1
|
Zheng Y, Yu D, Xu W, Zhang K, Ma K, Guo X, Lou Y, Hu M. Robust FeCoP nanoparticles grown on a rGO-coated Ni foam as an efficient oxygen evolution catalyst for excellent alkaline and seawater electrolysis. Dalton Trans 2023; 52:3493-3500. [PMID: 36846870 DOI: 10.1039/d2dt03857a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Electrochemical water splitting is a potential green hydrogen energy generation technique. With the shortage of fresh water, abundant seawater resources should be developed as the main raw material for water electrolysis. However, since the precipitation reaction of chloride ions in seawater will compete with the oxygen evolution reaction (OER) and corrode the catalyst, seawater electrolysis is restricted by the decrease in activity, low stability, and selectivity. Rational design and development of efficient and stable catalysts is the key to seawater electrolysis. Herein, a high-activity bimetallic phosphide FeCoP, grown on a reduced graphene oxide (rGO)-protected Ni Foam (NF) substrate using FeCo Prussian Blue Analogue (PBA) as a template, was designed for application in alkaline natural seawater electrolysis. The OER activity confirmed that the formed FeCoP@rGO/NF has high electrocatalytic performance. In 1 M KOH and natural alkaline seawater, the overpotential was only 257 mV and 282 mV under 200 mA cm-2, respectively. It also demonstrated long-term stability up to 200 h. Therefore, this study provides new insight into the application of PBA as a precursor of bimetallic phosphide in the electrolysis of seawater at high current density.
Collapse
Affiliation(s)
- Yingping Zheng
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China. .,Analysis and Testing Center, Southeast University, Nanjing 211189, P. R. China
| | - Dehua Yu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Wei Xu
- Analysis and Testing Center, Southeast University, Nanjing 211189, P. R. China
| | - Ke Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Kaili Ma
- Analysis and Testing Center, Southeast University, Nanjing 211189, P. R. China
| | - Xinyu Guo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Yongbing Lou
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Mulin Hu
- Hefei Technology College, Hefei 238000, P. R. China
| |
Collapse
|
2
|
Ma XA, Hai Y, Gong Y. Coordination compound-derived La-doped FeS 2/N-doped carbon (NC) as an efficient electrocatalyst for oxygen evolution reaction. CrystEngComm 2022. [DOI: 10.1039/d2ce00431c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By annealing/sulfuring of coordination compound (CC) precursors, [LaxFe1-x(H2O)8Fe(CN)6]·2hmt (x = 0, 0.33 and 0.5) (hmt = hexamethylenetetramine), it was synthesized FeS2/N-doped carbon (NC), La-doped FeS2/NC-0.33 and La-doped FeS2/NC-0.5. All of...
Collapse
|