In 2022,Zhang, Qingtang; Zhang, Ya; Lian, Fei; Xu, Zongqiang; Wang, Xiaomei published an article in Ionics. The title of the article was 《Synthesis and lithium storage properties of nitrogen-containing hard carbon from conjugated microporous polymers》.Reference of 2,5-Dibromopyridine The author mentioned the following in the article:
Two kinds of hard carbons with controllable nitrogen contents (N1HC and N2HC) were prepared from 2,5-dibromopyridine and 2,5-dibromopyrazine, resp. The nitrogen contents of N1HC and N2HC are 3.75 wt% and 5.08 wt%, resp. The pore structure of N2HC was further improved by KOH activation and the activated N2HC is designated as N2HC-K. The sp. surface area of N2HC-K is considerable 1328.3 m2 g-1, which is distinctly higher than that of N2HC. The rich nitrogen content and developed pores make N2HC-K afford a high lithium storage capacity, rate performance, and excellent cycling performance. The initial reversible capacity of N2HC-K is 604.8 mAh g-1 at a c.d. of 0.1 A g-1. The specific capacity of N2HC-K after 500 cycles at 0.6 A g-1 is still as high as 488.2 mAh g-1. In the experiment, the researchers used 2,5-Dibromopyridine(cas: 624-28-2Reference of 2,5-Dibromopyridine)
2,5-Dibromopyridine(cas: 624-28-2) belongs to pyridine. When pyridine is adsorbed on oxide surfaces or in porous materials, the following species are commonly observed: (i) pyridine coordinated to Lewis acid sites, (ii) pyridine H-bonded to weakly acidic hydroxyls, and (iii) protonated pyridine. At high coverage, physisorbed pyridine and protonated dimers can also be observed.Reference of 2,5-Dibromopyridine