Zheng Ye, Chun Han, Yuan Yuan, Gong Chen, Yuanzun Fu, Yunhe Zhao
{"title":"Phytic acid-modified NiFe-PBA stacked by π-π force for reinforcement electrocatalytic water oxidation","authors":"Zheng Ye, Chun Han, Yuan Yuan, Gong Chen, Yuanzun Fu, Yunhe Zhao","doi":"10.1039/d4qi01520g","DOIUrl":null,"url":null,"abstract":"Prussian blue analogues (PBAs) with unique three-dimensional (3D) open metal framework structure and easily adjustable composition have been widely used in oxygen evolution reaction (OER) under alkaline conditions. Herein, disintegrative PA-tPBA/NF (d-PA-tPBA/NF) was prepared by ion-exchange reaction, phytic acid (PA) etching and mild thermal activation using Ni(OH)2 layered nanosheets loaded on nickel foam (NF) as precursor. Due to the optimization of the NiFe-PBA@Ni(OH)2 heterostructure and π-π stacking force on the electron transfer structure, a stable high-speed charge transfer channel has been successfully constructed. Therefore, the OER overpotential required to transport 10 mA cm-2 is only 250 mV, especially with a significant Tafel slope of 47.9 mV dec-1. Furthermore, the d-PA-tPBA/NF||d-PA-tPBA/NF system achieved a current density of 10 mA cm-2 with a cell voltage of only 1.55 V. This study provides a promising strategy for exploring efficient OER electrocatalysts derived from PBA.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":null,"pages":null},"PeriodicalIF":6.1000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Chemistry Frontiers","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4qi01520g","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Prussian blue analogues (PBAs) with unique three-dimensional (3D) open metal framework structure and easily adjustable composition have been widely used in oxygen evolution reaction (OER) under alkaline conditions. Herein, disintegrative PA-tPBA/NF (d-PA-tPBA/NF) was prepared by ion-exchange reaction, phytic acid (PA) etching and mild thermal activation using Ni(OH)2 layered nanosheets loaded on nickel foam (NF) as precursor. Due to the optimization of the NiFe-PBA@Ni(OH)2 heterostructure and π-π stacking force on the electron transfer structure, a stable high-speed charge transfer channel has been successfully constructed. Therefore, the OER overpotential required to transport 10 mA cm-2 is only 250 mV, especially with a significant Tafel slope of 47.9 mV dec-1. Furthermore, the d-PA-tPBA/NF||d-PA-tPBA/NF system achieved a current density of 10 mA cm-2 with a cell voltage of only 1.55 V. This study provides a promising strategy for exploring efficient OER electrocatalysts derived from PBA.
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