Excellent performance of few-layer borocarbonitrides as anode materials in lithium-ion batteries

Sen, Sudeshna ; Moses, Kota ; Bhattacharyya, Aninda J. ; Rao, C. N. R. (2013) Excellent performance of few-layer borocarbonitrides as anode materials in lithium-ion batteries Chemistry - An Asian Journal, 9 (1). pp. 100-103. ISSN 1861-4728

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/asia.20...

Related URL: http://dx.doi.org/10.1002/asia.201301037

Abstract

Borocarbonitrides (BxCyNz) with a graphene-like structure exhibit a remarkable high lithium cyclability and current rate capability. The electrochemical performance of the BxCyNz materials, synthesized by using a simple solid-state synthesis route based on urea, was strongly dependent on the composition and surface area. Among the three compositions studied, the carbon-rich compound B0.15C0.73N0.12 with the highest surface area showed an exceptional stability (over 100 cycles) and rate capability over widely varying current density values (0.05−1 A g−1). B0.15C0.73N0.12 has a very high specific capacity of 710 mA h g−1 at 0.05 A g−1. With the inclusion of a suitable additive in the electrolyte, the specific capacity improved drastically, recording an impressive value of nearly 900 mA h g−1 at 0.05 A g−1. It is believed that the solid–electrolyte interphase (SEI) layer at the interface of BxCyNz and electrolyte also plays a crucial role in the performance of the BxCyNz.

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