Ultramicroporous Carbon through an Activation-Free Approach for Li-S and Na-S Batteries in Carbonate-Based Electrolyte

Lei Hu; Yue Lu; Tianwen Zhang; Tao Huang; Yongchun Zhu; Yitai Qian

doi:10.1021/acsami.7b01387

Ultramicroporous Carbon through an Activation-Free Approach for Li-S and Na-S Batteries in Carbonate-Based Electrolyte

ACS Appl Mater Interfaces. 2017 Apr 26;9(16):13813-13818. doi: 10.1021/acsami.7b01387. Epub 2017 Apr 11.

Authors

Lei Hu, Yue Lu, Tianwen Zhang, Tao Huang, Yongchun Zhu, Yitai Qian¹

Affiliation

¹ School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China.

PMID: 28388027
DOI: 10.1021/acsami.7b01387

Abstract

We report an activation-free approach for fabricating ultramicroporous carbon as an accommodation of sulfur molecules for Li-S and Na-S batteries applications in carbonate-based electrolyte. Because of the high specific surface area of 967 m² g^-1, as well as 51.8% of the pore volume is contributed by ultramicropore with pore size less than 0.7 nm, sulfur cathode exhibits superior electrochemical behavior in carbonate-based electrolyte with a capacity of 507.9 mA h g^-1 after 500 cycles at 2 C in Li-S batteries and 392 mA h g^-1 after 200 cycles at 1 C in Na-S batteries, respectively.

Keywords: activation-free approach; carbonate-based electrolyte; lithium−sulfur batteries; metal−sulfur batteries; sodium−sulfur batteries; ultramicroporous carbon.