Can permanent magnetic materials be used for energy storage

What are permanent magnets used for?

Permanent magnets serve as key components in various applications, including generating mechanical energy, converting electrical energy into mechanical energy, and establishing magnetic fields in medical equipment like magnetic resonance imaging (MRI) machines and data storage devices (hard disk drives) (Cui et al., 2018).

Are permanent magnets sustainable?

The high energy consumption and greenhouse gas emissions associated with rare earth mining and REO processing are also a concern for the sustainability of the energy transition using downstream products, such as permanent magnets (Binnemans et al., 2013; Kullik, 2019).

What are the applications of magnetic materials?

Besides, these magnetic materials find their applications in many areas such as recording media, data storage, electrochemical storage, thermal energy storage, etc. In addition, they are also used in medical diagnostics, drug targeting, innovative cancer therapies, magnetic resonance imaging, etc.

What are permanent magnet nanocomposites?

Permanent magnet nanocomposites are magnetic materials composed of at least two magnetic phases of complementary magnetic character that are combined at the nanoscale to exploit the best properties of each phase. In this manner, the magnetic behavior of the composite is superior to that of either component taken separately.

What makes a permanent magnet remanent?

In an ideal permanent magnet, a large remanent magnetic flux (B r) must be maintained in the absence of a magnetic field. This is achieved by having a large resistance to demagnetization (H c or intrinsic coercivity H ci).

Can magnetic fields be used in energy storage devices?

In summary, the application of magnetic fields in energy storage devices has just found a path. Based on its evidence of a positive effect on performance, its optimization and removal of shortcomings need deep and comprehensive exploration.