Molybdenum and Niobium Codoped B-Site-Ordered Double Perovskite Catalyst for Efficient Oxygen Evolution Reaction

Sun, Hainan; Chen, Gao; Sunarso, Jaka; Dai, Jie; Zhou, Wei; Shao, Zongping

doi:10.1021/acsami.8b03702

Cited by 42 publications

(42 citation statements)

References 24 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is critical to tune the electronic structure of the B site for the electrochemical behavior of perovskite oxides; hence, doping the B-site is the most facile way in governing the OER performance. 49,56 For instance, Shao group demonstrated that B-site doping of SrTiO 3 with cobalt and iron elements resulted in an improved electrocatalyst for OER. 60 (e) schematic illustration of the main origin of the OER activation for SCP sample during ADT.…”

Section: B-site Dopingmentioning

confidence: 99%

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

2021

View full text Add to dashboard Cite

show abstract

Section: B-site Dopingmentioning

confidence: 99%

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

2021

View full text Add to dashboard Cite

show abstract

“…[65] They found that Mo and Nb co-doped double perovskite (Ba 2 CoMo 0.5 Nb 0.5 O 6−δ ) exhibited the enhanced intrinsic OER activity with a low Tafel slop (77 mV dec −1 ) and a low overpotential (435 mV) to reach 10 mA cm −2 . [66] Recently, Xu et al introduced redox inactive Zr and Y ions to prepare the modified perovskite oxides (BaCo 0.5−x Fe 0.5−x Zr x Y x O 3−δ , BCF(ZY) x ). The overpotential at 10 mA cm −2 of BCF(ZY) 0.1 was merely 320 mV in alkaline condition, and the intrinsic activity of such catalyst was about 52 times higher than the benchmark catalyst IrO 2 , due to the fast charge transfer and facile adsorption of OH − and desorption of O 2 .…”

Section: B-site Substitutionmentioning

confidence: 99%

Development of Perovskite Oxide‐Based Electrocatalysts for Oxygen Evolution Reaction

Liu

Zhou

Bai

et al. 2021

Small

View full text Add to dashboard Cite

solve the energy and environmental problems. The hydrogen production reaction from the electrolysis of water is considered to be the reverse reaction of hydrogen combustion, leading to an energy cycle with zero carbon emission. The electro catalytical water splitting is a green, environmentally friendly, and sustainable way to produce hydrogen. [2] The electrolysis of water includes the oxygen evolution reaction (OER) at the anode and the hydrogen evolution reaction at the cathode. OER is a four-electron transfer process, which requires high energy to overcome the reaction energy barrier. [3] Therefore, it is of great significance to prepare high-efficiency catalysts to accelerate the OER process. Among many catalysts, noble metal oxides have been considered as the best catalysts for OER, [4] such as IrO 2 and RuO 2 . However, the high cost and low abundance hinder their practical applications on large scale. [3a] Therefore, searching for noble metal-free catalysts with high cost-to-efficiency is necessary.Non-noble transition metals and their compounds have been reported to be active and stable for water oxidation in alkaline solutions. [4] The research on inexpensive and earth-rich alternative catalysts with high activity and long-term stability has been rapidly increasing, especially for 3d-transition metals (i.e., Fe, Co, Ni, etc.)-based oxides, [5] oxyhydrates, [6] perovskites, [7] phosphides, [8] nitrides, [9] selenide, [10] and sulfides. [11] Among various non-precious transition metal-based catalysts, perovskite oxides have been particularly interesting because of their low cost, high flexibility with abundant elemental compositions, and tunable electronic structures. Some of perovskite catalysts showed comparable or even higher catalytic performance to/than the noble metal oxide catalysts, such as IrO 2 and RuO 2 . They have a general formula ABO 3 , where A is an alkaline earth metal (Ba, Sr, etc.), alkali metal (Li, Na, etc.), or rare earth metal atom (La, Pr, etc.) and B is a transition metal atom (Mn, Co, Fe, Ni, etc.) (Figure 1). In the unit cell, the A-position cation is positively charged with 12-fold oxygen coordination, while the B-position cation is positively charged with sixfold oxygen coordination. The substitution of A and/or B cations can modify the physical (e.g., electronic structure), chemical (e.g., oxidation state), and catalytic properties. In addition, a series of perovskite derivatives with different crystal structures, including double perovskites (A 2 B 2 O 6 ), [12] triple perovskites (A 3 B 3 O 9 ), [13] quadruple perovskites (A 4 B 4 O 12 ), [14] and Ruddlesden-Popper perovskites (A n+1 B n O 3n+1 (n = 1, 2, and 3)), [15] further increase the diversity Perovskite oxides are studied as electrocatalysts for oxygen evolution reactions (OER) because of their low cost, tunable structure, high stability, and good catalytic activity. However, there are two main challenges for most perovskite oxides to be efficient in OER, namely less active sites and low electrical conductivity, ...

show abstract

“…In contrast, LSC required an overpotential of 420 mV to reach 10 mA cm −2 with a Tafel slope of 131 mV dec −1 and K-MoSe 2 exhibited negligible OER activity. It has been reported that the OER performance of perovskite oxide can be improved by the doping effect of molybdenum 30 . We thus conducted XPS analysis of Mo and Se in LSC/K-MoSe 2 under OER condition after water electrolysis to elucidate the potential doping effect of Mo on the OER performance of LSC/K-MoSe 2 (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

Highly efficient and robust noble-metal free bifunctional water electrolysis catalyst achieved via complementary charge transfer

et al. 2021

View full text Add to dashboard Cite

The operating principle of conventional water electrolysis using heterogenous catalysts has been primarily focused on the unidirectional charge transfer within the heterostructure. Herein, multidirectional charge transfer concept has been adopted within heterostructured catalysts to develop an efficient and robust bifunctional water electrolysis catalyst, which comprises perovskite oxides (La0.5Sr0.5CoO3–δ, LSC) and potassium ion-bonded MoSe2 (K-MoSe2). The complementary charge transfer from LSC and K to MoSe2 endows MoSe2 with the electron-rich surface and increased electrical conductivity, which improves the hydrogen evolution reaction (HER) kinetics. Excellent oxygen evolution reaction (OER) kinetics of LSC/K-MoSe2 is also achieved, surpassing that of the noble metal (IrO2), attributed to the enhanced adsorption capability of surface-based oxygen intermediates of the heterostructure. Consequently, the water electrolysis efficiency of LSC/K-MoSe2 exceeds the performance of the state-of-the-art Pt/C||IrO2 couple. Furthermore, LSC/K-MoSe2 exhibits remarkable chronopotentiometric stability over 2,500 h under a high current density of 100 mA cm−2.

show abstract

Molybdenum and Niobium Codoped B-Site-Ordered Double Perovskite Catalyst for Efficient Oxygen Evolution Reaction

Cited by 42 publications

References 24 publications

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Development of Perovskite Oxide‐Based Electrocatalysts for Oxygen Evolution Reaction

Highly efficient and robust noble-metal free bifunctional water electrolysis catalyst achieved via complementary charge transfer

Contact Info

Product

Resources

About