@article{9276ca4efc6d4b71b855f3d5068e0b34,
title = "Liquid exfoliation graphene sheets as catalysts for hybrid sodium-air cells",
abstract = "Graphene sheets are prepared by subjecting pyrolytic graphite in acetone to liquid exfoliation with sonication. Pyrolytic graphite is synthesized via arc discharge method. Five-layered graphene sheets are obtained through sonication for 12 h. The synthesized graphene sheets are then used as catalysts for hybrid sodium-air cells. The electrocatalytic activity of the exfoliated graphene sheets toward oxygen reduction reaction (ORR) is higher than that of pyrolytic graphite because of numerous edges and efficient electron communication between active edge sites and electrode substrate in the former. The discharge voltage is held constant at 2.48 V versus Na/Na+ for the exfoliated graphene sheets as the catalyst at a current density of 1 mA cm−2 and room temperature.",
author = "Feng Liang and Takayuki Watanabe and Katsuro Hayashi and Yaochun Yao and Wenhui Ma and {Bin Yang}, Yang and Yongnian Dai",
note = "Funding Information: A part of this study is supported by a Grant-in-Aid for Scientific Research (KAKENHI No. 26289235 ) from the Japan Society for the Promotion of Science, and the Elements Strategy Initiative to Form Core Research Center, MEXT, Japan. We also thank High-level Scientific Research Foundation for the Introduction of Talents in Kunming University of Science and Technology ( KKSY201552014 ), the Scientific Research Foundation of Yunnan Provincial Education Department ( 2015Y057 ), the Applied Basic Research Program ( 201501CE00061 ), Academician's Discovering Found ( 2015HA016 , 2016HA011 ) from Yunnan Provincial Science and Technology Department . ",
year = "2017",
month = jan,
day = "15",
doi = "10.1016/j.matlet.2016.10.054",
language = "English",
volume = "187",
pages = "32--35",
journal = "Materials Letters",
issn = "0167-577X",
publisher = "Elsevier",
}