Developing negative electrode materials for batteries

What is the difference between positive and negative electrode materials?

A plethora of organic materials have been proposed and evaluated as both positive and negative electrode materials. Whereas positive electrode chemistries have attracted extensive attention in the context of practical research and advances overviews, the negative electrode field remains poorly analyzed from a critical point of view.

What are the limitations of a negative electrode?

The limitations in potential for the electroactive material of the negative electrode are less important than in the past thanks to the advent of 5 V electrode materials for the cathode in lithium-cell batteries. However, to maintain cell voltage, a deep study of new electrolyte–solvent combinations is required.

Can two-dimensional negative electrode materials be used in lithium-ion batteries?

CC-BY 4.0 . The pursuit of new and better battery materials has given rise to numerous studies of the possibilities to use two-dimensional negative electrode materials, such as MXenes, in lithium-ion batteries.

What is the specific capacity of a negative electrode material?

As the negative electrode material of SIBs, the material has a long period of stability and a specific capacity of 673 mAh g −1 when the current density is 100 mAh g −1.

Can nibs be used as negative electrodes?

In the case of both LIBs and NIBs, there is still room for enhancing the energy density and rate performance of these batteries. So, the research of new materials is crucial. In order to achieve this in LIBs, high theoretical specific capacity materials, such as Si or P can be suitable candidates for negative electrodes.

What materials are used for negative electrodes?

Carbon materials, including graphite, hard carbon, soft carbon, graphene, and carbon nanotubes, are widely used as high-performance negative electrodes for sodium-ion and potassium-ion batteries (SIBs and PIBs).