One‐dimensional bunched Ni‐V2O3@C@CNT for superior performance lithium‐ion batteries and hybrid capacitors. Issue 10 (5th May 2021)

• Record Type: Journal Article
• Authors: Bai, Youcun
• Is Part Of: Nano select. Volume 2:Issue 10(2021)
• Page Start: 1941
• Page End: 1953
• Publication Date: 2021-05-05
• Subjects: CNT -- Energy densities -- Li‐ion capacitors -- Ni‐V2O3 -- Sandwich‐like; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.5
• DOI: 10.1002/nano.202000208
• Languages: English
• ISSNs: 2688-4011

Abstract

Abstract: In this paper, by using the bamboo‐like carbon nanotubes (BCNTs) from sulfonated polymer nanotubes (SPNTs), the 3D porous sugar‐coated haws stick‐like composites decorated with V2 O3 and Ni nanoparticles (NV@C@CNT) have been prepared via a facile solution method and subsequent annealing reactions. The porous carbon matrix derived from the SPNTs provides a continuous highly conductive network to facilitate the fast charge transfer and form a stable solid electrolyte interface film. This engineering protocol toward electrode architectures/configurations endows integrated NV@C@CNT anodes with large specific capacity (895.6 mAh g –1 at 0.2 A g –1 after 100 cycles), good operation stability, excellent rate capabilities, and prolonged cyclic life span. To prove their potential real applications, we have established the NV@C@CNT//FCNT lithium ion capacitors (LICs), which is capable of showing high energy densities, power densities, and long cycle stability. This work provides a scalable, simple, and efficient evolutionary method for the production of NV@C@CNT electrode materials, providing useful inspiration and guidance for the anodic applications of metal oxides in next‐generation power sources. Abstract : We have developed a new type of LIC with NV@C@CNT as anode and FCNT as the cathode. The obtained NV@C@CNT anode with favorable architectures yielded excellent lithium storage property and the hybrid NV@C@CNT//FCNT device exhibited superior electrochemical properties in terms of a maximum energy density of 144.8 Wh kg –1 and a maximum power density of 10015.7 W kg –1 .