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Ir Nanoparticles Synergistically Regulated by B, N Co-Doping in Carbon for pH-Universal Bifunctional Electrocatalysts towards Energy-Efficient Hydrogen Production

2025Journal article Restricted access
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datacite.subject.fosEngenharia e Tecnologia
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorHuang, Hongli
dc.contributor.authorMeng, Lijian
dc.contributor.authorli, Haibo
dc.contributor.authorLi, Rui
dc.contributor.authorZeng, Suyuan
dc.contributor.authorYao, Qingxia
dc.contributor.authorChen, Hongyan
dc.contributor.authorQu, Kong-Gang
dc.date.accessioned2025-02-07T16:33:29Z
dc.date.available2025-02-07T16:33:29Z
dc.date.issued2025
dc.description.abstractThe ultralow-potential hydrazine oxidation reaction (HzOR) can be integrated with hydrogen evolution reaction (HER) to construct the overall hydrazine splitting (OHzS) system, thus realizing energy-saving hydrogen production. Meanwhile, the real electrocatalytic processes normally involve the constantly changed pH and also need to operate under different pH conditions. Therefore, designing advanced pH-universal electrocatalysts with high compatibility for HER and HzOR is of greatly practical significance. Herein, ultrafine Ir nanoparticles embedding in B, N-codoped carbon (Ir/BNC) were facilely synthesized with one Ir-based complex and boric acid by simple mixing and pyrolysis. To reach the current density of 10 mA cm−2, the bifunctional Ir/BNC merely demands the low potentials of −4.8/-6.3/-38.5 mV for HER, 7.5/157.8/330.1 mV for HzOR, and 19/236/358 mV for OHzS in the alkaline, neutral and acidic electrolytes, respectively, all greatly outperforming commercial Pt/C and displaying the huge energy-saving advantage for pH-universal hydrogen generation over the conventional water splitting. Underlyingly, the codoping of abundant B and N heteroatoms with different electronic modulation effects can play synergistical roles to Ir active sites, endowing with the pH-universal multifunctionality as well as the boosted intrinsic unit activity. Additionally, the large surface area, rich pores and highly graphitized carbon also collectively ensure the remarkable apparent performance for bifunctional HER and HzOR. This work supplies a promising strategy for exploiting pH-universal HER and HzOR bifunctional electrocatalysts, greatly potential to the practical energy-efficient hydrogen generation.eng
dc.description.sponsorshipThis study was financially supported by the Development Project of Youth Innovation Team in Shandong Colleges and Universities (2019KJC031), the Natural Science Foundation of Shandong Province (ZR2022MB046, ZR2021MB122 and ZR2022MB137), and the Doctoral Program of Liaocheng University (318051608 and 318051516).
dc.identifier.citationHong-Li Huang, Lijian Meng, Haibo Li, Rui Li, Suyuan Zeng, Qingxia Yao, Hongyan Chen, Konggang Qu, Ir nanoparticles synergistically regulated by B, N Co-doping in carbon for pH-Universal bifunctional electrocatalysts towards energy-efficient hydrogen production, International Journal of Hydrogen Energy, Volume 99, 2025, Pages 212-220, ISSN 0360-3199, https://doi.org/10.1016/j.ijhydene.2024.12.198
dc.identifier.doi10.1016/j.ijhydene.2024.12.198
dc.identifier.urihttp://hdl.handle.net/10400.22/29434
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0360319924054053
dc.rights.uriN/A
dc.subjectIridium nanoparticle
dc.subjectB
dc.subjectN co-doping
dc.subjectHydrazine oxidation reaction
dc.subjectHydrogen evolution reaction
dc.subjectHydrogen energy
dc.titleIr Nanoparticles Synergistically Regulated by B, N Co-Doping in Carbon for pH-Universal Bifunctional Electrocatalysts towards Energy-Efficient Hydrogen Productioneng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage220
oaire.citation.startPage212
oaire.citation.titleInternational Journal of Hydrogen Energy
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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