Journal of Solid State Electrochemistry最新文献

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K-doped Li2FeTiO4 cathode with enhanced structural stability for lithium-ion batteries 增强结构稳定性的k掺杂Li2FeTiO4锂离子电池阴极
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-16 DOI: 10.1007/s10008-025-06320-2
Peng-qing Hou, Yingdong Qu, Rui Huang, Xinru Tian, Guanglong Li, Shaohua Luo
{"title":"K-doped Li2FeTiO4 cathode with enhanced structural stability for lithium-ion batteries","authors":"Peng-qing Hou,&nbsp;Yingdong Qu,&nbsp;Rui Huang,&nbsp;Xinru Tian,&nbsp;Guanglong Li,&nbsp;Shaohua Luo","doi":"10.1007/s10008-025-06320-2","DOIUrl":"10.1007/s10008-025-06320-2","url":null,"abstract":"<div><p>Li<sub>2</sub>FeTiO<sub>4</sub> cathode has emerged as a promising option for lithium-ion batteries because of its outstanding capacity and eco-friendly properties. However the abominable conductivity and ion transports hindered its electrochemical performance. In this work, (Li<sub>1-x</sub>K<sub>x</sub>)<sub>2</sub>FeTiO<sub>4</sub> (LiFT-Kx, <i>x</i> = 0 and 0.01) cathode materials with were successfully synthesized. Remarkably, there was a notable improvement in the properties of interlayer spacing, ionic conductivity and kinetics. As a result, LiFT-K0.01 cathode expressed splendid initial capacitance (108.8 mAh g<sup>−1</sup>, 0.05 C), stability (82.9% over 30 cycles), and rate performance (89.8 mAh g<sup>−1</sup>, 82.4% of the original values). This work might provide valuable insights for the exploration of lithium storage with excellent long-term stability, and it might open new possibilities for the development of advanced energy storage technologies based on lithium-ion batteries.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4407 - 4416"},"PeriodicalIF":2.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual-functional monomers in molecularly imprinted polymer synthesis for electrochemical detection of bisacodyl in biological samples based on lab-made screen-printed carbon electrode 基于实验室制作的丝网印刷碳电极的双功能分子印迹聚合物合成及其在生物样品中bisacodyl的电化学检测
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-16 DOI: 10.1007/s10008-025-06303-3
Azizollah Nezhadali, Anousheh Badameh
{"title":"Dual-functional monomers in molecularly imprinted polymer synthesis for electrochemical detection of bisacodyl in biological samples based on lab-made screen-printed carbon electrode","authors":"Azizollah Nezhadali,&nbsp;Anousheh Badameh","doi":"10.1007/s10008-025-06303-3","DOIUrl":"10.1007/s10008-025-06303-3","url":null,"abstract":"<div><p>In this study, the utilization of two monomers, specifically pyrrole (PY) and thiophene (TH), was investigated for the synthesis of dual-monomer molecularly imprinted polymer (DMMIP) used in the electrochemical detection of bisacodyl (BIS) in biological samples. To examine the impact of each monomer individually and in combination on the formation of DMMIP, a density functional theory (DFT) approach was utilized. This calculation was employed to enhance the selectivity of the MIP towards the target molecule BIS. The DMMIP was electropolymerized using cyclic voltammetry (CV) of monomers and template on a lab-made screen-printed carbon electrode (SPCE) that had been modified with graphene oxide (GO). Differential pulse voltammetry (DPV) was then utilized for the accurate determination of BIS levels. The influencing factors in the DMMIP synthesis, such as the PY to BIS ratio, the TH to BIS ratio, pH, scan rate, and the number of scans, were optimized using a Taguchi array. In addition, other parameters such as the stirring rate, loading time, and the amount of GO were analyzed using the one-factor-at-a-time (OFAT) approach. Under optimized conditions, the sensor demonstrated a linear dynamic range from 0.1 to 1000 µM (<i>R</i><sup>2</sup> = 0.9984) with limits of detection and quantification of 0.063 µM (S/N = 3) and 0.21 µM (S/N = 10), respectively. The sensor also exhibited good repeatability and reproducibility, with relative standard deviations (RSD) of 1.4% and 2.7%, respectively. Moreover, this sensor successfully detected BIS in real samples and showed a good agreement with high-performance liquid chromatography (HPLC) results.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4417 - 4429"},"PeriodicalIF":2.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of chemical etching and dissolution valence criterion for surface texturing of porous silicon 化学蚀刻和溶解价准则在多孔硅表面织构中的作用
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-15 DOI: 10.1007/s10008-025-06308-y
Fuguo Wang, Xingkai Zhang
