CERAMICS INTERNATIONAL
·
2013
·Vol. 40
·期 2
·3819-3822
·
IF 1.789
Xiaoping Xu,Tianci Yang,Miao Shui,Zhangchao Lu,Shan Gao,Jie Shu,Weidong Zheng,Liangliang Cheng,Lin Feng,Yuanlong Ren
A series of Nasicon-type solid electrolytes Li 1+2 x +2 y Al x Zn y Ti 2− x − y Si x P 3− x O 12 was synthesized by conventional solid state ceramic route. X-ray diffraction and Rietveld whole pattern refinement were applied to investigate the phase, structure and the unit cell parameters of those solid electrolytes . EIS complex impedance method was carried out to study the Li + conductivity. The results showed that Li 1+2 x +2 y Al x Zn y Ti 2− x − y Si x P 3− x O 12 with x =0.1 y =0.5 presents highest ionic conductivity 7.2×10 −5 S cm −1 at ambient temperature and 2.0×10 −3 S cm −1 at 473 K. The activation energy of Li + migration was calculated to be ca. 20 kJ mol −1 . The influence of Zn 2+ element on the structure and Li + mobility was preliminary explained.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Keyi Sun,Yuxuan Liu,Wenbin Fei,Yian Wang,Huazhang Guo,Kexin Rao,Mengting Deng,Yulei Sui,Ling Wu
Na 4 MnCr(PO 4 ) 3 , a manganese-based NASICON-type phosphate cathode material, is attracted considerable attention due to its high voltage and energy density. However, its practical application is hindered by poor electronic conductivity and inferior sodium ion diffusion kinetics. In this study, trace La 3+ is utilized to optimize the lattice structure of Na 4 MnCr(PO 4 ) 3 due to its unique energy level structure. La 3+ doping significantly enhances the local environment of the Mn-O bond and stabilizes the lattice structure by improving covalency, thereby mitigating Mn dissolution during charge–discharge cycles. Additionally, the large ionic radius of La 3+ promotes the sodium ion transport kinetics by expanding the cell volume and facilitating rapid sodium storage. As a result, the optimal Na 4 MnCr 0.995 La 0.005 (PO 4 ) 3 /C sample demonstrates an impressive initial discharge specific capacity of 124.5 mAh g −1 at 0.1C and superior cycling stability with a capacity retention of 70.2 % after 500 cycles at 5C. Furthermore, density functional theory calculations indicate that La 3+ doping can enhance conductivity and reduce the energy barrier for sodium ion diffusion. This study presents an effective and cost-efficient doping strategy for modifying high-energy density NASICON-type phosphate cathode materials, showing promising potential in the field of sodium ion batteries.
研究领域:
材料科学
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电化学
·
能源存储
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无机固体化学
·
计算材料学
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DOI
高影响因子
SOLID STATE IONICS
·
2014
·
IF 2.112
Jing Yang,Zhen Huang,Bingxin Huang,Jing Zhou,Xiaoxiong Xu
NASICON-type structure lithium ion conductors have been considered as promising solid electrolytes due to its very high Li + -ion conductivity and chemical stability. In this paper, NASICON-type structured Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) glass–ceramics are prepared from crystallization of glass powders, which are obtained by a simple melt-quench method. NH 4 H 2 PO 4 , H 3 PO 4 , P 2 O 5 and H 3 PO 4 &Al(PO 3 ) 3 are used as phosphorus sources, respectively. The obtained LAGP glass–ceramics are systematically characterized with X-ray diffraction, field emission scanning electron microscopy , differential scanning calorimetry and AC impedance spectroscopy . The different impurities are formed depending on the phosphorus sources, which further influence the microstructure. As a result, the lithium ion conductivity is significantly affected by the phosphorus sources. The highest conductivity of 5.21 × 10 − 4 S·cm − 1 is obtained when H 3 PO 4 is used as the phosphorus source under optimum conditions.
