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Tailored Synthesis of Coral‐Like CoTiO 3 /Co 3 O 4 /TiO 2 Nanobelts with Superior Lithium Storage Capability
Author(s) -
Liu Hao,
Wu Xiaona,
Guo Enyan,
Lu Qifang
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201900774
Subject(s) - materials science , lithium (medication) , nanoparticle , calcination , nanotechnology , electrolyte , electrospinning , chemical engineering , specific surface area , anode , electrochemistry , electrode , cathode , lithium ion battery , nanowire , ion , battery (electricity) , catalysis , composite material , chemistry , medicine , biochemistry , polymer , power (physics) , physics , organic chemistry , quantum mechanics , endocrinology , engineering
A facile yet efficient two‐step electrospinning calcination strategy is smartly developed to construct 1D hierarchical coral‐like CoTiO 3 /Co 3 O 4 /TiO 2 hybrid nanobelts. The 1D coral‐like nanohybrid is homogeneously constructed from well‐dispersed CoTiO 3 nanobelts and uniformly distributed secondary crystalline Co 3 O 4 /TiO 2 nanoparticle building blocks. When evaluated as anodes for lithium‐ion batteries (LIBs), the hybrid CoTiO 3 /Co 3 O 4 /TiO 2 nanobelt electrode exhibits a promising reversible capacity of 722.3 mAh g −1 at 100 mA g −1 after 250 cycles and has excellent cyclability with a capacity of 256.7 mAh g −1 after 1000 cycles at a current density of 2000 mA g −1 . The imitating 1D coral‐like structural pattern is beneficial to alleviate the nanoparticle agglomeration and increase the contact area with the electrolyte, leading to the short diffusion path and facilitating the rapid transfer of lithium ions. The high‐level secondary nanobuilding blocks offer a large specific surface area, high surface‐to‐bulk ratio, and fast interfacial ion transport. Herein, it strongly sheds light on the elegant design concept of the hybrid for fabricating next‐generation advanced rechargeable LIBs.