JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jie Ding,Jirong Mou,Sisi Lin,Yunlong Deng,Hongxi Liu,Xiangdong Ma,Jujun Yuan,Xiaokang Li
Solid polymer electrolytes (SPEs) are regarded as promising candidates for developing high energy–density Li metal batteries because of their flexible processability and low cost. However, the application of SPEs is still inherently impeded by the mediocre ionic conductivity and unstable Li/electrolyte interface. In this work, the silver fluoride (AgF) additive is introduced to optimize the ionic conductivity of PEO and induce the formation of stable solid electrolyte interphase (SEI) layer between Li metal and SPEs interface, thereby inhibiting the growth of lithium dendrites. AgF can be complex with anions to promote the dissociation of Li + -TFSI − ion pairs, improving the mobility of Li + ions, as confirmed by experimental and computational studies. Moreover, the AgF converses to LiF and Li-Ag alloys via in-situ electrochemical reaction with Li anode, which can not only prevent the Li metal from parasitic reactions, but also reduce the concentration gradient of Li + ions. Hence, the Li|Li symmetric cell containing PEO-3 % AgF electrolyte demonstrates stable cyclability for 1800 h at 0.2 mA cm −2 (60 °C). When paired with a commercial LiFePO 4 cathode, the resulting all-solid-state Li-metal battery delivers remarkable cyclic performance of 126.9 mAh g −1 after 400 cycles (0.5 C). This work provides a new approach for the development of composite solid-state electrolyte films and lithium metal anodes in all-solid-state batteries.
研究领域:
材料科学
·
能源存储与转换
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DOI
PubMed
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Weijia Xie,Jianping Zhou,Sumei Huang,Wei Ou-Yang,Wenhui Xie,Zhuo Sun,Xiaohong Chen
Plasmon enhanced perovskite solar cells (PSCs) incorporated with AgAl and Au composite nanoparticles (NPs) isolating from AgAl metal electrode with ultra-thin LiF spacer were investigated. PSCs with AgAl-Au composite NPs got 17.02% of the power conversion efficiency (PCE), which is 11.10% higher than PCE (15.32%) of the control PSC with only AgAl electrode. Furthermore, the hysteresis effect of PSCs with LiF modified AgAl and Au composite NPs can be neglected compared to the control cells without NPs and LiF spacer. In the meanwhile, carrier transport and collection probabilities of PSCs with AgAl and Au composite NPs were increased to 96.86% from 89.51% in control cells, indicating the improved electron transport and extraction ability. The enhanced PCEs of PSCs with AgAl(3 nm)/Au(2 nm)/LiF(1 nm) are attributed to the improved light absorption of perovskite layer and the reduced contact barrier at metal electrode, which can be supported with its enhanced photon-to-electron conversion efficiency (△IPCE) and the disappeared negative capacitive behavior. Furthermore, the obviously reduced work function values of AgAl-Au composite NPs and AgAl metal electrode after LiF modification were observed with ultraviolet photoelectron spectroscopy spectra. Our results indicate that thermally evaporating a ultra-thin LiF spacer can well inhibit the energy dissipation of plasmon effects of AgAl-Au composite NPs and reduce the contact barrier between PCBM and AgAl metal electrode, which is an efficient strategy to achieve efficient plasmon-enhanced perovskite solar cells .
研究领域:
光伏技术
·
纳米材料
·
等离激元学
·
太阳能
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 8.3
Jing Pan,Yongde Yan,Yanghai Zheng,Shengrong Guo,Xuepeng Wang,Sihao Wang,Zhiguang Du,Kaijie Wang,Yun Xue,Kai Zhu
A method for the preparation of LaNi 5 alloy by molten salt co-reduction is reported. The electrochemical co-reduction process of La(III) and Ni(II) as well as the reaction process of intermetallic compounds formation were investigated. It was confirmed that the diffusion coefficient of La(III) in LiF–CaF 2 molten salt is 4.684–8.098 × 10 −5 cm 2 s −1 at temperatures of 1113–1183 K. And the reaction activation energy was obtained to be 78.86 kJ mol −1 . And, the exchange current densities of La(III)/La(0) were determined by the Tafel (0.149–0.251 A cm −2 ) and linear polarization (0.143–0.204 A cm −2 ) methods. Furthermore, five different La–Ni intermetallic compounds were detected by studying the co-reduction reaction of La(III) and Ni(II) ions. Meanwhile, the formation potentials of La–Ni intermetallic compounds were defined by various electrochemical tests. In addition, the LaNi 5 alloy was obtained via potentiostatic electrolysis according to the electrochemical results. This study provides new insights into the electrochemistry of the LiF–CaF 2 –LaF 3 –NiF 2 molten salt and enhances the understanding of the molten salt electrolytic preparation of La–Ni alloys from co-reduction.
