JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Zhen Li,Jinglin Mu,Xiaozhong Wu,Jiwen Li,Hao Yin,Tong Zhou,Xiangyan Shen,Pengfei Zhou,Jin Zhou
Making CF x -based batteries rechargeable represents a superior promise route to dramatically boost of secondary battery systems due to the unprecedented theoretical capacity and specific energy density of CF x . However, this goal has been plagued by a fundamental challenge of the high dissociation energy and the non-uniform deposition of the discharge products, alkaline metal fluoride (e.g., NaF). Herein, a novel strategy of engineering the discharge product NaF is developed. The hybrid Cu@CF 0.88 cathode material delivers a reversible discharge capacity of 700.6 mAh g −1 at 20 mAh g −1 and an energy density of 1541.1 Wh kg −1 , corresponding to 81.4% of the theoretical value. At 200 mAh g −1 , it gives a reversible discharge capacity of 250.1 mAh g −1 after 10 cycles. The Cu nanoparticles serve as preferential nucleation sites, effectively regulating the nucleation, crystallization, and spatial distribution of NaF in the initial discharge process. More importantly, an in situ generated intermediate NaCuF 3 induces the reconstruction of NaF into a more readily decomposable and electrochemically active amorphous phase. This strategy remarkably improves the reaction reversibility of the Na/CFₓ batteries, while additional efforts are required to optimize the long-term cycling stability for practical applications.
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DOI
PubMed
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Xiaoyu Zhang,Jianxing Dai,Qi Liu,Zirui Wang,Qiang Dou,Yuan Qian,Haiying Fu
NaF-BeF 2 molten salt has been proposed as one of the potential solvents and coolants for molten salt reactor due to its pertinent properties and satisfactory neutron capture cross-section. The experimental measurements combined theoretical simulations were employed to investigate comprehensive information on the structures and thermophysical properties of molten NaF-BeF 2 . Specifically, the specific heat capacity, density, and viscosity of NaF-BeF 2 systems were determined using custom devices. Using the fitting relationships and simulations, the extrapolative data were also successfully obtained under the critical temperatures. The local structure including bond lengths, coordination structures and the potential of mean force, was further simulated by ab initio molecular dynamics in the temperature range of 673–1123 K. The coordination of Na and Be is predominantly characterized by six-fold and four-fold, respectively. Moreover, of Be-F bond is 7 times than Na-F bond, which suggests the stronger stability of Be-F bond in molten NaF-BeF 2 .
研究领域:
材料科学
·
核能工程
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DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 8
·1021
·
IF 2.9
Tao Jiang,Junjie Xu,Chuntao Ge,Jie Pang,Jun Zhang,Geir Martin Haarberg,Saijun Xiao
Molten salt electrophoretic deposition is a novel method for preparing coatings of transition metal borides such as TiB2, which has emerged in recent years. To broaden the applications of transition metal boride coatings prepared by this method, this paper investigates the corrosion resistance of TiB2coatings, produced through molten salt electrophoretic deposition, to liquid zinc. By applying a cell voltage of 1.2 V (corresponding to an electric field of 0.6 V/cm) for 1 h in molten NaF-AlF3, the nanoscale TiB2particles migrated to the cathode and were deposited on the graphite substrate, forming a smooth and dense TiB2coating with a thickness of 43 μm. Subsequently, after subjecting the TiB2-coated graphite to corrosion resistance tested in molten zinc for 120 h of continuous immersion, no cracks were observed on the surface or within the coating. The produced TiB2coating demonstrated excellent corrosion resistance. These research results suggest that the fully dense TiB2coating on the graphite substrate, produced through molten salt electrophoretic deposition, exhibits excellent corrosion resistance to liquid zinc.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
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DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2021
·Vol. 32
·期 4
·998-1003
·
IF 4.833
Jianmin Liu,Tao Wang,Qiwei Gao,Weihui Jiang,Lifeng Miao,Guo Feng,Feng Jiang
Zirconia whiskers were successfully fabricated by molten salt method, using NaVO 3 /NaF as composite molten salt. The effect of NaF content on the growth of zirconia whiskers were systematically investigated by XRD, FE-SEM, TEM, SAED, HR-TEM, Raman and XPS. When optimized NaF content is 10%, the obtained zirconia whiskers with monoclinic crystal structure show an length of 1–3 μm and diameters of 100–300 nm. The as-prepared whiskers preferentially grow along [0 0 1] direction and exhibit a smooth surface without distinct defects. Fluoride is proved to play an important role in the growth of zirconia whiskers. On the one hand, fluoride can be served as mass transfer agent, promoting the dissolution and precipitation of ZrO 2 through the mass transfer process of fluorozirconate species. On the other hand, fluoride can act as morphology controlling agent, enhancing the anisotropic growth of ZrO 2 crystals by the formation of fluorine-terminated surface.
