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Metal–Organic‐Framework‐Derived Co 2 P Nanoparticle/Multi‐Doped Porous Carbon as a Trifunctional Electrocatalyst
Author(s) -
Liu Haitao,
Guan Jingyu,
Yang Shaoxuan,
Yu Yihuan,
Shao Rong,
Zhang Zhengping,
Dou Meiling,
Wang Feng,
Xu Qiang
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202003649
Subject(s) - electrocatalyst , materials science , oxygen evolution , catalysis , water splitting , carbon fibers , electrochemistry , chemical engineering , zeolitic imidazolate framework , heteroatom , metal organic framework , electron transfer , reversible hydrogen electrode , inorganic chemistry , nanoparticle , adsorption , nanotechnology , electrode , chemistry , photochemistry , organic chemistry , working electrode , composite number , composite material , ring (chemistry) , photocatalysis , engineering
Developing efficient and low‐cost replacements for precious metals as electrocatalysts active in electrochemical reactions—the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and oxygen reduction reaction (ORR)—is a top priority in renewable energy technology. In this work a highly active and very stable trifunctional electrocatalyst composed of Co 2 P embedded in Co, N, and P multi‐doped carbon has been synthesized using zeolitic imidazolate frameworks as precursors. The synergistic effects between Co 2 P and the multi‐heteroatom‐doped carbon substrates afford materials having electrocatalytic activities for HER, OER, and ORR, which are comparable—or even superior to—those of commercial RuO 2 or Pt/C catalysts. Density functional theory calculations show that Co 2 P has a higher density of states at the Fermi level than Co n P (0 < n < 2), which promotes electron transfer and intermediates adsorption in the catalytic process. Zinc–air batteries and water splitting devices assembled using the materials as electrode electrocatalysts show good performance and outstanding stability. This work represents a breakthrough in improving the catalytic performance of non‐precious metal electrocatalysts for OER, HER, and ORR, and opens new avenues for clean energy generation.