Details

Autor(en) / Beteiligte

• Ganguly, Dipsikha
• Ramaprabhu, Sundara

Titel

Facile synthesis and electrochemical properties of α-Fe2O3 nanoparticles/etched carbon nanotube composites as anode for lithium-ion batteries

Ist Teil von

• Materials chemistry and physics, 2021-07, Vol.267, p.124664, Article 124664

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2021

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• α-Fe2O3 has gained interest as promising anode material for lithium-ion batteries due to its high theoretical capacity. But, it suffers from low conductivity and high volume change. Herein, we have reported α-Fe2O3 nanoparticles/etched carbon nanotubes (ECNT) composites synthesized via oxidative etching of acid-functionalized CNT. This study shows that incorporating the ECNT matrix can effectively mitigate the disadvantages of low conductivity and capacity fading associated with the α-Fe2O3 anode material. Besides, ECNT provides better accessibility of the electrolyte along with higher active sites for Li+ ion interactions due to open ends, lateral defects, and porous nature. Li+ ion interactions for different composites are also studied here. Excellent rate capability, high capacity, and high stability of anode are achieved due to the synergistic effect of α-Fe2O3 and ECNT network. This study shows an effective design strategy of high-performance α-Fe2O3 based anode for lithium-ion batteries. [Display omitted] •α-Fe2O3 nanoparticles/etched carbon nanotubes (Fe2O3-ECNT) composites synthesized via oxidative etching of f-CNT.•ECNT act as an effective buffer to accommodate the stress caused due to the volume change associated with α-Fe2O3.•Li + ion interactions for different composites are studied.•Synergistic effect of α-Fe2O3 nanoparticles and ECNT help in developing a high performance anode for lithium ion batteries.