CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Shao-Peng Shen,Geng Tang,Hong-Ji Li,Liang Zhang,Jin-Chi Zheng,Yuan Luo,Jun-Pei Yue,Yongzheng Shi,Zhe Chen
NASICON-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has attracted much attention as a fast lithium-ion conductor for all-solid-state lithium-based batteries. However, the large grain-boundary resistance and high sintering temperature above 950 °C for pure LATP electrolytes hinder their practical application in lithium-based batteries. Here, a low-temperature preparation approach for the superionic conductor LATP electrolyte with sintering aids is proposed. By introducing sintering aids Li 3 PO 4 , LiBO 2 ·0.3H 2 O, and binary 0.32Li 3 PO 4 -0.68LiBO 2 ·0.3H 2 O, LATP-based pellets can be fabricated at optimized sintering temperatures below 900 °C. The resultant LATP-based pellets maintain a high relative density and homogeneous microstructure, which arises from the sintering aid to facilitate the grain rearrangement and fill the interstices between grains. The LATP pellets using sintering aid Li 3 PO 4 achieve a high ionic conductivity of 5.2 × 10 −4 S cm −1 at a low temperature of 800 °C, 7.3 times that (7.1 × 10 −5 S cm −1 ) of pure LATP pellets sintered at 950 °C, which demonstrates the effectiveness of low-temperature preparation approach to reducing the preparation cost and optimizing the ionic conductivity of LATP-based electrolytes.
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Zhisong Geng,Yingqi Sun,Qing Zhang,Shao-Peng Shen,Liang Zhang,Jin-Chi Zheng,Yuan Luo,Yongzheng Shi,Zhe Chen
In response to the critical challenges of interfacial impedance and volumetric changes in Li (1+x) Al x Ti (2‑x) (PO 4 ) 3 (LATP)-based lithium metal batteries, an elastomeric lithium-conducting interlayer fabricates from fluorinated hydrogenated nitrile butadiene rubber (F-HNBR) matrix is introduced herein. Owing to the vulcanization, vapor-phase fluorination, and plasticization processes, the lithium-conducting interlayer exhibits a high elasticity of 423%, exceptional fatigue resistance (10 000 compression cycles), superior ionic conductivity of 6.3 × 10 −4 S cm −1 , and favorable lithiophilicity, rendering it an ideal buffer layer. By integrating the F-HNBR interlayer, the LATP-based lithium symmetric cells demonstrate an extended cycle life of up to 1600 h at 0.1 mA cm −2 and can also endure deep charge/discharge cycles (0.5 mAh cm −2 ) for the same duration. Furthermore, the corresponding lithium metal full cells achieve 500 cycles at 0.5 C with 98.3% capacity retention and enable a high-mass-loading cathode of 11.1 mg cm −2 to operate at room temperature.
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
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 10
·100528
·
IF 3.721
Senhao Wang,Shuai Li,Bin Wei,Xia Lu
Solid-state rechargeable lithium batteries are considered as one of the promising energy storage technologies due to their safety and high energy density. While developing better solid-state batteries is hampered by the poor interfacial compatibility. In this work, one novel design of buffer layer using the Li1+xAlxTi2−x(PO4)3 (LATP) solid electrolyte is reported to address the poor compatibility and big migration gap at the electrode-solid electrolyte interface. Such a facile design works well on facilitating the interfacial ionic inter-diffusion by padding the gap of ionic conductivity between electrode and electrolyte, as well as passivating the electric activity of interface region to avoid the continuously interfacial degradation, hence makes the interface more homogeneous and intimate to deliver the superior electrochemical performance. Moreover, upon cycling, a new carbon-rich interphase is revealed from electron microscopy in the interface region, which probably plays an important role in stabilizing the structure and regulating the electron/ion fluxes. All these findings provide a rewarding avenue to resolve the interfacial issues of solid-state lithium ion batteries and the integrated electronic devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Wen-Qing Wang,Cong Xia,Chen-Ting Zhu,Yue-Yang Wu,Jian-Hua Cao,Yue Li,Da-Yong Wu
Li1+xAlxTi2–x(PO4)3 (LATP) is a NASICON-type solid electrolyte that presents stability in aqueous media and high ion conductivity. With these advantages, it is expected to be used as a cathode and separator coating material for lithium-ion batteries to improve battery performance. However, it also displays a high level of residual moisture introduction due to its strong water absorption. Meanwhile, LATP particle size is a key influential factor for the residual moisture level and thereby produces an impact on the battery performance. In this research, we prepared three different particle sizes of LATP (100, 500, and 1000 nm) to investigate their effects as separator coatings on residual moisture and NCM811 battery performance. The results indicate that the water absorption of LATP is much higher than that of Al2O3 with the same particle size; the use of nanoscale LATP keeps the residual moisture of the LATP/PE separator rather high. When the particle size is in the range of 100–1000 nm, the battery’s cycling performance gradually deteriorates with the decrease of the particle size, among which the degradation of rate performance is more noticeable. More importantly, the research finds that LATP particles coated with polydopamine (PDA) can effectively reduce the coating’s residual moisture. After being coated with PDA, LATP particles with a particle size of 1000 nm result in the residual moisture content within the composite separator decreasing from 2136 to 408 ppm, thereby contributing to the optimal performance of NCM811||Li and NMC811||C batteries.
