Solid State Ionics最新文献

英文中文

Revolutionizing energy: Vanadium pentoxide (V2O5) and molybdenum disulfide (MoS2) composite incorporated with GQDs as a dual-purpose material for supercapacitors and hydrogen evolution

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-27 DOI: 10.1016/j.ssi.2025.116784

Haseebul Hassan , Sidra Mumtaz , M. Waqas Iqbal , Amir Muhammad Afzal , Tahmina Yaseen , Muhammad Arslan Sunny , Saikh Mohammad , Nouf H. Alotaibi , Mumtaz Manzoor

In the pursuit of developing electrode materials with versatile uses, including energy storage as well as facilitating the hydrogen evolution reaction (HER), extensive research efforts have been dedicated to this domain. A novel composite of V₂O₅@MoS₂ has been synthesized within this study and employed in asymmetric supercapacitors. The V₂O₅@MoS₂ electrode demonstrated a remarkable

Cs

of 1735C/g at a current density of 2.0 A/g through a comprehensive three-cell investigation. Remarkably, substantial specific surface area of 79.32 m²/g, was detected, ascertained through BET measurement, significantly augmenting its electrochemical performance. Showcasing specific charge capacity (Qs) of 312C/g, furthermore, the V₂O₅@MoS₂ composite was utilized in constructing the supercapattery device. Impressively, the device V₂O₅@MoS₂//AC delivered 57 Wh/kg energy at 1050 W/kg power density. Remarkably, attesting to its exceptional cyclic stability, the V₂O₅@MoS₂ device retained 95 % of its initial capacity, after undergoing 12,000 charge-discharge cycles. Moreover, the V₂O₅@MoS₂ composite demonstrated the lowest overpotential compared to 102 mV composites evaluated in a hydrogen evolution reaction (HER). This underscores the outstanding catalytic activity of the V₂O₅@MoS₂ electrode for HER applications, further validating its potential for utilization in energy storage devices.

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引用次数: 0

Flexible piezoresistive sensors with high sensitivity and ultra-wide pressure range based on alkalized MXene

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116746

Shuo Yan , Xiaopeng Li , Shifeng Wang , Xing Liu , Xianjin Hu , Mengyu Liang , Ting-Ting Li , Jie Chen

Flexible pressure sensors, characterized by the high sensitivity and broad detection range, have gathered significant interest for applications in wearable electronics and human-machine interfaces. Despite their potential, the development of such sensors remains a formidable challenge. In this study, we report the fabrication of a flexible, highly sensitive piezoresistive sensor featuring a pleated architecture. This sensor was crafted from thermoplastic polyurethane (TPU) as the base material and a spun film serving as the flexible substrate, utilizing an electrospinning technique. The integration of MXene, which was subjected to structural optimization via alkaline treatment with sodium hydroxide (NaOH), was achieved through an impregnation and coating process onto the TPU film. The resulting MXene-composite sensor exhibits remarkable sensitivity (2.88 kP⁻¹), an extensive detection range (up to 300 kPa), rapid response time (100 ms), and superior stability over more than 5000 cycles. The sensor's versatility is demonstrated through its successful deployment in capturing a variety of physiological signals from the human body, such as pulse, respiration, and swallowing, as well as in monitoring full-body motion in real-time, including movements of the fingers, wrist, and sole of the foot. Furthermore, its application as a component of flexible electronic skin underscores its immense potential for integration into physiological analysis systems, humanoid robotics, and biomedical prosthetics.

{"title":"Flexible piezoresistive sensors with high sensitivity and ultra-wide pressure range based on alkalized MXene","authors":"Shuo Yan , Xiaopeng Li , Shifeng Wang , Xing Liu , Xianjin Hu , Mengyu Liang , Ting-Ting Li , Jie Chen","doi":"10.1016/j.ssi.2024.116746","DOIUrl":"10.1016/j.ssi.2024.116746","url":null,"abstract":"<div><div>Flexible pressure sensors, characterized by the high sensitivity and broad detection range, have gathered significant interest for applications in wearable electronics and human-machine interfaces. Despite their potential, the development of such sensors remains a formidable challenge. In this study, we report the fabrication of a flexible, highly sensitive piezoresistive sensor featuring a pleated architecture. This sensor was crafted from thermoplastic polyurethane (TPU) as the base material and a spun film serving as the flexible substrate, utilizing an electrospinning technique. The integration of MXene, which was subjected to structural optimization via alkaline treatment with sodium hydroxide (NaOH), was achieved through an impregnation and coating process onto the TPU film. The resulting MXene-composite sensor exhibits remarkable sensitivity (2.88 kP<sup>−1</sup>), an extensive detection range (up to 300 kPa), rapid response time (100 ms), and superior stability over more than 5000 cycles. The sensor's versatility is demonstrated through its successful deployment in capturing a variety of physiological signals from the human body, such as pulse, respiration, and swallowing, as well as in monitoring full-body motion in real-time, including movements of the fingers, wrist, and sole of the foot. Furthermore, its application as a component of flexible electronic skin underscores its immense potential for integration into physiological analysis systems, humanoid robotics, and biomedical prosthetics.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116746"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring a metal coated by M-graphene as an encouraging anode electrode material for sodium-ion batteries using DFT calculations

