AI Article Synopsis
- * Researchers successfully synthesized uniform caterpillar-like 1D NiCO nanosheet arrays using a simple hydrothermal method, which are evaluated for their effectiveness as LIB anodes.
- * The unique structure of these nanosheets leads to lower activation energy and accelerated lithium-ion diffusion, achieving a high capacity of 893 mA h/g after 150 cycles and good rate performance, surpassing many other transition metal carbonates; lithium storage mechanisms were assessed through various analytical techniques.
Article Abstract
Transition metal carbonates have shown great potential as anode materials for next-generation lithium-ion batteries (LIBs), due to their super-high capacity. However, pure-phase NiCO with high electrochemical activity has not been reported to date. Herein, highly uniform caterpillar-like one-dimensional (1D) NiCO nanosheet arrays have been successfully synthesized using a facile hydrothermal route and have been evaluated as an anode material for LIBs. Profiting from the unique 1D hierarchical structure and spaces between the neighboring nanosheets, the as-prepared NiCO requires lower activation energy and delivers quick lithium-ion diffusion kinetics. These attributes result in a high capacity of 893 mA h g after 150 cycles and excellent rate performance, superior to those of most reported transition metal carbonates. Cyclic voltammetry, X-ray diffraction and X-ray photoelectron spectroscopy reveal the lithium storage mechanism.
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| http://dx.doi.org/10.1039/d2dt00091a | DOI Listing |
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