Electrochemical Activity of Dendrimer-Stabilized Tin Nanoparticles for Lithium Alloying Reactions

被引：11

作者：

Bhandari, Rohit ^{[1
,2
]}

Anderson, Rachel M. ^{[1
]}

Stauffer, Shannon ^{[1
,3
]}

Dylla, Anthony G. ^{[1
,2
]}

Henkeman, Graeme ^{[1
,3
]}

Stevenson, Keith J. ^{[1
,2
]}

Crooks, Richard M. ^{[1
,2
]}

机构：

[1] Univ Texas Austin, Dept Chem, Austin, TX 78712 USA

[2] Univ Texas Austin, Ctr Nano & Mol Sci & Technol, Austin, TX 78712 USA

[3] Univ Texas Austin, Inst Computat & Engn Sci, Austin, TX 78712 USA

来源：

LANGMUIR | 2015年 / 31卷 / 23期

关键词：

ANODE MATERIAL; GERMANIUM NANOPARTICLES; CARBON NANOFIBERS; ION BATTERIES; SN; NANOCRYSTALS; SILICON; ELECTRODES; LITHIATION; STORAGE;

D O I：

10.1021/acs.langmuir.5b01383

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis and characterization of Sn nanoparticles in organic solvents using sixth-generation dendrimers modified on their periphery with hydrophobic groups as stabilizers are repotted. Sn2+:dendrimer ratios of 147 and 225 were employed for the synthesis, corresponding to formation Of Sn-147 and Sn-225 dendritner-Stabilized nanoparticles (DSNs). Transmission electron microscopy analysis indicated the presence of Ultrasmall Sn nanoparticles having an average size of 3.0-5.0 rim. X-ray absorption spectroscopy suggested the presence of Sn nanoparticles with only partially oxidized surfaces. Cyclic voltammetry studies of the So DSNs for Li alloying/dealloying reactions demonstrated good reversibility. Control experiments carried out in the absence of DSNs clearly indicated that these ultrasmall Sn DSNs react directly with Li to form SnLi alloys.

引用

页码：6570 / 6576

页数：7

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