We warmly invite you to the 72nd Annual ISE Meeting to be held in Jeju Island, Korea from 29th August to 3th September 2021. Jeju Island is the most popular tourist area in Korea and the venue, the “International Conference Center Jeju (ICC Jeju)” is located at the southern side of the Island. You can enjoy scientific discussion, networking, hiking, and seaside activities during the conference. We previously successfully hosted (2005) the 56th ISE meeting in Busan, Korea and we are sure that the Jeju meeting will be another fruitful and successful conference. The Fall Korean Electrochemical Society (KECS) meeting will be merged into the 72nd Annual ISE Meeting to gather the community into a single conference. The meeting topics will extend from the fundamental understanding of electrochemical sciences to the foremost electrochemical technologies for the products and processes with societal impact. Jeju Island has visa-free entry and may be reached easily from Japan, China, and Taiwan through ten domestic and sixteen international air- routes. We hope you will attend ISE 2021 for its high quality scientific program, its social networking, and will leave with wonderful memories.