2024
DOI: 10.1021/acscatal.3c06243
|View full text |Cite
|
Sign up to set email alerts
|

Integrating Atomically Dispersed Ir Sites in MnCo2O4.5 for Highly Stable Acidic Oxygen Evolution Reaction

Kang Hua,
Xiaoke Li,
Zhiyan Rui
et al.

Abstract: Industrial water electrolysis requires oxygen evolution reaction (OER) catalysts that exhibit both high activity and adaptability to high current densities. However, single Ir atoms of the OER catalysts often show high performance in the three-electrode system but are limited to low current densities in proton exchange membrane water electrolyzers (PEMWE). The high oxidation potential and catalyst shedding caused by oxygen bubble desorption have hindered the stability, resulting in unsatisfactory PEMWE perform… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

0
3
0

Year Published

2024
2024
2025
2025

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 16 publications
(3 citation statements)
references
References 64 publications
0
3
0
Order By: Relevance
“…This lower value suggests more rapid reaction kinetics for Ir-MIL-88A@NiFe-LDHs. Moreover, as shown in Figure d, when contrasted with various other recently reported Ir-based catalysts, the OER performance of Ir-MIL-88A@NiFe-LDHs is notably superior. …”
Section: Resultsmentioning
confidence: 73%
“…This lower value suggests more rapid reaction kinetics for Ir-MIL-88A@NiFe-LDHs. Moreover, as shown in Figure d, when contrasted with various other recently reported Ir-based catalysts, the OER performance of Ir-MIL-88A@NiFe-LDHs is notably superior. …”
Section: Resultsmentioning
confidence: 73%
“…35,36 Successful attempts have been made using manganese oxides to support Ir species featuring enhanced OER performance in a narrow pH range. 29,37–40 These electrocatalysts, however, still suffer from high Ir usage and poor performance, especially in neutral or acidic media. 6,41,42 It is still challenging to develop advanced manganese oxide-supported Ir-based OER electrocatalysts in a wide pH range.…”
Section: Introductionmentioning
confidence: 99%
“…Various strategies, including alloying, fabricating hierarchical structures, and introducing catalyst supports, have been investigated to develop electrocatalysts with low Ir content (≤0.4 mg Ir ·cm –2 ). Studies on fuel cells have shown that introducing support materials can improve catalyst utilization and significantly reduce the use of precious metals . In particular, carbon, which exhibits a well-developed pore structure (high specific surface area) and excellent electrical conductivity, may serve as an ideal support for enhancing performance while minimizing Ir usage.…”
mentioning
confidence: 99%