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DOI
高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Huiyan Wu,Hailong Huang,Lingzhi Cao,Yiyang Liu,Jianxing Dai,Cuilan Ren,Min Ge,Yuan Qian,Shuxian Hu,Xiaobin Fu,Hongtao Liu
In this study, it was demonstrated that Na+ ionic doped crystals could be formed during the solidification of FLiNaK melts. The ionic adulterating behavior between Li+, Na+, and K+ ions was investigated in detail by using various 1D/2D solid-state NMR methods and theoretical calculations. 2D 19F–23Na and 19F–7Li HETCOR NMR showed that the Na+ ions could be doped into LiF and KF crystals to generate new adulterating phases. Furthermore, the doped ionic Na+ ions exhibited different dynamics in LiF and KF crystals, which is correlated to the bonding length of the lattice and the Na–F coordinated interactions. This study provides more insights into the ionic doped crystal phase formation in such simple alkali metal fluorides, which may be of greater significance in the application as optical devices.
研究领域:
材料科学
·
物理化学
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产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2023
·
IF 8.3
Mingyong Jia,Fei Chen,Xipeng Tan,Yaling He,Yueqi Wu,Qiang Shen
The high-temperature corrosion behavior of an AlN/Mo functionally graded material (FGM) under the Li/LiF-LiCl-LiBr vapor has been investigated. It is suggested that the Li vapor diffuses along the AlN and AlN/Mo grain boundaries and enters the interior of adjacent AlN grains, leading to the disintegration of AlN grains and subsequent failures. The 3D Mo networks are barely corroded, thus preventing cracking that may occur due to the inconsistent deformation inside the FGM. This work unravels the high-temperature corrosion mechanisms for the AlN/Mo FGM. Meanwhile, the operating temperature threshold for the liquid metal batteries employing Mo/AlN/Mo seals is determined to be ∼ 600 °C.
研究领域:
材料科学
·
腐蚀科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Changchao Su,Yuheng Sun,Hongqun Tang,Youbin Wang,Fuxu Tao,Zhengbin Xu,Chunhua Wei,Zezuo Jiang,Shiqiang Wei
Rare-earth metal neodymium is an important raw material for NdFeB permanent magnets, and its demand has significantly increased in recent years. Molten salt electrolysis is the main method for the production of metal neodymium, so the study of the electrodeposition process of neodymium ions in molten salt at the cathode is of great significance for the production of metal neodymium. In this paper, the electrochemical deposition process of neodymium ions on a tungsten working electrode was studied in a LiF-NdF 3 -Nd 2 O 3 molten salt system using electrochemical methods such as cyclic voltammetry and open circuit potential. Additionally, the influence of LiF content in the molten salt on the electrodeposition process was analyzed. The experimental results indicate that the reduction of neodymium ions in the LiF-NdF 3 -Nd 2 O 3 molten salt system consists of two stepwise quasi-reversible redox reactions: Nd(III) → Nd(II) and Nd(II) → Nd(0). The corresponding reduction peak potentials are −0.78 V and −1.19 V, respectively. The Nd(III) → Nd(II) reaction is solely diffusion-controlled, while the Nd(II) → Nd(0) reaction is governed by both surface control and diffusion control in the electrochemical process. The increase in LiF content in the molten salt leads to a shift of the cathodic overpotential in the positive direction. When the LiF content is high, the reduction of neodymium ions on the electrode becomes unstable, making it unfavorable for the deposition of metal neodymium on the tungsten electrode.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Zhilong Wang,Chao Zhang,Zhongcheng Li,Zeyu Teng,Yu Wang,Kanghua Chen,Changjun Zhu
The uncontrolled growth of lithium dendrites and unstable solid-electrolyte interface (SEI) film limit the practical application of lithium metal anodes. In this study, we report a synergistic strategy utilizing a Li-Na alloy and fluoroethylene carbonate (FEC) for the in-situ construction of LiF/NaF-rich hybrid SEI film. This approach inhibits the growth of lithium dendrites and mitigates the volume expansion of lithium metal anodes during repeated plating/stripping. The results indicate that Na + is precipitated from the Li-Na alloy anodes during cycling, with Na + preferentially depositing on the surface of active Li crystals. Meanwhile, Li + is forced to deposit in the inactive regions around Na, thereby inhibiting the growth of lithium dendrites. The LiF/NaF-rich hybrid SEI film, which process high ionic conductivity and mechanical strength, form on the surface of Li-Na alloy anodes, alleviating the volume expansion of lithium metal anodes. When the molar ratio of Li/Na is 16, the Li-Na alloy exhibits excellent cycling stability and low overpotential. The Li-Na alloy||Sulfurized polyacrylonitrile (SPAN) full cell demonstrates a high reversible capacity of 630 mAh g −1 at 1000 mA g −1 , with 70 % capacity retention after 300 cycles, significantly higher than Li||SPAN (48 %). This strategy presents a potential solution for the practical application of long-life and high energy density lithium-sulfur batteries.
