The rational design and exploration of the metal oxide-carbon composite are greatly desired for enhanced supercapacitor application. Herein, we develop a novel Bi 2 MoO 6 and carbon sphere hybrid material as a supercapacitor electrode via a simple solvothermal process. The microstructural analysis of the carbon sphere@Bi 2 MoO 6 reveals that the 10 nm thick Bi 2 MoO 6 nanopetals are consistently anchored on the carbon spheres surface, forming a 3-dimensional nanoarchitecture. The carbon sphere@Bi 2 MoO 6 electrode displays an excellent specific capacitance of 521.42 F g −1 at 1 A g −1 , which is one of the best values of any reported Bi 2 MoO 6 -based electrodes to date. Moreover, this hybrid electrode can accumulate total charge as high as 2083 C g −1 , which is consistent with high capacitance. The all-solid-state symmetric supercapacitor device exhibited the specific capacitance of 26.69 F g −1 , along with ∼80% of capacitance retention after 10000 cycles. The superior supercapacitor performance of the carbon sphere@Bi 2 MoO 6 electrode is primarily due to the hierarchical nanoarchitecture of Bi 2 MoO 6 , its promotion of redox reactions, and the presence of highly conductive carbon spheres at cores, which provides pathways for rapid electron transfer. These results highlight feasibility of the carbon sphere@Bi 2 MoO 6 hybrid material as a highly propitious electrode for supercapacitor applications.
A functionally graded BiErO (ESB)/YZrO (YSZ) bilayer electrolyte is successfully developed via a cost-effective screen printing process using nanoscale ESB powders on the tape-cast NiO-YSZ anode support. Because of the highly enhanced oxygen incorporation process at the cathode/electrolyte interface, a novel bilayer solid oxide fuel cell (SOFC) yields extremely high power density of ∼2.1 W cm at 700 °C, which is a 2.4 times increase compared to that of the YSZ single electrolyte SOFC.
Highly conductive Dy and Y co-doped bismuth oxides combined with La0.8Sr0.2MnO3−δ significantly enhanced the ORR and OER as oxygen electrodes for reversible SOCs.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.