The electrochemical performance of super P carbon black in reversible Li/Na ion uptake

Bo Peng, Yaolin Xu, Xiaoqun Wang, Xinghua Shi, Fokko M. Mulder

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)
204 Downloads (Pure)

Abstract

Super P carbon black (SPCB) has been widely used as a conducting additive in Li/Na ion batteries to improve the electronic conductivity. However, there has not yet been a comprehensive study on its structure and electrochemical properties for Li/Na ion uptake, though it is important to characterize its contribution in any study of active materials that uses this additive in non-negligible amounts. In this article the structure of SPCB has been characterized and a comprehensive study on the electrochemical Li/Na ion uptake capability and reaction mechanisms are reported. SPCB exhibits a considerable lithiation capacity (up to 310 mAh g–1) from the Li ion intercalation in the graphite structure. Sodiation in SPCB undergoes two stages: Na ion intercalation into the layers between the graphene sheets and the Na plating in the pores between the nano-graphitic domains, and a sodiation capacity up to 145 mAh g–1 has been achieved. Moreover, the influence of the type and content of binders on the lithiation and sodiation properties has been investigated. The cycling stability is much enhanced with sodium carboxymethyl cellulose (NaCMC) binder in the electrode and fluoroethylene carbonate (FEC) in the electrolyte; and a higher content of binder improves the Coulombic efficiency during dis-/charge.

Original languageEnglish
Article number064611
Pages (from-to)1-8
Number of pages8
JournalScience China: Physics, Mechanics and Astronomy
Volume60
Issue number6
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Li ion batteries
  • Na ion batteries
  • super P carbon black

Fingerprint

Dive into the research topics of 'The electrochemical performance of super P carbon black in reversible Li/Na ion uptake'. Together they form a unique fingerprint.

Cite this