http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Bannov, Alexander G. (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
High-temperature-treated multiwall carbon nanotubes for hydrogen evolution reaction
Nguyen, Tri Khoa,Bannov, Alexander G.,Popov, Maxim V.,Yun, Jong-Won,Nguyen, Anh Duc,Kim, Yong Soo Elsevier 2018 International journal of hydrogen energy Vol.43 No.13
<P><B>Abstract</B></P> <P>We investigated the hydrogen evolution reaction (HER) properties of multi-wall carbon nanotubes (MWCNTs) treated at extremely high temperature (2600 °C). The heat treatment not only improves the crystallinity of the MWCNTs, but also reduces the carbon-oxygen (CO) bonding as it is replaced by the defect-carbon (<I>sp</I> <SUP>3</SUP> and CH) bonding. These modifications in the heat treated MWCNT structure lead to the increase of electrochemical charge transfer. The heat treatment of MWCNTs in the composite with Pt (MWCNT-Pt composite) further facilitates electrocatalysis. The MWCNTs-Pt composite shows strong enhancement in the HER performance with an onset of overpotential of −0.04 V vs reversible hydrogen electrode and a Tafel slope of 10.9 mV/decade. This performance is indeed better than that of Pt, which is the best working material for HER.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Heat treatment effects to reorder nanotube structures by connecting the broken crystals. </LI> <LI> CO bonding density is reduced and porosity properties are increased after heat treatment. </LI> <LI> Hydrogen evolution reaction (HER) performance is enhanced after heat treatment. </LI> <LI> Charge transfer resistance in HER is strongly decreased after heat treatment. </LI> <LI> Heat-treated MWCNT-Pt composite yields the excellent HER properties. </LI> </UL> </P>
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
