DOI: 10.1002/adma.202307790 ISSN: 0935-9648

Accelerated Confined Mass Transfer of MoS2 1d Nanotube in Photo‐Assisted Metal−Air Batteries

Shuang Liang, Li‐Jun Zheng, Li‐Na Song, Xiao‐Xue Wang, Wen‐Bin Tu, Ji‐Jing Xu
  • Mechanical Engineering
  • Mechanics of Materials
  • General Materials Science


Applying the solar energy into energy storage battery systems is challenged in achieving green and sustainable development, however, the efficient progress of photo‐assisted metal−air batteries is restricted by the rapid recombination of photogenerated electrons and holes upon the photocathode. Herein, a one‐dimensional ordered MoS2 nanotube (MoS2‐ONT) with confined mass transfer can be used to extend the lifetime of photogenerated carriers, which is capable of overcoming the challenge of rapid recombination of electron and holes. The tubular confined space can not only promote the orderly separation and migration of charge carriers, but also realize the accumulation of charge and the rapid activation of oxygen molecules. The concave surface of MoS2‐ONT can improve the carrier separation ability and prolong the carrier lifetime. Meanwhile, the ordered tubular confined space can effectively realize the rapid transfer of charge, ion and oxygen. Under light irradiation, a fast ORR kinetic of 70 mW cm−2 for photo‐assisted Zn−air battery is achieved, which is the highest value reported for photo‐assisted Zn−air batteries. Significantly, the photo‐assisted Li−O2 battery based on MoS2‐ONT also shows superior rate capability and other exciting battery performance. This work shows the universality of the confined carrier separation strategy in photo‐assisted metal−air batteries.

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