Issue 32, 2020, Issue in Progress

Hierarchical porous LiNi1/3Co1/3Mn1/3O2 with yolk–shell-like architecture as stable cathode material for lithium-ion batteries

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.

Graphical abstract: Hierarchical porous LiNi1/3Co1/3Mn1/3O2 with yolk–shell-like architecture as stable cathode material for lithium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
03 Apr 2020
Accepted
26 Apr 2020
First published
18 May 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 18776-18783

Hierarchical porous LiNi1/3Co1/3Mn1/3O2 with yolk–shell-like architecture as stable cathode material for lithium-ion batteries

Z. Chen, D. Chao, M. Chen and Z. Shen, RSC Adv., 2020, 10, 18776 DOI: 10.1039/D0RA03022H

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