Breaking the Lifespan Barrier: Nippon Kojundo's Breakthrough in Zinc Batteries

The transition to sustainable energy requires batteries that are not only powerful but also safe and abundant. While lithium-ion batteries currently dominate the market, zinc-based secondary batteries are emerging as a formidable challenger due to their non-flammable nature and cost-effectiveness. However, the commercialization of zinc batteries has long been hindered by a critical technical hurdle: the growth of tree-like crystals known as dendrites on the zinc anode, which eventually cause short circuits and premature battery failure.

Nippon Kojundo Chemical, a leader in high-purity materials, has announced a significant breakthrough to address this challenge. The company has developed a specialized inhibitor designed for zinc anodes in next-generation batteries. By adding this inhibitor to the electrolyte, a uniform protective film forms on the zinc anode during the deposition process. This film ensures a smooth and even surface, effectively suppressing the formation of harmful dendrites. In experimental tests using zinc anode symmetrical cells, this technology improved the battery's cycle life by more than four times compared to conventional methods.

Beyond inhibition, Nippon Kojundo Chemical is leveraging its expertise in electroless plating to introduce a new conductive additive. This material consists of silver nanowires and silver nanoparticles. When applied near the electrode, these silver-based nanomaterials significantly enhance electrical conductivity, leading to improved capacity and overall battery stability.

The global market for zinc-based batteries is projected to grow rapidly as industries seek alternatives for grid-scale energy storage and consumer electronics. By solving the dual challenges of lifespan and conductivity, Nippon Kojundo Chemical is paving the way for the early practical application of these safe, high-capacity next-generation batteries. The company has already begun shipping samples to potential partners, marking a crucial step toward a new era of energy storage.