Abstract
The electrochemical kinetics and output capacity of active electrode materials are significantly influenced by their surface structure. Herein, the template-free morphological evolution of CuCo2O4 is reported, which is achieved by controlling the nucleation and growth rate during the hydrothermal process and evaluating its anode performance. The charge-transfer resistance and specific surface area of the fabricated CuCo2O4 anode films are influenced by the viscosity of the solvent used. The optimized mesoporous nanosheet anode exhibits a high specific discharge capacity (1547 mAh g–1) at 0.1 A g–1 and an excellent restoring capability (≈91%); it retains 88% of the initial capacity with a coulombic efficiency of ≈99% even after 250 discharge–charge cycles. The superior lithium-ion energy storage performance of this anode is due to its electrochemically favorable porous 2D morphology with large Brunauer–Emmett–Teller (BET) specific surface area and pore volume, resulting in enhanced Li+ storage and intercalation property.
Original language | English |
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Article number | 1900295 |
Journal | Energy Technology |
Volume | 7 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2019 |
Keywords
- CuCoO
- hydrothermal growth
- Li-ion batteries
- morphology engineering
- power law analysis