T-Nb2O5 nanoparticle enabled pseudocapacitance with fast Li-ion intercalation. Issue 29 (16th July 2018)

• Record Type: Journal Article
• Authors: Kong, Lingping; Liu, Xiaoteng; Wei, Jinjia; Wang, Steven; Xu, Ben Bin; Long, Donghui; Chen, Fei
• Is Part Of: Nanoscale. Volume 10:Issue 29(2018)
• Page Start: 14165
• Page End: 14170
• Publication Date: 2018-07-16
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr03495h
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Orthorhombic Nb2 O5 ( T -Nb2 O5 ) nanocrystallites are successfully fabricated through an evaporation induced self-assembly (EISA) method guided by a commercialised triblock copolymer – Pluronic F127. Abstract : Orthorhombic Nb2 O5 ( T -Nb2 O5 ) nanocrystallites are successfully fabricated through an evaporation induced self-assembly (EISA) method guided by a commercialised triblock copolymer – Pluronic F127. We demonstrate a morphology transition of T -Nb2 O5 from continuous porous nanofilms to monodisperse nanoparticles by changing the content of Pluronic F127. The electrochemical results show that the optimized monodisperse Nb-2 with a particle size of 20 nm achieves premier Li-ion intercalation kinetics and higher rate capability than mesoporous T -Nb2 O5 nanofilms. Nb-2 presents an initial intercalation capacity of 528 and 451 C g −1 at current densities of 0.5 and 5 A g −1 and exhibited a stable capacity of 499 C g −1 after 300 charge/discharge cycles and 380 C g −1 after 1000 cycles, respectively. We would expect this copolymer guided monodispersion of T -Nb2 O5 nanoparticles with high Li + intercalation performance to open up a new window for novel EES technologies.