Co3O4/stainless steel catalyst with synergistic effect of oxygen vacancies and phosphorus doping for overall water splitting

Li, Xiaoxiao; Liu, Xiaochao; Liu, Chao; Zeng, Jinming; Qi, Xiaopeng

doi:10.1007/s42864-022-00144-7

Cited by 81 publications

(22 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anodic methanol oxidation reaction (MOR) as an important half-reaction plays a crucial role in methanol-based fuel cells by enabling the direct conversion of methanol into electricity, offering high energy density, fuel efficiency, environmental benefits, and ease of refueling. − However, this oxidation process involves the six-electron transfer and the conversion of multiple intermediates, which result in sluggish reaction kinetics, which is several orders of magnitude slower than the cathodic hydrogen evolution reaction (HER). − Thereafter, the development of efficient and durable anode catalysts is crucial for fuel cell commercialization.…”

Section: Introductionmentioning

confidence: 99%

Electronic Structure Effect of PtCo Alloy with Adjustable Compositions for Efficient Methanol Electrooxidation

Zheng,

Wang,

Ren

et al. 2023

Langmuir

View full text Add to dashboard Cite

Various efficient strategies have been developed to overcome the anodic electrocatalyst issue of methanol-based fuel cells owing to their complicated methanol electrooxidation mechanism. In this work, PtCo nanoparticles with adjustable compositions supported on multiwalled carbon nanotubes (Pt 1 Co x /MWCNTs) through the adsorbing−coating−annealing− etching route were synthesized. Compared with the Pt/C catalyst, Pt 1 Co 3 /MWCNTs exhibit better electrocatalytic MOR activity in both activity and durability. Notably, the electrochemical mass and specific activity of the as-prepared catalyst are 1.04 mA μg −1 Pt and 2.18 mA cm −2 , respectively, which are higher than those of the Pt/ C catalyst. Moreover, the as-prepared sample revealed lower onset potential during the CO stripping test. Furthermore, the Pt 1 Co 3 / MWCNTs possess a lower current density decrease rate in chronoamperometry and cyclic durability tests. The enhancement of activity and stability of Pt 1 Co 3 /MWCNTs could be ascribed to their ordered morphological structure, the electronic interaction between MWCNTs and PtCo nanoparticles, and the suitable electronic structure effect between Pt/Co ratios. The concept of the catalyst design in this study offers a different guideline for constructing the novel methanol electrooxidation catalyst, which will accelerate the widespread fuel cell practical application.

show abstract

Section: Introductionmentioning

confidence: 99%

Electronic Structure Effect of PtCo Alloy with Adjustable Compositions for Efficient Methanol Electrooxidation

Zheng,

Wang,

Ren

et al. 2023

Langmuir

View full text Add to dashboard Cite

show abstract

“…However, part of the surface-adsorbed hydrogen atom (H ad ), which is mainly produced by the dissociation of the B-H bonds, can also be used for the hydrogen evolution reaction 49,50 (HER, eqn (2)). Thus, the subsequent electronic utilization can be less than 100%: 51 H 2 O + H ad + e À -OH À + H 2 (2) Meanwhile, it should be noted that another inevitable reaction that is competitive with the main reaction is the spontaneous hydrolysis of BH 4 À (eqn (3)), which leads to incomplete utilization of NaBH 4 and the theoretical eight electrons 52 (eqn (4)):…”

Section: Reaction Kinetics Of Dbfcmentioning

confidence: 99%

Research progress on direct borohydride fuel cells

Liu,

Zhang,

Zhao

et al. 2024

Chem. Commun.

View full text Add to dashboard Cite

show abstract

“…For example, recent studies have shown that defects such as vacancies or doping in the electrocatalyst structure can substantially enhance electrocatalytic performance by facilitating charge transfer and improving the adsorption and activation of reactants. [49][50][51] Thus, research on unconventional active sites in water splitting has yielded valuable insights into the electrocatalytic mechanism, providing excellent prospects for the further development of electrocatalysts. The advanced experimental and computational techniques used in these studies have considerably expanded our understanding of electrocatalytic and may lead to further breakthroughs in this field.…”

Section: Unusual Active Sitesmentioning

confidence: 99%

“…There active sites may be unique owning to the presence of new materials, novel arrangements of atoms, or defects in the electrocatalytic structure. For example, recent studies have shown that defects such as vacancies or doping in the electrocatalyst structure can substantially enhance electrocatalytic performance by facilitating charge transfer and improving the adsorption and activation of reactants 49–51 . Thus, research on unconventional active sites in water splitting has yielded valuable insights into the electrocatalytic mechanism, providing excellent prospects for the further development of electrocatalysts.…”

Section: Conventional and Unusual Active Sitesmentioning

confidence: 99%

Advanced electrocatalysts with unusual active sites for electrochemical water splitting

Sun,

Xu,

Kim

et al. 2023

InfoMat

View full text Add to dashboard Cite

Electrochemical water splitting represents a promising technology for green hydrogen production. To design advanced electrocatalysts, it is crucial to identify their active sites and interpret the relationship between their structures and performance. Materials extensively studied as electrocatalysts include noble‐metal‐based (e.g., Ru, Ir, and Pt) and non‐noble‐metal‐based (e.g., 3d transition metals) compounds. Recently, advancements in characterization techniques and theoretical calculations have revealed novel and unusual active sites. The present review highlights the latest achievements in the discovery and identification of various unconventional active sites for electrochemical water splitting, with a focus on state‐of‐the‐art strategies for determining true active sites and establishing structure–activity relationships. Furthermore, we discuss the remaining challenges and future perspectives for the development of next‐generation electrocatalysts with unusual active sites. By presenting a fresh perspective on the unconventional reaction sites involved in electrochemical water splitting, this review aims to provide valuable guidance for the future study of electrocatalysts in industrial applications.image

show abstract

Co3O4/stainless steel catalyst with synergistic effect of oxygen vacancies and phosphorus doping for overall water splitting

Cited by 81 publications

References 49 publications

Electronic Structure Effect of PtCo Alloy with Adjustable Compositions for Efficient Methanol Electrooxidation

Electronic Structure Effect of PtCo Alloy with Adjustable Compositions for Efficient Methanol Electrooxidation

Research progress on direct borohydride fuel cells

Advanced electrocatalysts with unusual active sites for electrochemical water splitting

Contact Info

Product

Resources

About