Journal of Solid State Electrochemistry最新文献

Sodium gluconate is one of the corrosion inhibitors of steel in cooling water, and it is low cost. To improve its low inhibition ability, a composite corrosion inhibitor composed of sodium gluconate (SG) and hexamethylenetetramine (HMTA) was proposed and examined in this paper. Immersion, scanning electron microscope (SEM), atomic absorption spectrometry (AAS), and electrochemical tests were used to estimate the influence of HMTA on the inhibitor performance of SG. The results showed that the addition of hexamethylenetetramine can remarkably increase the inhibition performance of sodium gluconate. When the concentration of sodium gluconate was fixed at 0.2 wt% and the concentration of hexamethylenetetramine was 1.2 wt%, the best performance of the composite corrosion inhibitor was obtained.

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FePS₃ has a wide range of applications in lithium-ion batteries and catalysis. Considering that FePS₃ has a super high theoretical specific capacity, we tried to use FePS₃ as cathode materials for thermal batteries. The results reveal that the micron-sized FePS₃ generated by a high-temperature solid-phase method has good thermal stability (2% weight loss) at temperatures above 635 ℃. Furthermore, the specific capacity exceeds 450 mAh g⁻¹ at 500 ℃, with 0.1 A cm⁻² current density and 1.65 V cut-off voltage. Excellent thermal stability and high specific capacity make them very promising as cathode materials for thermal batteries. This work provides new ideas for the study of cathode materials for high specific capacity thermal batteries.

The growing progress in modern electronic and optoelectronic technologies has significantly increased the need for dependable energy storage systems with enhanced energy density and long operational life. Among various energy storage options, supercapacitors have gained considerable attention due to their remarkable features such as high-power density, fast charging and discharging rates, and excellent cycling stability. However, conventional supercapacitors inherently low energy density remains a major challenge, restricting their broader applications. This limitation has driven extensive research efforts toward developing advanced supercapacitor technologies with enhanced performance. Asymmetric supercapacitors (ASCs), which utilize two distinct electrode materials, offer a significant benefit by extending the operational voltage window, thereby substantially improving energy density. Metal ferrites are especially noteworthy for their outstanding properties, including high electrical conductivity, low cost, excellent optical properties, natural abundance, and excellent electrochemical performance. Metal ferrites have been utilized as key components in supercapacitor (SC) applications, while the multivalent cations and inherent magnetic nature of metal ferrites are an attractive feature for energy storage applications. This review focuses on the latest metal ferrite-based materials for ASCs, including the synthesis methods of ferrites, the working principle of ASCs, the role of ferrites in ASCs, and the electrolytes used for ASCs. In this review, we have highlighted the metal ferrites such as NiFe₂O₄, ZnFe₂O₄, CoFe₂O₄, CuFe₂O₄, and MnFe₂O₄.

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This study proposes a novel synthesis strategy based on the FeS₂/Fe solid-state reaction, successfully preparing FeS lithium-ion battery anode materials with excellent electrochemical performance. The effects of different synthesis temperatures on the crystal structure, morphology, and electrochemical performance of FeS in lithium-ion batteries were systematically investigated. Experimental results indicate that FeS exhibits optimal crystallinity and electrochemical activity at a synthesis temperature of 950 ℃. After 100 cycles at a current density of 100 mA.g⁻¹, the capacity retention rate reaches 96%, and electrochemical polarisation phenomena disappear. This study provides theoretical basis and technical references for the controllable synthesis of low-cost, high-performance sulphide anode materials.

High-nickel ternary cathodes are widely employed in lithium-ion batteries due to their better performance. Nevertheless, with the growing in nickel content, the material suffers from structural instability and poor cycling performance. In this study, Nb⁵⁺ doping was carried out on LiNi_0.90Co_0.04Al_0.06O₂ (NCA) cathode material by high temperature solid state method. The results of FTIR and XPS characterization show that Nb⁵⁺ doping can reduce the carbonate content on the surface of the material. SEM and TEM results show that Nb⁵⁺ doping can refine the primary particles and expand the lattice spacing of the material. In-situ XRD results show that the reversibility of the H2 → H3 phase transition of 1.0%Nb-NCA is well. Electrochemical results showed that the material of 1.0%Nb-NCA has a first discharge specific capacity of 188.12 mAh/g at 0.5 C and 2.5–4.3 V, which is 21.86 mAh/g higher than that of the original sample, and the capacity retention rate is 91.60% after 100 cycles.

