Details

Autor(en) / Beteiligte

• Wang, Hongjing
• Wang, Wenxin
• Yu, Hongjie
• Mao, Qiqi
• Xu, You
• Li, Xiaonian
• Wang, Ziqiang
• Wang, Liang

Titel

Interface engineering of polyaniline-functionalized porous Pd metallene for alkaline oxygen reduction reaction

Ist Teil von

• Applied catalysis. B, Environmental, 2022-06, Vol.307, p.121172, Article 121172

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Engineering the interface between two-dimensional materials and polymers is of great importance to improve their catalytic performance for oxygen reduction reaction (ORR). Hence, polyaniline (PANI)-functionalized porous Pd metallene (Pd@PANI metallene) is prepared via a two-step strategy. Due to the ultrathin porous nanosheets and interfacial structure, the Pd@PANI metallene possesses sufficient active sites and optimized electronic structure, which exhibits superior oxygen reduction performance in alkaline electrolyte. The mass and specific activities for Pd@PANI metallene are measured to 1.79 A mgPd−1 and 2.96 mA cm−2, which are 11.9 and 9.30 times those of Pt/C (0.15 A mgPd−1 and 0.32 mA cm−2), respectively. Additionally, the ORR performance and morphology of Pd@PANI metallene can be maintained after long-term stability testing, making it an excellent ORR catalyst. This work provides an effective interface engineering strategy to construct efficient two-dimensional ORR electrocatalysts to improve the performance. [Display omitted] •Polyaniline-functionalized porous Pd metallene was successfully prepared.•Polyaniline layers can modulate the electronic structure of the Pd metallene surface.•The Pd@PANI metallene exhibits outstanding catalytic performance of ORR.