In:
ChemSusChem, Wiley, Vol. 14, No. 24 ( 2021-12-17), p. 5499-5507
Abstract:
Electrolysis of seawater can be a promising technology, but chloride ions in seawater can lead to adverse side reactions and the corrosion of electrodes. A new transition metal boride‐based self‐supported electrocatalyst was prepared for efficient seawater electrolysis by directly soaking nickel foam (NF) in a mixture of phenolic resin (PR) and boron carbide (B 4 C), followed by an 800 °C annealing. During PR carbonization process, the reaction of B 4 C and NF generated nickel boride (Ni x B) with high catalytic activity, while PR‐derived carbon coating was doped with boron atoms from B 4 C (B−C PR ). The B−C PR coating fixed Ni x B/B 4 C particles in the frames and holes to improve the space utilization of NF. Meanwhile, the B−C PR coating effectively protected the catalyst from the corrosion by seawater and facilitates the transport of electrons. The optimal Ni x B/B 4 C/B−C PR /NF required 1.50 and 1.58 V to deliver 100 and 500 mA cm −2 , respectively, in alkaline natural seawater for the oxygen evolution reaction.
Type of Medium:
Online Resource
ISSN:
1864-5631
,
1864-564X
DOI:
10.1002/cssc.202101800
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2411405-4
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