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Excellent Performance of Few‐Layer Borocarbonitrides as Anode Materials in Lithium‐Ion Batteries
Author(s) -
Sen Sudeshna,
Moses Kota,
Bhattacharyya Aninda J.,
Rao C. N. R.
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201301037
Subject(s) - electrolyte , anode , electrochemistry , lithium (medication) , materials science , graphene , current density , chemical engineering , specific surface area , ion , analytical chemistry (journal) , nanotechnology , chemistry , electrode , chromatography , organic chemistry , quantum mechanics , engineering , endocrinology , catalysis , medicine , physics
Borocarbonitrides (B x C y N z ) with a graphene‐like structure exhibit a remarkable high lithium cyclability and current rate capability. The electrochemical performance of the B x C y N z 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 0.15 C 0.73 N 0.12 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 ). B 0.15 C 0.73 N 0.12 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 B x C y N z and electrolyte also plays a crucial role in the performance of the B x C y N z .