Boron-rich environment boosting ruthenium boride on B, N doped carbon outperforms platinum for hydrogen evolution reaction in a universal pH range

Qiao, Yueyang; Yuan, Pengfei; Pao, Chih‐Wen; Cheng, Yong; Pu, Zonghua; Xu, Qun; Mu, Shichun; Zhang, Jianan

doi:10.1016/j.nanoen.2020.104881

Cited by 75 publications

(51 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Along with the acidic electrocatalysis process, the B elements with low-valence state tend to be oxidized so that most of them are dissolved. Nevertheless, the residual electron-deficient B in the alloy substrate could generate a certain affinity to surface metal atoms, to provide extra binding sites such as metal-B-O bonds 51 , 52 , which also contributes to the superior OER activity. For comparison, we also prepared two W-Ir catalysts with different Ir contents for acidic OER activity and stability evaluation (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

IrW nanochannel support enabling ultrastable electrocatalytic oxygen evolution at 2 A cm−2 in acidic media

Wang

et al. 2021

Nat Commun

View full text Add to dashboard Cite

A grand challenge for proton exchange membrane electrolyzers is the rational design of oxygen evolution reaction electrocatalysts to balance activity and stability. Here, we report a support-stabilized catalyst, the activated ~200 nm-depth IrW nanochannel that achieves the current density of 2 A cm−2 at an overpotential of only ~497 mV and maintains ultrastable gas evolution at 100 mA cm−2 at least 800 h with a negligible degradation rate of ~4 μV h−1. Structure analyses combined with theoretical calculations indicate that the IrW support alters the charge distribution of surface (IrO2)n clusters and effectively confines the cluster size within 4 (n≤4). Such support-stabilizing effect prevents the surface Ir from agglomeration and retains a thin layer of electrocatalytically active IrO2 clusters on surface, realizing a win-win strategy for ultrahigh OER activity and stability. This work would open up an opportunity for engineering suitable catalysts for robust proton exchange membrane-based electrolyzers.

show abstract

Section: Resultsmentioning

confidence: 99%

IrW nanochannel support enabling ultrastable electrocatalytic oxygen evolution at 2 A cm−2 in acidic media

Wang

et al. 2021

Nat Commun

View full text Add to dashboard Cite

show abstract

“…prepared a novel B‐rich diruthenium triboride electrocatalyst supported on the B, N doped carbon nanofiber (Ru 2 B 3 @BNC) as excellent HER catalyst. It reveals the important role of electron‐deficient B atoms can promote the redistribution of local electrons, thereby improving performance [12a] . Importantly, with the increasing of B content, the initial potential of the ORR will move forward, and the limit diffusion current density will increase, indicating enhancing of catalytic activity [12b] …”

Section: Introductionmentioning

confidence: 98%

Two‐Dimensional Boron and Nitrogen Dual‐Doped Graphitic Carbon as an Efficient Metal‐Free Cathodic Electrocatalyst for Lithium‐Air Batteries

Zhang

Luo

et al. 2021

ChemElectroChem

View full text Add to dashboard Cite

The cathode catalyst for lithium‐air (Li‐air) batteries has a critical effect on battery performance. In this study, a two‐dimensional (2D) boron and nitrogen dual‐doped graphite carbon (BNC) catalyst prepared through a carbonization process was studied as a highly active electrocatalyst in Li‐air batteries. BNC offered high contents of boron and nitrogen as well as a graphene‐like structure. When employed as the catalyst for Li‐air batteries, it demonstrated good electrochemical performance, in terms of superior discharge capacity, low voltage gap, and long‐term stability. The as‐prepared special structure of BNC promoted the formation and diffusion of superoxide O2− and, meanwhile, reduced the oxygen release barrier by improving the charge transfer of oxygen ions.

show abstract

“…To this end, a wide variety of transition-metal materials have been explored as efficient nonprecious electrocatalysts for HER, such as transition metal chalcogenides, carbides, nitrides, and phosphides [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Especially, transition metal carbides (TMCs) have attracted extensive attention as efficient HER catalysts owing to its cost effective, wide pH stability, and Pt-like d-band electronic configuration [19,20].…”

Section: Introductionmentioning

confidence: 99%

Engineering nanointerface of molybdenum-based heterostructures to boost the electrocatalytic hydrogen evolution reaction

Liu

Zhou

et al. 2021

Journal of Energy Chemistry

View full text Add to dashboard Cite

Boron-rich environment boosting ruthenium boride on B, N doped carbon outperforms platinum for hydrogen evolution reaction in a universal pH range

Cited by 75 publications

References 51 publications

IrW nanochannel support enabling ultrastable electrocatalytic oxygen evolution at 2 A cm−2 in acidic media

IrW nanochannel support enabling ultrastable electrocatalytic oxygen evolution at 2 A cm−2 in acidic media

Two‐Dimensional Boron and Nitrogen Dual‐Doped Graphitic Carbon as an Efficient Metal‐Free Cathodic Electrocatalyst for Lithium‐Air Batteries

Engineering nanointerface of molybdenum-based heterostructures to boost the electrocatalytic hydrogen evolution reaction

Contact Info

Product

Resources

About