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116762

Shaymaa Abed Hussein , Abdulkhalaq Fawzy Hamood , Vicky Jain , Pawan Sharma , Abhishek Kumar , K. Phaninder Vinay , Uday Raheja , Yazen M. Alawaideh , Azath Mubarakali

In the pursuit of advancing sodium-ion batteries (SIBs) technology as high-potential alternatives for lithium-ion batteries (LIBs), we were investigated the potential of M-graphene as an encouraging anode material using DFT-D calculations. The density of states (DOS) plot and band structure reveal that M-graphene with a zero-band gap indicates its metallic nature which is beneficial for electrical conductivity in redox reactions. The migration of sodium ions on the M-graphene surface was explored along two plausible paths. The calculated diffusion energy barrier indicated a remarkably low value of 0.29 and 0.27 eV, suggesting efficient ion migration. This kinetic favorability is critical for high-rate battery applications. Cohesive energy calculations were illustrated the thermodynamic stability of the adsorbed structure in different sodium concentrations. Ab initio molecular dynamics (AIMD) calculations demonstrated the thermal stability of fully adsorbed structure at 300 K. Furthermore, M-graphene demonstrates an impressive theoretical capacity of 1395 mAh g⁻¹, which is significantly higher than traditional anode materials. The average open-circuit voltage (OCV) is determined to be 0.79 V which is in the SIBs potential range. We found that although the induction of a defect in the structure does not change the metallic properties, it affects the adsorption behavior of M-graphene. These findings underscore M-graphene's substantial capacity and low energy barrier for ion diffusion, marking it as a viable candidate for high-performance SIBs.

{"title":"Exploring a metal coated by M-graphene as an encouraging anode electrode material for sodium-ion batteries using DFT calculations","authors":"Shaymaa Abed Hussein , Abdulkhalaq Fawzy Hamood , Vicky Jain , Pawan Sharma , Abhishek Kumar , K. Phaninder Vinay , Uday Raheja , Yazen M. Alawaideh , Azath Mubarakali","doi":"10.1016/j.ssi.2024.116762","DOIUrl":"10.1016/j.ssi.2024.116762","url":null,"abstract":"<div><div>In the pursuit of advancing sodium-ion batteries (SIBs) technology as high-potential alternatives for lithium-ion batteries (LIBs), we were investigated the potential of M-graphene as an encouraging anode material using DFT-D calculations. The density of states (DOS) plot and band structure reveal that M-graphene with a zero-band gap indicates its metallic nature which is beneficial for electrical conductivity in redox reactions. The migration of sodium ions on the M-graphene surface was explored along two plausible paths. The calculated diffusion energy barrier indicated a remarkably low value of 0.29 and 0.27 eV, suggesting efficient ion migration. This kinetic favorability is critical for high-rate battery applications. Cohesive energy calculations were illustrated the thermodynamic stability of the adsorbed structure in different sodium concentrations. Ab initio molecular dynamics (AIMD) calculations demonstrated the thermal stability of fully adsorbed structure at 300 K. Furthermore, M-graphene demonstrates an impressive theoretical capacity of 1395 mAh g<sup>−1</sup>, which is significantly higher than traditional anode materials. The average open-circuit voltage (OCV) is determined to be 0.79 V which is in the SIBs potential range. We found that although the induction of a defect in the structure does not change the metallic properties, it affects the adsorption behavior of M-graphene. These findings underscore M-graphene's substantial capacity and low energy barrier for ion diffusion, marking it as a viable candidate for high-performance SIBs.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116762"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and electrical conductivity of core-shell structured Ce0.8Sm0.2O1.90-δ@xBaCe0.8Sm0.2O2.95-δ (x = 0, 0.5, 1, 1.5) ceramics

