用于超低过电势锂-氧电池的超精细 Ru 基电催化剂的势控结构。
potential-regulated architecture of an ultrafine Ru-based electrocatalyst for ultralow overpotential lithium-oxygen batteries.
机构信息
Future Energy Laboratory, School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China.
School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China.
出版信息
Chem Commun (Camb). 2023 May 11;59(39):5926-5929. doi: 10.1039/d3cc00589e.
An electrochemical reduction strategy is proposed to avoid the aggregation of nano-Ru in lithium batteries for the first time. The high-dispersion face-centered cubic (fcc) nano-Ru is successfully synthesized with an average diameter of 2.0 nm, and the as-assembled lithium-oxygen batteries deliver an excellent cycling performance of 185 cycles and an ultralow overpotential of only 0.20 V at 100 mA g.
首次提出了一种电化学还原策略来避免纳米 Ru 在锂电池中的聚集。成功合成了具有平均直径为 2.0nm 的高分散面心立方(fcc)纳米 Ru，组装后的锂-氧电池在 100mA/g 的电流密度下具有优异的循环性能，达到 185 圈，超电势仅为 0.20V。
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