Facile synthesis of free-standing, flexible hard carbon anode for high-performance sodium ion batteries using graphene as a multi-functional binder
By Sun, Ning; Guan, Yibiao; Liu, Yi-Tao; Zhu, Qizhen; Shen, Jinran; Liu, Huan; Zhou, Shuqin; Xu, Bin
Published in Carbon
2018
Abstract
The use of reduced graphene oxide (rGO) as an environmentally friendly, multi-functional conductive binder is proposed as a novel strategy for manufacturing free-standing, flexible, high-performance hard carbon anodes for sodium ion batteries (NIBs). Compared with the conventional electrodes fabricated with insulating, fluorine-containing polymer binder (PVDF), the unique two-dimensional structure enable rGO can act as a strong binder and flexible backbone, resulting in free-standing, flexible hard carbon film, which can be directly used as anode for sodium ion batteries without any current collector. What's more, rGO also acts as active material, providing Na-storage capacity, as well as conductive addition to construct 3D conductive network, improving the rate performance of hard carbon. The obtained rGO-bonded hard carbon film with excellent flexibility can deliver a high reversible electrode capacity up to 372.4 mA h g?1. After 200 charging/discharging cycles, the capacity loss is only 9%. The good electrochemical performance and excellent flexibility, combined with its facile fabrication approach make it to be a promising electrode candidate for developing next-generation flexible and environmentally friendly energy storage devices.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.