August 15, 2025Open Access

Exploring the Potential of Green Synthesized Sr0.8Ce0.2Fe0.8Co0.2O3 Using Orange and Lemon Extracts for Hybrid Supercapacitor Applications

AFAsmara FazalUniversity of the Punjab MIMuhammad Javaid IqbalUniversity of the Punjab MRMohsin Ali RazaUniversity of the Punjab

Key Points

Green-synthesized Sr0.8Ce0.2Fe0.8Co0.2O3 demonstrates a specific capacity of 300 C/g, showing its potential use in supercapacitors.
Electrochemical performance measured at 1 A/g current density highlighted the advantages of using lemon juice over orange juice as a reducing agent.
Auto-combustion synthesis of perovskite with plant extracts emphasizes a more sustainable approach to energy storage solutions.
Results suggest that plant extract-based synthesis can provide effective and eco-friendly electrode materials for hybrid supercapacitors.

Abstract

Supercapacitors are required to store energy from renewable resources to ensure a pollutant-free environment. To further encourage its study, researchers are interested in introducing green methods to produce electrode materials. Green synthesis is an innovative and emerging field because plant extracts are the best substitute for toxic chemicals. They are considered eco-friendly and cost-effective. In this work, two plant extracts, orange juice (ORJ) and lemon juice (LMJ), are used to synthesize the Sr0.8Ce0.2Fe0.8Co0.2O3 perovskite using the auto-combustion method. The electrochemical performance of Sr0.8Ce0.2Fe0.8Co0.2O3 made from LMJ and ORJ is compared to check their effectiveness. LMJ proved to be a better reducing agent than ORJ with a higher specific capacity of 300 C/g (544 F/g) at 1 A/g current density due to increased oxygen vacancies and surface area. These findings show that green-synthesized perovskites can be utilized in high-performance hybrid supercapacitor devices.

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