Energieopslagmechanisme van kathodematerialen

Are high-energy-density cathodes the future of lithium-based energy storage?

The tremendous growth of lithium-based energy storage has put new emphasis on the discovery of high-energy-density cathode materials 1. Although state-of-the-art layered Li (Ni,Mn,Co)O 2 (NMC) cathodes achieve good power and energy density, potential further improvements in these are limited.

What are the challenges for commercialization of high-energy-density cathode material?

They also summarized different challenges for commercialization like optimization of synthesis process, structural regulation and component adjustment, safety concerns. Shi et al. reported high-energy-density cathode material with high voltage and high capacity .

What modifications have been reported in cathode materials?

In this context, various types of modifications have been reported in cathode materials like introducing proper functional groups, incorporating rigid backbone structure, controlling the length of conjugation [207, 218]. Organic radical compounds have also attracted considerable interest owing to their high rate capability and cyclic stability.

What is a higher-potential cathode?

A higher-potential cathode and a lower-potential anode can be used to assemble a battery with higher voltage. Therefore, the rules and origins of electrochemical potential are essential in the modification or design of a superior electrode.

Which nanostructured materials are based on strain accommodation?

Finally, the design of nanostructured materials is also considered to realize the strain accommodation due to the size effect, such as LiFePO4 nanoplatelets (Figure 4 E), porous LiFePO 4 microspheres, and LiNi1/3 Co 1/3 Mn 1/3 O 2 nanoparticles.51, 94, 95 Figure 4. Typical Examples of Battery Electrode Materials Based on Strain Accommodation

Can cation overstoichiometry and Li excess be optimized for structural tuning?

Furthermore, we showed that the two chemical handles for structural tuning, namely, cation overstoichiometry and Li excess, can be strategically optimized to allow for fast Li transport kinetics, optimized voltage profiles and a largely tunable F-doping level and thus TM capacity to achieve the desired cyclability.