【摘 要】
：
Oxygen evolution reaction (OER) is a key process for electrochemical water splitting due to its intrinsic large overpotential. Recently, layered double hydroxides (LDHs), especially NiFe-LDH, have been regarded as highly performed electrocatalysts for OER
【机 构】
：
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Be
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Oxygen evolution reaction (OER) is a key process for electrochemical water splitting due to its intrinsic large overpotential. Recently, layered double hydroxides (LDHs), especially NiFe-LDH, have been regarded as highly performed electrocatalysts for OER in alkaline condition. Here we first present a new class of NiLa-LDH electrocatalyst synthesized by an electrochemical process for efficient water splitting. The as-prepared NiLa-LDH nanosheet arrays (NSAs) give remarkable electrochemical activity and durability under alkaline environments, with a low overpotential of 209 mV for OER to deliver a current density of 10 mA cm 2 , surpassing most of previous reported LDHs eletrocatalysts. The presence of NiLa-LDH in this work extends the studies about LDHs-based electrocatalysts, which will benefit the development of electrochemical energy storage and conversion systems.
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