (NPs) for electrochemical detection of HZ. The S-g-CN/ZnO was prepared via sol gel-polymerization method. The synthesized material was characterized by techniques such as Ultraviolet-Visible (UV–Vis), X-ray diffraction (XRD), X-ray photoelectron (XPS), Fourier-transform infrared (FT-IR) and scanning electron microscopy (SEM) analysis. The S-g-CN/ZnO material combines the unique properties of S- g-C₃N₄ and ZnO to enhance the electrochemical performance for HZ detection. ZnO, known for its excellent electrochemical properties and stability, further enhances the detection sensitivity of the composite. The electrochemical performance of S-g-CN modified glassy carbon electrode (S-g-CN/GCE) and ZnO modified glassy carbon electrode (ZnO/GCE) were evaluated for HZ detection, comparing it to a bare GCE. Results demonstrate that the S-g-CN/ZnO nanocomposites (NCs) significantly improved the electrochemical detection of HZ, exhibiting enhanced sensitivity and selectivity compared to individual S-g-CN, ZnO, or the bare GCE. This improvement is attributed to the synergistic effect of sulfur doping and the composite formation, which increased the surface area, facilitated electron transfer, and provided more active sites, using square wave voltammetry (SWV) and showed a relatively low detection limit 0.083 μM (3σ/m) with a linear range of 0.250 μM to 80 μM and good sensitivity. Overall, S-g-CN/ZnO NCs is a suitable material for low-cost detection of HZ.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1004 ","pages":"Article 119821"},"PeriodicalIF":4.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Poly(vinylidene fluoride-co-hexafluoropropylene)/ionic liquid/polydopamine-modified metal-organic framework composite polymer electrolytes for lithium-ion batteries","authors":"Juan Wu,&nbsp;Xiaoran Ren,&nbsp;Kai Huang,&nbsp;Bencai Lin","doi":"10.1016/j.jelechem.2026.119806","DOIUrl":"10.1016/j.jelechem.2026.119806","url":null,"abstract":"<div><div>This study develops composite polymer electrolytes (CPEs) by incorporating polydopamine-modified ZIF-8 (PDA@ZIF-8) and an ionic liquid (IL), 1-butyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide ([BMIM][TFSI]), into poly(vinylidene fluoride-<em>co</em>-hexafluoropropylene) (PVDF-HFP) matrices to reduce interfacial resistance and enhance battery stability. Leveraging ZIF-8's nanoporous structure, PDA's adhesion properties, and synergistic PDA-PVDF-HFP interactions, the PDA@ZIF-8 filler achieves uniform dispersion while preserving its integrity and improving polymer-filler compatibility. Compared to CPEs without PDA@ZIF-8 (ionic conductivity: 1.66 × 10⁻⁴ S cm⁻¹ at 25 °C), those containing an optimal amount of PDA@ZIF-8 exhibit significantly higher conductivity. Specifically, the PH/[email protected] membrane achieves a conductivity of 2.09 × 10⁻⁴ S cm⁻¹ at 25 °C. Furthermore, PDA@ZIF-8 incorporation substantially enhances the CPEs' mechanical properties. Owing to the excellent Li-salt dissociation capabilities of both the IL and PDA@ZIF-8, the PH/[email protected] membrane demonstrates a high Li⁺ transference number of 0.54. Li|PH/[email protected]|Li symmetric cells maintain a low steady-state overpotential for over 600 h. Moreover, LiFePO₄|PH/[email protected]|Li batteries deliver a discharge capacity of 132 mAh g⁻¹ and retain over 98 % capacity after 100 cycles under 0.1C at 25 °C, highlighting their strong potential for lithium-ion battery applications. This work provides an effective strategy for preparing high-performance CPEs that enhance lithium-ion battery performance.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1004 ","pages":"Article 119806"},"PeriodicalIF":4.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trace Ni doping-enhanced capacitive WO3 electrode for high-energy-density asymmetric supercapacitors","authors":"Weifeng Zhang ,&nbsp;Jiasheng Huang ,&nbsp;Yu Li ,&nbsp;Yuan Yao ,&nbsp;Jiawei Zhang ,&nbsp;Minghua Chen","doi":"10.1016/j.jelechem.2026.119829","DOIUrl":"10.1016/j.jelechem.2026.119829","url":null,"abstract":"<div><div>High-capacitance capacitive-type electrodes are essential for achieving high energy density in asymmertric supercapacitor. Herein, a trace Ni doping strategy is proposed to improve energy storage performance of the capacitive-type octahedral WO₃ electrode. The Ni doped WO₃ electrode with a 4% doping concentration exhibits the optimal energy storage performance, with an superior areal specific