研究领域:
材料科学
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固态离子学
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无机非金属材料
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能源材料
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电化学
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DOI
高影响因子
Advanced Sustainable Systems
·
2023
·Vol. 9
·期 7
·2300233
·
IF 7.1
Sijie Yu,Yuwei Chen,Yangyang Huang,Huabin Sun,Yu Xie,Sihao Du,Wei Luo
NASICON (NAtrium Super Ionic CONductor)-structured Na 4 MnCr(PO 4 ) 3 has attracted attention as a promising cathode for sodium-ion batteries due to its high operating voltage and specific capacity contributed by multielectron reactions. Unfortunately, its intrinsic low electronic conductivity significantly hinders the release of specific capacity and rate capability, preventing its practical application. Herein, a carbon layer with dual conductive networks connected by chain-like Ketjen black (KB) is built on the surface of Na 4 MnCr(PO 4 ) 3 material. This novel Na 4 MnCr(PO 4 ) 3 /C@KB composite material exhibits improved rate capability of 61.2 mAh g −1 at 2 C compared to 19.5 mAh g −1 of Na 4 MnCr(PO 4 ) 3 /C and high reversible capacity of 88.0 mAh g −1 at 1 C with 73% capacity retention after 100 cycles. The enhanced electrochemical performance can be ascribed to an increase of electronic conductivity enabled by the dual conductive 3D network construction and an adequate infiltration of electrolyte by substantial pores existence in carbon layer. A promising dual conductive network design strategy is demonstrated here for improving the performance of NASICON-structured cathodes.
研究领域:
材料科学
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电化学
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能源存储
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无机化学
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纳米材料
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固态离子学
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DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Yuting Shi,Mingyang Xin,Pingbo Xu,Yutao Wang,Zhaotong Yang,Haiming Xie,Yulong Liu
Oxide-based solid-state batteries (OSSB) have gained significant attention due to their inherent high safety and air stability. However, application of OSSB is limited by thick electrolytes and large interfacial resistance generated by side reactions. This work employs a solvent free process to prepare a thin Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) film with a thickness of 90 μm, achieving a high ionic conductivity of 0.76 mS cm −1 at room temperature. Such a high ionic conductivity originates from the filling of LAGP particles with high-conductive secondary phase, thereby forming fast interfacial conduction paths. Coupled with Li metal anode and LiFe 0.4 Mn 0.6 PO 4 (LFMP) cathode (cut-off voltage of 4.3 V), the OSSB delivers a discharge capacity of 155 mAh g −1 . Our thin-film LAGP electrolyte shows an opportunity to overcome the two obstacles, and the development of high safety OSSB becomes possible in the future.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Haolong Tan,Shan Xiao,Wensheng Yang,Quan Xie,Yunjun Ruan,Qian Chen,Tinghong Gao
The rapid advancement of wearable electronics and miniaturized medical devices demands high-safety, low-cost energy storage. Sodium-ion batteries (SIBs) attract attention for their resource advantages and lithium-ion battery-like electrochemical mechanisms, but their performance is limited by Na + ’s larger ionic radius—causing severe lattice stress and electrode degradation. This study focuses on NASICON-type Na 3 V 2 (PO 4 ) 3 (NVP) cathodes, developing an innovative sol–gel spin-coating method combined with rapid thermal annealing (RTA) to grow high-quality films on carbon-coated Ti substrates. Multi-scale characterization confirms the films have a typical NASICON structure, smooth surface, uniform element distribution, and stable vanadium valence. Electrochemically, the film electrode delivers an initial reversible capacity of 83mAh g −1 at 1 A g −1 (70.9 % of theoretical value) and retains 81.3 % capacity after 300 cycles. Cyclic voltammetry shows reversible redox peaks at 0.49/0.66 V, and electrochemical impedance spectroscopy gives a low ohmic resistance of 13.3 Ω. Notably, RTA enhances film crystallinity and densification while simplifying conventional 8–10 h multi-step sintering into a 1-h single step, offering an efficient, low-energy industrial solution for scalable all-solid-state SIB production.
