TY - JOUR
T1 - Templated fabrication of nanostructured NI brush for hydrogen evolution reaction
AU - Lin, Sheng Chleh
AU - Chin, Yn Fan
AU - Wu, Pu-Wei
AU - Hsieh, Yi Fan
AU - Wu, Cheng Yeou
PY - 2010/10/1
Y1 - 2010/10/1
N2 - We fabricated a nanostructured brush by carrying out Ni deposition on a through-channel anodic aluminum oxide (AAO) template, followed by removal of the AAO skeleton. The AAO was prepared by a two-step aiiodizationprocess resulting In pore diameter and thickness of 350 nm and 40 μm, respectively. Subsequently, the AAO underwent an clcctroless deposition involving sensitization, activation, and Ni plating, in conjunction with polyethylene glycol used as the inhibitor to prevent premature closing of pore opening. After deliberate control in relevant parameters, we obtained a conformal Ni overcoat along every pore channel leading to a reduced average pore diameter of 78 nm. Afterward, the sample was immersed in a KOH solution to remove the AAO structure, forming freestanding Ni tubules in a brush configuration. The nanostructured brush revealed considerable enhancement for hydrogen evolution reaction in both current-potential polarization and galvanostatic measurements, which were attributed to the Increment in apparent surface area.
AB - We fabricated a nanostructured brush by carrying out Ni deposition on a through-channel anodic aluminum oxide (AAO) template, followed by removal of the AAO skeleton. The AAO was prepared by a two-step aiiodizationprocess resulting In pore diameter and thickness of 350 nm and 40 μm, respectively. Subsequently, the AAO underwent an clcctroless deposition involving sensitization, activation, and Ni plating, in conjunction with polyethylene glycol used as the inhibitor to prevent premature closing of pore opening. After deliberate control in relevant parameters, we obtained a conformal Ni overcoat along every pore channel leading to a reduced average pore diameter of 78 nm. Afterward, the sample was immersed in a KOH solution to remove the AAO structure, forming freestanding Ni tubules in a brush configuration. The nanostructured brush revealed considerable enhancement for hydrogen evolution reaction in both current-potential polarization and galvanostatic measurements, which were attributed to the Increment in apparent surface area.
UR - http://www.scopus.com/inward/record.url?scp=77958108584&partnerID=8YFLogxK
U2 - 10.1557/jmr.2010.0248
DO - 10.1557/jmr.2010.0248
M3 - Article
AN - SCOPUS:77958108584
VL - 25
SP - 2001
EP - 2007
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 10
ER -