Abstract
AbstractMulti‐size Bi2O3 nanoparticles supported by 1‐dimensional (1D) porous carbon microtubes (ms‐Bi2O3/CMTs) were favorably constructed through surface‐ion release and in‐ situ oxidation strategy. The prominent 1D porous microtube materials with multi‐size nanoparticles structure can furnish more plentiful electrochemical active sites and shorten lithium storage paths for high‐speed redox reactions, which was conducive to ion transport kinetics. The CV tests with various scan rates verified lithium storage mechanism of ms‐Bi2O3/CMTs with diffusion/capacitance control coexistence. The complexes illustrated an ultra‐long cycle life and extraordinary reversible capacity: it still had a specific capacity of 392.6 mAh g−1 after 3000 cycles at 1 A g−1; and it manifested 546.3 mAh g−1 when it returned to 0.05 A g−1 and continued to 100 cycles after experiencing different current densities of 0.05–5 A g−1, which indicated that ms‐Bi2O3/CMTs is a prospective anode for lithium‐ion batteries (LIBs).
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