**6. Economy efficiency**

Nowadays, the industry is focusing on improving product performance and reducing production costs. The supercapacitor components improve themselves, not only in the manufacturing process and technology, but in the direction to find stable and effective electrode and electrolyte materials, and to improve the performances, as well as to reduce the cost [8].

Following their properties, various industries and applications use supercapacitors, since they bring features, such as a safe, eco-friendly, and economical source of energy to the industry. It has been noted that the global supercapacitor market is supposed to attain US\$ 8.3 billion by 2025. This market is predicted to enhance at a compound annual growth rate (CAGR) of 30% until 2025 [65, 66]. As provided in the recent reports, the cost of the material is a major constraint of market growth. Even though these disadvantages inhibit the supercapacitors' market growth, there is a high number of research groups that are focusing on minimizing the overall cost, and improving the supercapacitors adoption rate in the current market [66, 67]. CO2 emission regulations that have been regulated in many countries worldwide, also have stimulated the usage of supercapacitors in the industry. This green agenda secures the future development of the supercapacitors, improvement of their properties, and their further research [13].

### **Acknowledgements**

This research has resulted from the Projects funded by the Ministry of Education, Science and Technological Development, Government of the Republic of Serbia, grant numbers 451-03-9/2021-14/ 200135, 451-03-9/2022-14/ 200131, and 451-03-9/ 2022-14/ 200223.

*Updates on Supercapacitors*