研究领域:
材料科学
·
电化学
·
储能技术
·
电池技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Bingkun Hu,Wei Yu,Bingqing Xu,Xue Zhang,Ting Liu,Yang Shen,Yuan-Hua Lin,Ce-Wen Nan,Liangliang Li
Garnet-type solid electrolytes are suitable for solid-state batteries with a lithium metal anode, but it is challenging to fabricate garnet-based lithium metal batteries with a long cycle life at high rates. This study demonstrates that a mosaic Li7Sn3/LiF interface layer formed in situ on the surface of garnet-type Li6.75La3Zr1.75Ta0.25O12 (LLZT) through the reaction between a SnF2 coating layer and a lithium metal enables stable, high-rate cycling for LLZT-based batteries. The interface layer possesses a nanomosaic structure of Li7Sn3 nanoparticles and surrounding LiF, enabling fast lithium-ion conduction. Meanwhile, ion insulating Li2CO3 on the surface of LLZT pellets is completely removed by SnF2 during the formation of the interface layer, which reduces the ion diffusion barrier from LLZT to the lithium anode. Benefiting from the advantageous interface layer, LiFePO4∥SnF2-LLZT∥Li cells show superior cycle performance over 200 cycles at 1 C (272 μA cm–2) with a capacity of 140.6 mAh g–1 (94.6% retention) at 30 °C. Even at 2 C, a capacity of 102.9 mAh g–1 remains after 200 cycles. This work provides an optimal interfacial structure to enhance lithium-ion migration between garnet electrolytes and a lithium metal and paves the way for developing high-performance solid-state batteries.
研究领域:
材料科学
·
电化学
·
储能
·
固态电池
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 3
·117895
·
IF 6.2
Deyin Liang,Xiaoqiang Li,Wenlong Yin,Chaoyang Zhang,Bo You,Shengquan Yu
The effects of Y₂O₃–LiF sintering additives on the microstructure, thermal conductivity, flexural strength, and dielectric properties of AlN-based ceramics were systematically investigated. Six different compositions were prepared via ball milling, hot-press sintering, and annealing. XRD and Rietveld refinement confirmed a hexagonal structure for all samples, with changes in the Al–N bond length along the C-axis. SEM analysis revealed that the Y₂O₃–LiF additives modified the morphology of the secondary phase while maintaining a high bulk density. Moreover, annealing resulted in grain boundary purification. As LiF content increased, the second-phase morphology evolved from oval to strip-like, and annealing reduced this phase, improving overall performance. Raman spectroscopy indicated lattice expansion and a blue shift with increasing LiF content. Dielectric analysis of the 2 wt% LiF–Y₂O₃ sample revealed a dielectric constant of 8.56, a dissipation factor of 2.1 × 10⁻⁴, and a high activation energy of 1.38 eV.
