In situ growth of metallic Ag0 intercalated CoAl layered double hydroxides as efficient electrocatalysts for the oxygen reduction reaction in alkaline solutions

2019 ◽  
Vol 48 (3) ◽  
pp. 1084-1094 ◽  
Author(s):  
Xiaolong Deng ◽  
Jinzhao Huang ◽  
Fashen Chen ◽  
Hao Wan ◽  
Yifan Lin ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Layered Double Hydroxides ◽  
Reduction Process ◽  
Reduction Reaction ◽  
Alkaline Solutions ◽  
In Situ Growth ◽  
Orr Activity ◽  
Electron Reduction ◽  
Double Hydroxides

Metallic Ag0 intercalated CoAl LDHs synthesized via a facile redox process exhibited excellent ORR activity through a four-electron reduction process.

In situ anchoring of metal nanoparticles in the N-doped carbon framework derived from conjugated microporous polymers towards an efficient oxygen reduction reaction

2018 ◽  
Vol 8 (14) ◽  
pp. 3572-3579 ◽  
Author(s):  
Qiang Li ◽  
Qi Shao ◽  
Qiong Wu ◽  
Qian Duan ◽  
Yanhui Li ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Nanoparticles ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Microporous Polymers ◽  
Carbon Framework ◽  
Orr Activity ◽  
Conjugated Microporous Polymers

A series of efficient catalysts derived from metallophthalocyanine based conjugated microporous polymers show superior ORR activity in Zn–air batteries.

In Situ Growth of Layered Double Hydroxides on Sawdust for Pb(II) Adsorption

2019 ◽  
Vol 4 (19) ◽  
pp. 5386-5393 ◽  
Author(s):  
Hao Gong ◽  
Hailong Li ◽  
Li Tan ◽  
Mengru Liu
Keyword(s):  
Layered Double Hydroxides ◽  
In Situ Growth ◽  
Double Hydroxides

In situ growth of layered double hydroxides on boehmite AlOOH for active and stable oxygen evolution in alkaline media

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10348-10357 ◽  
Author(s):  
Shijie He ◽  
Hua Lin
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Alkaline Media ◽  
In Situ Growth ◽  
Stable Oxygen ◽  
Double Hydroxides

The composition with V- or Ni-doped AlOOH nanorods drives FeNi and FeCo layered double hydroxides to obtain both high activity and better stability for the oxygen evolution reaction.

In-situ growth of ZnS/FeS heterojunctions on biomass-derived porous carbon for efficient oxygen reduction reaction

2020 ◽  
Vol 47 ◽  
pp. 79-85 ◽  
Author(s):  
Rong Jiang ◽  
Xin Chen ◽  
Jinxia Deng ◽  
Tianyu Wang ◽  
Kang Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
In Situ Growth

scholarly journals Unveiling the Degradation Nature of Pt/NbOx/C Catalysts for Oxygen Reduction Reaction via in situ X-ray Absorption Spectroscopy

2021 ◽  
Author(s):  
Ershuai Liu ◽  
Qingying Jia ◽  
Jun Yang ◽  
Kai Sun ◽  
Li Jiao ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Absorption Spectroscopy ◽  
Reduction Reaction ◽  
X Ray ◽  
Orr Activity ◽  
X Ray Absorption

Among various metal nanoparticles supported on metal oxide (MMO) catalysts, the Pt/NbOx/C system has promising oxygen reduction reaction (ORR) activity as cathode for proton exchange membrane fuel cells (PEMFCs). Herein, we study a series of Pt/NbOx/C catalysts with tunable structural and electronic properties via physical vapor deposition and unravel the nature of metal and metal oxide interaction (MMOI) by characterizing this system under reactive conditions. By conducting in situ X-ray absorption spectroscopy (XAS) experiments, we demonstrate the Pt preferably interacts with O but not Nb in the Pt/NbOx/C system and such Pt-O interaction benefits the ORR activity via electronic effect rather than strain effect. We also provide clear evidence for the formation of metallic Nb phase at the early stage of PEMFC operation and identify severe particle growth of Pt after long-term PEMFC operation. These findings deepen our understanding of the degradation mechanism of MMO catalysts during long-term PEMFC operation.

Sign in / Sign up

Export Citation Format

Share Document