Hetero-coupling of a carbonate hydroxide and sulfide for efficient and robust water oxidation
Tang Tang, Wen-Jie Jiang, Shuai Niu, Lu-Pan Yuan, Jin-Song Hu, Li-Jun Wan
JOURNAL OF MATERIALS CHEMISTRY A | ROYAL SOC CHEMISTRY | Published : 2019
Cost-effective oxygen evolution reaction (OER) catalysts with both superb activity and stability are crucial for practical electrocatalytic water splitting. We herein come up with a metal carbonate hydroxide and metal sulfide (MS/MCH) heterostructure via in situ generating MS on MCH to tackle the conflict between activity and durability. The heterostructure in a unique "nanoparticle-in-nanosheet" configuration features abundant hetero-interfaces between MS and MCH, allowing for effective electron transfer from the antibonding orbital of M-S in MS to M-O in MCH and thus improving the stability of sulfides during water oxidation. Simultaneously, such coupling is able to modulate the electronic..View full abstract
Awarded by National Key Research and Development Program of China
Awarded by National Natural Science Foundation of China
Awarded by National Postdoctoral Program for Innovative Talents
We acknowledge the financial support from the National Key Research and Development Program of China (2016YFB0101202), the National Natural Science Foundation of China (21773263 and 91645123), and the National Postdoctoral Program for Innovative Talents (BX201700250). We also thank Dr Z.-J. Zhao, X.-Y. Zhang, Y. Sun, Dr B. Guan, and J.-L. Yue for their help in XPS and XRD analysis and SEM and TEM support.