Excellent Performance of Few‐Layer Borocarbonitrides as Anode Materials in Lithium‐Ion Batteries. Issue 1 (21st October 2013)

• Record Type: Journal Article
• Authors: Sen, Sudeshna; Moses, Kota; Bhattacharyya, Aninda J.; Rao, C. N. R.
• Is Part Of: Chemistry, an Asian journal. Volume 9:Issue 1(2014:Jan.)
• Page Start: 100
• Page End: 103
• Publication Date: 2013-10-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201301037
• Languages: English
• ISSNs: 1861-4728

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Borocarbonitrides (B<sub><italic>x</italic></sub>C<sub><italic>y</italic></sub>N<sub><italic>z</italic></sub>) with a graphene‐like structure exhibit a remarkable high lithium cyclability and current rate capability. The electrochemical performance of the B<sub><italic>x</italic></sub>C<sub><italic>y</italic></sub>N<sub><italic>z</italic></sub> 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 B<sub>0.15</sub>C<sub>0.73</sub>N<sub>0.12</sub> 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<sup>−1</sup>). B<sub>0.15</sub>C<sub>0.73</sub>N<sub>0.12</sub> has a very high specific capacity of 710 mA h g<sup>−1</sup> at 0.05 A g<sup>−1</sup>. 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<sup>−1</sup> at 0.05 A g<sup>−1</sup>. It is believed that the solid–electrolyte interphase (SEI) layer at the interface of B<sub><italic>x</italic></sub>C<sub><italic>y</italic></sub>N<sub><italic>z</italic></sub> and electrolyte also plays a crucial role in the performance of the B<sub><italic>x</italic></sub>C<sub><italic>y</italic></sub>N<sub><italic>z</italic></sub> .</p> </abstract>