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
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Kaixiang Shen,Qinyu He,Qiang Ru,Danling Tang,Than Zaw Oo,Mono Zaw,Nyein Wint Lwin,Su Htike Aung,Swee Ching Tan,Fuming Chen
The lithium resources in seawater are more abundant than that on land, which is expected to meet the growing demand for the energy storage device like the lithium batteries . The electrochemical method is regarded as the most potential application. However, this method relies on membranes with advanced lithium-ion selectivity, and the emergence of super ionic conductor is expected to solve this problem. Herein, we employed polymer poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) as the flexible framework and Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) as the lithium ion conductor to prepare a flexible LATP/PVDF-HFP composite membrane (FLCM). Optimized FLCM has high lithium-ion selectivity and can be enriched up to 5.525 ppm Li + in diluted seawater (lithium extraction rate: 4.777 × 10 −3 mol/(m 2 h)), which is 48.465 times that of commercial cation-exchange membrane (CEM). In addition, the FLCM exhibits excellent equilibrium selectivity for Li + over Ca 2+ and Mg 2+ . The selectivity of Li + /Ca 2+ and Li + /Mg 2+ is up to 8424.706, 853.395, respectively. In an electrocatalytic-driven Li-ion extraction device with four recycle chambers at 2 V voltage, the concentration of Mg 2+ and Ca 2+ in the catholyte can be reduced to 0.744% and 1.249% of the seawater concentration, respectively. The work will be significant to solve the challenges of lithium extraction from seawater.
研究领域:
材料科学
·
电化学
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环境工程
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2024
·
IF 3
Furui Ma,Yuxiang Liu,Xuanru Du,Qingqing Lu
The development of excellent performance solid-state electrolytes (SSEs) is essential for high-energy solid-state lithium batteries . Herein, solid state composite electrolyte consisting of NASICON particles and PEO-LiTFSI was prepared through a solvent-free procedure. The assembled LFP / PEO-LATP / Li all-solid-state battery can present an initial capacity of 153.8 mA h g −1 and exhibit excellent electrochemical stability with a high capacity retention ratio of 95% after 100 cycles at 60 °C. In addition, a small amount of ionic liquid (IL) was added into hybrid solid electrolyte (HSE) to enhance the interface contact and improved the room temperature performance. Surprisingly, the assembled LFP / HSE / Li battery exhibits a stable discharge capacity of 157.6 mA h g −1 at 25 °C when the content of IL is 3%. The capacity retention can be reached 97.8% over 150 cycles at 60 °C. All the results show that assembled cells with HSE revealed an improved electrochemical performance .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Bingqin Li,Liangxing Jiang,Nan Xiao,Siliang Liu,Yang Lu,Huan Zhang,Zongliang Zhang,Fangyang Liu
The existing lithium extraction technologies from salt lakes are confronted with a number of challenges, including limited applicability to brines with elevated Mg/Li ratios and low overall lithium recovery rates. Therefore, it is crucial to develop direct lithium extraction technologies tailored to pristine brines. The core challenge in lithium extraction lies in the effective separation of magnesium and lithium. However, conventional methods struggle to efficiently separate Mg 2+ and Li + in a single-stage process. Lithium superionic conductors, such as Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), are capable of exploiting their internal lithium ion vacancies to enhance the kinetic transport disparity between Mg 2+ and Li + , thus enabling efficient separation. By employing a high-temperature diffusion technique to introduce Ag + into the interstitial sites of the LATP lattice, the local positive charge density around Ag + is increased. This raises the migration barrier for Mg 2+ within the LATP, significantly improving the Li–Mg separation performance, with a notable long-term separation coefficient exceeding 25 000. Using 2% Ag-doped LATP, battery-grade Li 2 CO 3 with a purity of 99.7% can be produced directly from pristine salt lake brine with a Mg/Li ratio of 500 through a single-stage separation process.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 12
