Abstract:Representatively, the ORR/ OER delivers the discharge/charge process of both aqueous Zn-air batteries and aprotic Li-air batteries which are promising power source candidates for prevailing portable devices and electric vehicles. [7][8][9][10][11][12][13][14] However, the sluggish kinetics of molecular oxygen electrocatalytic reduction and evolution lead to high overpotentials, poor rate capability and short cycle life, severely hampering the widespread implementation of these systems. [15][16][17] Exploring e… Show more
“…47 Additionally, the interface between 2H-1T ′ can show chalcogen vacancies and accumulated charges inducing enhanced charge transfer benecial for improved ORR kinetics, thus, performing better than the monophases. [48][49][50] This was further corroborated by decreased Tafel slope values of the polytypes compared to 1T ′ monophases (Fig. S9 †).…”
Section: Mechanistic Insightssupporting
confidence: 59%
“…47 Additionally, the interface between 2H-1T' can show chalcogen vacancies and accumulated charges inducing enhanced charge transfer beneficial for improved ORR kinetics, thus, performing better than the monophases. [48][49][50] This was further corroborated by decreased Tafel slope values of the polytypes compared to 1T' monophases (Figure S9). Additionally, the MoS 2 polytype shows improved stability while maintaining its polytypic nature during the long-term cycling of ORR, as shown in Figure S10, 11a.…”
Controlling the crystal phase in layered transition metal dichalcogenides (TMD) is critical for their diverse, flexible applications. However, due to the thermodynamic stability of 2H over other polymorphs, fine synthesis...
“…47 Additionally, the interface between 2H-1T ′ can show chalcogen vacancies and accumulated charges inducing enhanced charge transfer benecial for improved ORR kinetics, thus, performing better than the monophases. [48][49][50] This was further corroborated by decreased Tafel slope values of the polytypes compared to 1T ′ monophases (Fig. S9 †).…”
Section: Mechanistic Insightssupporting
confidence: 59%
“…47 Additionally, the interface between 2H-1T' can show chalcogen vacancies and accumulated charges inducing enhanced charge transfer beneficial for improved ORR kinetics, thus, performing better than the monophases. [48][49][50] This was further corroborated by decreased Tafel slope values of the polytypes compared to 1T' monophases (Figure S9). Additionally, the MoS 2 polytype shows improved stability while maintaining its polytypic nature during the long-term cycling of ORR, as shown in Figure S10, 11a.…”
Controlling the crystal phase in layered transition metal dichalcogenides (TMD) is critical for their diverse, flexible applications. However, due to the thermodynamic stability of 2H over other polymorphs, fine synthesis...
“…Nowadays, an oxide ultra-thin lm on a metal, 18,19 as a heterointerface, has been considered as a two-dimensional (2D) material for the fabrication and design of inversed metal catalysts. The introducing of ultra-thin 2D adlayers such as oxides, phosphides, uorides and suldes on a nanoalloy 20,21 could properly modify the surface reconstruction pathway of the nanoalloy to achieve optimal catalytic performance. 6,22 The hitherto-developed synthesis methods for 2D materials on metals or 2D heterointerfaces mainly include self-limiting growth during reconstruction treatment.…”
The emergence of heterointerfaces with two-dimensional oxide films grown on metal substrates have opened up a completely new opportunity for the development of energy conversion catalysts. However, the mechanism understanding...
“…The heterostructure interface can efficiently adsorb electron-donating/electron-withdrawing groups, triggering a fast electrocatalytic rate with high reaction kinetics. 108 More importantly, the construction of heterostructures is a rational approach for achieving bifunctional activity. Qiao's group strongly coupled CoO nanoclusters with high-index facet Mn 3 O 4 nano-octahedrons (hi-Mn 3 O 4 ) as bifunctional oxygen electrocatalysts.…”
Sustainable zinc–air batteries are considered promising energy storage devices owing to their inherent safety, high energy density, wide operating temperature window, environmental friendliness, etc., showing great prospect for future applications.
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