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116756

Xing Lu , Bin Meng , Xinyu Ping , Congcong Fang , Ziran Chai , Zhenteng Wang , Weixin Zeng

Core-shell structured powders of Ce_0.8Sm_0.2O_1.90-δ(SDC)@xBaCe_0.8Sm_0.2O_2.95-δ(BCS) (x = 0, 0.5, 1, 1.5) were synthesized by a two-step co-precipitation method and then sintered to prepare the corresponding SDC@xBCS (x = 0, 0.5, 1, 1.5) ceramics. The XRD detection combined with SEM and TEM analysis confirms that the powders and ceramics are only composed of SDC and BCS phases, and no other phases are detected. The average diameter of the spherical core-shell structured SDC@xBCS powders is in 20–60 nm. A thin layer of BCS is coated on the surface of SDC in the synthesized SDC@BCS nanopowders, and a core-shell structure forms in the SDC@BCS composite ceramics. With the increase of the ratio of BCS:SDC from 1 to 1.5, the sample is more difficult to be densified. For x = 1, the sample of SDC@BCS achieves the highest electrical conductivity in four samples (x = 0, 0.5, 1, 1.5). At the test temperature of 600 °C, the electrical conductivity of the core-shell structured SDC@BCS ceramic (1:1) is higher than that of the common uniformly-mixed SDC-BCS samples, i.e., 1.545 × 10⁻² S/cm and 0.685 × 10⁻² S/cm in air and 10 %H₂–90 %N₂ atmosphere, respectively. At the same time, the specific grain boundary electrical conductivity of the core-shell structured SDC@BCS ceramics is also higher than that of uniformly mixed SDC-BCS composite ceramics. The construction of a core-shell structure can contribute to improving the electrical conductivity of the SDC-BCS composite ceramics.

{"title":"Preparation and electrical conductivity of core-shell structured Ce0.8Sm0.2O1.90-δ@xBaCe0.8Sm0.2O2.95-δ (x = 0, 0.5, 1, 1.5) ceramics","authors":"Xing Lu , Bin Meng , Xinyu Ping , Congcong Fang , Ziran Chai , Zhenteng Wang , Weixin Zeng","doi":"10.1016/j.ssi.2024.116756","DOIUrl":"10.1016/j.ssi.2024.116756","url":null,"abstract":"<div><div>Core-shell structured powders of Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>1.90-δ</sub>(SDC)@xBaCe<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>2.95-δ</sub>(BCS) (x = 0, 0.5, 1, 1.5) were synthesized by a two-step co-precipitation method and then sintered to prepare the corresponding SDC@xBCS (x = 0, 0.5, 1, 1.5) ceramics. The XRD detection combined with SEM and TEM analysis confirms that the powders and ceramics are only composed of SDC and BCS phases, and no other phases are detected. The average diameter of the spherical core-shell structured SDC@xBCS powders is in 20–60 nm. A thin layer of BCS is coated on the surface of SDC in the synthesized SDC@BCS nanopowders, and a core-shell structure forms in the SDC@BCS composite ceramics. With the increase of the ratio of BCS:SDC from 1 to 1.5, the sample is more difficult to be densified. For x = 1, the sample of SDC@BCS achieves the highest electrical conductivity in four samples (x = 0, 0.5, 1, 1.5). At the test temperature of 600 °C, the electrical conductivity of the core-shell structured SDC@BCS ceramic (1:1) is higher than that of the common uniformly-mixed SDC-BCS samples, i.e., 1.545 × 10<sup>−2</sup> S/cm and 0.685 × 10<sup>−2</sup> S/cm in air and 10 %H<sub>2</sub>–90 %N<sub>2</sub> atmosphere, respectively. At the same time, the specific grain boundary electrical conductivity of the core-shell structured SDC@BCS ceramics is also higher than that of uniformly mixed SDC-BCS composite ceramics. The construction of a core-shell structure can contribute to improving the electrical conductivity of the SDC-BCS composite ceramics.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116756"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-performance anion exchange membranes based on semi-interpenetrating blends of polyethylene terephthalate and quaternized chitosan

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116761

Yaling Wen , Shuang Li , Mingchao Gang , Lulu Wang , Qiang Wang , Fan Zhang , Yang Zhang , Jilin Wang

