Nano‐Sized Au Particle‐Modified Carbon Nanotubes as an Effective and Stable Cathode for Li−CO<sub>2</sub> Batteries
Yulong Kong, Hao Gong, Li Song, Cheng Jiang, Tao Wang, Jianping He
Abstract
Abstract Lithium‐carbon dioxide (Li−CO 2 ) batteries show a great potential in the fields of CO 2 fixation and energy storage, and moreover the research of Li−CO 2 batteries is of great significance to the practical application of Lithium‐air (Li‐air) batteries. However, the sluggish kinetics and high charging potential causing by the wide band gap insulator Li 2 CO 3 make it extremely important to research cathode catalysts that can promote the decomposition of Li 2 CO 3 and reduce the charge potential. Here, we prepared a composite of Au nanoparticles uniformly distribute on carbon nanotubes (CNTs) network (AuNPs/CNTs) as an efficient cathode catalyst. Benefitted by the small sized Li 2 CO 3 which is easier to decompose during charge process, the AuNPs/CNTs‐based batteries exhibit a high specific capacity of 6399 mAh g −1 , a low overpotential of 1.53 V and a stable cycling performance of 46 cycles, demonstrating the conspicuous catalytic performance of AuNPs/CNTs.