Hierarchical porous LiNi1/3Co1/3Mn1/3O2 with yolk-shell-like architecture as stable cathode material for lithium-ion batteries.
RSC Adv
; 10(32): 18776-18783, 2020 May 14.
Article
em En
| MEDLINE
| ID: mdl-35518293
ABSTRACT
The relatively sluggish lithium ion diffusion of LiNi1/3Co1/3Mn1/3O2 (NCM) is one of the fatal factors which can significantly prevent its widespread usage in high-power applications. In this work, the monodispersed hierarchical porous yolk-shell-like LiNi1/3Co1/3Mn1/3O2 (YS-NCM) with exposure to {010} electrochemical active facets was successfully synthesized, aiming to elevate the lithium ion diffusion ability and thus to enhance the electrochemical performance. The hierarchical porous nano-/microsphere morphology as well as the voids between the yolk and the shell allow for shortened Li+ diffusion pathways, leading to improved Li+ diffusion capability. These voids are also beneficial for providing more buffers for the volume changes during repeated charge and discharge. Additionally, the exposure of {010} electrochemical active facets provides more open structure for unimpeded Li+ migration. Therefore, by this design strategy, the lithium ion transport kinetics is greatly improved, yielding superior electrochemical performances. When examined as the cathode material for lithium-ion batteries (LIBs), the YS-NCM-based cells have achieved superior rate capability and stable cycling performance, rendering it as a promising cathode candidate for practical lithium-ion battery applications.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
RSC Adv
Ano de publicação:
2020
Tipo de documento:
Article