High ionic conductivity and long-term durability of anion exchange membranes (AEMs) are indispensable to facilitate the commercial application of anion-exchange membrane fuel cells (AEMFCs). Herein, novel high performance AEMs are synthesized for the first time. Specifically, quaternized chitosan (QCS) with high ion content without chloromethylation is selected as the ion conduction phase, due to its low cost and biodegradability. Polyethylene terephthalate (PET) with high film-forming ability, excellent strength, dimensional stability, and physical properties is selected as the mechanical support material. Moreover, semi-interpenetrating polymer networks (s-IPNs) architecture is formed by cross-linking QCS with glutaraldehyde (GA) to enhance the compatibility and optimize the advantages of each polymer matrix. Consequently, the homogeneous semi-IPN AEMs combines the benefits of ionic network and rigid linear polymer, achieving high performance, surpassing the simple blend AEM. The PHM-4 exhibits excellent mechanical properties (24.5 MPa, 17.94 %), outstanding ionic conductivity (89.64 mS/cm, 80 °C), as well as excellent alkaline stability (91.5 % retaining of initial conductivity after immersing in 6 M NaOH at 80 °C for 500 h). Furthermore, the single fuel cell based on PHM-4 displays high performance of 305 mW/cm² (80 °C). This study proposes a new strategy for the synthesis of high-performance semi-IPN AEMs, further enhancing the application value of QCS based AEMs in fuel cells.

{"title":"High-performance anion exchange membranes based on semi-interpenetrating blends of polyethylene terephthalate and quaternized chitosan","authors":"Yaling Wen , Shuang Li , Mingchao Gang , Lulu Wang , Qiang Wang , Fan Zhang , Yang Zhang , Jilin Wang","doi":"10.1016/j.ssi.2024.116761","DOIUrl":"10.1016/j.ssi.2024.116761","url":null,"abstract":"<div><div>High ionic conductivity and long-term durability of anion exchange membranes (AEMs) are indispensable to facilitate the commercial application of anion-exchange membrane fuel cells (AEMFCs). Herein, novel high performance AEMs are synthesized for the first time. Specifically, quaternized chitosan (QCS) with high ion content without chloromethylation is selected as the ion conduction phase, due to its low cost and biodegradability. Polyethylene terephthalate (PET) with high film-forming ability, excellent strength, dimensional stability, and physical properties is selected as the mechanical support material. Moreover, semi-interpenetrating polymer networks (s-IPNs) architecture is formed by cross-linking QCS with glutaraldehyde (GA) to enhance the compatibility and optimize the advantages of each polymer matrix. Consequently, the homogeneous semi-IPN AEMs combines the benefits of ionic network and rigid linear polymer, achieving high performance, surpassing the simple blend AEM. The PHM-4 exhibits excellent mechanical properties (24.5 MPa, 17.94 %), outstanding ionic conductivity (89.64 mS/cm, 80 °C), as well as excellent alkaline stability (91.5 % retaining of initial conductivity after immersing in 6 M NaOH at 80 °C for 500 h). Furthermore, the single fuel cell based on PHM-4 displays high performance of 305 mW/cm<sup>2</sup> (80 °C). This study proposes a new strategy for the synthesis of high-performance semi-IPN AEMs, further enhancing the application value of QCS based AEMs in fuel cells.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116761"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physicochemical properties of short-side-chain perfluorosulfonic acid membranes at elevated temperatures

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116747

Harilal, Yi-Lin Kao, Chao Pan, David Aili, Qingfeng Li

Water and CO₂ electrolysis at elevated temperatures in cells equipped with short-side-chain perfluorosulfonic acid membranes could potentially allow for new approaches to tuning catalyst kinetics and selectivity, but the membrane characteristics under such conditions remains to be described. In this work, a short-side-chain perfluorosulfonic acid membrane (Aquivion) is characterized at temperatures up to 150 °C and high humidification levels with respect to tensile behavior, ionic conductivity, permeability of hydrogen and methanol, and stability. The membrane is found to retain mechanical robustness at temperatures up to at least 130 °C while dehydration at temperatures above 100 °C under ambient pressure results in a significant conductivity decay. The densification of the membrane matrix at temperatures above the boiling point of water under varied pressures leads to reduced hydrogen and methanol permeability. Pressurization up to 5 bars effectively mitigates the conductivity decay due to the presence of liquid water but also results in increased permeability. The membrane stability test, as characterized by hydrogen crossover measurements, shows that humidification is a harsher stressor than temperature in the studied range.

