TY - JOUR
T1 - Scalable fabrication of Solvent‐Free composite solid electrolyte by a continuous Thermal-Extrusion process
AU - Li, Zhen
AU - Aboalsaud, Ammar M.
AU - Liu, Xiaowei
AU - Thankamony, Roshni L.
AU - Chen, I. Chun
AU - Li, Yangxing
AU - Lai, Zhiping
N1 - Funding Information:
This work was financially supported by the KAUST baseline fund BAS/1/1375-01 and competitive Research Fund under Award No. URF/1/4713-01 from KAUST. S.D.W. acknowledges the KAUST Office of Sponsored Research (OSR) under Award Nos. OSR-CARF/CCF-3079, IED OSR-2019-4208 and CRG2019-4093..
Publisher Copyright:
© 2022 Elsevier Inc.
PY - 2022/12/15
Y1 - 2022/12/15
N2 - Composite solid-state electrolytes (CSEs) are regarded as a promising alternative for the next‐generation lithium-ion batteries because they integrate the advantages of inorganic electrolytes and organic electrolytes. However, there are two issues faced by current CSEs: 1) a green and feasible approach to prepare CSEs in large scales is desired; and 2) the trace solvents, remaining from the preparation processes, lead to some serious concerns, such as safety hazard issues, electrolyte–electrode interfacial issues, and reduced durability of batteries. Here, a continuous thermal-extrusion process is presented to realize the large-scale fabrication of solvent‐free CSE. A 38.7-meter CSE membrane was prepared as a demonstration in this study. Thanks to the elimination of residual solvents, the electrolyte membrane exhibited a high tensile strength of 3.85 MPa, satisfactory lithium transference number (0.495), and excellent electrochemical stability (5.15 V). Excellent long-term stability was demonstrated by operating the symmetric lithium cell at a stable current density of 0.1 mA cm−2 for over 3700 h. Solvent-free CSE lithium metal batteries showed a discharge capacity of 155.7 – 25.17 mAh g−1 at 0.1 – 2.0C, and the discharge capacity remained 78.1% after testing for 380cycles.
AB - Composite solid-state electrolytes (CSEs) are regarded as a promising alternative for the next‐generation lithium-ion batteries because they integrate the advantages of inorganic electrolytes and organic electrolytes. However, there are two issues faced by current CSEs: 1) a green and feasible approach to prepare CSEs in large scales is desired; and 2) the trace solvents, remaining from the preparation processes, lead to some serious concerns, such as safety hazard issues, electrolyte–electrode interfacial issues, and reduced durability of batteries. Here, a continuous thermal-extrusion process is presented to realize the large-scale fabrication of solvent‐free CSE. A 38.7-meter CSE membrane was prepared as a demonstration in this study. Thanks to the elimination of residual solvents, the electrolyte membrane exhibited a high tensile strength of 3.85 MPa, satisfactory lithium transference number (0.495), and excellent electrochemical stability (5.15 V). Excellent long-term stability was demonstrated by operating the symmetric lithium cell at a stable current density of 0.1 mA cm−2 for over 3700 h. Solvent-free CSE lithium metal batteries showed a discharge capacity of 155.7 – 25.17 mAh g−1 at 0.1 – 2.0C, and the discharge capacity remained 78.1% after testing for 380cycles.
KW - Composite electrolyte
KW - Micro-compounder
KW - Polymer in ceramic
KW - Solid-state lithium-ion battery
KW - Solvent-free
UR - http://www.scopus.com/inward/record.url?scp=85134887594&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2022.07.099
DO - 10.1016/j.jcis.2022.07.099
M3 - Article
C2 - 35908432
AN - SCOPUS:85134887594
SN - 0021-9797
VL - 628
SP - 64
EP - 71
JO - Journal of colloid and interface science
JF - Journal of colloid and interface science
ER -
