This book comprehensively reviews environmental issues related to electrochemical energy technologies. Fundamental science of electrochemical engineering and environmental engineering will be introduced. It also provides an understanding of the technologies and their impact on environment, helping readers develop more environmentally friendly designs. Major environmental issues related to electrochemical energy such as used batteries will be reviewed. State-of-the-art technical information and effective strategies about electrochemical energy and environment will be provided to readers at all academic levels.