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引用次数: 0

Fabrication of electrochemical cell based on i-carrageenan doped NH4HCO2 solid electrolyte

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116757

V. Moniha , K. Venkatesh , M. Premalatha , S. Monisha , S. Selvalakshmi , B. Archana , M. Alagar , B. Sundaresan

Solution casting method was used to develop a natural polymer electrolyte (NPE) based on iota carrageenan (iCG) using different amounts of NH₄HCO₂. Distilled Water was chosen as the solvent. The structural, thermal, electrical, and electrochemical analyses of the iCG: NH₄HCO₂ system confirmed its non-crystalline nature, low glass transition temperature (T_g = 48 °C), maximum DC conductivity and electrochemical stability (3.11 V). The maximum DC conductivity for the composition 1 g iCG: 0.4 wt% NH₄HCO₂ was observed to be 1.94 × 10⁻³ S cm⁻¹. A primary proton battery (PPB) was constructed by sandwiching the optimum electrolyte between MnO₂ as the cathode and Zn/ZnSO₄·7H₂O as the anode to evaluate the efficiency of the 1 g iCG: 0.4 wt% NH₄HCO₂ NPE. Additionally, a single PEMFC was fabricated with 1 g iCG: 0.4 wt% NH₄HCO₂ NPE. An OCV for PPB and PEM fuel cell were found to be 1.60 V and 616 mV, respectively.

{"title":"Fabrication of electrochemical cell based on i-carrageenan doped NH4HCO2 solid electrolyte","authors":"V. Moniha , K. Venkatesh , M. Premalatha , S. Monisha , S. Selvalakshmi , B. Archana , M. Alagar , B. Sundaresan","doi":"10.1016/j.ssi.2024.116757","DOIUrl":"10.1016/j.ssi.2024.116757","url":null,"abstract":"<div><div>Solution casting method was used to develop a natural polymer electrolyte (NPE) based on iota carrageenan (iCG) using different amounts of NH<sub>4</sub>HCO<sub>2</sub>. Distilled Water was chosen as the solvent. The structural, thermal, electrical, and electrochemical analyses of the iCG: NH<sub>4</sub>HCO<sub>2</sub> system confirmed its non-crystalline nature, low glass transition temperature (T<sub>g</sub> = 48 °C), maximum DC conductivity and electrochemical stability (3.11 V). The maximum DC conductivity for the composition 1 g iCG: 0.4 wt% NH<sub>4</sub>HCO<sub>2</sub> was observed to be 1.94 × 10<sup>−3</sup> S cm<sup>−1</sup>. A primary proton battery (PPB) was constructed by sandwiching the optimum electrolyte between MnO<sub>2</sub> as the cathode and Zn/ZnSO<sub>4</sub>·7H<sub>2</sub>O as the anode to evaluate the efficiency of the 1 g iCG: 0.4 wt% NH<sub>4</sub>HCO<sub>2</sub> NPE. Additionally, a single PEMFC was fabricated with 1 g iCG: 0.4 wt% NH<sub>4</sub>HCO<sub>2</sub> NPE. An OCV for PPB and PEM fuel cell were found to be 1.60 V and 616 mV, respectively.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116757"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Positive impact of the architecture of the oxygen electrode based on LNO and CGO for solid oxide electrochemical cells

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116744

Michael Spann , Jérôme Laurencin , Elisabeth Djurado

The Ruddlesden-Popper phase, strontium- and cobalt-free lanthanum nickelate, La₂NiO_4+δ (LNO), is a mixed-conducting oxide phase and a promising oxygen electrode for SOCs (solid oxide electrochemical cells), thanks to its high diffusion of oxygen and its surface exchange properties. The electrochemical performance is strongly related to the charge transfer at the triple phase boundaries in the surface path and the excorporation/incorporation reaction in the bulk path. In this context, this study explores a strategy to increase the number of active sites in LNO-based electrodes, by designing nanostructured active functional layers and incorporating gadolinium-doped ceria (CGO). Two architectural scenarios are proposed compared to a pure LNO reference: a uniform distribution of CGO in the volume of the LNO and a continuous compositional gradient, both fabricated for the first time by electrostatic spray deposition (ESD).

