In Situ Wrapping Si Nanoparticles with 2D Carbon Nanosheets as High-Areal-Capacity Anode for Lithium-Ion Batteries.

Published

Journal Article

Silicon (Si) has aroused great interest as the most attractive anode candidate for energy-dense lithium-ion batteries (LIBs) in the past decade because of its significantly high capacity and low discharge potential. However, the large volume change during cycling impedes its practical application, which is more serious in the case of high mass loading. Designing Si anode with high mass loading and high areal capacity by a simple, scalable, and environmentally friendly method is still a big challenge. Herein, we report in situ one-pot synthesis of Si/C composite, where Si nanoparticles are wrapped by graphene-like 2D carbon nanosheets. After 500 cycles at 420 mA g-1, the Si/C anode displays a gravimetric capacity of 881 mAh g-1 with 86.4% capacity being retained. More specially, a high areal capacity of 3.13 mAh cm-2 at 5.00 mg cm-2 after 100 cycles is achieved. This study demonstrates a novel route for the preparation of the Si/C composite with high material utilization and may expand the possibility of future design Si-based anode with high areal capacity for high energy LIBs.

Full Text

Duke Authors

Cited Authors

  • Yan, L; Liu, J; Wang, Q; Sun, M; Jiang, Z; Liang, C; Pan, F; Lin, Z

Published Date

  • November 2017

Published In

Volume / Issue

  • 9 / 44

Start / End Page

  • 38159 - 38164

PubMed ID

  • 29053916

Pubmed Central ID

  • 29053916

Electronic International Standard Serial Number (EISSN)

  • 1944-8252

International Standard Serial Number (ISSN)

  • 1944-8244

Digital Object Identifier (DOI)

  • 10.1021/acsami.7b10873

Language

  • eng