Cheng Junfang, Jiang Yuexing, Zou Lu, Zhang Ming, Zhang Guozhu, Wang Ziling, Huang Yizhen, Chi Bo, Pu Jian, Jian Li
Center for Fuel Cell Innovation Huazhong University of Science and Technology Wuhan 430074 China.
International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) Kyushu University 744 Moto-oka Nishi-ku Fukuoka 819-0395 Japan.
ChemistryOpen. 2019 Feb 14;8(2):206-209. doi: 10.1002/open.201800247. eCollection 2019 Feb.
Li-O batteries (LOBs) with an extremely high theoretical energy density have been reported to be the most promising candidates for future electric storage systems. Porous catalysts can be beneficial for LOBs. Herein, 3D-ordered macroporous LaSrCoFeO perovskite oxides (3D-LSCF) are applied as cathode catalysts in LOBs. With a high Brunauer-Emmett-Teller surface area (21.8 m g) and unique honeycomb-like macroporous structure, the 3D-LSCF catalysts possess a much higher efficiency than LaSrCoFeO (LSCF) nanoparticles. The unique 3D-ordered macropores play a significant role in the product deposition as well as oxygen and electrolyte transmission, which are crucial for the discharge-charge processes of LOBs.
据报道，具有极高理论能量密度的锂-氧电池（LOBs）是未来蓄电系统最有前景的候选者。多孔催化剂对锂-氧电池可能有益。在此，三维有序大孔钙钛矿氧化物LaSrCoFeO（3D-LSCF）被用作锂-氧电池的阴极催化剂。3D-LSCF催化剂具有高比表面积（21.8 m²/g）和独特的蜂窝状大孔结构，其效率比LaSrCoFeO（LSCF）纳米颗粒高得多。独特的三维有序大孔在产物沉积以及氧气和电解质传输中起着重要作用，这对锂-氧电池的充放电过程至关重要。
