GdBaCo2O5+δ钙钛矿氧化物双功能催化剂的制备及电化学性能研究
Catalytic and electrochemical properties of GdBaCo2O5+δ as bifunctional catalyst
动力学过程缓慢一直以来都是制约金属-空气电池商业化进程的重要因素之一，因此，寻求更高效的氧还原和氧析出反应双功能催化剂至关重要。本文通过辅助溶胶-凝胶法成功制备出GdBaCo2O5+δ（GBCO）双钙钛矿氧化物，并且在旋转圆盘电极（RDE）测试中表现出优秀的ORR和OER催化活性。此外，将其作为锂空气电池阴极进行电池性能测试的结果表明，在200mAg-1的恒电流密度下，电池的初始放电容量高达5995mAhg-1，循环效率高达81%，并且在循环40圈之后仍能保持稳定的充放电容量，展示出优异的催化活性和循环稳定性。
eveloping efficient bifunctional catalyst for the oxygen reduction and evolution reactions plays the triggers of the commercial process of metal-air battery because of the sluggish kinetics of these two reactions. Herein, GdBaCo2O5+δ (GBCO) have been synthesized by auxiliary sol-gel method. The rotating-disk electrode (RDE) results show that the as-prepared GBCO exhibits excellent ORR and OER catalytic activities. Interestingly, when employed as a cathode for Li-air batteries, it demonstrates superior bifuctional catalytic activities, with high initial discharge capacity of 5995 mAh g?1, a relatively high round-trip efficiency of 81% and cycle stability of sustaining 40 cycles at a high discharge current density of 200 mA g-1.
王章俊、罗勇、杨瑞枝、金超
电化学工业
能源储存和转化双功能催化剂氧还原氧析出锂空气电池
Energy storage and conversionbifunctional catalystsoxygen reduction reactionoxygen evolution reactionLi-air battery
王章俊,罗勇,杨瑞枝,金超.GdBaCo2O5+δ钙钛矿氧化物双功能催化剂的制备及电化学性能研究[EB/OL].(2017-03-03)[2025-08-10].http://www.paper.edu.cn/releasepaper/content/201703-40.点此复制
评论