2D film of carbon nanofibers elastically astricted MnO microparticles: A flexible binder-free anode for highly reversible lithium ion storage

Wang, Ting, Li, Hangang, Shi, Shaojun, Liu, Ting, Yang, Gang, Chao, Yimin ORCID: https://orcid.org/0000-0002-8488-2690 and Yin, Fan (2017) 2D film of carbon nanofibers elastically astricted MnO microparticles: A flexible binder-free anode for highly reversible lithium ion storage. Small, 13 (20). ISSN 1613-6810

Preview

PDF (Accepted manuscript) - Accepted Version Download (1MB) | Preview

Abstract

MnO as anode materials has received particular interest owing to its high specific capacity, abundant resources and low cost. However, it is still a serious problem that large volume change (>170%) during the lithiation/delithiation processes results in poor rate capability and fast capacity decay. With homogenous crystals of MnO grown in the network of carbon nanofibers(CNF)，binding effect of CNFs can effectively weaken the volume change of MnO during cycles. In this work, CNF/MnO flexible electrode for lithium-ion batteries is designed and synthesized. The carbon nanofibers play the roles of conductive channel and elastically astricting MnO particles during lithiation/delithiation. CNF/MnO as binder-free anode delivers specific capacity of 983.8 mAh g−1 after 100th cycle at a current density of 0.2 A g−1, and 600 mAh g−1 at 1 A g−1 which are much better than those of pure MnO and pure CNF. The ex-situ FESEM images of CNF/MnO clearly show the relative volume change of MnO/CNF as anode under various discharging and charging time. CNFs can elastically buffer the volume change of MnO during charging/discharging cycles. This work presents a facile and scalable approach for synthesizing a novel flexible binder-free anode of CNF/MnO for potential application in highly reversible lithium storage devices.

Item Type:	Article
Uncontrolled Keywords:	lithium-ion batteries,flexible films,binder-free anode materials,composite structure,electrochemical performance,sdg 7 - affordable and clean energy ,/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy
Faculty \ School:	Faculty of Science > School of Chemistry (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017) Faculty of Science > Research Groups > Chemistry of Materials and Catalysis Faculty of Science > Research Groups > Energy Materials Laboratory
Depositing User:	Pure Connector
Date Deposited:	28 Feb 2017 01:45
Last Modified:	25 Sep 2024 12:36
URI:	https://ueaeprints.uea.ac.uk/id/eprint/62734
DOI:	10.1002/smll.201604182

Downloads

Actions (login required)

View Item