Enhanced Cycle Performance of Rechargeable Li-CO 2 Batteries Using Nanostructured AMn 2 O 4 (A = Ni, Zn, Co) Electrocatalysts

作者：Jianda Wang, Xiao‐Dong Zhou, Shuya Wei · 发表于：ACS Applied Materials & Interfaces · 年份：2025 · DOI：10.1021/acsami.4c10764 · 被引用次数：10 · 研究领域：Advanced Battery Materials and Technologies、Advancements in Battery Materials、Advanced battery technologies research

Rechargeable Li-CO 2 batteries face challenges of sluggish reaction kinetics and poor rechargeability. Highly efficient electrocatalysts are urgently needed to decompose the discharge product, Li 2 CO 3 . Mn-based transition metal oxides are regarded as promising candidates for improving the cycle performance and reaction kinetics of Li-CO 2 batteries. Notably, morphology engineering plays a vital role in enhancing electrocatalytic performance by tuning the structure of the electrode. Herein, we adopted a morphology engineering strategy to develop nanostructured Mn-based electrocatalysts with high surface area and rich active sites. The nanostructured electrocatalysts were synthesized using a facile anodic electrodeposition method by depositing Mn-based hydroxides directly onto a carbon cloth electrode, followed by a calcination process. The electrochemical characterization showed that the Li-CO 2 battery with Mn-based transition metal oxides AMn 2 O 4 (A = Ni, Zn, Co) achieves impressive cycle performance (over 150 cycles at 100 mA/g). This work not only exhibits the excellent electrocatalytic performance of Mn-based transition metal oxide but also demonstrates a general selection principle for next-generation electrocatalysts for metal-CO 2 batteries.