The energy conversion between electricity and chemistry represents a promising pathway for harvesting environment friendly and renewable energy. For instance, renewable energy harvested from solar or wind are plentiful but tends to be intermittent and unpredictable, while the associated electrical energy can be potentially stored as chemical energy through electrolysis strategy. On the other hand, the energy stored in chemical bond can be released in an environmental friendly manner through a fuel cell or battery system. One of the most critical tasks to implement these kinds of conversion is to develop high-activity and durable electrocatalysts to facilitate reactions at anode and cathode in the related energy conversion devices. Research topics in our group mainly include the design and synthesis of functional nanostructures and exploration their applications in fields of hybrid electrochemical energy conversion and storage system, majorly focusing on electrosynthesis and hybrid Li⁺/Na⁺ batteries.