Hierarchical NiCo2O4 Micro- and Nanostructures with Tunable Morphologies as Anode Materials for Lithium- and Sodium-Ion Batteries

Fang Fu; Jiadong Li; Yuze Yao; Xueping Qin; Yubing Dou; Haiyan Wang; Jenkin Tsui; Kwong-Yu Chan; Minhua Shao

doi:10.1021/acsami.7b02175

Hierarchical NiCo₂O₄ Micro- and Nanostructures with Tunable Morphologies as Anode Materials for Lithium- and Sodium-Ion Batteries

ACS Appl Mater Interfaces. 2017 May 17;9(19):16194-16201. doi: 10.1021/acsami.7b02175. Epub 2017 May 4.

Authors

Fang Fu¹, Jiadong Li¹, Yuze Yao¹, Xueping Qin¹, Yubing Dou¹, Haiyan Wang^{1

2}, Jenkin Tsui³, Kwong-Yu Chan³, Minhua Shao^{1

4}

Affiliations

¹ Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology , Kowloon, Hong Kong, P.R. China.
² College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, P.R. China.
³ Department of Chemistry, University of Hong Kong , Pokfulam Road, Hong Kong, P.R. China.
⁴ Energy Institute, Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong, P.R. China.

PMID: 28452455
DOI: 10.1021/acsami.7b02175

Abstract

NiCo₂O₄ microrods with open structures are successfully synthesized using a solvothermal method. Compared with those of dense microspheres, the one-dimensional (1D) porous microrods show much higher capacities and stability for both Li- and Na-ion batteries due to the 1D open structure facilitating fast ion transport and buffering volumetric change during charge/discharge. This work demonstrates that the electrochemical performance of NiCo₂O₄ is highly dependent on morphologies of the active material.

Keywords: batteries; binary metal oxide; one-dimensional structure; porous hierarchical structure; solvothermal method.