Pseudocapacitive Behavior of Ag₃PO₄ Nanospheres Prepared by a Sonochemical Process

Abstract

Ag 3 PO 4 nanospheres with an average size of 300 nm were synthesized via a sonochemical process. The electrochemical performances of the as-synthesized Ag 3 PO 4 nanospheres in aqueous KOH electrolyte with different concentrations were investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. The measured cyclic voltammetry curves as well as charge-discharge curves reveal a good pseudocapacitive behavior of Ag 3 PO 4 nanospheres. In a 1 M KOH electrolyte at a current density of 0.5 mA cm −2 , the speci c capacitance of Ag 3 PO 4 nanospheres is obtained to be 832 F g −1. However, Ag 3 PO 4 nanospheres exhibit an inferior charge-discharge cycling stability, which could be due to the formation of Ag 2 O during the cycling process.

High yield selective electrochemical conversion of N2 to NH3via morphology controlled silver phosphate under ambient conditions

“…The CV of the catalyst coated GCE revealed a reduction peak at 0 V and an oxidation peak at 0.62 V corresponding to the reduction of Ag + to Ag(0) and Ag(0) to Ag + , respectively (given in eqn (4) and (5)). 53 Ag + + e − → AgAg–e − → Ag + …”

Preparation of Nitrogen‐doped Silver Phosphate and Its Performance of Supercapacitors

“…[24] Liu et al discovered that the edge of the conduction band of Ag 3 PO 4 is composed of Ag 5 s5p and a small amount of P 3 s orbital, and the edge potential of the valence band top is composed of Ag 4d and O 2p orbital, showing a high oxidation potential of 2.67 eV. [25] Research by Zheng et al indicated that Ag 3 PO 4 displayed a high specific capacity of 832 F g À 1 at 0.5 A g À 1 , [26] meaning that Ag 3 PO 4 has good electronic transfer performance. However, as an excellent potential candidate material for supercapacitors, the specific capacity of Ag 3 PO 4 needs to be further increased.…”

Tuning the Morphology of Ag3PO4 Photocatalysts with an Elevated Concentration of KH2PO4

“…The composite of Ag3PO4/g-C3N4 [15], Ag3PO4/MoS2 [16], and Ag3PO4-coated carbon microspheres [17] may be designed with the hydrothermal synthesis. Graphene/Ag3PO4 quantum dots [12] and Ag3PO4 nanospheres [18] may be prepared using a sonochemical process. The composites of Ag3PO4/g-C3N4 [19], Ag3PO4/Ag2W2O7 heterojunction [20], and Ag3PO4-graphene [21] may be synthesized using co-precipitation method.…”