Polyoxometalate-Derived Ir/WO x /rGO Nanocomposites for Enhanced Electrocatalytic Water Splitting

Energy & Environmental Materials

article

Bo Huang¹  Yuntian Ma¹  Zhelun Xiong¹  Zicheng Xiao²  Pingfan Wu²  Peng Jiang¹  Minghui Liang¹ 

[1] CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Key Lab Standardization & Measurement Nanotechnology, National Center for Nanoscience and Technology;Institute of POM-based Materials, Hubei University of Technology;University of Chinese Academy of Sciences

关键词: polyoxometalates;    iridium;    electrocatalyst;    water splitting;   

DOI  :  10.1002/eem2.12150

来源: Wiley

【 摘 要 】

Iridium (Ir)-based nanomaterials are promising electrocatalysts for water splitting, and to alleviate their costs as well as improve the performances are always important tasks. Polyoxometalates (POMs) composed of abundant metal, oxygen, and heteroatoms are nanoclusters with defined structures. Benefitting from the inherent advantages of POMs, highly dispersive and “unprotected” Ir nanoparticles originating from Ir-based colloid solution were successfully anchored on POM-derived WO 3 /rGO nanocomposites for the first time. Interestingly, the obtained hybrid material Ir/WO x /rGO delivered improved electrocatalytic performance for water splitting, which is attributed to the addition of only quite small amount of POM derivatives. This work is also the first proof that POM can be employed as precursor to construct metal oxides to support Ir catalysts, providing a new vision for the design of advanced multi-metal electrocatalysts.

【 授权许可】

Unknown