首页|Electrode reaction-driven orientation regrowth of Fe2O3 crystals from novel dendritic architecture in anode of lithium-ion batteries
Electrode reaction-driven orientation regrowth of Fe2O3 crystals from novel dendritic architecture in anode of lithium-ion batteries
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NSTL
Elsevier
? 2022 Elsevier B.V.Morphology design is one effective strategy for improving the rate capability and cycling stability of Fe2O3 anode material for lithium-ion batteries. Herein, a kind of dendritic Fe2O3 architecture was prepared through a hydrothermal route in which glycine molecules guide crystal growth and turn into carbon in the final composite. The special coralloid Fe2O3/NC composite integrates the structure advantages of porous and low-dimensional regular electrode materials. The mutually supportive architecture provides more space to exchange ions with electrolyte and accommodate mechanical stress to suppress volume change, and improves better electron conductivity compared to isolated particles. The Fe2O3/NC delivers 837.6 mAh g?1 at 10 A g?1 and maintains 788 mAh g?1 after a long-term life of 1000 cycles. One more discovery is that the dendritic Fe2O3 architecture grows into needle-like crystals driven by electrode reaction revolved to ion migration and crystal regeneration.
Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education School of Material Science and Engineering Guilin University of Technology
Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization College of Materials and Chemical Engineering Hezhou University
Guangxi Key Laboratory of Low-Carbon Energy Materials School of Chemical and Pharmaceutical Science Guangxi Normal University
NSTL
Elsevier