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DOI
高影响因子
ELECTROPHORESIS
·
2012
·Vol. 34
·期 3
·409-416
·
IF 3.303
Juan Qiao,Li Qi,Huijuan Yan,Yaping Li,Xiaoyu Mu
l -Asparaginase ( l -Asnase) can suppress the growth of malignant cells by rapid depletion of two essential amino acids, l -glutamine ( l -Gln) and l -asparagine ( l -Asn). To study the cytotoxic effect and the secondary complications of l -Asnase in the treatment of acute lymphoblastic leukemia, the development of a novel enzyme reactor of l -Asnase for the hydrolysis of l -Gln, employing the enzyme-gold nanoparticle conjugates in capillary, was reported in this work. First, a microchip CE (MCE)-LIF was established for the separation of l -amino acids ( l -Gln and l -glutamic acid) and studying the hydrolysis of l -Gln by using l -Asnase enzyme reactor. Then, using l -Gln as target analyte, the enzyme kinetics of l -Asnase in free solution, enzyme-gold nanoparticle conjugates (E-GNP), and the enzyme-gold nanoparticle conjugates immobilized in capillary (E-GNP-C) were investigated in detail with the proposed MCE-LIF method. Moreover, for optimizing the enzymatic reaction efficiency, three important parameters, including the length of capillary, the enzyme concentration reacted with gold nanoparticle and the amount of l -Asnase immobilized on the gold nanoparticle, have been studied. Owing to the high specific activity, the E-GNP-C enzyme reactor exhibited the best performance for the hydrolysis of l -Gln.
研究领域:
生物化学
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医学
·
纳米技术
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 30
·65060-65066
·
IF 5.6
Hui Yan,Yue Ma,Yong Shang,Yun Wang,Kaixin Song,Guoda Xie,Bo Wu,Xingang Ren,Xianliang Wu,Gang Wang
A series of novel low-permittivity microwave dielectric ceramics with the compositions of (1- x ) BaY 2 Si 3 O 10 - x Ba 5 Si 8 O 21 (0.3 ≤ x ≤ 0.7) and 0.4 BaY 2 Si 3 O 10 -0.6 Ba 5 Si 8 O 21 - y wt% LiF (1 ≤ y ≤ 3) were successfully synthesized using solid-state reaction sintering. The phase evolution and microwave dielectric properties of these ceramics were systematically studied. X-ray diffraction analysis indicated the coexistence of BaY 2 Si 3 O 10 and Ba 5 Si 8 O 21 phases in the (1- x ) BaY 2 Si 3 O 10 - x Ba 5 Si 8 O 21 system, with no secondary phases detected. In contrast, an additional Ba 2 Si 3 O 8 phase was identified in the LiF-modified composition (0.4 BaY 2 Si 3 O 10 -0.6 Ba 5 Si 8 O 21 - y wt% LiF (1 ≤ y ≤ 3)). Moreover, the Ba 5 Si 8 O 21 phase was found to effectively tune the temperature coefficient of resonant frequency (τ f ) to near-zero values in both systems. Excellent microwave dielectric properties were obtained for the 0.4 BaY 2 Si 3 O 10 -0.6 Ba 5 Si 8 O 21 - 2 wt% LiF ceramic, exhibiting a permittivity ( ε r ) of 7.45, a quality factor ( Q × f ) of 13,152 GHz, and a τ f value of −3.17 ppm/°C. This composition also showed good chemical compatibility with silver electrodes, suggesting its potential for use in low-temperature co-fired ceramic (LTCC) applications.
研究领域:
材料科学
·
陶瓷
·
微波介质材料
·
电子材料
·
低温共烧陶瓷（LTCC）技术
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Lei Zhang,Bing Sun,Qinghua Liu,Lin Song,Teibang Zhang,Xiaobo Duan
Extensive research has focused on the lithium (Li) metal anode, but progress in developing this technology has been hindered by the formation of lithium dendrites and their irreversible effects. In this study, an inorganic LiF-Li 3 N-rich solid electrolyte interface (SEI) is established in ether electrolyte through the direct use of 2,3-difluoro-5-(trifluoromethyl)pyridine (DP) to enable uniform Li deposition and enhance interfacial properties for a stable Li metal anode. Theoretical calculations show that DP has a higher tendency to decompose on lithium metal. An alternative approach involving the inclusion of additional anions into the solvation sheath of Li + ions using weakly solvating solvents is proposed. During Li plating, DP is reduced to form a LiF and Li 3 N-rich SEI, resulting in a heterogeneous SEI layer on the Li metal anode surface. This approach allows stable cycling of Li|Li cells for over 1800 h at current densities of 5 mA cm −2 and 15 mAh cm −2 . The method presented here has potential significance in the identification of suitable electrolytes for future research on lithium metal anodes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）