TY - JOUR
T1 - Tailored Carrier Transport Path by Interpenetrating Networks in Cathode Composite for High Performance All-Solid-State Li-SeS2 Batteries
AU - Zhou, Lei
AU - Tufail, Muhammad Khurram
AU - Liao, Yaozu
AU - Ahmad, Niaz
AU - Yu, Peiwen
AU - Song, Tinglu
AU - Chen, Renjie
AU - Yang, Wen
N1 - Publisher Copyright:
© 2022, Donghua University, Shanghai, China.
PY - 2022/6
Y1 - 2022/6
N2 - All-solid-state Li-SeS2 batteries (ASSLSs) are more attractive than traditional liquid Li-ion batteries due to superior thermal stability and higher energy density. However, various factors limit the practical application of all-solid-state Li-SeS2 batteries, such as the low ionic conductivity of the solid-state electrolyte and the poor kinetic property of the cathode composite, resulting in unsatisfactory rate capability. Here, we employed a traditional ball milling method to design a Li7P2.9W0.05S10.85 glass–ceramic electrolyte with high conductivity of 2.0 mS cm− 1 at room temperature. In order to improve the kinetic property, an interpenetrating network strategy is proposed for rational cathode composite design. Significantly, the disordered cathode composite with an interpenetrating network could promote electronic and ionic conduction and intimate contacts between the electrolyte–electrode particles. Moreover, the tortuosity factor of the carrier transport channel is considerably reduced in electrode architectures, leading to superior kinetic performance. Thus, assembled ASSLS exhibited higher capacity and better rate capability than its counterpart. This work demonstrates that an interpenetrating network is essential for improving carrier transport in cathode composite for high rate all-solid-state Li-SeS2 batteries. Graphical abstract: [Figure not available: see fulltext.]
AB - All-solid-state Li-SeS2 batteries (ASSLSs) are more attractive than traditional liquid Li-ion batteries due to superior thermal stability and higher energy density. However, various factors limit the practical application of all-solid-state Li-SeS2 batteries, such as the low ionic conductivity of the solid-state electrolyte and the poor kinetic property of the cathode composite, resulting in unsatisfactory rate capability. Here, we employed a traditional ball milling method to design a Li7P2.9W0.05S10.85 glass–ceramic electrolyte with high conductivity of 2.0 mS cm− 1 at room temperature. In order to improve the kinetic property, an interpenetrating network strategy is proposed for rational cathode composite design. Significantly, the disordered cathode composite with an interpenetrating network could promote electronic and ionic conduction and intimate contacts between the electrolyte–electrode particles. Moreover, the tortuosity factor of the carrier transport channel is considerably reduced in electrode architectures, leading to superior kinetic performance. Thus, assembled ASSLS exhibited higher capacity and better rate capability than its counterpart. This work demonstrates that an interpenetrating network is essential for improving carrier transport in cathode composite for high rate all-solid-state Li-SeS2 batteries. Graphical abstract: [Figure not available: see fulltext.]
KW - All-Solid-State Li-SeS batteries
KW - Carrier transport
KW - Cathode composite
KW - Interpenetrating network
KW - Tortuosity factors
UR - http://www.scopus.com/inward/record.url?scp=85130471925&partnerID=8YFLogxK
U2 - 10.1007/s42765-021-00123-6
DO - 10.1007/s42765-021-00123-6
M3 - Article
AN - SCOPUS:85130471925
SN - 2524-7921
VL - 4
SP - 487
EP - 502
JO - Advanced Fiber Materials
JF - Advanced Fiber Materials
IS - 3
ER -