Preparation and evaluation of high lithium ion conductivity Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 solid electrolyte obtained using a new solution method

Ma, Feifei; Zhao, Erqing; Zhu, Shaoyin; Yan, Wenchao; Sun, Dongping; Jin, Yongcheng; Chen, Nan

doi:10.1016/j.ssi.2016.07.010

Cited by 114 publications

(55 citation statements)

References 30 publications

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“…Therefore, LATP is obtained as a pellet with very high purity. In the literature, AlPO 4 is very commonly observed, even as traces, in the XRD patterns [24,26,27]. Its action as a resistive layer is well-known and deleterious to ionic conductivity [28].…”

Section: Resultsmentioning

confidence: 99%

Microwave-assisted reactive sintering and lithium ion conductivity of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte

Hallopeau

Brégiroux

Rousse

et al. 2018

Journal of Power Sources

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Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) materials are made of a threedimensional framework of TiO 6 octahedra and PO 4 tetrahedra, which provides several positions for Li + ions. The resulting high ionic conductivity is promising to yield electrolytes for all-solid-state Li-ion batteries. In order to elaborate dense ceramics, conventional sintering methods often use high temperature ( 1000°C) with long dwelling times (several hours) to achieve high relative density ( 90%).In this work, an innovative synthesis and processing approach is proposed. A fast and easy processing technique called microwave-assisted reactive sintering is used to both synthesize and sinter LATP ceramics with suitable properties in one single step. Pure and crystalline LATP ceramics can be achieved in only 10 min at 890 °C starting from amorphous, compacted LATP's precursors powders. Despite a relative density of 88%, the ionic conductivity measured at ambient temperature (3.15 x 10 -4 S.cm -1 ) is among the best reported so far. The study of the activation energy for Li + conduction confirms the high quality of the ceramic (purity and crystallinity) achieved by using this new approach, thus emphasizing its interest for making ion-conducting ceramics in a simple and fast way.

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Section: Resultsmentioning

confidence: 99%

Microwave-assisted reactive sintering and lithium ion conductivity of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte

Hallopeau

Brégiroux

Rousse

et al. 2018

Journal of Power Sources

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“…The aqueous solution based method was developed for LATP and LAGP solid electrolytes, [51,79,[81][82][83] with the aim of reducing the cost of organic solvents and sintering temperatures, to achievem ore uniform particle size distribution and smaller averagep article size. However,b othc hemicalp recursors and heat-treatment temperatures need to be carefully selectedt o achieveapure phase and prevent secondary impurities.…”

Section: Solution-based Methodsmentioning

confidence: 99%

“…However,b othc hemicalp recursors and heat-treatment temperatures need to be carefully selectedt o achieveapure phase and prevent secondary impurities. With purified water as as olvent, Jin and Nan et al [81] prepared Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 powders through as imple solution method, and found that the LATP sample sintered at 800 8Cf or 12 he xhibited the highest total ionic conductivity of 1.21 10 À3 Scm À1 at 25 8C. With purified water as as olvent, Jin and Nan et al [81] prepared Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 powders through as imple solution method, and found that the LATP sample sintered at 800 8Cf or 12 he xhibited the highest total ionic conductivity of 1.21 10 À3 Scm À1 at 25 8C.…”

Section: Solution-based Methodsmentioning

confidence: 99%

“…Key et al [51] demonstrated that ah igh purity of LATP powder was produced at annealing temperatures as lowas6 50 8C. With purified water as as olvent, Jin and Nan et al [81] prepared Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 powders through as imple solution method, and found that the LATP sample sintered at 800 8Cf or 12 he xhibited the highest total ionic conductivity of 1.21 10 À3 Scm À1 at 25 8C. (3)) in the LTP( or LiGe 2 (PO 4 ) 3 )s tructure;L i(1) is expected to be fully occupied, whereas Li partially fills Li(2) andL i(3) sites.…”

Section: Solution-based Methodsmentioning

confidence: 99%

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Synthesis and Properties of NaSICON‐type LATP and LAGP Solid Electrolytes

