The nanoscale V3S4 not only exhibits a high theoretical capacity and a high electric conductivity, but also provides a short pathway for electron transportation and Li+ diffusion.
Because architectures with suitable design can provide a highly conductive network with highly accessible specific surface area (SSA) and proper pore size distribution (PSD), which are crucial for charge transportation and ion diffusion, a review focusing more on the electrode architectures is necessary.
The large mesoporous channels between the mesoporous nanospheres provide an easily-accessed system which facilitates electrolyte transportation and lithium ion diffusion within the electrode materials.
The exceeding lithium storage performance is attributed to the synergy effect of nano size and exposed (111) surface of the NiO octahedra improving kinetics of charge transportation and Li ion diffusion.
In the solar cell, the generation of electricity involves the processes of light absorption, exciton generation and diffusion, charge separation, transportation, and collection.
Interestingly, TiO2 sample peptized with nitric acid possessed relatively high theoretical photocurrent density (0.545 mAcm−2) and pore diameter (150 Å), which are responsible for high electron-hole separation efficiency and diffusion and mass transportation of organic reactants during the photochemical degradation process.
The internal resistances of electrodes or load wire were simulated by a resistance, the characterizations of electron and charge transportation or diffusion between interfaces was simulated by a RC parallel circuit.
The EIS method is a powerful tool for developing membrane electrode assemblies (MEAs) with effective porosity and tortuosity for gas diffusion and ionic transportation, and furthermore, it is a useful tool for judging the process of MEA preparation.
This porous skeleton of Ni foam would provide effective electrolyte accessible channels for ion transportation, and shorten the distance for ion diffusion.
