18.2 C
Belgrade
Supported byspot_img
spot_img

Calcium battery passes test of running for multiple cycles

Member of Europium Groupspot_img
Supported byspot_img

A research group at Japan’s Tohoku University has developed a prototype calcium metal rechargeable battery capable of 500 cycles of repeated charge-discharge – the benchmark for practical use.

In a paper published in the journal Advanced Science, the scientists explain that as the fifth most abundant element on earth’s crust, calcium is widely available and inexpensive, and has the potential of providing higher energy density than the present components of lithium-ion batteries (LIBs). Its properties are also thought to help accelerate ion transport and diffusion in electrolytes and cathode materials, giving it an edge over other LIB alternatives such as magnesium and zinc.

However, according to the Tohoku team, many hurdles remain in the way of Ca metal batteries’ commercial viability. The lack of an efficient electrolyte and the absence of cathode materials with sufficient Ca2+ storage capabilities have proved to be the main stumbling blocks.

Supported by

In 2021, some members of the current research group provided a solution to the problem when they realized a new fluorine-free calcium electrolyte based on a hydrogen (monocarborane) cluster. The electrolyte demonstrated improved electrochemical performances such as high conductivity and high electrochemical stabilities.

“For our current research, we tested the long-term operation of a Ca metal battery with a copper sulphide (CuS) nanoparticle/carbon composite cathode and a hydride-based electrolyte,” Kazuaki Kisu, co-author of the paper, said in a media statement.

Kisu explained that also a natural mineral, CuS has favourable electrochemical properties. Its layered structure enables it to store a variety of cations, including lithium, sodium and magnesium. It has a large theoretical capacity of 560 mAh g-1 – two to three times higher than present cathode materials for lithium-ion batteries.

Through nanoparticulation and compositing with carbon materials, he and his colleagues were able to create a cathode capable of storing large amounts of calcium ions. When employed with the hydride-type electrolyte, they produce a battery with highly stable cycling performance. The prototype battery maintained 92% capacity retention over 500 cycles based on the capacity of the 10th cycle.

Based on these results, the group is confident that their breakthrough will help advance research into cathode materials for Ca-based batteries.

“Our study confirms the feasibility of Ca metal anodes for long-term operations, and we are hopeful the results will expedite the development of Ca metal batteries,” Kisu said.

 

Source: Mining

Supported byElevatePR Digital

Related News

IEA analysis calls for greater investment despite 2023 drop in clean energy mineral prices

Prices for key minerals used in clean energy technologies fell in 2023 as supply outpaced demand, easing pressure on the market. However, a new...

Europe must boost investment to secure raw materials for EV production

Europe's reliance on importing the majority of raw materials for electric vehicle (EV) production is proving increasingly unsustainable, leaving its economy vulnerable. This week,...

Exploring the strategic implications: Graphite and the European Union’s Critical Raw Materials Act

The European Commission's Critical Raw Materials Act (CRMA) has retained battery-grade graphite on its list of strategic raw materials in its final version, reflecting...

Heraeus Remloy’s innovative approach: Recycling magnets for a sustainable future

As demand for magnets, particularly those made from rare earths like neodymium, continues to soar across various industries, the need for sustainable production methods...
Supported by
Supported by
Supported by
error: Content is protected !!