TiNb2O7/Graphene hybrid material as high performance anode for lithium-ion batteries. (10th September 2015)

• Record Type: Journal Article
• Authors: Ashish, A.G.; Arunkumar, P.; Babu, Binson; Manikandan, P.; Sarang, Som; Shaijumon, M.M.
• Is Part Of: Electrochimica acta. Volume 176(2015)
• Page Start: 285
• Page End: 292
• Publication Date: 2015-09-10
• Subjects: Nanocomposite material -- Anode material -- Charge-discharge cycling -- High rate capability -- Lithium-ion battery; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.06.122
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: We report the synthesis of TiNb2 O7 /Graphene (TNO-TG) hybrid nanomaterial by simple solvothermal process, with TiNb2 O7 nanoparticles anchored on the reduced graphene oxide (rGO) sheets. TNO-TG hybrid nanomaterial showed excellent electrochemical performance when studied as anode for Lithium-ion battery, with an exceptionally high rate capability (capacity retention of 80% at 16 C rate) along with high discharge capacity (∼230 mAhg −1 after 50 cycles at 0.1 C). A full cell Li-ion battery has been fabricated with TNO-TG as anode and LiNi1/3 Mn1/3 Co1/3 O2 :LiNi0.5 Mn0.5 O2 (wt% of 75:25) as cathode, which delivered an average cell voltage of ∼2.5 V with an initial anode-specific discharge capacity of 211 mAhg −1, when cycled in the voltage range of 1.5–3.5 V at 0.1 C. The obtained results are very promising and we believe the current findings will lead to new directions in the on-going search for safe and high performance anodes for rechargeable lithium-ion batteries.