The increasing concerns on severe environmental issues and rapid fossil fuel depletion stimulate the intensive interests in renewable and sustainable energy sources. Fuel cells and electrochemical water splitting is considered as one of ideal options to feed energy demand without environmental concerns. The commercialization of these techniques requires the efficient, low-cost and durable electrocatalysts for oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), and oxygen evolution reaction (OER).<br/>The catalytic performance of these electrocatalysts are closely related to the intrinsic activity and the number of the accessible catalytic sites in the electrocatalysts. This presentation will focus on the exploration of earth-abundant efficient ORR, HER and OER electrocatalysts with an emphasis on the performance boosting by synergistically electronic and structural engineering. Several reasonable ways will be introduced for rationally engineering the morphological structure, electronic structure, and crystalline structure of electrocatalysts to augment the accessible catalytic sites and synergistically boost their intrinsic activity, thus leading to the significant performance enhancement of these low-cost materials for practical applications. These results will open opportunities for the rational design and bottom-up synthesis of cost-effective and high-performance electrocatalysts for fuel cells and sustainable hydrogen production through electrochemical water splitting.

Electronic and structural engineering of active sites for efficient non-precious metal electrocatalysts

256th National Meeting (2018)

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