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高影响因子
Coatings
·
2023
·Vol. 13
·期 7
·1266
·
IF 3.4
Qian Kou,Weiliang Jin,Chuntao Ge,Jie Pang,Jun Zhang,Geir Martin Haarberg,Saijun Xiao,Ping Wang
In this paper, electrodeposition of a molybdenum coating was conducted in Na3AlF6-NaF-Al2O3-MoO3molten salts at 930 °C to investigate the availability of preparation of thick molybdenum coatings. The effects of current density and electrodeposition time on the morphology of the produced molybdenum coating were studied. With the increase of current density (10~70 mA·cm−2), the coating thickness was increased from 10 μm to 30 μm, with all the current efficiency above 97%. Under a current density of 30 mA/cm2, with the rise of electrodeposition time (10~60 min), three stages of the deposit growth were observed, including the formation of a large number of fine crystals, transformation into fibrous morphology and well-developed faceted grains. The formation of a large number of fine crystals at the initial stage of the electrodeposition could facilitate electroplating molybdenum coatings with good quality at higher current density and longer duration. Thus electrodeposition at a current density of 100 mA·cm−2for 3 h has been performed, resulting in the preparation of relatively flat, dense, and coherent molybdenum coatings with a thickness of 140 μm on a nickel substrate, with a current efficiency above 85%. It is anticipated that the electrodeposition of molybdenum coatings in the present molten system is suitable for electroplating thick molybdenum coatings.Keywords:cryolite-based molten salt;electrodeposition;molybdenum coating;nickel substrate
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Chuntao Ge,Yong Yuan,Rong Li,Jie Li,Zhuo Zhao,Tao Zhu,Junjie Xu,Wenjuan Qi,Qian Kou,Jun Zhang,Saijun Xiao
Emerging as a highly promising technique, molten salt electrophoretic deposition (MS-EPD) enables the fabrication of protective ultra-high-temperature ZrB 2 coatings. However, its practical application has been constrained by the slow deposition rates (<0.4 μm/min) and limited coating thicknesses (<25 μm) achieved in conventional chloride or chlorofluoride-based molten salt systems. Herein, we reported a novel electrophoretic deposition (EPD) strategy that utilized a high-temperature fluoride molten salt system (NaF-AlF 3 , 1100 °C), which successfully overcame this kinetic limitation. This method generated ultrasmall ZrB 2 nanoparticles (NPs) with a mean particle size of 7.9 nm in the molten salt via an in-situ borothermal reduction reaction. Using these NPs as building units, a high deposition rate of 0.74 μm/min was achieved, enabling the fabrication of a fully dense, high-quality coating over 50 μm thick within 1 h. The resulting coating exhibited outstanding comprehensive properties including a nanoindentation hardness of 16 GPa, an elastic modulus of 172 GPa, and exceptional protection capability in an oxidizing environment at 1000 °C. Furthermore, this work revealed that the coating growth was dominated by an oriented attachment crystallization (OA) mechanism. This study not only established a novel pathway for the efficient and low-cost production of thick, high-performance ZrB 2 coatings, but also provided new fundamental insights into understanding and controlling the assembly behavior of nanocrystals in molten salt systems.
