2025 button cell battery

Magnesium 2025 button cell battery technology has achieved a major breakthrough

With the development and progress of human society, energy issues have become increasingly prominent. With the development of the economy and society, the world has also paid more and more attention to environmental protection. The lithium-2025 button cell battery system and lead-acid battery system, which are now widely used, have been mature in industrial applications. However, these battery systems contain more or less harmful components to the environment and human body, and have certain safety hazards. In addition, the specific energy density of ion-type lithium batteries and other systems themselves is not outstanding, resulting in that no matter how the endurance is developed and improved, it cannot meet the needs of social progress (especially new energy vehicles). Since the beginning of the new century, the market has been looking forward to batteries with greater storage capacity, environmental friendliness, lower cost, and safer and more reliable.

In recent years, efficient, safe and environmentally friendly battery systems, especially rechargeable battery systems, have been a hot area of research for scientific research teams in various countries. Green batteries are the top priority for researchers. Magnesium ion batteries have been considered to be one of the new generation of battery systems to replace the current battery system because of their unique properties (magnesium batteries have two electrons gained and lost, while lithium batteries have only one electron gained and lost). At the same time, aqueous magnesium ion batteries have attracted the attention of scientists because they use aqueous solutions as electrolytes and have the characteristics of safety and environmental protection. Unfortunately, due to the strong electrical effect between anions and magnesium ions in most of the electrode materials currently developed, the directional movement of magnesium ions is hindered and they cannot move freely, which leads to the inability to achieve the ideal performance of magnesium batteries. Therefore, the development of suitable electrode materials is particularly important for the development and application of aqueous magnesium ion batteries.

Recently, a joint research team from Harbin University of Science and Technology and Harbin Institute of Technology developed a battery system with reduced graphene oxide wrapped magnesium manganate (MgMn2O4) as the positive electrode material. This battery has a specific capacity of 211mAh/g at a current density of 50 mAh/g, and a specific capacity density of 140mAh/g at a current density of 1000 mAh/g.

They first prepared nano-magnesium manganate materials using the sol-gel method, and then coated the magnesium manganate nanomaterials with reduced graphene oxide to obtain magnesium manganate/graphene composite materials. According to the calculation, the diffusion coefficient of magnesium ions in the composite material reached 1.03*10-8cm2/s, which is 15 times the diffusion rate of single magnesium manganate. The addition of reduced graphene oxide optimizes the interface performance of magnesium manganate, promotes the charge transfer reaction, and improves the conductivity of the electrode material; it also improves the diffusion of magnesium ions in the electrode, so that the entire battery system has excellent electrochemical performance.

Although this new aqueous magnesium 2025 button cell battery still has many problems to be solved before industrialization, its safety performance is guaranteed, which also provides new ideas for the development of new magnesium ion batteries. I believe that with the efforts of scientists, a new generation of batteries will soon appear in our daily lives.

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