SOLID STATE IONICS
·
2024
·
IF 3
Ke Huang,Mingyang Duan,Xiaojuan Lu,Feng Zhang
As a new type of clean and efficient energy storage device, lithium-ion batteries have been widely used in electronic products, electric vehicles, and other fields, and the accompanying safety issues are of increasing concern. Therefore, solid-state lithium-ion conductors have become a current research hotspot. This paper used graphene oxide material to design and prepare Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 solid electrolytes by the co-precipitation method and performed some relevant characterizations. The results showed that the addition of graphene oxide optimized the electrolyte structure improved the density of the powder, promoted grain growth, improved the transport path of lithium ions, and thus increased the total ionic conductivity . The optimal doping ratio was 0.5 wt%, and the total ionic conductivity reached the maximum of 2.42 × 10 −4 S/cm. Compared to pure Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 , the ionic conductivity increased by 154% after using the graphene oxide . It is believed that larger grains, fewer grain boundaries, and denser microstructure resulted in a less distorted migration pathway for lithium ions. Under the influence of graphene oxide , Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 exhibited better air stability than pure Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 electrolyte. The electrolyte prepared in this study showed great application potential in all-solid-state batteries.
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
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Yuansong Luo,Han Gao,Xiujian Zhao
The NASICON-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) is considered to be one of the most promising solid electrolytes because of its excellent chemical stability against moisture and considerable total ionic conductivity . Nevertheless, the poor sinterability and low grain boundary ionic conductivity of LATP limit its practical commercial applications. Herein, Li 2 CO 3 ·Bi 2 O 3 (abbreviated as LB), as a sintering aid, was introduced into LATP to improve its sinterability and ionic conductivity. It was demonstrated that the addition of LB promoted the liquid phase sintering of LATP by forming the secondary phases with a low melting point, thereby promoting the growth of grains and making the contact between the grains closer. With the help of LB, the sintering temperature of LATP was reduced to about 900 °C. A series of comparative investigations indicated that the LATP-2LB ceramic pellets sintered at 900 °C exhibited the highest total ionic conductivity of 0.673 mS/cm. Meanwhile, the relative density and grain boundary ionic conductivity of LATP-2LB ceramic pellets sintered at 900 °C reached 95.28% and 3.835 mS/cm, respectively, which is much higher than 77.16% and 0.264 mS/cm of LATP-0LB ceramic pellets sintered at the same temperature. Obviously, LB can effectively improve the sinterability of LATP while increasing its ionic conductivity, providing a new strategy for preparing LATP ceramics with excellent properties.
研究领域:
材料科学
·
电化学
·
固体化学
✓ 已验证
DOI
高影响因子
Materials Chemistry Frontiers
·
2021
·Vol. 5
·期 14
·5336-5343
·
IF 6.482
Shuyuan Li,Zhongyuan Huang,Yinguo Xiao,Chunwen Sun
Solid-state electrolytes (SSEs) are expected to replace liquid electrolytes in lithium metal batteries (LMBs) with good safety and mechanical strength. However, the existing problems of the Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte, like its poor contact with electrodes, serious side reactions and low ionic conductivity, limit its practical application. In this work, a chlorine (Cl)-doped LATP electrolyte showing a high ionic conductivity of 0.423 mS cm−1 was successfully synthesized. Neutron powder diffraction (NPD) results reveal that the change of the Li+ coordination environment after Cl doping has an effect on the ion diffusion path in the bulk LATP. The fabricated Li symmetric battery with the Cl-doped LATP exhibits long-term compatibility and electrochemical stability against the lithium metal anode. The enhanced performance may be attributed to the in situ formed stable solid electrolyte interphase (SEI) layer. Meanwhile, compared to the LATP electrolyte, the Li|LiFePO4 (LFP) full battery with Cl-doped LATP as an electrolyte has an improved rate performance and cycling performance. This work demonstrates that Cl doping may be an effective approach for improving the performance of the LATP electrolyte.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiangchao Zhao,Yuansong Luo,Xiujian Zhao
NASICON-type solid electrolyte Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has become an excellent substitute for organic liquid electrolytes due to its high ionic conductivity and exceptional air stability. However, its application is limited by its poor sintering characteristics and high grain boundary resistance. In this study, TeO 2 was introduced into LATP as a sintering aid to promote its sintering, and its properties were measured by XRD , SEM, XPS, EIS and dilatometry . The results show that the addition of TeO 2 can form eutectic liquid phase in LATP ceramic pellets during sintering, thus effectively promoting particle sintering. Not only the grain size was greatly increased, but also grain boundary and pore defects were reduced. With the help of TeO 2 , the performance of LATP is greatly improved when sintered at only 750 °C, the relative density and total ionic conductivity reached 90.64% and 0.207 mS/cm, respectively. The highest total ionic conductivity of 0.279 mS/cm and the highest relative density of 93.81% were obtained when sintered at 800 ℃ and 950 ℃, respectively. However, due to the volatilization of Li and Te at high temperature, the relative density and total ionic conductivity of LATP with TeO 2 added sintered at high temperature have only a small increase compared to that without addition. In conclusion, this study provides a feasible scheme for improving LATP performance.
