Abstract
We report that established simple lithium (Li) ion battery cycles can be used to produce nanopores inside various useful one-dimensional (1D) nanostructures such as zinc oxide, silicon, and silver nanowires. Moreover, porosities of these 1D nanomaterials can be controlled in a stepwise manner by the number of Li-battery cycles. Subsequent pore characterization at the end of each cycle allows us to obtain detailed snapshots of the distinct pore evolution properties in each material due to their different atomic diffusion rates and types of chemical bonds. Also, this stepwise characterization led us to the first observation of pore size increases during cycling, which can be interpreted as a similar phenomenon to Ostwald ripening in analogous nanoparticle cases. Finally, we take advantage of the unique combination of nanoporosity and 1D materials and demonstrate nanoporous silicon nanowires (poSiNWs) as excellent supercapacitor (SC) electrodes in high power operations compared to existing devices with activated carbon.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1409-1413 |
| Number of pages | 5 |
| Journal | Nano Letters |
| Volume | 10 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 14 2010 |
| Externally published | Yes |
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Keywords
- Nanopore
- Nanowire
- Supercapacitor
ASJC Scopus subject areas
- Condensed Matter Physics
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Mechanical Engineering
Cite this
Stepwise nanopore evolution in one-dimensional nanostructures. / Choi, Jang Wook; McDonough, James; Jeong, Sangmoo; Yoo, Jee Soo; Chan, Candace; Cui, Yi.
In: Nano Letters, Vol. 10, No. 4, 14.04.2010, p. 1409-1413.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Stepwise nanopore evolution in one-dimensional nanostructures
AU - Choi, Jang Wook
AU - McDonough, James
AU - Jeong, Sangmoo
AU - Yoo, Jee Soo
AU - Chan, Candace
AU - Cui, Yi
PY - 2010/4/14
Y1 - 2010/4/14
N2 - We report that established simple lithium (Li) ion battery cycles can be used to produce nanopores inside various useful one-dimensional (1D) nanostructures such as zinc oxide, silicon, and silver nanowires. Moreover, porosities of these 1D nanomaterials can be controlled in a stepwise manner by the number of Li-battery cycles. Subsequent pore characterization at the end of each cycle allows us to obtain detailed snapshots of the distinct pore evolution properties in each material due to their different atomic diffusion rates and types of chemical bonds. Also, this stepwise characterization led us to the first observation of pore size increases during cycling, which can be interpreted as a similar phenomenon to Ostwald ripening in analogous nanoparticle cases. Finally, we take advantage of the unique combination of nanoporosity and 1D materials and demonstrate nanoporous silicon nanowires (poSiNWs) as excellent supercapacitor (SC) electrodes in high power operations compared to existing devices with activated carbon.
AB - We report that established simple lithium (Li) ion battery cycles can be used to produce nanopores inside various useful one-dimensional (1D) nanostructures such as zinc oxide, silicon, and silver nanowires. Moreover, porosities of these 1D nanomaterials can be controlled in a stepwise manner by the number of Li-battery cycles. Subsequent pore characterization at the end of each cycle allows us to obtain detailed snapshots of the distinct pore evolution properties in each material due to their different atomic diffusion rates and types of chemical bonds. Also, this stepwise characterization led us to the first observation of pore size increases during cycling, which can be interpreted as a similar phenomenon to Ostwald ripening in analogous nanoparticle cases. Finally, we take advantage of the unique combination of nanoporosity and 1D materials and demonstrate nanoporous silicon nanowires (poSiNWs) as excellent supercapacitor (SC) electrodes in high power operations compared to existing devices with activated carbon.
KW - Nanopore
KW - Nanowire
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=77951080098&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951080098&partnerID=8YFLogxK
U2 - 10.1021/nl100258p
DO - 10.1021/nl100258p
M3 - Article
VL - 10
SP - 1409
EP - 1413
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 4
ER -