Uniform PdH0.33 nanodendrites with a high oxygen reduction activity tuned by lattice H

Shengjie Wang; Dongxu Tian; Xueliang Wang; Jiaqi Qin; Yujiao Tang; Jie Zhu; Yuanyuan Cong; Huiyuan Liu; Yang Lv; Chenxi Qiu; Zhanming Gao; Yujiang Song

Electrochemistry Communications (May 2019)

Uniform PdH0.33 nanodendrites with a high oxygen reduction activity tuned by lattice H

Shengjie Wang,
Dongxu Tian,
Xueliang Wang,
Jiaqi Qin,
Yujiao Tang,
Jie Zhu,
Yuanyuan Cong,
Huiyuan Liu,
Yang Lv,
Chenxi Qiu,
Zhanming Gao,
Yujiang Song

Affiliations

Shengjie Wang: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Dongxu Tian: School of Chemistry, Dalian University of Technology, Dalian, Liaoning 116024, China; Corresponding authors.
Xueliang Wang: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Jiaqi Qin: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Yujiao Tang: School of Chemistry, Dalian University of Technology, Dalian, Liaoning 116024, China
Jie Zhu: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Yuanyuan Cong: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Huiyuan Liu: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Yang Lv: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Chenxi Qiu: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Zhanming Gao: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
Yujiang Song: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China; Corresponding authors.

Journal volume & issue: Vol. 102
pp. 67 – 71

Abstract

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We report the synthesis of β-palladium hydride nanodendrites (PdH0.33 NDs). The uniform PdH0.33 NDs are 36.3 ± 5.0 nm in diameter and selectively expose (111) planes decorated with (221) and (331) high-indexed steps. The PdH0.33 NDs show a high mass activity of 0.719 A/mgPd at 0.9 V (vs. reversible hydrogen electrode-RHE) toward alkaline oxygen reduction reaction (ORR), which is 3.7 and 6.3 times that of commercial Pt/C and house-made Pd/C, respectively. This study exemplifies the possibility of using special morphology and lattice H to modify the strain and electronic effect of metal for the optimization of functionalities. Keywords: Palladium hydride, Nanodendrites, Oxygen reduction reaction, Oxygen adsorption energy

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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