Ni-doped Co3O4 spheres decorated on CNTs nest-like conductive framework as efficiently stable hybrid anode for Na-ion batteries. Issue 19 (1st October 2021)

• Record Type: Journal Article
• Authors: Zawar, Sidra; Ali, Ghulam; Afshan, Nousheen; Atiq, Shahid; Mustafa, G.M.; Hasnain, Hamza; Iftikhar, Faiza Jan
• Is Part Of: Ceramics international. Volume 47:Issue 19(2021)
• Page Start: 27854
• Page End: 27862
• Publication Date: 2021-10-01
• Subjects: Na-ion batteries -- Hybrid anode materials -- Synergistic effect -- Ni-doped Co oxide -- Carbon nanotubes; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.06.214
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The proficient realization of Na-ion batteries (NIBs) having exceptional electrochemical behavior is considered to bridge the hurdles triggered by inadequate resources and costly manufacturing of Li-ion batteries. Herein, we report a facile synthesis of Ni0.06 Co2.94 O4 /CNTs hybrid using the solvothermal route and Ni0.06 Co2.94 O4 using the hydrothermal approach. The formation of a nest-like conductive framework of Ni0.06 Co2.94 O4 /CNT composites, aligning favorably to form an assembly of a layered structure, supports an efficient Na-ion insertion/extraction process. A high initial charge capacity of 621 and 582 mAh g -1 is delivered by Ni0.06 Co2.94 O4 /CNTs and Ni0.06 Co2.94 O4 electrodes, respectively which retained up to 328 and 239 mAh g -1 after 100 cycles. The electrodes also delivered excellent rate performance with 119 and 93 mAh g -1 at 5.0C and retained 77 and 64% of initial capacity, respectively when recovered from 0.05C. Additionally, Ni0.06 Co2.94 O4 /CNTs exhibited low impedance over a wide range of frequencies resulting in more Na ions storage and a faster Na insertion/extraction process. The exceptional performance shown by the hybrid electrode is due to the synergistic influence flanked by binary metal oxides and CNTs. Hence, the hybrid of Ni-doped metal oxide and carbonaceous species emerge as an excellent choice for use as an electrode for electrochemical energy storage devices.