{"title":"Role of chemical etching and dissolution valence criterion for surface texturing of porous silicon","authors":"Fuguo Wang,&nbsp;Xingkai Zhang","doi":"10.1007/s10008-025-06308-y","DOIUrl":"10.1007/s10008-025-06308-y","url":null,"abstract":"<div><p>Capillary-driven surface texturing (CDST) of porous silicon (PSi) plays a critical role in constructing silicon-based special wetting surfaces, particularly in controlling the surface structure and wettability of PSi films. Electrochemical etching is widely recognized for its role in PSi formation, while the contribution of chemical etching during this process is often overlooked, which is essential for CDST. In this study, superhydrophobic PSi surfaces with biomimetic structures were fabricated through a combination of electrochemical etching of silicon, CDST of resulting PSi film, and surface modification with <i>1</i>-octadecene. The surface structures, wettabilities, effective dissolution valences (EDVs), effective dissolution factors (EDFs), and porosities of PSi films were systematically analyzed. The results reveal that chemical etching is crucial for CDST, as it influences the resulting surface structures and wettabilities by increasing film porosities and creating gradient variations. Based on the intensity of chemical etching and the characteristics of surface structures, the pore-forming region can be categorized into three distinct zones: A CE (chemical etching)-severe region, B surface-texturing region (moderate chemical etching), and C EE (electrochemical etching)-dominating region. CDST primarily occurs in the surface-texturing region, where chemical etching, EDVs, and EDFs fall into the range of 15–25%, 1.5–1.7, and 75–85%, respectively. These results suggest that both EDVs and EDFs can serve as reliable evaluation criteria for CDST of PSi, offering a more precise and professional alternative to current density measurements. Moreover, EDVs and EDFs may also be utilized as control parameters in future applications of such an intriguing phenomenon.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4389 - 4397"},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon fabric electrodes obtained by pyrolysis in benzaldehyde vapor for the deposition of polypyrrole-coated gold nanoparticles 在苯甲醛蒸气中热解制备了用于沉积聚吡咯包覆金纳米粒子的碳织物电极
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-14 DOI: 10.1007/s10008-025-06312-2
Renata V. Lima, Camilla K. Boaron, Tatiana L. Valerio, Mayara R. Fornari, Antonio S. Mangrich, Marcio Vidotti, Bruna M. Hryniewicz
{"title":"Carbon fabric electrodes obtained by pyrolysis in benzaldehyde vapor for the deposition of polypyrrole-coated gold nanoparticles","authors":"Renata V. Lima,&nbsp;Camilla K. Boaron,&nbsp;Tatiana L. Valerio,&nbsp;Mayara R. Fornari,&nbsp;Antonio S. Mangrich,&nbsp;Marcio Vidotti,&nbsp;Bruna M. Hryniewicz","doi":"10.1007/s10008-025-06312-2","DOIUrl":"10.1007/s10008-025-06312-2","url":null,"abstract":"<div><p>Flexible electrodes have attracted significant interest in the development of different electrochemical systems, especially in energy storage devices development. In this context, flexible supercapacitors are attracting attention by offering mechanical flexibility, light weight and optimal energy, and power densities to meet the demands of future innovations in wearable technology, smart textiles, and other flexible electronic applications. Nonetheless, effectively uniting low-cost electrode production with high performance is still a challenge. In this work, a new substrate based on pyrolyzed cotton fabric was developed using an atmosphere of N<sub>2</sub> with benzaldehyde vapor during the pyrolysis process. The process resulted in the formation of a conductive fabric with graphitic characteristics, including high conductivity, as demonstrated by the reduction in sheet resistance from 2949 ± 2728 Ω sq<sup>−1</sup> (measured in pyrolysis without benzaldehyde vapor) to 174 ± 67 Ω sq<sup>−1</sup>, in the pyrolysis process conducted with the atmosphere modifier. The fabric also exhibited a hydrophobic surface, with a mean contact angle of 118° ± 2, and featured interconnected fibers of untreated cotton. To enhance the electrochemical properties of the material, a simple methodology for one-pot chemical synthesis of AuNPs@PPy was proposed, where pyrrole monomer was used as the reducing agent, forming AuNPs capped by PPy with a mean diameter of 7 ± 2 nm. The material was characterized by scanning electron microscopy and transmission electron microscopy images, elemental mapping, Fourier-transform infrared spectroscopy, and electrochemical methods. The presence of the composite improved the specific capacitance of the electrode, obtaining a value of 30.4 mF cm<sup>−2</sup> at a current density of 0.25 mA cm<sup>−2</sup>, presenting a forward-looking perspective on harnessing cotton fabric residues to construct eco-friendly high-performance devices, especially in supercapacitors development.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4377 - 4387"},"PeriodicalIF":2.6,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anion engineering of Na3V2(PO4)2F3 nanosheets coexisting with OCNTs for high performance in sodium-ion batteries Na3V2(PO4)2F3纳米片与ocnt共存的阴离子工程研究
