Template Free and Binderless NiO Nanowire Foam for Li-ion Battery Anodes with Long Cycle Life and Ultrahigh Rate Capability.

ABSTRACT: Herein, NiO-decorated Ni nanowires with diameters ca. 30-150 nm derived from Ni wire backbone (ca. 2 μm in diameter) is directly synthesized on commercially available Ni foam as a renovated anode for Li-ion batteries. Excellent stability with capacity 680 mAh g(-1) at 0.5C (1C = 718 mA g(-1)) is achieved after 1000 cycles. Superior rate capability is exhibited by cycling at extremely high current rates, such as 20C and 50C with capacities ca. 164 and 75 mAh g(-1), respectively. The capacity can be recovered back to ca. 430 mAh g(-1) in 2 cycles when lowered to 0.2C and stably cycled for 430 times with capacity 460 mAh g(-1). The NiO nanowire foam anode possesses low equivalent series resistance ca. 3.5 Ω, resulting in superior power performance and low resistive losses. The NiO nanowire fo

SUBMITTER: Liu C 

PROVIDER: S-EPMC4947918 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature