Systematic Investigation of the Alucone-Coating Enhancement on Silicon Anodes

Chunmei Ban, Yikai Wang, Jiagang Xu, Markus Groner, Adam Stokes, Yongan Yang, Yang-Tse Cheng, Seoung-Bum Son, Xuemin Li

Research output: Contribution to journalArticlepeer-review

21 Scopus Citations


Polyvinylidene fluoride (PVDF) is the most popular binder in commercial lithium-ion batteries but is incompatible with a silicon (Si) anode because it fails to maintain the mechanical integrity of the Si electrode upon cycling. Herein, an alucone coating synthesized by molecular layer deposition has been applied on the laminated electrode fabricated with PVDF to systematically study the sole impact of the surface modification on the electrochemical and mechanical properties of the Si electrode, without the interference of other functional polymer binders. The enhanced mechanical properties of the coated electrodes, confirmed by mechanical characterization, can help accommodate the repeated volume fluctuations, preserve the electrode structure during electrochemical reactions, and thereby, leading to a remarkable improvement of the electrochemical performance. Owing to the alucone coating, the Si electrodes achieve highly reversible cycling performance with a specific capacity of 1490 mA h g-1 (0.90 mA h cm-2) as compared to 550 mA h g-1 (0.19 mA h cm-2) observed in the uncoated Si electrode. This research elucidates the important role of surface modification in stabilizing the cycling performance and enabling a high level of material utilization at high mass loading. It also provides insights for the future development of Si anodes.
Original languageAmerican English
Pages (from-to)40143-40150
Number of pages8
JournalACS Applied Materials and Interfaces
Issue number46
StatePublished - 2017

NREL Publication Number

  • NREL/JA-5900-68672


  • energy storage
  • lithium-ion batteries
  • molecular layer deposition
  • polyvinylidene fluoride binder
  • silicon-based anodes


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