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-14 DOI: 10.1007/s10008-025-06301-5
Wenjun Luo, Chuanlong Ji, Chuanyang Li, Xinyue Zhang, Huaxu Gong, Zhongcheng Song, Wutao Mao, Keyan Bao
{"title":"Anion engineering of Na3V2(PO4)2F3 nanosheets coexisting with OCNTs for high performance in sodium-ion batteries","authors":"Wenjun Luo,&nbsp;Chuanlong Ji,&nbsp;Chuanyang Li,&nbsp;Xinyue Zhang,&nbsp;Huaxu Gong,&nbsp;Zhongcheng Song,&nbsp;Wutao Mao,&nbsp;Keyan Bao","doi":"10.1007/s10008-025-06301-5","DOIUrl":"10.1007/s10008-025-06301-5","url":null,"abstract":"<div><p>Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> (NVPF) is an emerging positive electrode material for polyanionic sodium-ion batteries (SIBs) and is distinguished by its Tavorite structure. This material exhibits considerable promise for large-scale energy storage and cost-effective battery applications, owing to its low cost, enhanced safety, and rapid charge/discharge capabilities. The present study introduces the composite material Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub>/OCNTs (NVPF/OCNTs) which integrates oxidized carbon nanotubes (OCNTs). The nanosheet structure was synthesized using one-step hydrothermal method. Physical characterization and electrochemical evaluations reveal that the incorporation of OCNTs with NVPF promotes an efficient electron transfer pathway at high current densities. The NVPF/OCNTs composite demonstrates rapid ion and electron transport along with exceptional structural stability. The specific discharge capacities observed were 128.8, 127.3, 121.1, 115.8, 90.1, and 62.4 mAh g<sup>−1</sup> at current rates of 0.1, 0.5, 1, 2, 5, and 10 C. The capacity retention rate under a 2 C charge–discharge condition is recorded at 97.7% after 200 cycles. The specific discharge capacity of the NVPF/OCNTs half-cell, following 1000 cycles at a 10 C rate declines from 62.4 to 55.1 mAh g<sup>−1</sup>, yielding a capacity retention rate of 88.9%. These results highlight the outstanding rate performance and cycling stability of the composite material.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4367 - 4375"},"PeriodicalIF":2.6,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Are redox catalytic reaction rates accelerated in microdroplets on electrode surfaces? 电极表面微滴中的氧化还原催化反应速率是否加快?
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-12 DOI: 10.1007/s10008-025-06283-4
Nathan S. Lawrence, Jay D. Wadhawan
{"title":"Are redox catalytic reaction rates accelerated in microdroplets on electrode surfaces?","authors":"Nathan S. Lawrence,&nbsp;Jay D. Wadhawan","doi":"10.1007/s10008-025-06283-4","DOIUrl":"10.1007/s10008-025-06283-4","url":null,"abstract":"<div><p>Homogeneous redox catalysis within electrochemically supported microdroplets immobilised on an electrode surface and bathed by an immiscible electrolyte solution is characterised using finite difference numerical methods, after conformal transformation of the physical problem. This is shown to be a challenging environment to simulate and model, not least due to the confinement of the heterogeneous electron transfer to the droplet/support/electrolyte boundary, and hence leading to acute convergent/divergent diffusion regimes. Reactivity at the triple phase boundary underpins both the spatial and temporal non-uniformity of the reacting droplet environment. Crucially, through comparison with experimental data reported in the literature, it is demonstrated that <i>there is no droplet-induced acceleration of the redox catalytic reaction.</i> Reasons for this discrepancy with literature are suggested. It is recommended that any inference of reaction rate acceleration through increased rate constants in microdroplets on surfaces be re-examined, lest the multi-dimensional dynamics at the three-phase boundary are unaccounted.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2321 - 2334"},"PeriodicalIF":2.6,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-025-06283-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sustainable hydrogen peroxide sensors: integrating 3D printing with battery recycling 可持续过氧化氢传感器:将3D打印与电池回收相结合