2019

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Inorganic solid electrolytes, in comparison with their liquid counterparts, have more potential in varioust ypes of batteries due to their dual roles of ion transportation and separation. For all-solid-state batteries, solide lectrolytes bring several advantages, [1][2][3][4][5][6] such as enhanced safety,i ncreased energy density,s olid device integration, and packaging;t hese expand the operation temperature range and potentially improve cycling stabilitya nd lifetime. Moreover,i norganic solid electrolytes are also beneficial for lithium-ion batteries and lithium-air batteries, in which they functiona se ither surface modification layers or lithium-ion conductors. [7,8] In principle, ideal solid electrolytes are expected to have several features: [9][10][11][12][13][14] 1) fast ion dynamics and negligible electronic conductivity (minimum ionic conductivity of 10 À4 Scm À1 at room temperature for practical consideration);2 )a wide electrochemical potential window for battery cycling;3 )ane xceptional mechanical strength to suppress lithium dendrite growth;4 )excellent thermal stability during the cycling processes;and 5) asimple and low cost synthetic process for large-scale applications.Generally,i norganic lithium superionic conductors are divided into three categories:o xides, sulfides, and phosphates. Suc-cessfule xamples in oxidesi nclude garnet oxides, [15,16] perovskite-type oxides, [17,18] and antiperovskite oxides. [19][20][21] Sulfide solid electrolytes include Li 2 SÀP 2 S 5 , [22,23] Li 3 PS 4 , [24][25][26] Li 7 P 3 S 11 , [27,28] Li 7 PS 6 ,a nd Li 6 PS 5 X( X = Cl, Br). [29][30][31] Popular phosphate solid electrolytes include sodium superionic conductor (NaSICON)structured lithium-ion conductors, [32][33][34][35][36] such as LiTi 2 (PO 4 ) 3 (LTP), Li 1 + x Al x Ti 2Àx (PO 4 ) 3 (LATP), and Li 1 + x Al x Ge 2Àx (PO 4 ) 3 (LAGP). Many exciting discoveries of these materials have been summarized in important review papers. [2,6,[37][38][39][40] NaSICON-type solid electrolytes, such as LATP and LAGP, have marked advantages compared with sulfides and oxides: they display chemicals tabilityi na ir and/or water,a re low cost and low toxicity,a nd have great electrochemical stability with the added benefito fe asy preparation. [2,36,38] They also exhibit attractive ionic conductivities of 10 À4 -10 À3 Scm À1 at room temperature. Such features have recently caused renewed interest in these NaSICON-structured materials and much effort has been devoted to the investigation of this type of solid electrolyte, especiallyL ATPa nd LAGP.T his manuscript reviewsr ecent progress in LATP and LAGP solid electrolytes, with as pecific focus on synthetic approaches and their effects on the crystal structures, conductive properties, and applications. Herein, general synthetic methods for LATP and LAGP solid electrolytes are first introduced, followed by ac omparison of the crystal structures, phase purities, and ionic conductivities that result from different approaches. Later,t he applications of LATP and LAGP in ful...

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“…An impurity free LATP phase was obtained as evidenced from the XRD patterns of LATP−Si at 650 °C exhibiting a NASICON structured phase indexed with hexagonal setting of the rhombohedra space group (S.G. R‐3c ) except for the presence of trace amounts of AlPO 4 . The samples were not post processed to remove AlPO 4 since it well versed in the previous literature that it can be a source for space‐charge mediation forming an AlPO 4 :Li + complex which would support the migration of Li ions . XRD patterns of pristine LATP along with LATP−Si for comparison are given in the Supplementary Information‐I ( SI‐II ).…”

Section: Resultsmentioning

confidence: 99%

High Performance Li‐ion battery Anodes based on Si Nano core in an LATP Matrix with better Electrolyte Compatibility and Temperature Resistance

2019

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Novel core/matrix morphologies of Silicon nanostructures/ LATP ceramics are synthesized through a sol ‐ gel assisted method. The Li1.3 Al0.3 Ti1.7(PO4)3 powders were coated on Si nanoparticles as an artificial SEI layer selectively conducting Li cations, which also prevents the formation of the thick natural SEI layer formation, improving the cyclic stability. The composite anodes exhibited a specific capacity of discharge capacities of 1789 mA h g−1 at 0.1 C in the ionic liquid electrolyte LiTFSI‐Pyr14TFSI. They cycle 500 times with a capacity retention of more than 75%. It is assumed that the promising electrochemical characteristics of the composite anode films are due to the absence of direct contact between the Si nanoparticles and the electrolyte and the presence of LATP providing an efficient and quick pathway for lithium ion transport and acts as a Li ion reservoir. The electrodes also show promising results with suitable ionic liquid based electrolytes at high temperature. Hence the conclusions from the present study projects LATP−Si composite films as a promising anode material for LIBs, with high capacities and long cycling stabilities at room temperature as well as high temperature.

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Preparation and evaluation of high lithium ion conductivity Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 solid electrolyte obtained using a new solution method

Cited by 114 publications

References 30 publications

Microwave-assisted reactive sintering and lithium ion conductivity of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte

Microwave-assisted reactive sintering and lithium ion conductivity of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte

Synthesis and Properties of NaSICON‐type LATP and LAGP Solid Electrolytes

High Performance Li‐ion battery Anodes based on Si Nano core in an LATP Matrix with better Electrolyte Compatibility and Temperature Resistance

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