In 2022,Gui, Fukang; Jin, Qiu; Xiao, Dongdong; Xu, Xiaobin; Tan, Qinggang; Yang, Daijun; Li, Bing; Ming, Pingwen; Zhang, Cunman; Chen, Zheng; Siahrostami, Samira; Xiao, Qiangfeng published an article in Small. The title of the article was 《High-Performance Zinc-Air Batteries Based on Bifunctional Hierarchically Porous Nitrogen-Doped Carbon》.Application In Synthesis of 2,6-Diaminopyridine The author mentioned the following in the article:
Active and durable bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) on the cathode are required for high-performance rechargeable metal-air batteries. Herein, the synthesis of hierarchically porous nitrogen-doped carbon (HPNC) with bifunctional oxygen electrocatalysis for Zn-air batteries is reported. The HPNC catalyst possesses a large surface area of 1459 m2 g-1 and exhibits superior electrocatalytic activity toward ORR and OER simultaneously with a low OER/ORR overpotential of 0.62 V, taking the difference between the potential at 10 mA cm-2 for OER and half-wave potential for ORR in 0.1 M KOH. Adopting HPNC as the air cathode, primary and rechargeable Zn-air batteries are fabricated. The primary batteries demonstrate a high open-circuit potential of 1.616 V, a specific capacity of 782.7 mAh gZn-1 and a superb peak power d. of 201 mW cm-2. The rechargeable batteries can be cycled stably for over 360 cycles or 120 h at the c.d. of 5 mA cm-2. As elucidated by d. functional theory, N-doping is preferred on defective sites with pentagon configuration and on the edge in the form of pyridinic-N-type. The high content of these two motifs in HPNC leads to the superior ORR and OER activities, resp. In the experiment, the researchers used 2,6-Diaminopyridine(cas: 141-86-6Application In Synthesis of 2,6-Diaminopyridine)
2,6-Diaminopyridine(cas: 141-86-6) belongs to pyridine. Pyridine and its simple derivatives are stable and relatively unreactive liquids, with strong penetrating odours that are unpleasant.Application In Synthesis of 2,6-Diaminopyridine