A Review on IoT Energy Storage with Nanocarbon Materials: Requirements, State-of-the-Art, Challenges, and Future Scope

The rapid proliferation of the Internet of Things (IoT) has significantly impacted various industries, necessitating advanced energy storage solutions that cater to the diverse needs of IoT applications. Nanocarbon materials have emerged as a promising candidate for IoT energy storage due to their remarkable properties, such as high electrical conductivity, large surface area, and excellent mechanical strength. This review comprehensively examines the requirements, state-of-the-art, challenges, and future scope of IoT energy storage devices incorporating nanocarbon materials. The review begins by highlighting the critical role of energy storage in the IoT landscape and the potential of nanocarbon materials to address these requirements. The discussion proceeds to explore the diverse energy needs of IoT applications, including miniaturization, form factor constraints, battery life, energy efficiency, environmental factors, safety, reliability, and integration with energy harvesting technologies. State-of-the-art nanocarbon materials, such as carbon nanotubes, graphene, carbon nanofibers, fullerene, graphene quantum dots, carbon nanohorns, carbon aerogels, and carbon nano-onions, are thoroughly analyzed, along with their specific applications in various energy storage devices, including supercapacitors, lithium-ion batteries, metal-air batteries, flexible and wearable energy storage devices, energy harvesting systems, hybrid systems, and electrochemical capacitors. The review also provides an insightful comparison and evaluation of the trade-offs among different nanocarbon materials. Furthermore, the review discusses the challenges in implementing nanocarbon materials for IoT energy storage, such as material synthesis and fabrication, device integration and optimization, scalability, safety, reliability, environmental impact, cost-effectiveness, and standardization. In addition, the review presents a forward-looking perspective on the future scope of nanocarbon materials in IoT energy storage, touching upon innovative solutions, recent advancements, ongoing research, interdisciplinary collaboration opportunities, and novel nanocarbon material discoveries. In conclusion, this review offers a comprehensive understanding of the role of nanocarbon materials in IoT energy storage, their current state in the field, and the prospects for future developments. By shedding light on the impact of nanocarbon materials on IoT device performance, efficiency, and sustainability, this review aims to serve as a valuable resource for researchers, engineers, and industry professionals working in the field of IoT energy storage and nanomaterials.