Hf and Co Dual Single Atoms Co-Doped Carbon Catalyst Enhance the Oxygen Reduction Performance
© 2024 Wiley-VCH GmbH..
Single-atom metal-doped M-N-C (M═Fe, Co, Mn, or Ni) catalysts exhibit excellent catalytic activity toward oxygen reduction reactions (ORR). However, their performance still has a large gap considering the demand for their practical applications. This study reports a high-performance dual single-atom doped carbon catalyst (HfCo-N-C), which is prepared by pyrolyzing Co and Hf co-doped ZIF-8 . Co and Hf are atomically dispersed in the carbon framework and coordinated with N to form Co-N4 and Hf-N4 active moieties. The synergetic effect between Co-N4 and Hf-N4 significantly enhance the catalytic activity and durability of the catalyst. In an acidic medium, the ORR half-wave potential (E1/2 ) of the catalyst is up to 0.82 V , which is much higher than that of the Co-N-C catalyst without Hf co-doping (0.80 V). The kinetic current density of the catalyst is up to 2.49 A cm-2 at 0.85 V , which is 1.74 times that of the Co-N-C catalyst without Hf co-doping. Moreover, the catalyst exhibits excellent cathodic performance in single proton exchange membrane fuel cells and Zn-air batteries. Furthermore, Hf co-doping can effectively suppress the formation of H2 O2 , resulting in significantly improved stability and durability.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2024 |
|---|---|
| Enthalten in: |
Small (Weinheim an der Bergstrasse, Germany) - (2024) vom: 08. Jan., Seite e2310491 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Duan, Diancheng [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Dual-single-atom catalysts |
|---|
| Anmerkungen: |
Date Revised 08.01.2024 published: Print-Electronic Citation Status Publisher |
|---|
| doi: |
10.1002/smll.202310491 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM366802461 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM366802461 | ||
| 003 | DE-627 | ||
| 005 | 20240114232313.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240114s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1002/smll.202310491 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1252.xml |
| 035 | |a (DE-627)NLM366802461 | ||
| 035 | |a (NLM)38189624 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Duan, Diancheng |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Hf and Co Dual Single Atoms Co-Doped Carbon Catalyst Enhance the Oxygen Reduction Performance |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 08.01.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status Publisher | ||
| 520 | |a © 2024 Wiley-VCH GmbH. | ||
| 520 | |a Single-atom metal-doped M-N-C (M═Fe, Co, Mn, or Ni) catalysts exhibit excellent catalytic activity toward oxygen reduction reactions (ORR). However, their performance still has a large gap considering the demand for their practical applications. This study reports a high-performance dual single-atom doped carbon catalyst (HfCo-N-C), which is prepared by pyrolyzing Co and Hf co-doped ZIF-8 . Co and Hf are atomically dispersed in the carbon framework and coordinated with N to form Co-N4 and Hf-N4 active moieties. The synergetic effect between Co-N4 and Hf-N4 significantly enhance the catalytic activity and durability of the catalyst. In an acidic medium, the ORR half-wave potential (E1/2 ) of the catalyst is up to 0.82 V , which is much higher than that of the Co-N-C catalyst without Hf co-doping (0.80 V). The kinetic current density of the catalyst is up to 2.49 A cm-2 at 0.85 V , which is 1.74 times that of the Co-N-C catalyst without Hf co-doping. Moreover, the catalyst exhibits excellent cathodic performance in single proton exchange membrane fuel cells and Zn-air batteries. Furthermore, Hf co-doping can effectively suppress the formation of H2 O2 , resulting in significantly improved stability and durability | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a PEMFCs | |
| 650 | 4 | |a dual-single-atom catalysts | |
| 650 | 4 | |a oxygen reduction reaction | |
| 650 | 4 | |a synergistic effect | |
| 700 | 1 | |a Huo, Junlang |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Jiaxiang |e verfasserin |4 aut | |
| 700 | 1 | |a Chi, Bin |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Zhangsen |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Shuhui |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, He |e verfasserin |4 aut | |
| 700 | 1 | |a Cui, Zhiming |e verfasserin |4 aut | |
| 700 | 1 | |a Liao, Shijun |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Small (Weinheim an der Bergstrasse, Germany) |d 2005 |g (2024) vom: 08. Jan., Seite e2310491 |w (DE-627)NLM167400452 |x 1613-6829 |7 nnns |
| 773 | 1 | 8 | |g year:2024 |g day:08 |g month:01 |g pages:e2310491 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1002/smll.202310491 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |j 2024 |b 08 |c 01 |h e2310491 | ||