Sustainable Materials for Electrochemical Supercapacitors

Electrochemical storage systems like secondary batteries and ultra-capacitors need continual performance development due to the long-term demand for rechargeable devices with a high specific energy and rapid charging. Supercapacitors are a recent development for electrochemical energy storage devices. Electrode materials have a lot of interesting features, like a wide active area, high electrical, chemical, and mechanical properties. That kind of makes this a great material for supercapacitor devices. The most prominent factor of electrode materials is that they are environment friendly and non-toxic. Thereby further, recent researchers are working to develop eco-friendly materials for supercapacitor electrode materials by using the bio waste and waste product extracts. In this chapter fully focused on eco-friendly electrode materials for supercapacitors application. Then, the electrode materials synthesis method, characterization, and electrochemical performance are discussed. The electrode materials were categorized into three parts: carbon-based, metal oxide-based, and carbon/metal oxide composite. Furthermore, the future perspectives of electrochemical energy storage devices are addressed.