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Flexible molybdenum phosphide nanosheet array electrodes for hydrogen evolution reaction in a wide pH range

Paper ID Volume ID Publish Year Pages File Format Full-Text
44984 46390 2016 6 PDF Available
Title
Flexible molybdenum phosphide nanosheet array electrodes for hydrogen evolution reaction in a wide pH range
Abstract

•MoP nanosheet array has been synthesized on carbon cloth (MoP NA/CC).•MoP NA/CC exhibits excellent electrocatalytic activity at all pH values.•MoP NA/CC shows superior stability at all pH values.

Searching for non-noble-metal hydrogen evolution reaction (HER) electrocatalysts with high efficiency and excellent durability is a great challenge for the hydrogen-based energy industry. In this paper, a three-dimensional self-supported hydrogen evolution cathode is present, where the MoP nanosheet array was grown on flexible carbon cloth (MoP NA/CC) via a two-step strategy: hydrothermally growing MoS2 nanosheet array on CC (MoS2 NA/CC) in advance, and then phosphidation to chemically convert the MoS2 NA/CC precusor into MoP NA/CC. When used as an integrated three-dimensional electrode for HER, MoP NA/CC shows a quiet low onset overpotential (50 mV vs reversible hydrogen electrode), high current density (j > 10 mA cm−2 at η = 124 mV), and a small Tafel slope (58 mV dec−1), as well as remarkable stability (<9% decay after 46 h electrolysis) in acidic conditions. Interestingly, the flexible MoP NA/CC electrode also offers superior electrocatalytic performance and remarkable durability for HER in both neutral and basic conditions.

Graphical abstractMoP nanosheet arrays supported on carbon cloth were developed via a two-step strategy as a novel electrocatalyst for hydrogen evolution reaction with superior catalytic activity and stability at all pH values.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
MoP nanosheets; Carbon cloth; Hydrogen evolution reaction; Electrocatalyst; All pH values
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Flexible molybdenum phosphide nanosheet array electrodes for hydrogen evolution reaction in a wide pH range
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 196, 5 November 2016, Pages 193–198
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us