研究领域:
材料科学
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储能技术
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电化学
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薄膜技术
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产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Jinlong Ling,Zhaochi Zhang,Xuanlong He,Junyang Chen,Chengrun Yu,Yuyao Wu,Xunqi Tan,Qiang Ru
NASICON-type Na3V2(PO4)3 material features an open three-dimensional framework structure, which has garnered extensive attention due to its high ionic conductivity and structural stability. However, poor electronic conductivity, harmful phase transitions, and inadequate rate performance hinder their practical applications. Herein, a high-entropy Na3.185V1.725Mn0.055Co0.05Cu0.045Cr0.045Al0.045Ni0.035(PO4)3 (HE-NVTMP) cathode is elaborately crafted by multielement doping strategy. The cathode renders a high initial specific capacity of 197.7 mAh g–1 and a large energy density of 552 Wh kg–1 at 0.2 C. Additionally, the cathode maintains stable long-term cycling durability and minimal capacity fade under high 10 C-rate conditions (1100 cycles with 80.95% capacity retention). The synergistic high-entropy doping activates the V4+/V5+ redox couple, enhancing Na+ diffusion kinetics and achieving high reversibility. In situ XRD analysis reveals that the high-entropy effect optimizes the crystal structure and achieves a low volumetric strain (3.4%) by suppressing the two-phase reaction (Na3V2(PO4)3 → Na3-xV2(PO4)3 → NaV2(PO4)3). The multielement synergy promotes the occurrence of single-phase reaction and inhibits phase separation. The full cell of HE-NVTMP//hard carbon delivers a high initial capacity of 107.7 mAh g–1 at 0.5 C and an excellent rate performance (79.1 mAh g–1 at 15 C).
研究领域:
材料科学
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储能技术
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电化学
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电池材料
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固态化学
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产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2025
·
IF 4.1
Yitao Hui,Xianhe Meng,Aobo Yue,Qi Shen,Bingyu Liu,Nengjun Yu,Qiaoling Kang,Lijing Yan,Chubin Wan,Tingli Ma
Na superionic conductors (NASICONs) have attracted much attention due to their unique framework structure and high capacity. However, the poor intrinsic electron conductivity severely limits further development. This work develops a soft-hard carbon composite modified Na3V2(PO4)3 (NVP) cathode with excellent rate performance and long-term cycling stability. The optimized sample exhibits excellent electrochemical performance and can release a specific discharge capacity of 102.7 mAh g-1 at 1 C rate. At the same time, after 5000 cycles at 20 C rate, the discharge capacity can reach 82.3 mAh g-1, and the capacity retention rate is 100.1 %. The morphological characteristics of the NVP/C samples were investigated, Meanwhile, combined with Raman spectroscopy and electrochemical analysis, these results revealed that the synergistic interaction between soft and hard carbon components significantly enhances electronic conductivity and facilitates rapid ionic transport. This work provides a unique idea for the surface modification and synthesis of NASICON cathode materials for sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机固体化学
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纳米材料
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Tinghu Liu,Lin Shen,Yunming Li,Kemin Jiang,Libo Song,Yuming Jin,Jing Yang,Xing Xin,Xiayin Yao
NASICON oxide solid electrolytes are considered promising candidates for all-solid-state sodium batteries due to their extremely high ionic conductivity and favorable electrochemical stability. However, the practical application of NASICON electrolytes is greatly impeded by poor electrolyte–electrode interfacial contact and continuous sodium dendrite propagation. Herein, a NaF-rich multifunctional interface layer on the surface of a Na anode (Na@NaF-rich), containing NaF, amorphous carbon, and an unreacted C–F bond species, is developed in situ by the reaction between Na and commercial poly(tetrafluoroethylene). This NaF-rich interface layer is proven to reduce the diffusion barriers at the Na/NASICON electrolyte interface and homogenize Na deposition as well as suppress Na dendrite growth, thus achieving a high critical current density of 4 mA cm–2. The resultant Na3V2(PO4)3@C/Na@NaF-rich all-solid-state cell showed a high initial specific capacity of 117.6 mAh g–1 at 0.1 C with a Coulombic efficiency of 94.8%. Even at 0.5 and 1 C, it still exhibited high capacity retentions of 83.3% and 80.4%, respectively, after 750 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Jiahao Wang,Qiliang Gao,Chao Li,Xiujuan Gao,Jian Gong,Faen Song,Junfeng Zhang,Yizhuo Han,Qingde Zhang
Direct synthesis of acrylic acid (AA) from methanol and acetic acid is promising for the high-value utilization of coal-based chemicals. However, this direct synthesis faces challenges due to limited catalyst functionality or insufficient synergistic effects among multiple active sites. Herein, we constructed a series of bifunctional catalysts (CuO-NSCs) by incorporating Cu into NASICON material for direct synthesis of AA. A total selectivity of 96.0% to AA, methyl acrylate (MA), and methyl acetate was achieved over a 2.5 wt% CuO-NSC catalyst, with the 56.3% selectivity of AA+MA, approximately 23% higher than the one ever reported (33%). Our research revealed that NASICON substrate promoted the formation of more Cu + species, which are crucial redox active sites for methanol dehydrogenation into formaldehyde; furthermore, the appropriate introduction of Cu somewhat regulated surficial acid-base properties, specifically increasing the density of medium-strength acidic and basic sites that are essential for the aldolization of acetic acid and formaldehyde. Apparently, the superior activity of the catalyst was attributed to good synergistic effects between the redox sites and acid-base sites.
