Effect of capping agents in tin nanoparticles on electrochemical cycling
Cited 20 times inCited 20 times in
- Effect of capping agents in tin nanoparticles on electrochemical cycling
- Kwon, Yoojung; Kim, Min Gyu; Kim, Yoojin; Lee, Youngil; Cho, Jaephil
- Agglomeration; Chemical bonds; Electrodes; Fourier transforms; Nitrogen; Organic compounds; Tin compounds; X ray analysis
- Issue Date
- ELECTROCHEMICAL SOC INC
- ELECTROCHEMICAL AND SOLID STATE LETTERS, v.9, no.1, pp.A34 - A38
- Tin particles that were prepared using three different capping agents, hydrobenzamide, citrate, and polyvinyl pyrrolidone (PVP) exhibited different particle sizes. The hydrobenzamide-capped Sn had the smallest particle size (∼50 nm) and uniform distribution while the citrate and PVP-capped Sn had particle sizes of ∼100 and ∼300 nm, respectively, with severe particle aggregation. However, there was no SnO2 or SnO detected on the particle surfaces. The cycling results using coin-type half cells confirmed that the hydrobenzamide-capped Sn had the highest charge capacity of 994 mAh/g between 1.5 and 0 V and the best capacity retention. In contrast, the citrate and PVP-capped Sn showed severe capacity decay. Further analysis using cycled electrodes showed that the hydrobenzamide-capped Sn showed the least particle agglomeration and growth, compared with the others. From Fourier transform magnitude (FT) of Sn LIII-edge energy dispersive X-ray analysis spectra, these facts could be supported by the strong coordination formed as a result of chemical bonding between the nitrogen of the hydrobenzamide capping agent effectively inhibiting the particle growth during cycling.
- ; Go to Link
Appears in Collections:
- ECHE_Journal Papers
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.