Fluorine‐Stabilized Defective Black Phosphorene as a Lithium‐Like Catalyst for Boosting Nitrogen Electroreduction to Ammonia
Honghong Liu, Guangtong Hai, Liang‐Xin Ding, Haihui Wang
Abstract
Abstract Electrocatalytic N 2 reduction reaction (NRR) is recognized as a zero‐carbon emission method for NH 3 synthesis. However, to date, this technology still suffers from low yield and low selectivity associated with the catalyst. Herein, inspired by the activation of N 2 by lithium metal, a highly reactive defective black phosphorene (D−BP ene ) is proposed as a lithium‐like catalyst for boosting electrochemical N 2 activation. Correspondingly, we also report a strategy for producing environmentally stable D−BP ene by simultaneously constructing defects and fluorination protection based on topochemical reactions. Reliable performance evaluations show that the fluorine‐stabilized D−BP ene can induce a high NH 3 yield rate of ≈70 μg h −1 mg cat. −1 and a high Faradaic efficiency of ≈26 % at −0.5 V vs. RHE in an aqueous electrolyte. This work not only exemplifies the first stable preparation and practical application of D−BP ene , but also brings a new design idea for NRR catalysts.