scholarly journals LiF Assisted Synthesis Perovskite-type Li0.35La0.55TiO3 Solid Electrolyte for Rechargeable Lithium-metal Batteries

2020 ◽  
Author(s):  
Zhongran Yao ◽  
Jie Zhang ◽  
K.J. Zhu ◽  
Jun Li ◽  
Xia Li ◽  
...  
Keyword(s):  
Solid State ◽  
Specific Capacity ◽  
Solid State Reaction Method ◽  
Total Conductivity ◽  
Electrochemical Performances ◽  
Battery System ◽  
Sintering Additive ◽  
Lithium Metal Batteries ◽  
Solid State Batteries ◽  
Perovskite Type

Abstract Perovskite-type solid-state electrolytes, Li0.35La0.55TiO3-xwt% LiF (LLTO-Fx, x = 0, 2, 4 and 6), were successfully synthesized through solid-state reaction method. The effects of LiF addition amount on LLTO crystal structure, morphologies and ionic conductivity have been investigated. All samples formed perovskite structure and the grain sizes were gradually increased with the increase of LiF content. Moreover, owing to the highest relative density (95.4%), LLTO-F2 electrolyte exhibited a highest total conductivity of 1.02×10-4 S/cm with a relative low activation energy of 0.26 eV, which is suitable for use in solid-state batteries. The cell Li/LLTO-F2/V2O5 exhibited a specific capacity about 270 mAh/g in the first few cycles and maintained 156 mAh/g after 100 cycles, demonstrating good cycling properties. Moreover, cells assembled with different cathodes, such as LiFePO4 and LiCoO2, also displayed excellent electrochemical performances. The results suggest that sintering additive (LiF) is very effective step towards ultimately achieve a safe solid-state lithium battery system.

scholarly journals Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 946
Author(s):  
Qianyi Yang ◽  
Fuqiang Lu ◽  
Yulin Liu ◽  
Yijie Zhang ◽  
Xiujuan Wang ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Transference Number ◽  
Electrochemical Stability ◽  
Ion Conductivity ◽  
Solid State Batteries ◽  
Li Ion ◽  
Conduction Properties

Solid electrolytes with high Li-ion conductivity and electrochemical stability are very important for developing high-performance all-solid-state batteries. In this work, Li2(BH4)(NH2) is nanoconfined in the mesoporous silica molecule sieve (SBA-15) using a melting–infiltration approach. This electrolyte exhibits excellent Li-ion conduction properties, achieving a Li-ion conductivity of 5.0 × 10−3 S cm−1 at 55 °C, an electrochemical stability window of 0 to 3.2 V and a Li-ion transference number of 0.97. In addition, this electrolyte can enable the stable cycling of Li|Li2(BH4)(NH2)@SBA-15|TiS2 cells, which exhibit a reversible specific capacity of 150 mAh g−1 with a Coulombic efficiency of 96% after 55 cycles.

Creep and Anisotropy of Free-Standing Lithium Metal Foils in an Industrial Dry Room

2021 ◽  
pp. 1-32
Author(s):  
Lara Dienemann ◽  
Anil Saigal ◽  
Michael A Zimmerman
Keyword(s):  
Mechanical Properties ◽  
Solid State ◽  
High Volume ◽  
Dominant Mode ◽  
Lithium Metal ◽  
Free Standing ◽  
Metal Anode ◽  
Lithium Metal Batteries ◽  
Lithium Metal Anode ◽  
Solid State Batteries

Abstract Commercialization of energy-dense lithium metal batteries relies on stable and uniform plating and stripping on the lithium metal anode. In electrochemical-mechanical modeling of solid-state batteries, there is a lack of consideration of specific mechanical properties of battery-grade lithium metal. Defining these characteristics is crucial for understanding how lithium ions plate on the lithium metal anode, how plating and stripping affect deformation of the anode and its interfacing material, and whether dendrites are suppressed. Recent experiments show that the dominant mode of deformation of lithium metal is creep. This study measures the time and temperature dependent mechanics of two thicknesses of commercial lithium anodes inside an industrial dry room, where battery cells are manufactured at high volume. Furthermore, a directional study examines the anisotropic microstructure of 100 µm thick lithium anodes and its effect on bulk creep mechanics. It is shown that these lithium anodes undergo plastic creep as soon as a coin cell is manufactured at a pressure of 0.30 MPa, and achieving thinner lithium foils, a critical goal for solid-state lithium batteries, is correlated to anisotropy in both lithium's microstructure and mechanical properties.

