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Title: High-rate and long-life lithium-ion battery performance of hierarchically hollow-structured NiCo 2O 4/CNT nanocomposite

In this paper, 3D-transition binary metal oxides have been considered as promising anode materials for lithium-ion batteries with improved reversible capacity, structural stability and electronic conductivity compared with single metal oxides. Here, carbon nanotube supported NiCo 2O 4 nanoparticles (NiCo 2O 4/CNT) with 3D hierarchical hollow structure are fabricated via a simple one-pot method. The NiCo 2O 4 nanoparticles with interconnected pores are consists of small nanocrystals. When used as anode material for the lithium-ion battery, NiCo 2O 4/CNT exhibits enhanced electrochemical performance than that of Co 3O 4/CNT and NiO/CNT. Moreover, ultra-high discharge/charge stability was obtained for 4000 cycles at a current density of 5 A g –1. The superior battery performance of NiCo 2O 4 nanoparticles is probably attributed to the special structural features and physical characteristics, including integrity, hollow structure with interconnected pores, which providing sufficient accommodation for the volume change during charge/discharge process. Besides, the consisting of ultra-small crystals enhanced the utility of active material, and intimate interaction with CNTs improved the electron-transfer rate.
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [3] ;  [1]
  1. Huazhong Univ. of Science and Technology, Wuhan (People's Republic of China)
  2. Tianjin Univ., Tianjin (People's Republic of China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0013-4686; R&D Project: 16060; 16060; KC0403020
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Electrochimica Acta
Additional Journal Information:
Journal Volume: 244; Journal Issue: C; Journal ID: ISSN 0013-4686
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
36 MATERIALS SCIENCE; Center for Functional Nanomaterials; NiCo2O4 nanoparticles; Hierarchical hollow structure; interconnected pores; lithium storage; long-life stability
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1416047