Journal
NANO LETTERS
Volume 20, Issue 9, Pages 6807-6814Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02782
Keywords
hexagonal boron nitride; heterostructure; interface engineering; oxygen reduction reaction; electrocatalysis
Categories
Funding
- Hundred Talents Program of Zhejiang University
- Australian Research Council (ARC) [DE160100596, DP200100365]
- China Scholarship Council (CSC)
- Australian Research Council [DE160100596] Funding Source: Australian Research Council
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Developing heterostructures with well-defined interfaces is attracting ever-increasing interest toward the development of advanced electrocatalysts. Herein, hexagonal boron nitride (h-BN) nanosheets are reported as a multifunctional support for constructing efficient electrocatalysts for the oxygen reduction reaction (ORR). h-BN/Pd heterostructured electrocatalysts with decent activity and long-term durability are designed and synthesized by confining Pd nanoparticles (NPs) on ultrathin h-BN nanosheets. The robust h-BN serves as a durable platform to maintain the structural integrity of the heterostructured catalysts. Both experimental findings and theoretical calculations reveal that the strong interaction between h-BN and Pd downshifts the Pd d-band center and hence optimizes the affinity with the reaction intermediates. Meanwhile, h-BN also endows the heterostructured catalysts with superhydrophobic surfaces, promoting the diffusion kinetics of O-2. These findings open a new avenue for the rational design and development of heterostructured catalysts by interface engineering toward electrocatalysis applications.
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