TY - JOUR
T1 - Sandwich-Structured Ordered Mesoporous Polydopamine/MXene Hybrids as High-Performance Anodes for Lithium-Ion Batteries
AU - Li, Tao
AU - Ding, Bing
AU - Wang, Jie
AU - Qin, Zongyi
AU - Fernando, Joseph F.S.
AU - Bando, Yoshio
AU - Nanjundan, Ashok Kumar
AU - Kaneti, Yusuf Valentino
AU - Golberg, Dmitri
AU - Yamauchi, Yusuke
N1 - Funding Information:
The authors gratefully acknowledge the financial support from the Australian Research Council (ARC) Future Fellow (grant FT150100479), ARC Linkage (LP180100429), Natural Science Foundation of Jiangsu Province (no. BK20170778), and NSFC (nos. 51672128, 21773118, and U1802256). T.L. acknowledges the funding provided by the Fundamental Research Funds for the Central Universities (CUSF-DH-D-2018001) and the China Scholarship Council (201806630044). J.W. and B.D. thank the Japan Society for the Promotion of Science (JSPS) for providing the JSPS Fellowships (18F18038 and 18F18764). D.G. is grateful for granting an Australian Research Council (ARC) Laureate Fellowship (FL160100089). D.G. and J.F.S.F. also thank the QUT Projects (nos. 323000-0355/51 and 323000-0348/07) and Centre for Materials Science of QUT for financial support. This work was partly conducted at the Queensland node of the Australian National Fabrication Facility Queensland Node (ANFF-Q), a company established under the National Collaborative Research Infrastructure Strategy to provide nano- and microfabrication facilities for Australian researchers.
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Organic polymers have attracted significant interest as electrodes for energy storage devices because of their advantages, including molecular flexibility, cost-effectiveness, and environmentally friendly nature. Nevertheless, the real implementation of polymer-based electrodes is restricted by their poor stability, low capacity, and slow electron-transfer/ion diffusion kinetics. In this work, a sandwich-structured composite of ordered mesoporous polydopamine (OMPDA)/Ti3C2Tx has been fabricated by in situ polymerization of dopamine on the surface of Ti3C2Tx via employing the PS-b-PEO block polymer as a soft template. The OMPDA layers with vertically oriented, accessible nanopores (âˆ20 nm) provide a continuous pore channel for ion diffusion, while the Ti3C2Tx layers guarantee a fast electron-transfer path. The OMPDA/Ti3C2Tx composite anode exhibits high reversible capacity, good rate performance, and excellent cyclability for lithium-ion batteries. The in situ transmission electron microscopy analysis reveals that the OMPDA in the composite only shows a small volume expansion and almost preserves the initial morphology during lithiation. Moreover, these in situ experiments also demonstrate the generation of a stable and ultrathin solid electrolyte interphase layer surrounding the active material, which acts as an electrode protective film during cycling. This study demonstrates the method to develop polymer-based electrodes for high-performance rechargeable batteries.
AB - Organic polymers have attracted significant interest as electrodes for energy storage devices because of their advantages, including molecular flexibility, cost-effectiveness, and environmentally friendly nature. Nevertheless, the real implementation of polymer-based electrodes is restricted by their poor stability, low capacity, and slow electron-transfer/ion diffusion kinetics. In this work, a sandwich-structured composite of ordered mesoporous polydopamine (OMPDA)/Ti3C2Tx has been fabricated by in situ polymerization of dopamine on the surface of Ti3C2Tx via employing the PS-b-PEO block polymer as a soft template. The OMPDA layers with vertically oriented, accessible nanopores (âˆ20 nm) provide a continuous pore channel for ion diffusion, while the Ti3C2Tx layers guarantee a fast electron-transfer path. The OMPDA/Ti3C2Tx composite anode exhibits high reversible capacity, good rate performance, and excellent cyclability for lithium-ion batteries. The in situ transmission electron microscopy analysis reveals that the OMPDA in the composite only shows a small volume expansion and almost preserves the initial morphology during lithiation. Moreover, these in situ experiments also demonstrate the generation of a stable and ultrathin solid electrolyte interphase layer surrounding the active material, which acts as an electrode protective film during cycling. This study demonstrates the method to develop polymer-based electrodes for high-performance rechargeable batteries.
KW - MXene
KW - in situ transmission electron microscopy
KW - lithium-ion batteries
KW - ordered mesoporous polydopamine
KW - sandwich structure
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U2 - 10.1021/acsami.9b18883
DO - 10.1021/acsami.9b18883
M3 - Article
C2 - 32186368
AN - SCOPUS:85082335192
SN - 1944-8244
VL - 12
SP - 14993
EP - 15001
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 13
ER -
