Constructing Double Heterojunctions on 1T/2H‑MoS2@Co3S4 Electrocatalysts for Regulating Li2O2 Formation in Lithium‑Oxygen Batteries (IMAGE)
Caption
- 1T/2H-MoS2@Co3S4 electrocatalysts were constructed by interfacial charge donation from Co to Mo atoms, resulting in formation of double heterojunctions including 1T-MoS2@Co3S4 and 2H-MoS2@Co3S4.
- Complementary effect from double heterojunctions not only triggered fast charge transport on Co–S–Mo couplings, but also enabled moderate eg orbital occupancy to adsorb oxygen-containing intermediates for efficient oxygen electrocatalysis.
- Optimal adsorption energies for solution and surface dual reaction pathways were achieved, forming two kinds of discharge product morphologies during cycling to enhance performance of Li–O2 batteries.
Credit
Yichuan Dou, Zhuang Liu, Lanling Zhao*, Jian Zhang, Fanpeng Meng, Yao Liu, Zidong Zhang, Xingao Li, Zheng Shang, Lu Wang, Jun Wang*.
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CC BY-NC-ND