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-11 DOI: 10.1007/s10008-025-06306-0
Anupama Shaju, Harinarayanan A, Balasubramanian Kandasubramanian
{"title":"Sustainable hydrogen peroxide sensors: integrating 3D printing with battery recycling","authors":"Anupama Shaju,&nbsp;Harinarayanan A,&nbsp;Balasubramanian Kandasubramanian","doi":"10.1007/s10008-025-06306-0","DOIUrl":"10.1007/s10008-025-06306-0","url":null,"abstract":"<div><p>The growing demand for sustainable and high-performance sensors has driven the development of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) sensing technologies utilizing innovative material combinations. This study developed cutting-edge H<sub>2</sub>O<sub>2</sub> sensors by integrating 3D printing technology and materials like silver nanoparticles, carbon nanotubes, recycled battery powder, and biodegradable polymers such as acrylonitrile butadiene styrene (ABS), polylactic acid (PLA) (5%, 10%), and polyvinyl alcohol (PVA) (5%, 10%). The cyclic voltammetry analysis demonstrated that electrodes with 10% PVA exhibited superior electrocatalytic activity and sensitivity for detecting H<sub>2</sub>O<sub>2</sub> compared to PLA-based electrodes. This innovative approach addresses environmental concerns associated with electronic waste, enhancing sensor durability and electrochemical efficiency.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4281 - 4288"},"PeriodicalIF":2.6,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical performance of the Pr2CuO4-based cathode materials in planar anode-supported IT-SOFCs 平面阳极负载型it - sofc中pr2cuo4基正极材料的电化学性能
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-10 DOI: 10.1007/s10008-025-06309-x
Yu. O. Dobrovolskiy, G. N. Mazo, V. E. Pukha, G. V. Nechaev, N. V. Lyskov
{"title":"Electrochemical performance of the Pr2CuO4-based cathode materials in planar anode-supported IT-SOFCs","authors":"Yu. O. Dobrovolskiy,&nbsp;G. N. Mazo,&nbsp;V. E. Pukha,&nbsp;G. V. Nechaev,&nbsp;N. V. Lyskov","doi":"10.1007/s10008-025-06309-x","DOIUrl":"10.1007/s10008-025-06309-x","url":null,"abstract":"<div><p>Different types of planar anode-supported solid oxide fuel cells (SOFCs) with Pr<sub>2</sub>CuO<sub>4</sub>(PCO)-based cathode materials were fabricated. A vacuum aerosol deposition method was used to form a thin gas-tight electrolyte layer. The influence of the PCO cathode formation on the electrochemical performance and impedance characteristics of the obtained SOFC samples was investigated. It was shown that the fuel cell with bifunctional cathode based on PCO exhibited high power density 265 mW/cm<sup>2</sup> at 800 °C. The impedance spectroscopy results show rather low ohmic losses for the investigated fuel cells. The lowest polarization resistance value (0.43 Ω cm<sup>2</sup> at 800 °C) was obtained for the fuel cell with the bifunctional PCO-based composite cathode. The results obtained allow to consider the PCO-based composite cathode as a promising cathode material for intermediate-temperature SOFCs.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 10","pages":"4355 - 4365"},"PeriodicalIF":2.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Double-layer structure and cation-dependent solvent decomposition in acetonitrile-based electrolytes 乙腈基电解质的双层结构和阳离子依赖溶剂分解
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-08 DOI: 10.1007/s10008-025-06305-1
Pavithra Gunasekaran, Angel Cuesta
{"title":"Double-layer structure and cation-dependent solvent decomposition in acetonitrile-based electrolytes","authors":"Pavithra Gunasekaran,&nbsp;Angel Cuesta","doi":"10.1007/s10008-025-06305-1","DOIUrl":"10.1007/s10008-025-06305-1","url":null,"abstract":"<div><p>We present an analysis of the microscopic structure of the interface between a gold electrode and acetonitrile-based electrolytes, utilising surface-enhanced infrared absorption spectroscopy in attenuated total reflection mode (ATR-SEIRAS) combined with voltammetric data. The investigation focuses on the potential-induced changes in the interactions between interfacial acetonitrile molecules and on the onset of reductive acetonitrile decomposition in Li<sup>+</sup>- and Na<sup>+</sup>-containing electrolytes. The acetonitrile molecules exhibit a potential-dependent reorientation, leading to an increase in the concentration of antiparallel dimers at the interface at negative potentials, as the nitrogen end of the molecule is pushed away from the surface. The initial stages of reductive decomposition of acetonitrile are different in the Li<sup>+</sup>- and Na<sup>+</sup>-based