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DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Xinmeng Zhang,Xunwei Wang,Peizhong Feng
Topical fluoride administration has been widely recognized as an effective strategy for caries prevention. Hydrogels, owing to their unique hydrated networks and tunable physicochemical properties, have emerged as promising candidates for localized fluoride delivery. However, the controlled sustained release of fluoride ions (F–) from hydrogels in moist environments continues to present significant technical challenges. In this study, we constructed a fluoride-loaded hydrogel system through a copolymerization strategy of chitosan (CS), acrylic acid (AA), and acrylamide (AM). The mesh size of the hydrogel was significantly reduced by the synergistic cross-linking effect of the hydrogen bond network and Zr4+-carboxyl coordination, thereby achieving the sustained release performance of F–. Benefiting from the ion cross-linking sites provided by hydrated zirconium ions and the hydrogen bond interactions, the hydrogel shows remarkable property enhancements: tensile stress increases by 159% (from 0.37 to 0.96 MPa) while swelling ratio decreases by 97.4% (from 4600 to <120%). The in vitro release experiment results showed that the cumulative release rate at 24 h decreased from 90 to 24%, effectively avoiding the initial burst release phenomenon and significantly prolonging the release time. The release mechanism was further investigated by fitting the in vitro release data to the zero-order model, the first-order model, and the Korsmeyer–Peppas model. The kinetic model fitting results indicated that the Peppas model had the best fitting effect, with a correlation coefficient (R2) of 0.9875 and a diffusion exponent n = 0.4060, suggesting that it conformed to the Fickian diffusion mechanism.
研究领域:
材料科学
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口腔医学
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药剂学
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DOI
高影响因子
ELECTROCHEMISTRY
·
2019
·Vol. 87
·期 3
·142-147
·
IF 1.293
Handong JIAO,Junxiang WANG,Donghua TIAN,Shuqiang JIAO
The electrochemical behaviour of Ti4+ (K2TiF6) at liquid tin and bismuth electrodes has been investigated by cyclic voltammetry, square wave voltammetry and chronoamperometry in the LiF–NaF–KF eutectic melt. Result shows that, on the liquid metal electrodes, the reduction reaction of the solvent occurs at more positive potential than that on the inert molybdenum electrode. There are two reduction steps including Ti4+ + e = Ti3+ and Ti3+ + 3e = Ti (Ti–Sn alloys) on the liquid tin electrode within the electrochemical window of the melt. However, only one redox process corresponding to the redox of the Ti4+/Ti3+ couple is observed at liquid bismuth electrode.
研究领域:
电化学
·
材料科学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 30
·62736-62749
·
IF 5.6
Hesham Y. Amin,A.S. Abdulraouf,Mahmoud S. Ghanem,Moukhtar A. Hassan
This article reports on the impact of sodium fluoride (NaF) on the structure and properties of oxyfluoride borate glass activated by small portions of nickel ions and prepared by the melt-quenching method. The structural and optical properties were investigated using mass density, infrared spectra, optical spectra, ligand field environment and non-linear optical behaviors. Structural variations were reported by the increase in experimental density by 19 % and empirical density by 5 %, while the molar volume decreased by 32 % for experimental molar volume and 24 % for empirical molar volume. Furthermore, adding sodium fluoride enhanced the network conversion from trigonal to tetrahedral structural units ( N 4 ratio increased from 31.66 % to 56.12 %), forming new ones such as BO 3 F, and BF 4 , with observed decrease in non-bridging bonds ( N B O + F decreased from 18.20 % to 4.04 %). Regarding optical activity, a set of absorption bands of nickel ions within visible and near infrared regions were observed. The glass color confirmed the existence of Ni 2 + ions in octahedral coordination form. However, the change in the glass color from yellow to yellow-orange is due to the intensity of ligand field around octahedral Ni 2 + ions. Furthermore, the ligand field strength (10Dq) augmented (10650–10905 cm − 1 ), while the Racah B and C parameters decreased (483-445 cm − 1 ) and (2327-2221 cm − 1 ), respectively. Such reversed trends are due to the intensive electron delocalization at Ni 2 + ions and confirm the covalent character in the Ni 2 + -ligand bonds. The increase in sodium fluoride content leads to a decrease in optical band gaps from 3.50 to 3.21 eV and an increase in Urbach energy from 0.14 eV to 0.19 eV due to the disorder enhancement. Overall, the optical non-linear characteristics of these oxyfluoride borate glasses are enhanced with more addition of NaF, stemming from an observed enhancement in refractive indices. The current article affords good structural-optical relations, offering a decent nickel doped oxyfluoride borate glass host for optical applications.
