Optimizing interfacial electronic coupling with metal oxide to activate inert polyaniline for superior electrocatalytic hydrogen generation

Zhen-Feng Huang; Jiajia Song; Yonghua Du; Shuo Dou; Libo Sun; Wei Chen; Kaidi Yuan; Zhengfei Dai; Xin Wang

doi:10.1002/cey2.3

Optimizing interfacial electronic coupling with metal oxide to activate inert polyaniline for superior electrocatalytic hydrogen generation

Zhen-Feng Huang
, Jiajia Song
, Yonghua Du
, Shuo Dou
, Libo Sun
, Wei Chen
, Kaidi Yuan
, Zhengfei Dai
, Xin Wang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

64 Citations (Scopus)

26 Downloads (CityUHK Scholars)

Abstract

Tuning and optimization of electronic structures and related reaction energetics are critical toward the rational design of efficient electrocatalysts. Herein, experimental and theoretical calculation demonstrate the originally inert N site within polyaniline (PANI) can be activated for hydrogen evolution by proper d-π interfacial electronic coupling with metal oxide. As a result, the as-synthesized WO₃ assemblies@PANI via a facile redox-induced assembly and in situ polymerization, exhibits the electrocatalytic production of hydrogen better than other control samples including W₁₈O₁₉@PANI and most of the reported nobel-metal-free electrocatalysts, with low overpotential of 74 mV at 10 mA•cm^-2 and small Tafel slope of 46 mV·dec^-1 in 0.5M H₂SO₄ (comparable to commercial Pt/C). The general efficacy of this methodology is also validated by extension to other metal oxides such as MoO₃with similar improvements. © 2019 The Authors. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd

Original language	English
Pages (from-to)	77-84
Journal	Carbon Energy
Volume	1
Issue number	1
Online published	5 Sept 2019
DOIs	https://doi.org/10.1002/cey2.3
Publication status	Published - Sept 2019
Externally published	Yes

Funding

The authors appreciate the supports from the National Research Foundation (NRF), Prime Minister's Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) programme. We also acknowledge financial support from the academic research fund AcRF tier 2 (M4020246, ARC10/15), Ministry of Education, Singapore.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

hydrogen evolution
interfacial electronic coupling
metal oxide
N–H bond
polyaniline

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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@article{e8b89e27d2c74d7fbc86560d0a5df9ab,

title = "Optimizing interfacial electronic coupling with metal oxide to activate inert polyaniline for superior electrocatalytic hydrogen generation",

abstract = "Tuning and optimization of electronic structures and related reaction energetics are critical toward the rational design of efficient electrocatalysts. Herein, experimental and theoretical calculation demonstrate the originally inert N site within polyaniline (PANI) can be activated for hydrogen evolution by proper d-π interfacial electronic coupling with metal oxide. As a result, the as-synthesized WO3 assemblies@PANI via a facile redox-induced assembly and in situ polymerization, exhibits the electrocatalytic production of hydrogen better than other control samples including W18O19@PANI and most of the reported nobel-metal-free electrocatalysts, with low overpotential of 74 mV at 10 mA•cm-2 and small Tafel slope of 46 mV·dec-1 in 0.5M H2SO4 (comparable to commercial Pt/C). The general efficacy of this methodology is also validated by extension to other metal oxides such as MoO3 with similar improvements. {\textcopyright} 2019 The Authors. Carbon Energy published by Wenzhou University and John Wiley \& Sons Australia, Ltd",

keywords = "hydrogen evolution, interfacial electronic coupling, metal oxide, N–H bond, polyaniline",

author = "Zhen-Feng Huang and Jiajia Song and Yonghua Du and Shuo Dou and Libo Sun and Wei Chen and Kaidi Yuan and Zhengfei Dai and Xin Wang",

year = "2019",

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language = "English",

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TY - JOUR

T1 - Optimizing interfacial electronic coupling with metal oxide to activate inert polyaniline for superior electrocatalytic hydrogen generation

AU - Huang, Zhen-Feng

AU - Song, Jiajia

AU - Du, Yonghua

AU - Dou, Shuo

AU - Sun, Libo

AU - Chen, Wei

AU - Yuan, Kaidi

AU - Dai, Zhengfei

AU - Wang, Xin

PY - 2019/9

Y1 - 2019/9

N2 - Tuning and optimization of electronic structures and related reaction energetics are critical toward the rational design of efficient electrocatalysts. Herein, experimental and theoretical calculation demonstrate the originally inert N site within polyaniline (PANI) can be activated for hydrogen evolution by proper d-π interfacial electronic coupling with metal oxide. As a result, the as-synthesized WO3 assemblies@PANI via a facile redox-induced assembly and in situ polymerization, exhibits the electrocatalytic production of hydrogen better than other control samples including W18O19@PANI and most of the reported nobel-metal-free electrocatalysts, with low overpotential of 74 mV at 10 mA•cm-2 and small Tafel slope of 46 mV·dec-1 in 0.5M H2SO4 (comparable to commercial Pt/C). The general efficacy of this methodology is also validated by extension to other metal oxides such as MoO3 with similar improvements. © 2019 The Authors. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd

AB - Tuning and optimization of electronic structures and related reaction energetics are critical toward the rational design of efficient electrocatalysts. Herein, experimental and theoretical calculation demonstrate the originally inert N site within polyaniline (PANI) can be activated for hydrogen evolution by proper d-π interfacial electronic coupling with metal oxide. As a result, the as-synthesized WO3 assemblies@PANI via a facile redox-induced assembly and in situ polymerization, exhibits the electrocatalytic production of hydrogen better than other control samples including W18O19@PANI and most of the reported nobel-metal-free electrocatalysts, with low overpotential of 74 mV at 10 mA•cm-2 and small Tafel slope of 46 mV·dec-1 in 0.5M H2SO4 (comparable to commercial Pt/C). The general efficacy of this methodology is also validated by extension to other metal oxides such as MoO3 with similar improvements. © 2019 The Authors. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd

KW - hydrogen evolution

KW - interfacial electronic coupling

KW - metal oxide

KW - N–H bond

KW - polyaniline

UR - https://www.scopus.com/pages/publications/85079063542

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85079063542&origin=recordpage

U2 - 10.1002/cey2.3

DO - 10.1002/cey2.3

M3 - RGC 21 - Publication in refereed journal

SN - 2637-9368

VL - 1

SP - 77

EP - 84

JO - Carbon Energy

JF - Carbon Energy

IS - 1

ER -

Optimizing interfacial electronic coupling with metal oxide to activate inert polyaniline for superior electrocatalytic hydrogen generation

Abstract

Funding

UN SDGs

Research Keywords

Publisher's Copyright Statement

Access Output

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