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Title: Thick Binder-Free Electrodes for Li-Ion Battery Fabricated Using Templating Approach and Spark Plasma Sintering Reveals High Areal Capacity

The templating approach is a powerful method for preparing porous electrodes with interconnected well-controlled pore sizes and morphologies. The optimization of the pore architecture design facilitates electrolyte penetration and provides a rapid diffusion path for lithium ions, which becomes even more crucial for thick porous electrodes. In this work, NaCl microsize particles are used as a templating agent for the fabrication of 1 mm thick porous LiFePO 4 and Li 4Ti 5O 12 composite electrodes using spark plasma sintering technique. These sintered binder-free electrodes are self-supported and present a large porosity (40%) with relatively uniform pores. The electrochemical performances of half and full batteries reveal a remarkable specific areal capacity (20 mA h cm -2), which is 4 times higher than those of 100 µm thick electrodes present in conventional tape-casted Li–ion batteries (5 mA h cm -2). The 3D morphological study is carried out using full field transmission X-ray microscopy in microcomputed tomography mode to obtain tortuosity values and pore size distributions leading to a strong correlation with their electrochemical properties. These results also demonstrate that the coupling between the salt templating method and the spark plasma sintering technique turns out to be a promising way to fabricate thickmore » electrodes with high energy density.« less
Authors:
 [1] ;  [1] ;  [2] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Univ. of Picardie Jules Verne, Amiens (France). Lab. of Reactivity and Solid State Chemistry (LRCS); French Network on Electrochemical Storage of Energy (RS2E), Amiens (France)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 8; Journal Issue: 15; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; Ministry of Higher Education, Research and Innovation (MESRI) (France)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; LiFePO4/Li4Ti5O12 Li-ion batteries; SPS technique; TXM microcomputed tomography; templating approach; thick and binder-free electrodes
OSTI Identifier:
1476310
Alternate Identifier(s):
OSTI ID: 1418698

Elango, Rakesh, Demortière, Arnaud, De Andrade, Vincent, Morcrette, Mathieu, and Seznec, Vincent. Thick Binder-Free Electrodes for Li-Ion Battery Fabricated Using Templating Approach and Spark Plasma Sintering Reveals High Areal Capacity. United States: N. p., Web. doi:10.1002/aenm.201703031.
Elango, Rakesh, Demortière, Arnaud, De Andrade, Vincent, Morcrette, Mathieu, & Seznec, Vincent. Thick Binder-Free Electrodes for Li-Ion Battery Fabricated Using Templating Approach and Spark Plasma Sintering Reveals High Areal Capacity. United States. doi:10.1002/aenm.201703031.
Elango, Rakesh, Demortière, Arnaud, De Andrade, Vincent, Morcrette, Mathieu, and Seznec, Vincent. 2018. "Thick Binder-Free Electrodes for Li-Ion Battery Fabricated Using Templating Approach and Spark Plasma Sintering Reveals High Areal Capacity". United States. doi:10.1002/aenm.201703031.
@article{osti_1476310,
title = {Thick Binder-Free Electrodes for Li-Ion Battery Fabricated Using Templating Approach and Spark Plasma Sintering Reveals High Areal Capacity},
author = {Elango, Rakesh and Demortière, Arnaud and De Andrade, Vincent and Morcrette, Mathieu and Seznec, Vincent},
abstractNote = {The templating approach is a powerful method for preparing porous electrodes with interconnected well-controlled pore sizes and morphologies. The optimization of the pore architecture design facilitates electrolyte penetration and provides a rapid diffusion path for lithium ions, which becomes even more crucial for thick porous electrodes. In this work, NaCl microsize particles are used as a templating agent for the fabrication of 1 mm thick porous LiFePO4 and Li4Ti5O12 composite electrodes using spark plasma sintering technique. These sintered binder-free electrodes are self-supported and present a large porosity (40%) with relatively uniform pores. The electrochemical performances of half and full batteries reveal a remarkable specific areal capacity (20 mA h cm-2), which is 4 times higher than those of 100 µm thick electrodes present in conventional tape-casted Li–ion batteries (5 mA h cm-2). The 3D morphological study is carried out using full field transmission X-ray microscopy in microcomputed tomography mode to obtain tortuosity values and pore size distributions leading to a strong correlation with their electrochemical properties. These results also demonstrate that the coupling between the salt templating method and the spark plasma sintering technique turns out to be a promising way to fabricate thick electrodes with high energy density.},
doi = {10.1002/aenm.201703031},
journal = {Advanced Energy Materials},
number = 15,
volume = 8,
place = {United States},
year = {2018},
month = {1}
}

Works referenced in this record:

A comprehensive understanding of electrode thickness effects on the electrochemical performances of Li-ion battery cathodes
journal, June 2012

Solid-state thin-film rechargeable batteries
journal, February 2005