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DOI
高影响因子
SOLID STATE IONICS
·
2024
·
IF 3
Wenxuan Wang,Haohao Sun,Shan Hu,Zelang Jian,Wen Chen
Solid-state sodium metal batteries have attracted much attention due to the high energy density and safety. However, the poor physical contact and morphology instability at the anode interface decrease the dendrite tolerance of Na 3 Zr 2 Si 2 PO 12 at high current density . Herein, NaF/NaZn 13 multi-functional artificial layer is prepared by in-situ thermal decomposition and alloying reaction. The anode interface resistance is significantly decreased from 1258.5 to 41.5 Ω cm 2 due to the improved sodiophilic property. Moreover, the NaF/NaZn 13 interphase can promote the Na + diffusion and suppress the electron leakage at the interface, enabling a high critical current density of 2.4 mA cm −2 and a stable Na stripping/plating at 0.5 mA cm −2 for 500 h and 0.7 mA cm −2 for 200 h. The Na 3 V 2 (PO 4 ) 3 /Na all-solid-state battery shows excellent rate and cycling performance. This work proves the feasibility of fluorinated multifunctional interphase in realizing high current and dendrite tolerant solid-state electrolytes.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
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DOI
高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Xiaoqiao Hu,Fuming Chen,Zishuai Zhang,Shaofeng Wang,Jinyuan Liang,Yumeng Shi,Ching-yuan Su,Qiang Ru,Qinyu He,Xianhua Hou,Benli Chu
The NaF dual-ion battery was demonstrated as potential battery where fluoride and sodium ions were extracted from NaF electrolyte respectively during discharging; while the charging process causes the release of ions to the electrolyte. However, previous studies reveal that electrode configuration with large-sized particles will significantly reduce the energy density and stability. Herein, we proposed a novel hybrid electrode assembly of bismuth nanoparticles/carbon nanotubes (nano-Bi@CNTs), which could achieve the excellent electrochemical stability. The new NaF dual-ion battery, consisting of nano-Bi@CNTs-Na 0.44 MnO 2 (NMO), demonstrates a high specific capacity of 109.5 mAh/g after 80 cycles with 100 mA/g current density. Moreover, the electrochemical mechanism of fluoride ion in this system was comprehensively investigated. The current research is significant for the novel anion energy storage system.
研究领域:
电化学
·
储能
·
材料科学
·
纳米技术
·
电池技术
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2020
·
IF 5.065
Min Tan,Tao Li,Bo Shang,Henan Cui
The behavior of the ions in the molten NaF-AlF 3 salts plays a significant role in aluminium reduction process. Many experimental and modelling works have been carried out to investigate the ionic composition of the molten cryolite, which are still controversial. In this study, a recent thermodynamic model was introduced to compare with the Temkin model, which was assumed to consist of F − , AlF 4 − , AlF 5 2− , AlF 6 3− , Al 2 F 7 − , Al 2 F 9 3− , Al 2 F 10 4− , and Al 3 F 14 5− . The thermodynamic calculations were performed to investigate the influence of the cryolite ratios on the ionic composition of the molten NaF-AlF 3 and calculate the fractions of all the possible anions in the molten salts . On the other hand, the Raman spectra of the fluoro-aluminate ionic clusters were obtained by the quantum chemical calculations considering the existence of the cations Na + and the number of the ionic pairs in the structural models of the ionic clusters, which were used to parsing the high temperature in situ Raman spectrum of the molten cryolite. The ionic composition of the molten salts was discussed based on the thermodynamic calculations and the fitting results of the high temperature in situ Raman spectrum of the molten cryolite.
研究领域:
材料科学
·
物理化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）