A Hybrid Assembly of MXene with NH2-Si Nanoparticles Boosting Lithium Storage Performance

被引：18

作者：

Cui, Yu ^{[1
]}

Wang, Jie ^{[1
]}

Wang, Xin ^{[1
]}

Qin, Jinwen ^{[1
]}

Cao, Minhua ^{[1
]}

机构：

[1] Beijing Inst Technol, Minist Educ China, Key Lab Cluster Sci, Sch Chem & Chem Engn, Beijing 100081, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2020年 / 15卷 / 08期

基金：

中国国家自然科学基金;

关键词：

MXene; silicon; self-assembly; lithium-ion batteries; CARBIDE MXENE; ION; SILICON; TI3C2; GRAPHENE; ANODES; NANOSHEETS; CAPACITY; DESIGN; SI;

D O I：

10.1002/asia.202000017

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A facile hybrid assembly between Ti3C2Tx MXene nanosheets and (3-aminopropyl) triethoxylsilane-modified Si nanoparticles (NH2-Si NPs) was developed to construct multilayer stacking of Ti3C2Tx nanosheets with NH2-Si NPs assembling together (NH2-Si/Ti3C2Tx). NH2-Si/Ti3C2Tx exhibits a significantly enhanced lithium storage performance compared to pristine Si, which is attributed to the robust crosslinking architecture and considerably improved electrical conductivity as well as shorter Li+ diffusion pathways. The optimized NH2-Si/Ti3C2Tx anode with Ti3C2Tx: NH2-Si mass ratio of 4 : 1 displays an enhanced capacity (864 mAh g(-1) at 0.1 C) with robust capacity retention, which is significantly higher than those of NH2-Si NPs and Ti3C2Tx anodes. Furthermore, this work demonstrates the important effect of the MXene-based electrode architecture on the electrochemical performance and can guide future work on designing high-performance Si/MXene hybrids for energy storage applications.

引用

页码：1376 / 1383

页数：8

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