Influence of calcination temperature on the structural, morphological, optical, magnetic and electrochemical properties of Cu2P2O7 nanocrystals

Development of Novel Cathode with Large Lithium Storage Mechanism Based on Pyrophosphate‐Based Conversion Reaction for Rechargeable Lithium Batteries

“…The nano‐C–CPO exhibited a pure crystal structure of Cu 2 P 2 O 7 with C 12/ c 1 space group, even though high energy was applied and conductive carbon was coated on the particles by ball‐milling. The calculated lattice parameters of the nano‐C–CPO were a = 6.8845(3) Å, b = 8.1175(5) Å, c = 9.1658(5) Å, and β = 109.522°(4), which is well matched with those of pristine Cu 2 P 2 O 7 and the values reported in the literature . To confirm the decreased particle size of the nano‐C–CPO, we compared the crystallite sizes of the nano‐C–CPO and pristine Cu 2 P 2 O 7 using the Scherrer equation and associated XRD patterns.…”

“…The calculated lattice parameters of the nano-C-CPO were a = 6.8845(3) Å, b = 8.1175(5) Å, c = 9.1658(5) Å, and β = 109.522°(4), which is well matched with those of pristine Cu 2 P 2 O 7 and the values reported in the literature. [35,36] To confirm the decreased particle size of the nano-C-CPO, we compared the crystallite sizes of the nano-C-CPO and pristine Cu 2 P 2 O 7 using the Scherrer equation and associated XRD patterns. In addition, crystallite size indicates the size of coherently diffracting regions or domains of a material, and particle size indicates the size of single particle or agglomerated particles.…”

Multi‐walled carbon nanotubes supported copper phosphate microflowers for flexible solid‐state supercapacitor

“…With alluring physico‐chemical merits, several interesting phosphates or pyrophosphates of transition metals such as Mn, 14‐16 Fe, 17 Co, 18‐20 Ni, 21‐23 Cu 24,25 with different nanostructures and designs have been appreciably explored as promising electrode materials for supercapacitor applications over the past few years. In particular, Khan et al designed Co 2 P 2 O 7 nanosheets and achieved an enhanced specific capacitance of 580 F g −1 in a redox‐active electrolyte 26 .…”

“…A few reports are available on copper phosphate as a supercapacitor electrode. In 2018, Karaphun et al hydrothermally synthesized Cu 2 P 2 O 7 nanocrystals and achieved a specific capacitance of 297 F g −1 at 1 A g −1 with cyclic retention of 94.04% for 1000 cycles 24 . Similarly, Cu 2 (PO 4 ) 2 OH microstrips with a capacitance of 137 F g −1 and a retention of 91% after 2000 cycles have been reported 25 .…”

“…11 PO 4 3À polyhedral anions with an interconnected framework surpass the oxides/ sulfides/phosphides owing to more electropositivity of P with reduced bond iconicity and also the presence of robust P-O covalent bonds, confirming the MPhs structure as more chemically stable than the conducting polymers. 12,13 With alluring physico-chemical merits, several interesting phosphates or pyrophosphates of transition metals such as Mn, [14][15][16] Fe, 17 Co, [18][19][20] Ni, [21][22][23] Cu 24,25 with different nanostructures and designs have been appreciably explored as promising electrode materials for supercapacitor applications over the past few years. In particular, Khan et al designed Co 2 P 2 O 7 nanosheets and achieved an enhanced specific capacitance of 580 F g À1 in a redox-active electrolyte.…”