capacitance of 4206 mF cm⁻² at 10 mA cm⁻², significantly higher than that of pure WO₃ (910 mF cm⁻²). The significantly enhanced capacitance resulting from Ni doping may be attributed to the highly symmetric octahedral crystal structure of WO₃, which readily activates Jahn-Teller effects, thereby effectively altering the electronic structure and improving electrochemical performance. To explore the practical potential of the Ni doped WO₃, the asymmetric supercapacitor using polypyrrole as the counter electrode is assembled and achieves a maximum capacitance of 313.8 mF cm⁻², corresponding to the energy density of 72.3 μWh cm⁻² at a power density of 2.6 mW cm⁻². This work highlights the relationship between cation doping and crystal structure, offering a promising strategy to enhance the electrochemical performance of capacitive-type electrodes.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1004 ","pages":"Article 119829"},"PeriodicalIF":4.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145950401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MXene-integrated rare-earth high-entropy oxide nanocomposites for advanced supercapacitor applications","authors":"Piyush V. Patil ,&nbsp;P.E. Lokhande ,&nbsp;Vilas Kumkale ,&nbsp;Dadaso D. Mohite ,&nbsp;M.A. Kadam ,&nbsp;Syed Khasim ,&nbsp;Taymour A. Hamdalla ,&nbsp;Deepak Kumar ,&nbsp;Udayabhaskar Rednam","doi":"10.1016/j.jelechem.2026.119803","DOIUrl":"10.1016/j.jelechem.2026.119803","url":null,"abstract":"<div><div>In this study, rare-earth high-entropy oxides (RE-HEO, (Ce₀.₂La₀.₂Pr₀.₂Y₀.₂Sm₀.₂)O_{₂-<em>δ</em>} and Ti₃C₂Tₓ MXene nanocomposite was synthesized through a hydrothermal process followed by annealing to fabricate advanced electrode materials for supercapacitor applications. While RE-HEOs possess significant promise for energy storage, their performance is often limited by low electrical conductivity. This limitation was effectively overcome by integrating highly conductive MXene sheets. Structural and morphological analyses verified the successful formation of the RE-HEO framework and its stable composite with MXene. Electrochemical evaluation revealed that the RE-HEO–MXene electrode delivered a specific capacity of 405C g⁻¹ at 1 A g⁻¹, along with excellent rate capability and long-term cycling stability. Moreover, a solid-state RE-HEO–MXene//AC asymmetric supercapacitor achieved an energy density of 13.97 Wh kg⁻¹ at a power density of 13,750 W kg⁻¹, while maintaining 93 % of its capacitance after 10,000 cycles. These findings emphasize the synergistic contribution of MXene in improving conductivity, surface area, and electrochemical performance of RE-HEO, underscoring its strong potential for next-generation energy storage devices.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1004 ","pages":"Article 119803"},"PeriodicalIF":4.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145950402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial synapses with electrochromic optically responsive for signal recognition","authors":"Xueqi Chen,&nbsp;Junsong Peng,&nbsp;Manyao Wang,&nbsp;Shuran Liao,&nbsp;Yang Chen,&nbsp;Zongyu Huang,&nbsp;Xiang Qi","doi":"10.1016/j.jelechem.2026.119825","DOIUrl":"10.1016/j.jelechem.2026.119825","url":null,"abstract":"<div><div>To address the energy efficiency bottlenecks and serial processing delays inherent in the von Neumann architecture, this study developed an artificial synapse based on the classic inorganic electrochromic material tungsten trioxide (WO₃). Unlike traditional electrical signal reading schemes, this device achieves reversible transmittance modulation through voltage-controlled ion insertion/extraction, directly utilizing optical responses to simulate key biological synapse plasticity phenomena such as paired pulse facilitation (PPF) and dynamic short-term/long-term plasticity conversion. By combining recurrent neural networks (RNN) to extract and recognise transmission response features, the device successfully achieved high-precision recognition of 26 English letters encoded by optical pulses, with an accuracy rate of 95.83%. This work highlights the potential of electrochromic devices for achieving high-performance neuromorphic computing, offering a novel approach to overcoming the von Neumann bottleneck.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"1004 ","pages":"Article 119825"},"PeriodicalIF":4.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}