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Sub‐3 nm Ultrafine Monolayer Layered Double Hydroxide Nanosheets for Electrochemical Water Oxidation

This study reports the synthesis of ultrafine NiFe‐layered double hydroxide (NiFe‐LDH) nanosheets, possessing a size range between 1.5 and 3.0 nm with a thickness of 0.6 nm. Abundant metal and oxygen vacancies impart the ultrafine nanosheets with semi‐metallic character, and thus superior charge tra...

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Published in:Advanced energy materials 2018-06, Vol.8 (18), p.n/a
Main Authors: Zhao, Yufei, Zhang, Xin, Jia, Xiaodan, Waterhouse, Geoffrey I. N., Shi, Run, Zhang, Xuerui, Zhan, Fei, Tao, Ye, Wu, Li‐Zhu, Tung, Chen‐Ho, O'Hare, Dermot, Zhang, Tierui
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cited_by cdi_FETCH-LOGICAL-c4605-2bbd98de4b2b2bd6b5b8d4673a8feca098d6dd066ab98981c88e27b6cedf66ec3
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container_issue 18
container_start_page
container_title Advanced energy materials
container_volume 8
creator Zhao, Yufei
Zhang, Xin
Jia, Xiaodan
Waterhouse, Geoffrey I. N.
Shi, Run
Zhang, Xuerui
Zhan, Fei
Tao, Ye
Wu, Li‐Zhu
Tung, Chen‐Ho
O'Hare, Dermot
Zhang, Tierui
description This study reports the synthesis of ultrafine NiFe‐layered double hydroxide (NiFe‐LDH) nanosheets, possessing a size range between 1.5 and 3.0 nm with a thickness of 0.6 nm. Abundant metal and oxygen vacancies impart the ultrafine nanosheets with semi‐metallic character, and thus superior charge transfer properties and electrochemical water oxidation performance with overpotentials (η) of 254 mV relative to monolayer LDH nanosheets (η of 280 mV) or bulk LDH materials (η of 320 mV) at 10 mA cm−2. These results are highly encouraging for the future application of ultrafine monolayer LDH nanosheets in electronics, solar cells, and catalysis. Ultrafine monolayer layered double hydroxide (LDH) nanosheets with a mean lateral size of less than 3 nm are obtained by the ultrasonic treatment of monolayer LDH nanosheets. Abundant vacancies impart the ultrafine nanosheets with semi‐metallic character, superior charge transfer properties, and electrocatalytic oxygen evolution performance relative to monolayer LDH nanosheets.
doi_str_mv 10.1002/aenm.201703585
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subjects Catalysis
Charge transfer
defects
Hydroxides
Intermetallic compounds
Iron compounds
layered double hydroxide
monolayer nanosheets
Monolayers
Nanosheets
Nickel compounds
Oxidation
Photovoltaic cells
Solar cells
water oxidation
title Sub‐3 nm Ultrafine Monolayer Layered Double Hydroxide Nanosheets for Electrochemical Water Oxidation
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