Surface charge modulation boosts electrocatalytic water splitting over iridium catalysts on a polyimide support

Zhang, Longsheng; Zhang, Shouhan; Bai, Jing; Ding, Yidan; Ye, Jinyu; Song, Yuanhao; Debroye, Elke; Fan, Wei; Liu, Tianxi

doi:10.1039/d4cc01113a

Chem. Commun.

2024

DOI: 10.1039/d4cc01113a

|View full text |Cite

Surface charge modulation boosts electrocatalytic water splitting over iridium catalysts on a polyimide support

Longsheng Zhang,

Shouhan Zhang,

Jing Bai

et al.

Abstract: Developing high-performance iridium (Ir)-based catalysts with minimal precious Ir metals is significant but challenging towards acidic oxygen evolution reaction (OER). Here, we report a high-performance OER catalyst with Ir nanoparticles...

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Single‐Atom Zirconium Coordination Polyimide Aerogel as Separator Coating Toward High‐Rate Lithium Metal Battery

Zhou,

Bao,

Fang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Developing high‐rate lithium‐metal battery (LMB) with superior energy density and operation durability is of significance, which shows enormous potential to be extensively applied. However, the commercialized polyolefin separators exhibit inferior ability to resist the elevated internal temperature and inhibit the lithium (Li) dendrite growth, especially for LMBs under high‐rate operations. With undesired Li+‐anion solvated structures in the electrolyte, previous separator modification strategies usually meet a dilemma to simultaneously increase the Li+ transference number and decrease the anion transference number. Here, a facile and scalable strategy are reported to prepare high‐performance sandwiched separators with polyolefin separators coated by single‐atom zirconium coordination polyimide aerogel (Zr‐PIA) layers, which can achieve a stable LMB operation at 20 C for 2700 cycles with a capacity retention of 94.6%, substantially outperforming its counterpart separator without Zr. Both the experimental and theoretical studies suggest that the Zr‐PIA layer with nanoporous architecture and anion‐trapping Zr sites can effectively increase the Li+ transference number without sacrificing the overall ion conductivity, enabling a rapid, selective and uniform Li+ flux through the separator. Such features can facilitate homogeneous the Li nucleation/deposition and mitigate Li dendrite growth, leading to enhanced battery durability and safety.

show abstract

Single‐Atom Zirconium Coordination Polyimide Aerogel as Separator Coating Toward High‐Rate Lithium Metal Battery

Zhou,

Bao,

Fang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

Atomically Dispersed Iridium on Polyimide Support for Acidic Oxygen Evolution

Zhang,

Bai,

Zhang

et al. 2024

ACS Nano

View full text Add to dashboard Cite

Designing a high-performing iridium (Ir) single-atom catalyst is desired for acidic water electrolysis, which shows enormous potential given its high catalytic activity toward acidic oxygen evolution reaction (OER) with minimum usage of precious Ir metal. However, it still remains a substantial challenge to stabilize the Ir single atoms during the OER operation without sacrificing the activity. Here, we report a high-performing OER catalyst by immobilizing Ir single atoms on a polyimide support, which exhibits a high mass activity on a carbon paper electrode while simultaneously achieving outstanding stability with negligible decay for 360 h. The resulting electrode (denoted as Ir 1 −PI@CP) reaches a 49.7-fold improvement in mass activity compared to the counterpart electrode prepared without polyimide support. Both our experimental and theoretical results suggest that, owing to the strong metal−support interactions, the polyimide support can enhance the Ir 5d states of Ir single atoms in Ir 1 −PI@CP, which can tailor the adsorption energies of intermediates and decrease the thermodynamic barrier at the ratedetermining step of the OER, but also facilitate the proton−electron-transfer process and improve the reaction kinetics. This work offers an alternative avenue for developing single-atom catalysts with superior activity and durability toward various catalytic systems and beyond.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Surface charge modulation boosts electrocatalytic water splitting over iridium catalysts on a polyimide support

Abstract: Developing high-performance iridium (Ir)-based catalysts with minimal precious Ir metals is significant but challenging towards acidic oxygen evolution reaction (OER). Here, we report a high-performance OER catalyst with Ir nanoparticles...

Cited by 2 publications

References 44 publications

Single‐Atom Zirconium Coordination Polyimide Aerogel as Separator Coating Toward High‐Rate Lithium Metal Battery

Single‐Atom Zirconium Coordination Polyimide Aerogel as Separator Coating Toward High‐Rate Lithium Metal Battery

Atomically Dispersed Iridium on Polyimide Support for Acidic Oxygen Evolution

Contact Info

Product

Resources

About