Study of double perovskite La2B(II)MnO6 (B: Ni, Co, Cu) as electrode materials for energy storage

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

“…As a result, the prepared electrode achieved specific capacitance of 1075 F g À 1 (2549.4 F cm À 3 ) and maintained outstanding cycle stability. There are similar reports about double perovskite oxides, including La 2 CuCoO 6 , [228] La 2 CoMnO 6 , [229] La 2 B(II)MnO 6 (B: Ni, Co, Cu), [230] Dy 2 NiMnO 6 , [249] Y 2 NiMnO 6 , [251] and Sm 2 NiMnO 6 . [253] In general, doping heterogeneous cations in A or B-site cations of perovskite can improve conductivity or create more charge storage active sites, which is beneficial to its electrochemical properties.…”

“…As a result, the prepared electrode achieved specific capacitance of 1075 F g −1 (2549.4 F cm −3 ) and maintained outstanding cycle stability. There are similar reports about double perovskite oxides, including La 2 CuCoO 6 , [228] La 2 CoMnO 6 , [229] La 2 B(II)MnO 6 (B: Ni, Co, Cu), [230] Dy 2 NiMnO 6 , [249] Y 2 NiMnO 6 , [251] and Sm 2 NiMnO 6 [253] …”

“…The CNO samples showed more active sites and ordered morphology than that of LNO samples, thereby reaching better electrochemical properties, including specific capacitance of 399 C g −1 in 3 m KOH electrolyte and lower R ct . The ordered cations at the A or B sites give the perovskite oxides favorable factors to obtain superior electrochemical properties, such as oxygen kinetics, high conductivity, chemical stability, and so on [60,228–231,249–252] . For example, Wang et al.…”

“…The ordered cations at the A or B sites give the perovskite oxides favorable factors to obtain superior electrochemical properties, such as oxygen kinetics, high conductivity, chemical stability, and so on. [60,[228][229][230][231][249][250][251][252] For example, Wang et al developed the A-site cation-ordered double perovskite PrBaCo 2 O 5 + δ oxide through sol-gel method. [250] Numerous oxygen vacancies are easily generated on account of removable oxygen atoms in the Pr 3 + plane (Figure 11C,D).…”

Electrochemical Energy Storage Properties of Sm2FeCuO6 Double Perovskite Synthesized via Sol-Gel Route

“…1,[3][4][5][6][7] Limited experimental investigation of copper-based rare Earth double perovskites such as La 2 NiCuO 6 , La 2 CuSnO 6 , La 2 CuCoO 6 , and La 2 CuMnO 6 has been performed for applications such as catalysis and electrochemical performance. [8][9][10][11][12][13][14] Most of the experimentally investigated rare Earth double perovskites are based on lanthanum, with a number of combinations studied experimentally for different applications. The investigation of samarium-based double perovskites is limited, with Sm 2 NiMnO 6 , Sm 2 CoMnO 6 and Sm 2 CuRuO 6 having been studied.…”