研究领域:
材料科学
·
电化学
·
固体物理
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Yingmin Jin,Xin Zong,Xuebai Zhang,Chaojun Liu,Dong Li,Zhenggang Jia,Gen Li,Xuanguang Zhou,Junhua Wei,Yueping Xiong
Composite solid electrolyte (CSE) consisting of Li + conductive fillers and polymer matrix has become attractive for high energy-density lithium batteries . Current researches focus on the “ceramic in polymer”-type CSE due to the severe agglomeration of ceramic particles. Consequently, the destroyed percolation network impedes the further improvement in ionic conductivity . In this work, we report a novel structural design of ceramic-enriched CSE consisting of three-dimensional (3D) interconnected Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), polyvinylidene fluoride (PVDF) and LiN(SO 2 ) 2 (CF 3 ) 2 (LiTFSI). The 3D LATP network is constructed through the surface functionalization of LATP particles by polymethyl methacrylate (PMMA). Owing to the intermolecular interaction between PMMA and PVDF, the incorporation of PMMA-coated LATP (denoted as LATP@PMMA) enables the uniform distribution of ceramic phase and generates interconnected LATP network. Noticeably, such an electrolyte maximizes the utilization of inorganic fillers through the facile treatment of zero-dimensional materials, which is comparable to those 3D template-derived fillers. Furthermore, continuous Li + conduction pathways through LATP framework and LATP/PVDF interphase are guaranteed by the enhanced affinity of LATP towards PVDF matrix and the intrinsic Li + complexation capability of PMMA. Remarkable cycling performances of the LiNi 0.5 Co 0.2 Mn 0.3 O 2 /LATP@PMMA-PVDF/Li batteries confirm the feasibility of 3D ceramic-enriched composite electrolyte in the application of solid-state lithium batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xiaoyi Li,Yongjian Zhou,Jiawen Tang,Siliang Zhao,Jingyong Zhang,Xiao Huang,Bingbing Tian
NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) has attracted a lot of attention because of its high ionic conductivity and stability to air and moisture. However, the size effect of LATP primary particles on ionic conductivity is ignored. In this study, different sizes of LATP particles are prepared to investigate the morphology, relative density, and ionic conductivity of the LATP solid electrolyte. The influences of particle size and sintering temperature on the microstructure, phase composition, and electrical properties of LATP ceramics were systematically studied. The medium-sized LATP particle (2 μm) presents a great microstructure with a high relative density of over 97%, the highest ionic conductivity of 6.7 × 10–4 S cm–1, and an activation energy of 0.418 eV. The Li–Li symmetric cells and Li–LFP batteries delivering good electrochemical performance were fabricated with highly conductive LATP ceramics. These results make significant strides in elucidating the relationship between the particle sizes of LATP and its electrochemical performance.