electrolytes. Spectral signatures characteristic of amines are seen in LiClO<sub>4</sub> acetonitrile solutions, while amide bands are also observed in NaClO<sub>4</sub>. Because traces of water in acetonitrile must be the proton source for the reduction of interfacial acetonitrile to amines and amides, OH<sup>−</sup> must also be generated during those processes. In fact, ATR-SEIRA spectra reveal the formation and subsequent precipitation of LiOH. Precipitation of NaOH in NaClO<sub>4</sub> seems to be absent, though. With increasingly negative potential, the reductive cleavage of acetonitrile results in the formation of several cyanide species. The corresponding cyanide-characteristic bands show a potential-dependent stretching frequency that suggests they correspond to adsorbed species. These findings highlight the effect of potential-induced solvent reorientation on solvent–solvent interactions at the interface as well as the impact of the electrolyte cation on the products of the reductive decomposition of acetonitrile.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2213 - 2224"},"PeriodicalIF":2.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-025-06305-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computational and experimental approach to the electromechanical and electrochemical behavior of Pt-reduced IPMC pt还原IPMC机电和电化学行为的计算和实验方法
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2025-04-08 DOI: 10.1007/s10008-025-06304-2
Roger Gonçalves, Evaldo B. Carneiro-Neto, Alex S. Moraes, Thiago Petrilli M. Dardis, Kaique A. Tozzi, Vinícius R. Caetano, Matheus C. Saccardo, Guilherme E. O. Blanco, Ariel G. Zuquello, Rafael Barbosa, Ernesto C. Pereira, Carlos H. Scuracchio
{"title":"Computational and experimental approach to the electromechanical and electrochemical behavior of Pt-reduced IPMC","authors":"Roger Gonçalves,&nbsp;Evaldo B. Carneiro-Neto,&nbsp;Alex S. Moraes,&nbsp;Thiago Petrilli M. Dardis,&nbsp;Kaique A. Tozzi,&nbsp;Vinícius R. Caetano,&nbsp;Matheus C. Saccardo,&nbsp;Guilherme E. O. Blanco,&nbsp;Ariel G. Zuquello,&nbsp;Rafael Barbosa,&nbsp;Ernesto C. Pereira,&nbsp;Carlos H. Scuracchio","doi":"10.1007/s10008-025-06304-2","DOIUrl":"10.1007/s10008-025-06304-2","url":null,"abstract":"<div><p>Ionomeric polymer–metal composites (IPMCs) are advanced smart materials with an ionic-conducting polymer membrane coated with noble metal electrodes. When subjected to an electrical stimulus, an electric field is generated between the electrodes, causing solvated ions to migrate through the polymer membrane and create an internal pressure gradient, which results in the composite bending. However, the high cost of noble metals, such as gold and platinum, and the toxic waste generated during deposition are significant drawbacks. This study compares the electromechanical performance of a Nafion®-based IPMC with a reduced platinum (PR-IPMC) layer to that of a reference IPMC (R-IPMC). Tests were conducted under controlled relative humidity (RH), and blocking force and current response were used to assess performance. Scanning electron microscopy (SEM) was employed to examine the morphology of the platinum layer. The devices demonstrated optimal performance at 90% relative humidity (RH), with the PR-IPMC exhibiting a 60% thinner platinum layer. However, it displayed a 40% reduction in blocking force compared to the R-IPMC. The reduced platinum content results in cost savings and reduced waste production while still providing satisfactory mechanical performance. Theoretical analysis using molecular dynamics and finite element method (FEM) simulations revealed the stress distribution (<i>S</i><sub>Pt</sub>) in the platinum layers as a function of their thickness (<i>δ</i><sub>Pt</sub>). Interestingly, <i>S</i><sub>Pt</sub> remained independent of the ionomer’s hydration condition (<i>λ</i>), showing that thinner platinum layers are more efficient at storing stress relative to their thickness. Despite having only 40% of the platinum thickness, the PR-IPMC retained 57.6% of the stress compared to the reference IPMC. This relatively increased stress concentration explains why the decrease in blocking force is less than expected based on the reduction in platinum thickness. FEM simulations, aligned with experimental results, provide a useful tool for predicting device behavior under various conditions and guiding the development of future IPMC devices.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2024","pages":"2407 - 2418"},"PeriodicalIF":2.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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