Hybrid network CuS monolith cathode materials synthesized via facile in situ melt-diffusion for Li-ion batteries

A hybrid network CuS monolith cathode, consisting of the microporous network formed by CuS sheets and particles on three-dimensional macroporous monolith Cu foam, is synthesized by a facile in situ melt-diffusion strategy without binder for Li-ion batteries. The cathode shows an abnormal capacity of 185.1 and 468.3 mAh g(-1) CuS for the first and 100th cycle at a current rate of 0.2 C(1 C = 560 mA g(-1)), respectively. And it could recover 83.9% of the capacity after cycled at various current rates, demonstrating an excellent rate capability which outperforms many other currently available CuS cathodes. Crown Copyright (C) 2014 Published by Elsevier B.V.All rights reserved.