·2082
·
IF 5.719
Aihong Xu,Ruoming Wang,Mengqin Yao,Jianxin Cao,Mengjun Li,Chunliang Yang,Fei Liu,Jun Ma
An Li1.3Al0.3SnxTi1.7−x(PO4)3(LATP-xSn) ceramic solid electrolyte was prepared by Sn doping via a solid phase method. The results showed that adding an Sn dopant with a larger ionic radius in a concentration of x = 0.35 enabled one to equivalently substitute Ti sites in the LATP crystal structure to the maximum extent. The uniform Sn doping could produce a stable LATP structure with small grain size and improved relative density. The lattice distortion induced by Sn doping also modified the transport channels of Li ions, which promoted the increase of ionic conductivity from 5.05 × 10−5to 4.71 × 10−4S/cm at room temperature. The SPE/LATP-0.35Sn/SPE composite solid electrolyte with a sandwich structure was prepared by coating, which had a high ionic conductivity of 5.9 × 10−5S/cm at room temperature, a wide electrochemical window of 4.66 V vs. Li/Li+, and a good lithium-ion migration number of 0.38. The Li||Li symmetric battery test results revealed that the composite solid electrolyte could stably perform for 500 h at 60 °C under the current density of 0.2 mA/cm2, indicating its good interface stability with metallic lithium. Moreover, the analysis of the all-solid-state LiFePO4||SPE/LATP-0.35Sn/SPE||Li battery showed that the composite solid electrolyte had good cycling stability and rate performance. Under the conditions of 60 °C and 0.2 C, stable accumulation up to 200 cycles was achieved at a capacity retention ratio of 90.5% and a coulombic efficiency of about 100% after cycling test.Keywords:NASICON-type LATP;Sn doping;sandwich structure;composite solid electrolyte;lattice distortion
研究领域:
材料科学
·
电化学
·
固体化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yuchen Qi,Yan Zhao,Qinghe Zhao,Luyi Yang,Fen Qiao,Junfeng Wang,Yongli Song
As a solid-state electrolyte suitable for all-solid-state Li metal batteries, Al-doped LiTi 2 (PO 4 ) 3 (LATP) exhibits high ionic conductivity, air stability, and low cost; however, it is subject to significant interface reactions with the Li anode. Herein, we demonstrate that the interface reaction of LATP with Li anode can be categorized into two distinct processes: a chemical reaction and an electrochemical reaction. Although the products of both reactions are Li 3 PO 4 , AlPO 4 , and Li 3 Ti 2 (PO 4 ) 3 , the chemical reaction occurs spontaneously between LATP and Li anode at the interface. The electrochemical reaction involves lithium ions and electron carriers being injected into LATP under applied voltage conditions, which then reacts with LATP within LATP. Such electrochemical reactions can lead to the fragmentation of LATP, resulting in a significant decrease in its ion transport capacity, which is primarily responsible for the failure of LATP-based lithium metal batteries. Notably, we found that LATP, traditionally regarded as an electronic insulator, demonstrates a certain electron transport capability under a specific voltage, which is a prerequisite for the occurrence of electrochemical reactions. Furthermore, we discovered that this electrochemical reaction can inhibit the growth of lithium dendrites in LATP
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2018
·
IF 2.751
Xiaojuan Shi,Nengyan Ma,Yixue Wu,Youhua Lu,Qizhen Xiao,Zhaohui Li,Gangtie Lei
