TY - JOUR
T1 - Hollow Porous Heterometallic Phosphide Nanocubes for Enhanced Electrochemical Water Splitting
AU - Guo, Yanna
AU - Tang, Jing
AU - Wang, Zhongli
AU - Sugahara, Yoshiyuki
AU - Yamauchi, Yusuke
N1 - Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/11/2
Y1 - 2018/11/2
N2 - Highly efficient earth-abundant electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are of great importance for renewable energy conversion systems. Herein, hollow porous heterometallic phosphide nanocubes are developed as a highly active and robust catalyst for electrochemical water splitting via one-step phosphidation of a NiCoFe Prussian blue analogue. Through modulation of the composition of metals in the precursors, the optimal NiCoFeP exhibiting increased electrical conductivity and abundant electrochemically active sites, leading to high electrocatalytic activities and outstanding kinetics for both HER and OER, is successfully obtained. NiCoFeP shows low overpotentials of 273 mV for OER and 131 mV for HER at a current density of 10 mA cm−2 and quite low Tafel slopes of 35 mV dec−1 for OER and 56 mV dec−1 for HER.
AB - Highly efficient earth-abundant electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are of great importance for renewable energy conversion systems. Herein, hollow porous heterometallic phosphide nanocubes are developed as a highly active and robust catalyst for electrochemical water splitting via one-step phosphidation of a NiCoFe Prussian blue analogue. Through modulation of the composition of metals in the precursors, the optimal NiCoFeP exhibiting increased electrical conductivity and abundant electrochemically active sites, leading to high electrocatalytic activities and outstanding kinetics for both HER and OER, is successfully obtained. NiCoFeP shows low overpotentials of 273 mV for OER and 131 mV for HER at a current density of 10 mA cm−2 and quite low Tafel slopes of 35 mV dec−1 for OER and 56 mV dec−1 for HER.
KW - composition modulation
KW - heterometallic phosphide
KW - hollow structure
KW - hydrogen evolution reaction
KW - oxygen evolution reaction
UR - http://www.scopus.com/inward/record.url?scp=85054498501&partnerID=8YFLogxK
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U2 - 10.1002/smll.201802442
DO - 10.1002/smll.201802442
M3 - Article
C2 - 30286273
AN - SCOPUS:85054498501
SN - 1613-6810
VL - 14
JO - Small
JF - Small
IS - 44
M1 - 1802442
ER -
