|
1
|
Flash Spark Plasma Sintering of 3YSZ: Modified sintering pathway and impact on grain boundary formation. Ann Ital Chir 2021. [DOI: 10.1016/j.jeurceramsoc.2021.08.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
|
2
|
Luo N, Lin Y, Guo J, Quattrocchi E, Deng H, Dong J, Ciucci F, Boi F, Hu C, Grasso S. Spark Plasma Sintering of LiFePO 4: AC Field Suppressing Lithium Migration. MATERIALS 2021; 14:ma14112826. [PMID: 34070590 PMCID: PMC8198947 DOI: 10.3390/ma14112826] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 05/21/2021] [Indexed: 11/16/2022]
Abstract
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.
Collapse
Affiliation(s)
- Nan Luo
- Key Laboratory of Advanced technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (N.L.); (Y.L.); (H.D.); (J.D.); (C.H.)
| | - Yong Lin
- Key Laboratory of Advanced technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (N.L.); (Y.L.); (H.D.); (J.D.); (C.H.)
| | - Jian Guo
- College of Physics, Sichuan University, Chengdu 610064, China; (J.G.); (F.B.)
| | - Emanuele Quattrocchi
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; (E.Q.); (F.C.)
| | - Huaijiu Deng
- Key Laboratory of Advanced technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (N.L.); (Y.L.); (H.D.); (J.D.); (C.H.)
| | - Jian Dong
- Key Laboratory of Advanced technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (N.L.); (Y.L.); (H.D.); (J.D.); (C.H.)
| | - Francesco Ciucci
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; (E.Q.); (F.C.)
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Filippo Boi
- College of Physics, Sichuan University, Chengdu 610064, China; (J.G.); (F.B.)
| | - Chunfeng Hu
- Key Laboratory of Advanced technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (N.L.); (Y.L.); (H.D.); (J.D.); (C.H.)
| | - Salvatore Grasso
- Key Laboratory of Advanced technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; (N.L.); (Y.L.); (H.D.); (J.D.); (C.H.)
- Correspondence: ; Tel.: +183-2867-6558
| |
Collapse
|
|
3
|
|
|
4
|
Gorynski C, Anselmi-Tamburini U, Winterer M. Controlling current flow in sintering: A facile method coupling flash with spark plasma sintering. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:015112. [PMID: 32012646 DOI: 10.1063/1.5119059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
A facile method is described to couple flash sintering (FS) and spark plasma sintering (SPS). Flash spark plasma sintering (FSPS) combines advantages of both techniques: the use of pellet-shaped samples under mechanical load with the controlled passage of electric current through the sample. FSPS is realized by partially replacing graphite pressing tools (two punches and one matrix) used in standard SPS. An insulating boron nitride matrix substitutes the conducting graphite matrix to force the electric current through the sample. Additionally, external heating of the boron nitride matrix is implemented. Microstructures of standard and flash-SPS are compared using aluminum doped zinc oxide as an example. Scanning electron microscopy reveals that different microstructures are generated for SPS and FSPS. The new setups provide novel processing routes for different current sintering methods of materials under mechanical load and assist in identifying the role of the electric current or field in the microstructure.
Collapse
Affiliation(s)
- C Gorynski
- Nanoparticle Process Technology, Department of Mechanical Engineering and CENIDE, University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany
| | - U Anselmi-Tamburini
- Department of Chemistry, University of Pavia, Via Torquato Taramelli 12, 27100 Pavia, Italy
| | - M Winterer
- Nanoparticle Process Technology, Department of Mechanical Engineering and CENIDE, University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany
| |
Collapse
|