NASICON-type ceramic electrolyte has been considered as one of the potential candidates for solid state electrolytes with excellent conductivity at room temperature and good stability under atmosphere. In this paper, NASICON-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) was prepared by a solution method and dispersed in poly(vinylidene fluoride) (PVDF) to form LATP/PVDF composite electrolyte membranes (CEM) by the method of casting. The effects of LATP filler on the structure, morphology, ionic conductivity , stability of the LATP/PVDF CEM were studied. It was found that the LATP/PVDF CEM had high lithium ion conductivity and excellent electrochemical stability with the electrochemical stability window up to 5.67 V versus Li + /Li. The discharge capacity of lithium iron phosphate cells assembled with LATP/PVDF CEM was 163.5 mAh g −1 and retained over 95.7% of its initial capacity after 50 cycles. The results show that the addition of LATP filler to PVDF matrix increases the amorphous phase of the polymer by acting as a gel center and the concentration of Li + is increased, which is beneficial to the synergism in the migration of Li + and enhances the ionic conductivity .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
IONICS
·
2023
·Vol. 29
·期 7
·2665-2678
·
IF 2.8
Zou Kun,Cai Zehua,Ke Xiang,Wang Keliang,Tan Xiaoqing,Luo Dandan,Huang Fang,Wang Chengyan,Cheng Jinke,Xiao Rengui
To improve the sinterability, a new LATP-x wt% LiBiO 3 composite solid electrolyte was fabricated by adding LiBiO 3 to a NASICON-type Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 (LATP) solid electrolyte synthesized by the sol–gel method. The results showed that the liquid phase formed by the LiBiO 3 additive promoted grain growth during the sintering process, which led to structural stability and an increased relative density of LATP. When the LiBiO 3 addition amount was 2 wt%, the relative density was 94%, and the bulk ionic conductivity was 2.91 × 10 −4 S cm −1 . In addition, to improve the interfacial instability between the solid electrolyte and lithium metal, we prepared a PPS/LATP-LiBiO 3 /PPS composite solid electrolyte with a sandwich structure using a polymer PVDF-HFP-PEO-SN (PPS) cladding method to construct an LFP/SSCEs/Li all-solid-state battery. The electrical property test results showed that the all-solid-state battery still had 92% discharging capacity and nearly 100% coulombic efficiency after 50 cycles at 25 °C and 0.1 C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Batteries & Supercaps
·
2024
·
IF 5.1
Jian-Hua Cao,Peng Zhang,Ya-kun Wang,Da-Yong Wu
Graphical 2,2,2-trifluoroethyl phosphite (DETFPi), 1,3-Dioxolane (DOL) and trimethylolpropane tri(methacrylate) (TTE) were polymerized under LiBF 4 initiator on the LATP/PE/LATP separator and thereby obtained DETFPi-PDOL/LATP composite electrolyte after 24 h at room temperature. LATP coating on the surface of the PE separator can improve the cycling stability, rate performance, and interface state of NCM811 batteries. 1,3-Dioxolane (DOL) can undergo in-situ polymerization in batteries to form solid-state organic electrolyte PDOL. When applied to NCM811||Li battery system, PDOL electrolyte helps optimize the contact and interface stability between electrolyte and electrodes. This study explores the effects of PDOL with PE separators coated with Li1 .3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) on the performance of NCM811||Li batteries. 2,2,2-trifluoroethyl phosphite (DETFPi), was mixed with DOL at a 1 : 35 mass ratio. Then, LiBF 4 was used to initiate in-situ polymerization and thereby obtained DETFPi-PDOL electrolyte after 24 h at room temperature. The composite electrolyte exhibits enhanced ion conductivity (1.59×10 −4 S cm −1 ), high lithium ion transference number (0.78), wide electrochemical stability window (4.53 V), and high critical current density (2.2 mA cm −2 ). Li||PDOL@LATP||Li battery shows extremely low overpotential (35 mV) after a constant current stable cycle of 500 h at 1.0 mA cm −2 . After 500 cycles at 1 C, the remaining capacity is 153.9 mAh g −1 with a capacity retention of 82.1 % in NCM811||PDOL@LATP||Li batteries. This indicates that the LATP coating on the surface of the PE separator plays an important role in optimizing the performance of DETFPI-PDOL electrolyte batteries. LATP and DETFPI-PDOL are effective in improving the cycling stability, rate performance, and interface state of NCM811 batteries.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 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）