scholarly journals Synthesis and electrochemical performances of Na3V2(PO4)2F3/C composites as cathode materials for sodium ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30628-30636 ◽  
Author(s):  
Mingxue Wang ◽  
Xiaobing Huang ◽  
Haiyan Wang ◽  
Tao Zhou ◽  
Huasheng Xie ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Source ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Sodium Ion Batteries ◽  
Rate Performance ◽  
Cycle Stability ◽  
Reaction Method

Na3V2(PO4)2F3/C composites were synthesized by a solid-state reaction method using pitch as the carbon source, the as-prepared sample with the carbon content of 12.14% possesses an excellent rate performance and cycle stability.

Fine-Particle Lithium Iron Phosho-Olivine Synthesized by a Novel Modified Solid-State Reaction

2007 ◽  
Vol 336-338 ◽  
pp. 524-525
Author(s):  
Rong Yang ◽  
Xiao Ping Song ◽  
Xiu Fen Pang ◽  
Ming Shu Zhao ◽  
Fei Wang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Specific Capacity ◽  
Solid State Reaction Method ◽  
Phase Reaction ◽  
Two Phase ◽  
Reaction Proceeds ◽  
Initial Charge ◽  
Xrd Patterns

In this paper, homogeneous and well-crystallized LiFePO4 was synthesized by a novel modified solid-state reaction method following by heat treatment at relatively low temperature of 500°C in Ar. No impurities are detected in the XRD patterns. The initial charge specific capacity and discharge specific capacity reach 157.2mAhg-1 and 152.6mAhg-1 respectively at 20°C. Voltage plateaus at around 3.45V were observed in all the curves, indicating that the charge and discharge reaction proceeds as a two-phase reaction. The initial charge specific capacity is 157.2mAhg-1 at 0.1C rate, i.e. 92% of the theoretical capacity, and specific capacity decreases slightly after 100 circles at room temperature.

Surfactants assisted synthesis of nano-LiFePO4/C composite as cathode materials for lithium-ion batteries

2015 ◽  
Vol 3 (5) ◽  
pp. 2025-2035 ◽  
Author(s):  
Qingyu Li ◽  
Fenghua Zheng ◽  
Youguo Huang ◽  
Xiaohui Zhang ◽  
Qiang Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Solid State Reaction ◽  
Lithium Ion ◽  
Solid State Reaction Method ◽  
Electrochemical Performances ◽  
Reaction Method

The solid state reaction method was applied to prepare a series of LiFePO4/C materials by adding various surfactants. The as-prepared LiFePO4/C particles using various surfactants show different electrochemical performances.

A 3D polyacrylonitrile nanofiber and flexible polydimethylsiloxane macromolecule combined all-solid-state composite electrolyte for efficient lithium metal batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (26) ◽  
pp. 14279-14289 ◽  
Author(s):  
Lu Gao ◽  
Jianxin Li ◽  
Bushra Sarmad ◽  
Bowen Cheng ◽  
Weimin Kang ◽  
...  
Keyword(s):  
Solid State ◽  
Composite Polymer Electrolyte ◽  
Lithium Metal ◽  
Composite Polymer ◽  
Composite Electrolyte ◽  
Lithium Metal Batteries ◽  
Excellent Electrochemical Performance ◽  
Solid State Batteries ◽  
All Solid State Batteries ◽  
Inhibition Ability

A composite polymer electrolyte is synthesized, which has an improved ionic conductivity, superior interface compatibility and sufficient dendrite inhibition ability, bringing excellent electrochemical performance to all-solid-state batteries.

