Abstract
Rational design of high-performance electrocatalysts with low cost and large abundance is highly desirable for water splitting technology. Here we report the synthesis of Ni 3 S 2 pyramids coated with crimped graphene (Ni 3 S 2 @G), the unique configuration of which endows Ni 3 S 2 @G with large roughness, creating much more active sites along the edges. Moreover, the coupling of graphene enhances the electrical conductivity of the nanocomposite, and thus improves the electrocatalytic activity due to synergistic effect between graphene and Ni 3 S 2 . Ni 3 S 2 @G hybrid shows outstanding performance toward both hydrogen evolution reactions (HER) and oxygen evolution reactions (OER) with low overpotentials (η 10 = 103 mV for HER and η 20 = 294 mV for OER) and small Tafel slope. Ni 3 S 2 @G electrode also exhibits superior full water splitting ability with a low cell voltage of 1.66 V.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 772-779 |
| Number of pages | 8 |
| Journal | Applied Surface Science |
| Volume | 465 |
| DOIs | |
| State | Published - Jan 28 2019 |
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Keywords
- Electrocatalyst
- Graphene
- Nickel sulphide
- Synergistic effect
- Water splitting
ASJC Scopus subject areas
- Surfaces, Coatings and Films
Cite this
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In-situ growth of graphene decorated Ni 3 S 2 pyramids on Ni foam for high-performance overall water splitting . / Yu, Jing; Du, Yue; Li, Qianqian; Zhen, Liang; Dravid, Vinayak P; Wu, Jinsong; Xu, Cheng Yan.
In: Applied Surface Science, Vol. 465, 28.01.2019, p. 772-779.Research output: Contribution to journal › Article
TY - JOUR
T1 - In-situ growth of graphene decorated Ni 3 S 2 pyramids on Ni foam for high-performance overall water splitting
AU - Yu, Jing
AU - Du, Yue
AU - Li, Qianqian
AU - Zhen, Liang
AU - Dravid, Vinayak P
AU - Wu, Jinsong
AU - Xu, Cheng Yan
PY - 2019/1/28
Y1 - 2019/1/28
N2 - Rational design of high-performance electrocatalysts with low cost and large abundance is highly desirable for water splitting technology. Here we report the synthesis of Ni 3 S 2 pyramids coated with crimped graphene (Ni 3 S 2 @G), the unique configuration of which endows Ni 3 S 2 @G with large roughness, creating much more active sites along the edges. Moreover, the coupling of graphene enhances the electrical conductivity of the nanocomposite, and thus improves the electrocatalytic activity due to synergistic effect between graphene and Ni 3 S 2 . Ni 3 S 2 @G hybrid shows outstanding performance toward both hydrogen evolution reactions (HER) and oxygen evolution reactions (OER) with low overpotentials (η 10 = 103 mV for HER and η 20 = 294 mV for OER) and small Tafel slope. Ni 3 S 2 @G electrode also exhibits superior full water splitting ability with a low cell voltage of 1.66 V.
AB - Rational design of high-performance electrocatalysts with low cost and large abundance is highly desirable for water splitting technology. Here we report the synthesis of Ni 3 S 2 pyramids coated with crimped graphene (Ni 3 S 2 @G), the unique configuration of which endows Ni 3 S 2 @G with large roughness, creating much more active sites along the edges. Moreover, the coupling of graphene enhances the electrical conductivity of the nanocomposite, and thus improves the electrocatalytic activity due to synergistic effect between graphene and Ni 3 S 2 . Ni 3 S 2 @G hybrid shows outstanding performance toward both hydrogen evolution reactions (HER) and oxygen evolution reactions (OER) with low overpotentials (η 10 = 103 mV for HER and η 20 = 294 mV for OER) and small Tafel slope. Ni 3 S 2 @G electrode also exhibits superior full water splitting ability with a low cell voltage of 1.66 V.
KW - Electrocatalyst
KW - Graphene
KW - Nickel sulphide
KW - Synergistic effect
KW - Water splitting
UR - http://www.scopus.com/inward/record.url?scp=85054167799&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85054167799&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2018.09.177
DO - 10.1016/j.apsusc.2018.09.177
M3 - Article
VL - 465
SP - 772
EP - 779
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -