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Issue 17, 2017
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Hard carbon anodes of sodium-ion batteries: undervalued rate capability

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Abstract

The rate capability of hard carbon has long been underestimated in prior studies that used carbon/Na two-electrode half-cells. Through a three-electrode cell setup, we discover that it is the overpotential of the sodium counter electrode that drives the half-cells to the lower cutoff potential prematurely during hard carbon sodiation, particularly at high current rates, which prevents the hard carbon anode from being fully sodiated.

Graphical abstract: Hard carbon anodes of sodium-ion batteries: undervalued rate capability

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Article information


Submitted
13 Jan 2017
Accepted
06 Feb 2017
First published
06 Feb 2017

Chem. Commun., 2017,53, 2610-2613
Article type
Communication

Hard carbon anodes of sodium-ion batteries: undervalued rate capability

Z. Li, Z. Jian, X. Wang, I. A. Rodríguez-Pérez, C. Bommier and X. Ji, Chem. Commun., 2017, 53, 2610
DOI: 10.1039/C7CC00301C

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