气候变化领域集成服务门户(CCPortal): Gas phase synthesis of amorphous silicon nitride nanoparticles for high-energy LIBs

CCPortal

DOI	10.1039/c9ee03857d
	Gas phase synthesis of amorphous silicon nitride nanoparticles for high-energy LIBs
	Chae S.; Park S.; Ahn K.; Nam G.; Lee T.; Sung J.; Kim N.; Cho J.
发表日期	2020
ISSN	17545692
起始页码	1212
结束页码	1221
卷号	13 期号:4
英文摘要	Various morphological nanoscale designs have come into the spotlight to address the failure in the mechanism of high-capacity Si anodes, i.e. severe volume expansion (∼300%). However, the nanostructured Si anodes designed still suffer mechanical degradation upon repeated cycling, and eventually become shredded and surrounded by accumulated solid electrolyte interphase (SEI) layers. Here, we introduce a highly homogenous phase design of Si with N by scalable gas phase synthesis, which tackles the intrinsic challenges of Si anodes, i.e. mechanical degradation and slow Li diffusion. Si-rich silicon nitride (SiN) nanoparticles are realized using a specially customized vertical furnace, where Si3N4 acts as not only a strong inactive matrix but also a Li ion conductor after lithiation. Owing to their stubborn and ionic conductive matrix, SiN nanoparticles exhibit superior rate performances and cycling stability while maintaining their dense structure. Accordingly, when combined with commercially viable graphite-blended system for the pouch-type 1 A h cell, SiN nanoparticles demonstrate high rate capability at 5C, as well as contributing much higher capacity than silicon nanoparticles by mitigating electrode swelling during cycling. © The Royal Society of Chemistry.
英文关键词	Anodes; Gases; Lithium; Nanoparticles; Nitrides; Silicon nitride; Solid electrolytes; Swelling; Synthesis (chemical); Cycling stability; Gas-phase synthesis; High rate capability; Mechanical degradation; Si-rich silicon nitrides; Silicon nanoparticles; Solid electrolyte interphase layer (SEI); Vertical furnaces; Amorphous silicon; degradation; electrode; electrolyte; gas phase reaction; graphite; inorganic compound; nanoparticle
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189663
作者单位	School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
推荐引用方式 GB/T 7714	Chae S.,Park S.,Ahn K.,et al. Gas phase synthesis of amorphous silicon nitride nanoparticles for high-energy LIBs[J],2020,13(4).
APA	Chae S..,Park S..,Ahn K..,Nam G..,Lee T..,...&Cho J..(2020).Gas phase synthesis of amorphous silicon nitride nanoparticles for high-energy LIBs.Energy & Environmental Science,13(4).
MLA	Chae S.,et al."Gas phase synthesis of amorphous silicon nitride nanoparticles for high-energy LIBs".Energy & Environmental Science 13.4(2020).