A microporous carbon derived from phenol–melamine–formaldehyde resin by K2CO3 activation for lithium ion batteries

N-doped monolithic carbon aerogel electrodes with optimized features for the electrosorption of ions

“…1600 cm À1 is assigned to a Raman-allowed E 2g resulting from 'in plane' displacement of the carbons strongly coupled in the hexagonal sheets. The prevalence of these two modes belonging to sp 2 phases is explained as a result of the large polarizability of the conjugated p bonds at the sp 2 sites [33]. A careful decomposition of the spectra reveals two additional gaussian components.…”

Mesoporous wormholelike carbon with controllable nanostructure for lithium ion batteries application

“…3 shows the first and second charge/discharge profiles of the samples at a current density of 0.05 A g À1 . All of the samples show a plateau between 0.9 and 0.5 V and a large irreversible capacity in the first discharge/charge cycle, which are common phenomena for carbon materials, especially for hard carbon [4,19,21,[35][36][37]. The large irreversible capacity is originated from the formation of the SEI layer [4,21,35,37].…”

“…Lithium-ion batteries (LIBs) have become increasingly popular over the last two decades due to their high energy density and long cycle life [1][2][3][4][5]. The performance of the LIBs is closely related to the electrode and electrolyte materials utilized.…”

“…Nanostructure carbons, such as carbon nanotube, ordered mesoporous carbon, carbon aerogel, fullerene-like carbon nitride and graphene, are indispensable and irreplaceable in modern science due to their stable physical-chemistry property, well-defined nanomorphology [2,4,8,12] and especially varying density of dangling bonds on their surface, which can influence reactivity, forming different functionalities [12][13][14][15][16]. Among them, porous carbon materials (PCMs) with developed pore structure have received much attention as anode materials for LIBs because of one aspect: their macro/meso-pores can provide fast mass transport pathway, shortening the distance for Li + diffusion in carbon matrix, and their high surface area offers more active sites for Li + storage reaction [2,4,8,[17][18][19][20][21].…”

“…Among them, porous carbon materials (PCMs) with developed pore structure have received much attention as anode materials for LIBs because of one aspect: their macro/meso-pores can provide fast mass transport pathway, shortening the distance for Li + diffusion in carbon matrix, and their high surface area offers more active sites for Li + storage reaction [2,4,8,[17][18][19][20][21]. Excessive increase of surface area, however, often causes a huge increase of the microporosity and/or narrows/destroys mesopores [22][23][24].…”