Preparation of Porous LSM/YSZ Composite with Varying Grain Size of YSZ Precursor Using Solid State Reaction Method

2018 ◽  
Vol 917 ◽  
pp. 93-97 ◽  
Author(s):  
Romar Angelo M. Avila ◽  
Trina G. Tambago ◽  
Rinlee Butch M. Cervera
Keyword(s):  
Grain Size ◽  
Solid State ◽  
Solid State Reaction ◽  
Electrochemical Impedance ◽  
Weight Ratio ◽  
Solid State Reaction Method ◽  
Electrolysis Cell ◽  
Total Conductivity ◽  
Pore Former ◽  
Reaction Method

Lanthanum strontium manganite (LSM) and yttria-stabilized zirconia (YSZ) composite is a promising material as an anode for solid oxide electrolysis cell (SOEC) applications. In this study, LSM/YSZ with a 1:1 LSM to YSZ weight ratio was synthesized via solid state reaction method using oxide precursors of commercial micrograined size LSM with varying YSZ precursor grain size. For the YSZ precursor, both nanograined (nanoYSZ) and micrograined YSZ (microYSZ) precursors were studied. Graphite was added at 10% weight ratio as a pore former. Density measurements using Archimedes principle revealed that LSM/nanoYSZ had the highest relative density of 97.8%, whereas LSM/nanoYSZ with graphite had the lowest density of 89.1%. The addition of graphite to LSM/nanoYSZ reduced the density by 8.7% compared to the decrease of 5.5% for LSM/microYSZ. Scanning electron microscopy confirms that the addition of graphite has a greater effect on the microstructure of LSM/nanoYSZ as compared to LSM/microYSZ. The electrochemical impedance spectroscopy results show that the samples with nanoYSZ had a higher total conductivity than the samples with microYSZ. LSM/nanoYSZ and LSM/nanoYSZ with graphite revealed a total conductivity values of 0.0470 Scm-1and 0.0440 Scm-1at 700 °C with activation energies of 0.0178 eV and 0.0234 eV, respectively.

scholarly journals Densification of a NASICON-Type LATP Electrolyte Sheet by a Cold-Sintering Process

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4737
Author(s):  
Naoki Hamao ◽  
Yuki Yamaguchi ◽  
Koichi Hamamoto
Keyword(s):  
Reaction Time ◽  
Solid State ◽  
Grain Boundary ◽  
Porous Structure ◽  
Total Conductivity ◽  
Sintering Process ◽  
Essential Factor ◽  
Nasicon Type ◽  
Solid State Batteries ◽  
All Solid State Batteries

A NASICON-type Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte sheet for all-solid-state batteries was fabricated by a cold sintering process (CSP). The microstructure of the LATP sheet was controlled to improve the wettability which is an essential factor in CSP. The porous sheets of LATP were prepared by calcination the green sheets to remove the organic components and form the porous structure. By the CSP using the porous sheets, the densification of grain boundary was observed and further densified with increasing reaction time. The total conductivity of the prepared LATP sheet was improved from 3.0 × 10−6 S/cm to 3.0 × 10−4 S/cm due to the formation of necks between the particles at the grain boundary.

scholarly journals Preparation and Application of Garnet Electrolyte Thin Films: Promise and Challenges

2020 ◽  
pp. 6-22 ◽  
Author(s):  
Xufeng Yan ◽  
Weiqiang Han
Keyword(s):  
Thin Film ◽  
Solid State ◽  
Energy Density ◽  
Solid Electrolyte ◽  
High Energy ◽  
High Energy Density ◽  
Electrochemical Performances ◽  
Safety Property ◽  
Solid State Batteries ◽  
All Solid State Batteries

All-solid-state batteries (ASSBs) have attracted much attention in recent years, due to their high energy density, excellent cycling performance, and superior safety property. As the key factor of all-solid-state batteries, solid electrolyte determines the performance of the batteries. Garnet-typed cubic Li7La3Zr2O12(LLZO) has been reported as the most promising solid electrolyte on the way to ASSBs. Thin film electrolyte could contribute to a higher energy density and a lower resistance in a battery. This short review exhibits the latest efforts on LLZO thin film and discusses the different preparation methods, together with their effects on characteristics and electrochemical performances of the solid electrolyte film.

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