Developing selective and sensitive methods for uranium monitoring is crucial for environmental safety and public health. In this study, we report the functionalization of boron-doped diamond (BDD) microcell electrodes using diazonium salt chemistry, followed by grafting of the nitrilotriacetic acid (NTA) ligand to enable the electrochemical detection of hexavalent uranium (U(VI)). Key parameters, including the number of diazonium cycles, pH, and electrolyte composition, were optimized to enhance the sensor’s performance. The surface modification steps were confirmed through cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), contact angle measurements, and surface energy analysis. Upon exposure to U(VI)-containing solutions, the modified electrode demonstrated a linear electrochemical response over a concentration range of 8.5 × 10⁻¹² to 4.5 × 10⁻⁶ M, with a detection limit as low as 4 pM, highlighting then the high sensitivity of the sensor. Notably, the sensor exhibited excellent selectivity for U(VI) in the presence of common interfering metal ions such as Zn(II), Cd(II), Pb(II), and Cu(II) and against different anionic and organic compounds. The sensor’s practical applicability was further validated through uranium detection in real water samples, with results closely matching those obtained by inductively coupled plasma mass spectrometry (ICP-MS). These findings confirm the sensor's reliability and potential for accurate, on-site uranium monitoring in environmental matrices.

The exploration of advanced anode materials for lithium-ion batteries (LIBs) has prompted the investigation of NiO/MXene composites, which merge the high theoretical capacity of NiO with the excellent conductivity and structural stability of MXene. This research emphasizes the synthesis, characterization, and electrochemical assessment of NiO/MXene composites as high performance anode materials. Co-precipitation technique is employed to fabricate NiO/MXene material, resulting in a distinct layered structure that alleviates common issues such as volume expansion and particle disintegration during charge–discharge cycles. Structural analyses such as X-ray diffraction and X-ray photoelectron spectroscopy measurements confirms the formation of NiO/MXenes. Morphological examination reveals the even distribution of NiO on MXene surfaces and interlayers. Electrochemical characterization exposed its cycling stability, capacity retention, rate capability and effective capacitive and diffusion contribution. The synergistic interaction between NiO and MXene facilitates lithium-ion diffusion and enhances electronic conductivity. The composite showed a first charge/discharge capacity of 649.47/617.8 mAh g⁻¹ at 0.1C rate, exhibiting significant capacitive and diffusive contribution that supports dual mechanisms of charge storage.

This paper focuses on the investigation of tin disulfide (SnS₂) as a promising anode material for sodium-ion batteries (SIBs), which have emerged as a viable alternative to lithium-ion batteries due to the abundance and low cost of sodium. Sodium is widely available, comprising approximately 2.6% of the Earth’s crust, and is also present in large quantities in seawater in the form of sodium chloride, making it a readily accessible and economical resource. As such, sodium-ion batteries are considered a cost-effective energy storage solution that can help mitigate the limitations associated with lithium resource scarcity. Their environmental friendliness and inherent safety—particularly in aqueous systems where electrolytes exhibit high safety—further contribute to their growing appeal. In recent years, both research and industrial development of sodium-ion batteries have accelerated, with technological advancements leading to increasing maturity and broader application prospects. SIBs have demonstrated unique advantages in large-scale energy storage, low-speed electric vehicles, and backup power systems for data centers. This paper provides a comprehensive review of various fabrication methods for SnS₂-based anodes, aiming to offer valuable insights and direction for future research. It concludes with a summary of promising research avenues, serving as a reference for the continued development and optimization of SnS₂ anodes in sodium-ion battery technologies.