This book includes new research results presented at International Conference on Advanced Materials for Sustainable Energy and Environmental Infrastructure (ICAM-SEEi 2025), held during November 26–28, 2025 at IITRAM, Ahmedabad, Gujarat, India. The book covers works from researchers, scientists, engineers, policymakers, and industry leaders. It covers a wide range of interdisciplinary topics, including advanced materials for energy storage and conversion, such as batteries, supercapacitors, fuel cells, and solar energy materials.