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DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Wenxuan Wang,Shan Hu,Zelang Jian,Wen Chen
NASICON-based solid-state batteries have attracted much attention due to their high safety and high energy density. However, the unstable interface contact usually leads to sodium dendrite formation and cell failure during cycling. Deep insights into the evolution of the NASICON/Na interface are conducive to designing a morphologically stable interface. Herein, for the first time, we develop an asymmetric stripping/plating method to investigate the evolution process of the NASICON/Na interface via a facile two-electrode cell. It is revealed that the “initial voltage drop” phenomenon is closely related to the rapid lateral growth of the Na film on the NASICON electrolyte, which will result in void accumulation, interface contact loss, dendrite growth, and ultimate cell failure. Inspired by this failure mechanism, we developed a semiliquid wetting agent (sodium biphenyl/C composite, NBPC) to construct a continuous Na+ transport pathway at the NASICON/Na interface. The symmetric cell modified with NBPC shows excellent cycling stability at 0.2 mA cm–2. The solid-state battery paired with Na3V2(PO4)2 shows a high discharge capacity of 104 mAh g–1 and a high capacity retention of 96.3% after 100 cycles at 1C.
研究领域:
材料科学
·
储能技术
·
电化学
·
固体离子学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Jing Zeng,Dongzheng Wu,Xin Wang,Junnan Wu,Jiyang Li,Jing Wang,Jinbao Zhao
The high-voltage cathode material based on the sodium super ionic conductor (NASICON) structured Na 3 V 2 (PO 4 ) 3 (NVP) has been found to be a potential candidate for Mg storage. In this work, to improve its electrochemical performance, we construct honeycomb-like structured NVP/C/G with faster electronic and ionic transport by a convenient and universal spray-drying method for the first time. After electrochemically desodiating two Na from the NVP/C/G (ED-NVP/C/G), the ED-NVP/C/G is tested in highly anhydrous Mg electrolyte, and the insights into its Mg storage property and mechanism are carefully studied. An initial capacity of 87 mAh g −1 with a relatively high average discharge voltage of 2.47 V vs. Mg 2+ /Mg is obtained at 0.1 C. The X-ray diffraction (XRD) results show that the inserted Mg 2+ ions tend to occupy the Na2 (at 18e sites) vacant sites. The investigation of kinetic process by galvanostatic intermittent titration technique (GITT) reveals that the Mg diffusion kinetics is faster during the demagnesiation process. The electrochemical reaction bases on two-phase transition mechanism, and the R ct value shows a positive relationship to the formation of NaV 2 (PO 4 ) 3 phase. Finally, a Mg full cell prototype based on the ED-NVP/C/G cathode with Mg metal anode is built. The rational structure design of NVP/C/G improves the electrochemical performance for Mg storage, and our work also gives new understanding into the Mg storage mechanism in the ED-NVP/C/G structure.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
固态离子学
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DOI
高影响因子
危险品化学品经营许可证（带存储）