These designs are investigated based on phase structure, microstructure, elemental chemical composition, and electrochemical properties using SEM-EDS, XRD, and electrochemical impedance spectroscopy. Polarization resistance values are discussed as a function of the distribution of contact points in the electrode volume and LNO crystallization. The results suggest that the presented approach to achieve CGO: LNO-based gradient electrodes allows controlling the localization of the interfaces between the two phases, thereby optimizing charge transfer.

{"title":"Positive impact of the architecture of the oxygen electrode based on LNO and CGO for solid oxide electrochemical cells","authors":"Michael Spann , Jérôme Laurencin , Elisabeth Djurado","doi":"10.1016/j.ssi.2024.116744","DOIUrl":"10.1016/j.ssi.2024.116744","url":null,"abstract":"<div><div>The Ruddlesden-Popper phase, strontium- and cobalt-free lanthanum nickelate, La<sub>2</sub>NiO<sub>4+δ</sub> (LNO), is a mixed-conducting oxide phase and a promising oxygen electrode for SOCs (solid oxide electrochemical cells), thanks to its high diffusion of oxygen and its surface exchange properties. The electrochemical performance is strongly related to the charge transfer at the triple phase boundaries in the surface path and the excorporation/incorporation reaction in the bulk path. In this context, this study explores a strategy to increase the number of active sites in LNO-based electrodes, by designing nanostructured active functional layers and incorporating gadolinium-doped ceria (CGO). Two architectural scenarios are proposed compared to a pure LNO reference: a <em>uniform</em> distribution of CGO in the volume of the LNO and a continuous compositional <em>gradient</em>, both fabricated for the first time by electrostatic spray deposition (ESD).</div><div>These designs are investigated based on phase structure, microstructure, elemental chemical composition, and electrochemical properties using SEM-EDS, XRD, and electrochemical impedance spectroscopy. Polarization resistance values are discussed as a function of the distribution of contact points in the electrode volume and LNO crystallization. The results suggest that the presented approach to achieve CGO: LNO-based <em>gradient</em> electrodes allows controlling the localization of the interfaces between the two phases, thereby optimizing charge transfer.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116744"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable grain boundary conductivity in sodium doped high entropy oxides

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116745

Justin Cortez , Alexander Dupuy , Hasti Vahidi , Yiheng Xiao , William J. Bowman , Julie M. Schoenung

Concerns with the safety and sourcing of lithium-ion batteries have prompted significant research into sodium-based systems. High entropy oxides (HEO), which contain five or more oxide components in equimolar amounts, are well suited for battery applications due to their ability to accommodate a substantial quantity of mobile charge carriers (such as sodium), while also demonstrating promising cycling stability, electrical conductivity, and battery capacity retention. Here we investigate the underexplored influence of sodium doping, processing, and microstructure on charge transport in bulk sintered (Co,Cu,Mg,Ni,Zn)_1-xNa_xO. We find that the conductivity increases with increasing dopant amount, up to 1.4 × 10⁻⁵ S∙cm⁻¹ at x = 0.33. Much of this increase is attributed to the high grain boundary conductivity, which originates from a Na_xCoO₂ layered structure that forms in the grain boundaries during processing. X-ray diffraction and transmission electron microscopy confirm the presence of the layered structure, while electrochemical impedance spectroscopy highlights the distinct contribution to the impedance response. The relative contributions of the grain boundaries and the bulk to the charge transport are discussed, along with how processing conditions and composition can be used to effectively engineer grain boundaries in doped HEO materials.

{"title":"Tunable grain boundary conductivity in sodium doped high entropy oxides","authors":"Justin Cortez , Alexander Dupuy , Hasti Vahidi , Yiheng Xiao , William J. Bowman , Julie M. Schoenung","doi":"10.1016/j.ssi.2024.116745","DOIUrl":"10.1016/j.ssi.2024.116745","url":null,"abstract":"<div><div>Concerns with the safety and sourcing of lithium-ion batteries have prompted significant research into sodium-based systems. High entropy oxides (HEO), which contain five or more oxide components in equimolar amounts, are well suited for battery applications due to their ability to accommodate a substantial quantity of mobile charge carriers (such as sodium), while also demonstrating promising cycling stability, electrical conductivity, and battery capacity retention. Here we investigate the underexplored influence of sodium doping, processing, and microstructure on charge transport in bulk sintered (Co,Cu,Mg,Ni,Zn)<sub>1-x</sub>Na<sub>x</sub>O. We find that the conductivity increases with increasing dopant amount, up to 1.4 × 10<sup>−5</sup> S∙cm<sup>−1</sup> at x = 0.33. Much of this increase is attributed to the high grain boundary conductivity, which originates from a Na<sub>x</sub>CoO<sub>2</sub> layered structure that forms in the grain boundaries during processing. X-ray diffraction and transmission electron microscopy confirm the presence of the layered structure, while electrochemical impedance spectroscopy highlights the distinct contribution to the impedance response. The relative contributions of the grain boundaries and the bulk to the charge transport are discussed, along with how processing conditions and composition can be used to effectively engineer grain boundaries in doped HEO materials.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116745"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical properties and application of Bi-doped Ba3Ca1.18Nb1.82−xBixO9−δ electrolyte

