scholarly journals Spark Plasma Sintering of LiFePO4: AC Field Suppressing Lithium Migration

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2826
Author(s):  
Nan Luo ◽  
Yong Lin ◽  
Jian Guo ◽  
Emanuele Quattrocchi ◽  
Huaijiu Deng ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Photoelectron Spectroscopy ◽  
Inductively Coupled Plasma ◽  
High Performance ◽  
Optical Emission ◽  
Ion Migration ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Li Ion ◽  
Ac Field

Our work proposes a comparison between Spark Plasma Sintering of LiFePO4 carried out using an Alternating Current (AC) and Direct Current (DC). It quantifies the Li-ion migration using DC, and it validates such hypothesis using impedance spectroscopy, X-ray photoelectron spectroscopy and inductively coupled plasma optical emission spectroscopy. The use of an AC field seems effective to inhibit undesired Li-ion migration and achieve high ionic conductivity as high as 4.5 × 10−3 S/cm, which exceeds by one order of magnitude samples processed under a DC field. These results anticipate the possibility of fabricating a high-performance all-solid-state Li-ion battery by preventing undesired Li loss during SPS processing.

scholarly journals Impact of electrode porosity architecture on electrochemical performances of 1 mm-thick LiFePO4 binder-free Li-ion electrodes fabricated by Spark Plasma Sintering

2021 ◽  
Vol 488 ◽  
pp. 229402
Author(s):  
Rakesh Elango ◽  
Arina Nadeina ◽  
François Cadiou ◽  
Vincent De Andrade ◽  
Arnaud Demortière ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Electrochemical Performances ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Binder Free ◽  
Li Ion

Improved performance of SrFe12O19 bulk magnets through bottom-up nanostructuring

Nanoscale ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 2857-2866 ◽  
Author(s):  
Matilde Saura-Múzquiz ◽  
Cecilia Granados-Miralles ◽  
Marian Stingaciu ◽  
Espen Drath Bøjesen ◽  
Qiang Li ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
High Performance ◽  
Single Domain ◽  
Bottom Up ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Improved Performance ◽  
Supercritical Synthesis

High-performance hexaferrite magnets of aligned single-domain nanoplatelets are obtained by supercritical synthesis and compaction through Spark Plasma Sintering.

scholarly journals Enhancing copper infiltration into alumina using spark plasma sintering to achieve high performance Al2O3/Cu composites

2018 ◽  
Vol 44 (1) ◽  
pp. 57-64 ◽  
Author(s):  
Yingge Shi ◽  
Wenge Chen ◽  
Longlong Dong ◽  
Hanyan Li ◽  
Yongqing Fu
Keyword(s):  
Spark Plasma Sintering ◽  
High Performance ◽  
Plasma Sintering ◽  
Spark Plasma

High-performance Ag0.8Pb18+xSbTe20 thermoelectric bulk materials fabricated by mechanical alloying and spark plasma sintering

2006 ◽  
Vol 88 (9) ◽  
pp. 092104 ◽  
Author(s):  
Heng Wang ◽  
Jing-Feng Li ◽  
Ce-Wen Nan ◽  
Min Zhou ◽  
Weishu Liu ◽  
...  
Keyword(s):  
Mechanical Alloying ◽  
Spark Plasma Sintering ◽  
High Performance ◽  
Bulk Materials ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Microstructure Evolution of Mg96.9Gd2.7Zn0.4 Alloy Containing Multiple Phases Prepared by Spark Plasma Sintering Method

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1355
Author(s):  
Zhiyong Xue ◽  
Xiuzhu Han ◽  
Wenbo Luo ◽  
Zhiyong Zhou ◽  
Zhizhong Cheng ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Rapid Solidification ◽  
High Performance ◽  
Aging Treatment ◽  
Lpso Phase ◽  
Β Phase ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Molten Liquid ◽  
Sintering Method

The synergic strengthening of multiple phases is an essential way to achieve high-performance Mg alloys. Herein, Mg-Gd-Zn alloy containing four phases was prepared by rapid solidification (RS) ribbons and spark plasma sintering (SPS). The microstructure of the alloy consisted of α-Mg, nanosized β1 phase particles, lamellar long period stacking ordered (LPSO) phase, and β′ phase precipitates. The microstructural evolution was also investigated. The results show that the metastable β1 phase was formed in the as-cast solidification through rapid solidification, because both Zn atoms and the short holding-time at molten liquid facilitated the formation of the β1 phase. The β1 phase grew from 35.6 to 154 nm during the sintering process. Meanwhile, the fine lamellar LPSO phase was simultaneously formed after the Zn-Gd clusters were generated from the supersaturated solid solution, and the width of the LPSO phase was only in the range of 2–30 nm. The third strengthening phase, the metastable β′ phase, was obtained by aging treatment. The results of hardness testing implied that the hardness of the alloy containing the aforementioned three nanosized strengthening phases significantly improved about 47% to 126 HV compared with that of the as-cast ingot.

Preparation of high performance bulk Fe–N alloy by spark plasma sintering

2016 ◽  
Vol 90 ◽  
pp. 115-121 ◽  
Author(s):  
Guodong Cui ◽  
Xialu Wei ◽  
Eugene A. Olevsky ◽  
Randall M. German ◽  
Junying Chen
Keyword(s):  
Spark Plasma Sintering ◽  
High Performance ◽  
Plasma Sintering ◽  
Spark Plasma

Structure and properties of a tungsten-free hard alloy based on titanium carbonitride sintered from electroerosive powders obtained in a carbon-containing medium

2021 ◽  
pp. 158-161
Author(s):  
E.V. Ageeva ◽  
B.N. Sabel’nikov
Keyword(s):  
Hard Alloy ◽  
Spark Plasma Sintering ◽  
High Performance ◽  
Experimental Studies ◽  
Titanium Carbonitride ◽  
Structure And Properties ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method ◽  
Favorable Structure

The results of experimental studies of a KNT16 tungsten-free hard alloy sintered from electroerosive powders obtained in ethyl alcohol are presented. It is shown that the use of the spark plasma sintering method to produce products from powder obtained by electroerosive dispersion of the alloy KNT16 will ensure high performance of parts due to the uniformity of the surface, favorable structure and low porosity of the product.

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