研究领域:
材料科学
·
固体离子学
·
储能
·
陶瓷材料
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Erqing Zhao,Yudi Guo,Guangri Xu,Long Yuan,Jingcheng Liu,Xiaobo Li,Li Yang,Jingjing Ma,Yuanchao Li,Shumin Fan
Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 is regarded as one of the most promising solid electrolytes for all solid state lithium ion batteries (ASSLIBS). However, its grain boundary conductivity is still low, which reduces the total conductivity of electrolyte. In this work, in order to further improve the electrical conductivity of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 , a series of Y doped Li 1.3 Al 0.3-x Y x Ti 1.7 (PO 4 ) 3 (x = 0, 0.025, 0.05, 0.075 and 0.15) solid electrolytes were synthesized using a modified solid state method. Effects of Y doping content on morphology, phase and electrical conductivity of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 electrolyte materials were systematically investigated. All synthetic electrolyte powders show Nasicon-like structure, well-shaped polyhedral morphology as well as good crystallinity. Y dopant content has a great influence on electrochemical properties of electrolytes. The high total conductivity of 7.8 × 10 −4 S/cm at room temperature and a low activation energy of 0.17 eV is obtained for the electrolyte with the Y doping content of 0.075 due to the increasing of grain boundary conductivity, and its electrical conductivity is about 2 times larger than that of the undoped electrolyte. The excellent electrochemical performance is mainly attributed to high electrolyte density which results from the good sintering property of electrolyte materials as well as the existence of YPO 4 phase at grain boundaries. Additionally, this electrolyte has a negligible electronic conductivity. These results suggest that Y doped Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 can be used as an alternative solid electrolyte for all solid state lithium ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Changwei Luo,Guoqiang Zhao,Mengyang Zhang,Bin Wu,Qingsong Hua
NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) is a widely used solid electrolyte in solid-state lithium batteries, owing to its excellent chemical stability against moisture and high total ionic conductivity. However, traditionally, densification of LATP has been achieved through a high-temperature sintering process (approximately 1000 °C) owing to its poor sinterability. Herein, we report a facile synthesis route to obtain highly sinterable LATP solid electrolyte using tetrabutyl titanate (C16H36O4Ti) as the titanium source and incorporating the traditional solid-state reaction method. The synthetic LATP powder mixed with a low ratio of LiTiPO5 exhibited a hybrid crystalline–amorphous phase structure, which facilitated grain fusion, promoted structural homogeneity, and facilitated structural densification under low-temperature sintering. The sintered LATP pellet, which exhibited an interconnected structure and indistinct grain boundaries, achieved a relative density of >90% and an ionic conductivity of 0.667 mS/cm at a sintering temperature of only 750 °C. Additionally, we systematically studied and demonstrated the synthesis reaction mechanism, sintering behavior, and ionic diffusion kinetics of LATP electrolytes. Our study paves the way for synthesizing highly sinterable LATP solid electrolytes using a simple, additive-free, and cost-effective method.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Tong Zhou,Nan Zhang,Qi Li,Guoyao Li,Haidong Sun,Chenglan Zhang,Juan Li,Hezhou Liu,Huanan Duan
The rapid increase in the commercialization of electric vehicles and portable electronics has markedly raised the demand for lithium resources. Extracting lithium from brine has become a critical pathway to address future lithium production challenges. However, the lithium extraction efficiency of conventional technologies is limited by the low levels of Li + and the high Mg 2+ /Li + ratio present in brine. A method involving one-step electrolysis with a solid-state electrolyte has been introduced for the direct and efficient extraction of metallic lithium. Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) is considered a highly promising selective membrane for large-scale lithium extraction from brine sources due to its low cost, excellent stability, and high ionic conductivity. Herein, LATP electrolytes were synthesized through the optimization of solid-state reaction conditions. The resulting LATP pellets exhibited a high relative density of 98.29 % and an impressive ionic conductivity of 3.88 × 10 −4 S cm −1 . The lithium extraction device utilizing LATP as a selective membrane achieved a remarkable current efficiency of 97.4 % and a high lithium production rate of 40.4 μg h −1 cm −2 . After lithium extraction process, the LATP pellets retained the ionic conductivity of 2.69 × 10 −4 S cm −1 and preserved the sodium super ion conductors (NASICON) crystal structure. This study presents an efficient Li + selective membrane for extracting lithium directly from natural brine.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Bingqin Li,Liangxing Jiang,Nan Xiao,Siliang Liu,Zongliang Zhang,Fangyang Liu,Michael L. Free