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics

Pub Date : 2025-01-01 DOI: 10.1016/j.ssi.2024.116748

Xinyu Cai, Ying Li, Lixin Yang

Ba₃Ca_1.18Nb_1.82−xBi_xO_9-δ (x = 0, 0.1, 0.2, 0.3) proton conductor materials with different Bi doping ratios are prepared. The Bi element was successfully doped into the lattice of Ba₃Ca_1.18Nb_1.82−xBi_xO_9−δ proton conductor to form a single perovskite phase. The effects of Bi doping on grain boundary are evaluated by the analysis of relaxation time distribution (DRT). The proper Bi doping ratio for Ba₃Ca_1.18Nb_1.82−xBi_xO_9−δ (x = 0, 0.1, 0.2, 0.3) can improves the grain boundaries performance. With the increase of Bi doping ratio, the conductivity of the sample increases first and then decreases. Among all the samples, Ba₃Ca_1.18Nb_1.72Bi_0.1O_9-δ (BCNB10) has the highest conductivity and satisfactory proton transport properties. In the wet air atmosphere at 700 °C, the proton transference number of BCNB10 is still higher than 0.6. The Ba₃Ca_1.18Nb_1.72Bi_0.1O_9-δ-based fuel cell has a power density of 59.7 mW cm² at 700 °C. The results show that BCNB10 is a promising fuel cell electrolyte material with high performance.

{"title":"Electrochemical properties and application of Bi-doped Ba3Ca1.18Nb1.82−xBixO9−δ electrolyte","authors":"Xinyu Cai, Ying Li, Lixin Yang","doi":"10.1016/j.ssi.2024.116748","DOIUrl":"10.1016/j.ssi.2024.116748","url":null,"abstract":"<div><div>Ba<sub>3</sub>Ca<sub>1.18</sub>Nb<sub>1.82−x</sub>Bi<sub>x</sub>O<sub>9-δ</sub> (x = 0, 0.1, 0.2, 0.3) proton conductor materials with different Bi doping ratios are prepared. The Bi element was successfully doped into the lattice of Ba<sub>3</sub>Ca<sub>1.18</sub>Nb<sub>1.82−x</sub>Bi<sub>x</sub>O<sub>9−δ</sub> proton conductor to form a single perovskite phase. The effects of Bi doping on grain boundary are evaluated by the analysis of relaxation time distribution (DRT). The proper Bi doping ratio for Ba<sub>3</sub>Ca<sub>1.18</sub>Nb<sub>1.82−x</sub>Bi<sub>x</sub>O<sub>9−δ</sub> (x = 0, 0.1, 0.2, 0.3) can improves the grain boundaries performance. With the increase of Bi doping ratio, the conductivity of the sample increases first and then decreases. Among all the samples, Ba<sub>3</sub>Ca<sub>1.18</sub>Nb<sub>1.72</sub>Bi<sub>0.1</sub>O<sub>9-δ</sub> (BCNB10) has the highest conductivity and satisfactory proton transport properties. In the wet air atmosphere at 700 °C, the proton transference number of BCNB10 is still higher than 0.6. The Ba<sub>3</sub>Ca<sub>1.18</sub>Nb<sub>1.72</sub>Bi<sub>0.1</sub>O<sub>9-δ</sub>-based fuel cell has a power density of 59.7 mW cm<sup>2</sup> at 700 °C. The results show that BCNB10 is a promising fuel cell electrolyte material with high performance.</div></div>","PeriodicalId":431,"journal":{"name":"Solid State Ionics","volume":"419 ","pages":"Article 116748"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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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