What question did this study set out to answer?

To investigate the effect of nickel-catalyzed carbon nanotubes (CNTs) on the cycle performance of silicon anodes.

May 16, 2026RSC Advances0 citationsOpen Access

Nickel-catalyzed CNTs enhancing cycle performance of Si@C anodes

ZWZao WangShanghai University of Engineering Science SLS LiuBeijing Institute of Technology MLMing LiXi’an University

Key Points

To investigate the effect of nickel-catalyzed carbon nanotubes (CNTs) on the cycle performance of silicon anodes.
Nickel-catalyzed CNT growth was induced to create a three-dimensional conductive network.
A dense carbon coating was applied to form micro/nano core-shell structures to enhance mechanical stability.
Mechanical stress and volume expansion were measured during cycling.
The incorporated CNTs significantly reduced volume expansion of silicon anodes during cycling.
Core-shell structures effectively dissipated mechanical stress, enhancing cycle stability.

Abstract

Nickel induces directional CNT growth to build a 3D conductive network. Combined with outer dense carbon coating, they form micro/nano core–shell structures that dissipate mechanical stress and suppress silicon anode volume expansion upon cycling.

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