Traditional technologies of lithium extraction from salt lakes suffer the low efficiency of Li + /Mg 2+ separation and high energy consumption. We introduce a novel electrodialysis process that leverages Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP, one of lithium superionic conductors) and incorporates an aided charge balance (ACB) system, all under low voltage and ultra-low current conditions. The remarkable ion selectivity of LATP, coupled with the enhanced recovery ratio facilitated by ACB, collectively empower this technology to achieve extremely high separation efficiency and remarkably low energy consumption. In a simulated pristine brine, the average Li/Mg separation coefficient reached 5924, accompanied by an exceptionally low energy consumption of only 0.80 kWh·kg −1 Li . Furthermore, this technique enabled the production of battery-grade Li 2 CO 3 with an outstanding purity of 99.93 %, achieved through a streamlined process comprising only two stages.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Crystals
·
2024
·Vol. 15
·期 1
·31
·
IF 2.4
Zhongran Yao,Fen Qi,Qiang Sun,Lin Ye,Xiaowei Yang,Guojie Chao,Pei Tang,Kongjun Zhu
Lithium-conducting NASICON materials have emerged as a promising alternative to organic liquid electrolytes for high-energy-density Li-metal batteries, owing to their superior ionic conductivity and excellent air stability. However, their practical application is hindered by poor sintering characteristics and high grain boundary resistance. In this investigation, Li1.3Al0.3−xYxTi1.7(PO4)3(LAYTP-x,x= 0.00, 0.01, 0.03, 0.05, and 0.07) were successfully synthesized via conventional solid-state reaction to explore the impact of Y3+on both ionic conductivity and chemical stability. The structural, morphological, and transport properties of the samples were comprehensively characterized in order to identify the optimal doping concentration. All samples exhibited a NASICON structure with a uniform distribution of Y elements within the electrolyte. Due to its highest relative density (95.8%), the LAYTP-0.03 electrolyte demonstrated the highest total conductivity of 2.03 × 10−4S cm−1with a relatively low activation energy of 0.33 eV, making it suitable for solid-state batteries. When paired with the NCM811 cathode, the Li/LAYTP-0.03/NCM811 cell exhibited outstanding electrochemical performance: a high capacity of 155 mAh/g was achieved at 0.2C after 50 cycles with a Coulombic efficiency of approximately 100%, indicating highly reversible lithium plating/stripping facilitated by the LAYTP-0.03 electrolyte. These results suggest that the LAYTP-0.03 ceramic electrolyte could be a promising alternative for developing safe solid-state Li-metal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·Vol. 31
·期 12
·e202403915
·
IF 3.7
Qi Pan,Wanliang Yang,Chen Wu,Dongjia Xie,Yuan Wang
Graphical A ploy(1,3-dioxolane) (PDOL) layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. The as-prepared PDOL as an “interfacial adhesive” can fill the gap between the LATP and the electrode, providing a better interfacial contact and reduced interfacial impedance. Such interfacial adhesive layer not only effectively prevents Li metal from reducing LATP but also provides intimate interface contact and limits unnecessary electron transport. Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) as the solid-electrolyte has attracted much attention for Li-ion batteries. However, the unstable LATP/Li interface and the insufficient contact between the anode/cathode and LATP usually lead to the structural collapse of LATP and the large solid–solid interfacial resistance for Li+ transport. Herein, a poly(1,3-dioxolane) (PDOL) adhesive layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. Such PDOL interfacial adhesive layer alleviates adverse reduction reactions at the LATP/Li interface and provides stable and well-contacted bilateral electrode interfaces. Benefitting from the PDOL interfacial adhesive, the Li|adhesive-LATP|Li symmetric cells achieve a current density up to 0.7 mA cm −2 and exhibit a good cycling stability for more than 2750 h at 0.1 mA cm −2 , and the Li|adhesive-LATP|LiFePO4 solid-state batteries with interface modification exhibit a capacity of 158 mAh g −1 at 0.2 C with a retention of 94 % after 100 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）