Channel-Rich RuCu Nanosheets for pH-Universal Overall Water Splitting Electrocatalysis

Qing Yao; Bolong Huang; Nan Zhang; Mingzi Sun; Qi Shao; Xiaoqing Huang

doi:10.1002/anie.201908092

Channel-Rich RuCu Nanosheets for pH-Universal Overall Water Splitting Electrocatalysis

Qing Yao
, Bolong Huang
, Nan Zhang
, Mingzi Sun
, Qi Shao
, Xiaoqing Huang

Research output: Journal article publication › Journal article › Academic research › peer-review

379 Citations (Scopus)

Abstract

Channel-rich RuCu snowflake-like nanosheets (NSs) composed of crystallized Ru and amorphous Cu were used as efficient electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting in pH-universal electrolytes. The optimized RuCu NSs/C-350 °C and RuCu NSs/C-250 °C show attractive activities of OER and HER with low overpotentials and small Tafel slopes, respectively. When applied to overall water splitting, the optimized RuCu NSs/C can reach 10 mA cm⁻² at cell voltages of only 1.49, 1.55, 1.49 and 1.50 V in 1 m KOH, 0.1 m KOH, 0.5 m H₂SO₄ and 0.05 m H₂SO₄, respectively, much lower than those of commercial Ir/C∥Pt/C. The optimized electrolyzer exhibits superior durability with small potential change after up to 45 h in 1 m KOH, showing a class of efficient functional electrocatalysts for overall water splitting.

Original language	English
Pages (from-to)	13983-13988
Number of pages	6
Journal	Angewandte Chemie - International Edition
Volume	58
Issue number	39
DOIs	https://doi.org/10.1002/anie.201908092
Publication status	Published - 23 Sept 2019

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

channels
electrocatalysis
nanosheets
overall water splitting
ruthenium

ASJC Scopus subject areas

Catalysis
General Chemistry

More information

10.1002/anie.201908092

http://hdl.handle.net/10397/101512

Cite this

@article{51c721d685be4e4c95f03f2855dda030,

title = "Channel-Rich RuCu Nanosheets for pH-Universal Overall Water Splitting Electrocatalysis",

abstract = "Channel-rich RuCu snowflake-like nanosheets (NSs) composed of crystallized Ru and amorphous Cu were used as efficient electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting in pH-universal electrolytes. The optimized RuCu NSs/C-350 °C and RuCu NSs/C-250 °C show attractive activities of OER and HER with low overpotentials and small Tafel slopes, respectively. When applied to overall water splitting, the optimized RuCu NSs/C can reach 10 mA cm−2 at cell voltages of only 1.49, 1.55, 1.49 and 1.50 V in 1 m KOH, 0.1 m KOH, 0.5 m H2SO4 and 0.05 m H2SO4, respectively, much lower than those of commercial Ir/C∥Pt/C. The optimized electrolyzer exhibits superior durability with small potential change after up to 45 h in 1 m KOH, showing a class of efficient functional electrocatalysts for overall water splitting.",

keywords = "channels, electrocatalysis, nanosheets, overall water splitting, ruthenium",

author = "Qing Yao and Bolong Huang and Nan Zhang and Mingzi Sun and Qi Shao and Xiaoqing Huang",

year = "2019",

month = sep,

day = "23",

doi = "10.1002/anie.201908092",

language = "English",

volume = "58",

pages = "13983--13988",

journal = "Angewandte Chemie - International Edition",

issn = "1433-7851",

publisher = "John Wiley and Sons Ltd",

number = "39",

}

TY - JOUR

T1 - Channel-Rich RuCu Nanosheets for pH-Universal Overall Water Splitting Electrocatalysis

AU - Yao, Qing

AU - Huang, Bolong

AU - Zhang, Nan

AU - Sun, Mingzi

AU - Shao, Qi

AU - Huang, Xiaoqing

PY - 2019/9/23

Y1 - 2019/9/23

N2 - Channel-rich RuCu snowflake-like nanosheets (NSs) composed of crystallized Ru and amorphous Cu were used as efficient electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting in pH-universal electrolytes. The optimized RuCu NSs/C-350 °C and RuCu NSs/C-250 °C show attractive activities of OER and HER with low overpotentials and small Tafel slopes, respectively. When applied to overall water splitting, the optimized RuCu NSs/C can reach 10 mA cm−2 at cell voltages of only 1.49, 1.55, 1.49 and 1.50 V in 1 m KOH, 0.1 m KOH, 0.5 m H2SO4 and 0.05 m H2SO4, respectively, much lower than those of commercial Ir/C∥Pt/C. The optimized electrolyzer exhibits superior durability with small potential change after up to 45 h in 1 m KOH, showing a class of efficient functional electrocatalysts for overall water splitting.

AB - Channel-rich RuCu snowflake-like nanosheets (NSs) composed of crystallized Ru and amorphous Cu were used as efficient electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting in pH-universal electrolytes. The optimized RuCu NSs/C-350 °C and RuCu NSs/C-250 °C show attractive activities of OER and HER with low overpotentials and small Tafel slopes, respectively. When applied to overall water splitting, the optimized RuCu NSs/C can reach 10 mA cm−2 at cell voltages of only 1.49, 1.55, 1.49 and 1.50 V in 1 m KOH, 0.1 m KOH, 0.5 m H2SO4 and 0.05 m H2SO4, respectively, much lower than those of commercial Ir/C∥Pt/C. The optimized electrolyzer exhibits superior durability with small potential change after up to 45 h in 1 m KOH, showing a class of efficient functional electrocatalysts for overall water splitting.

KW - channels

KW - electrocatalysis

KW - nanosheets

KW - overall water splitting

KW - ruthenium

UR - https://www.scopus.com/pages/publications/85071152295

U2 - 10.1002/anie.201908092

DO - 10.1002/anie.201908092

M3 - Journal article

C2 - 31342633

AN - SCOPUS:85071152295

SN - 1433-7851

VL - 58

SP - 13983

EP - 13988

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 39

ER -

Channel-Rich RuCu Nanosheets for pH-Universal Overall Water Splitting Electrocatalysis

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this