Islam, Mobinul Jeong, Min-Gi Hwang, Jang-Yeon Oh, In-Hwan Sun, Yang-Kook Jung, Hun-Gi 2024-01-20T00:00:25Z 2024-01-20T00:00:25Z 2021-09-03 2017-12-20 0013-4686 https://pubs.kist.re.kr/handle/201004/121908 Exploring new anode materials with promising electrochemical capacity is essential for rechargeable sodium-ion batteries. The selection and structural design of electrode materials play key role in the development of a viable battery with high specific capacity and cycle retention. Herein, self-assembled NiCo2O4 microspheres comprised of numerous sub-micron sized rods are prepared for the first time by a simple co-precipitation method. The synthesized microspheres have homogeneous morphology and a multimodal porosity. The resulting sodium ion storage properties demonstrate that the NiCo2O4 microsphere anode offers excellent electrochemical performance, with a high reversible capacity of 620 mAh g(-1) at a current density of 0.05 A g(-1). It also shows an exceptionally high rate capability up to 10 A g(-1) equivalent to 11 C-rate, which can be attributed to the existence of capacitive behavior. Notably, the rate performance and cycling stability are significantly higher than most previously reported results of NiCo2O4 nanostructures for sodium-ion batteries (SIBs). (c) 2017 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD CAPACITY ANODE MATERIALS TRANSITION-METAL OXIDE LITHIUM-ION STORAGE BEHAVIOR NANOWIRE ARRAYS NICO2O4 NA CO3O4 LI COMPOSITES Self-assembled nickel-cobalt oxide microspheres from rods with enhanced electrochemical performance for sodium ion battery Article 10.1016/j.electacta.2017.10.114 1 ELECTROCHIMICA ACTA, v.258, pp.220 - 227 ELECTROCHIMICA ACTA 258 220 227 scie scopus 000418324800025 2-s2.0-85032655162 Electrochemistry Electrochemistry Article CAPACITY ANODE MATERIALS TRANSITION-METAL OXIDE LITHIUM-ION STORAGE BEHAVIOR NANOWIRE ARRAYS NICO2O4 NA CO3O4 LI COMPOSITES NiCo2O4 Anode materials Sodium ion battery Conversion materials Microspheres