Platinum/(Carbon‐Nanotube) Electrocatalyst Boosts Hydrogen Evolution Reaction in Acidic, Neutral and Alkaline Solutions
Widely used catalysts for electrocatalytic hydrogen (H<sub>2</sub>) evolution reaction (HER) have high platinum (Pt) contents and show low efficiencies in neutral and alkaline solutions. Herein, a carbon nanotube (CNT) supported Pt catalyst (Pt/CNT45) with 1 wt.% Pt is fabricated. For HER, the mass activity of Pt/CNT45 in acidic (18.76 A mg<sub>Pt</sub> <sup>-1</sup>), neutral (3.92 A mg<sub>Pt</sub> <sup>-1</sup>), and alkaline (3.88 A mg<sub>Pt</sub> <sup>-1</sup>) solutions is respectively much higher than those on commercial Pt/C catalyst with 20 wt.% Pt (acidic: 0.31 A mg<sub>Pt</sub> <sup>-1</sup>, neutral: 0.03 A mg<sub>Pt</sub> <sup>-1</sup>, alkaline: 0.07 A mg<sub>Pt</sub> <sup>-1</sup>). Thus, Pt/CNT45 enhances HER not only in acidic solutions but also in neutral and alkaline solutions. Pt<sup>δ+</sup> at Pt-CNT interface on Pt/CNT45 promotes water (H<sub>2</sub>O) dissociation and hydroxyl (OH) desorption from Pt/CNT45, thus enhancing HER. This work opens a new way for enhancing HER in a wider pH range by catalyst with low Pt content, and helpful for commercialization.
Authors
- Lei Zhang (ORCID: https://orcid.org/0000-0003-3439-8611)
- Yu‐Long Men (ORCID: https://orcid.org/0000-0002-3954-7922)
- Minghui Zhu (ORCID: https://orcid.org/0000-0003-1593-9320)
- Ning Dou (ORCID: https://orcid.org/0000-0002-7314-4609)
- Yingying Cai (ORCID: https://orcid.org/0000-0001-5020-0906)
- Yun‐Xiang Pan (ORCID: https://orcid.org/0000-0002-7992-1544)
- Yi Liu (ORCID: https://orcid.org/0000-0002-5529-8460)
- Peng Liu (ORCID: https://orcid.org/0000-0002-1667-6617)
Institutions
- Tongji University (CN)
- East China University of Science and Technology (CN)
- Second Military Medical University (CN)
- Shanghai Jiao Tong University (CN)
- Changhai Hospital (CN)
- State Key Laboratory of Chemical Engineering (CN)
Publication Details
- Journal
- Small
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1002/smll.202411181
- Citations
- 12
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 4.36
Funders
- National Natural Science Foundation of China