Solvothermal synthesis of ternary Cu2O-CuO-RGO composites as anode materials for high performance lithium-ion batteries

Free-Standing Selenium Impregnated Carbonized Leaf Cathodes for High-Performance Sodium-Selenium Batteries

“…Fortunately, renewable materials with remarkable properties provided by nature can meet our needs [5, 37]. For example, natural leaves are diversified with heteroatom-doping and exceptional porous structure and these natural hard carbons, which possess the impressive ability to store sodium ions, can act as alternative substitutes of traditional materials as electrode materials for SIB devices [32, 37]. The leaves of Ficus can be carbonized by thermal pyrolysis, and it is extremely satisfying that obtained leaves possess a hierarchical porous structure and moderate surface area.…”

Structure-tunable supraparticle assemblies of hollow cupric oxide sheathed with nanographenes

“…This electrochemical performance of RNGO/CuO is comparable to that of other CuO-based anode materials. 13,[20][21][22][23] The discharge capacities of the RNGO/CuO material were higher than those of Cu 2 O and NGO/Cu 2 O throughout all 50 cycles. Furthermore, RNGO/CuO showed a highly enhanced cycling stability of 71%, compared to that of bare CuO SPs of 30% for 100 cycles (Fig.…”

“…To address these drawbacks, extensive efforts have been made to carefully engineer the nanoscale structure of CuO, such as nanoparticles, nanosheets, nanowires, and nanocomposites, due to their inherent advantages in providing more reaction sites on the surface and their ability to accommodate strain relaxation more efficiently compared to conventional bulk electrode materials. [11][12][13][16][17][18][19][20][21][22][23] However, it is still highly desirable to pursue new materials with unconventional morphology and compositions of nanostructured CuO.…”

Template synthesis of the Cu 2 O nanoparticle-doped hollow carbon nanofibres and their application as non-enzymatic glucose biosensors

“…As shown in figure 5 b , the peaks at 932.58 and 953.38 eV were, respectively, assigned to Cu2p 3/2 and Cu2p 1/2 of Cu 2 O, suggesting the presence of Cu 2 O [31]. It is reported in the literature that a satellite peak in the XPS spectrum of Cu2p indicates the presence of Cu(II) in the sample, unobvious satellite peaks appear in the figure 5 b , of Cu(II) in the sample, unobvious satellite peaks appear in figure 5 b , this means the presence of low content of Cu(II) in the sample [32]. The results of XPS are in consistent with the observation from XRD, it is further explained that the metal nanoparticles in the material are mainly Cu 2 O particles.…”