High capacity and exceptional cycling stability of ternary metal sulfide nanorods as Li ion battery anodes

Abstract

Ternary spinel NiCo<inf>2</inf>S<inf>4</inf> nanorods are tested for the first time as anode electrodes for Li ion batteries. When the electrode is fabricated using the carboxymethyl cellulose-polyacryl amide composite binder, it is found to restrict or suppress the formation of a polymeric gel passivation layer. As a result, the electrode not only delivers excellent specific capacity, but also an outstanding rate and cyclic stability with almost no decay up to 100 charge-discharge cycles. © The Royal Society of Chemistry 2015.