e-journal

Bio-Inspired Leaf-Mimicking Nanosheet/Nanotube Heterostructure as a Highly Effi cient Oxygen Evolution Catalyst

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Plant leaves represent a unique 2D/1D heterostructure for enhanced surface reaction and effi cient mass transport. Inspired by plant leaves, a 2D/1D CoO x heterostructure is developed that is composed of ultrathin CoO x nanosheets
further assembled into a nanotube structure. This bio-inspired architecture allows a highly active Co 2+ electronic structure for an effi cient oxygen evolution reaction (OER) at the atomic scale, ultrahigh surface area (371 m 2 g −1 ) for interfacial electrochemical reaction at the nanoscale, and enhanced transport of charge and electrolyte over CoO x nanotube building blocks at the microscale. Consequently, this CoO x nanosheet/nanotube heterostructure demonstrates
a record-high OER performance based on cobalt compounds reported so far, with an onset potential of ≈1.46 V versus reversible hydrogen electrode (RHE), a current density of 51.2 mA cm −2 at 1.65 V versus RHE, and a Tafel
slope of 75 mV dec −1 . Using the CoO x nanosheet/nanotube catalyst and a Ptmesh,a full water splitting cell with a 1.5-V battery is also demonstrated.

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Informasi Detail

Judul Seri

Adv. Sci.

No. Panggil

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Penerbit

: The Authors., 2015

Deskripsi Fisik

Adv. Sci. 2015, 2, 1500003

Bahasa

English

ISBN/ISSN

DOI: 10.1002/advs.20

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KESEHATAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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