Nonfilling carbon coating of porous silicon micrometer-sized particles for high-performance lithium battery anodes

ACS Nano
Zhenda LuYi Cui

Abstract

Silicon is widely recognized as one of the most promising anode materials for lithium-ion batteries due to its 10 times higher specific capacity than graphite. Unfortunately, the large volume change of Si materials during their lithiation/delithiation process results in severe pulverization, loss of electrical contact, unstable solid-electrolyte interphase (SEI), and eventual capacity fading. Although there has been tremendous progress to overcome these issues through nanoscale materials design, improved volumetric capacity and reduced cost are still needed for practical application. To address these issues, we design a nonfilling carbon-coated porous silicon microparticle (nC-pSiMP). In this structure, porous silicon microparticles (pSiMPs) consist of many interconnected primary silicon nanoparticles; only the outer surface of the pSiMPs was coated with carbon, leaving the interior pore structures unfilled. Nonfilling carbon coating hinders electrolyte penetration into the nC-pSiMPs, minimizes the electrode-electrolyte contact area, and retains the internal pore space for Si expansion. SEI formation is mostly limited to the outside of the microparticles. As a result, the composite structure demonstrates excellent cycling stabi...Continue Reading

References

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Citations

Aug 16, 2016·ChemElectroChem·Minseong KoJaephil Cho
Aug 4, 2016·Scientific Reports·L ZhongL Mangolini
Nov 24, 2016·Angewandte Chemie·Md Mokhlesur RahmanYing Chen
Aug 31, 2016·Scientific Reports·Chenfei ShenChongwu Zhou
May 16, 2017·ACS Applied Materials & Interfaces·Shan FangXiaogang Zhang
Feb 8, 2018·Chemical Society Reviews·Tae-Woo KwonAli Coskun
Sep 22, 2018·Advanced Materials·Jiangyan WangDan Wang
May 6, 2019·Chemistry : a European Journal·Fei WangHongbin Du
Mar 13, 2020·Advanced Materials·Chao LuXi Chen
Mar 11, 2020·Chemistry, an Asian Journal·Fangzhou ZhangJianping Yang
Oct 19, 2017·Scientific Reports·Asbjørn UlvestadMartin Kirkengen
Nov 24, 2018·Frontiers in Chemistry·Rana Zafar Abbas ManjJianping Yang
Oct 22, 2020·IScience·John CollinsDevendra K Sadana
Jun 17, 2021·Chemistry : a European Journal·Shunzhang YouCheng Chao Li

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