Journal Home > Volume 11 , issue 7

Rechargeable metal-iodine batteries are an emerging attractive electrochemical energy storage technology that combines metallic anodes with halogen cathodes. Such batteries using aqueous electrolytes represent a viable solution for the safety and cost issues associated with organic electrolytes. A hybrid-electrolyte battery architecture has been adopted in a lithium-iodine battery using a solid ceramic membrane that protects the metallic anode from contacting the aqueous electrolyte. Here we demonstrate an eco-friendly, low-cost zinc-iodine battery with an aqueous electrolyte, wherein active I2 is confined in a nanoporous carbon cloth substrate. The electrochemical reaction is confined in the nanopores as a single conversion reaction, thus avoiding the production of I3- intermediates. The cathode architecture fully utilizes the active I2, showing a capacity of 255 mAh·g-1 and low capacity cycling fading. The battery provides an energy density of ~ 151 Wh·kg-1 and exhibits an ultrastable cycle life of more than 1, 500 cycles.

File
12274_2017_1920_MOESM1_ESM.pdf (1.8 MB)
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 20 September 2017
Revised: 01 November 2017
Accepted: 11 November 2017
Published: 02 August 2018
Issue date: July 2018

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2017

Acknowledgements

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Nos. 21171128 and 21603162), Tianjin Sci. & Tech. Program (No. 17JCYBJC21500), and the Fundamental Research Funds of Tianjin University of Technology.

Rights and permissions

Reprints and Permission requests may be sought directly from editorial office.
Email: nanores@tup.tsinghua.edu.cn

Return