In
the present exploration, a few Si–B–N derivatives
are derived to adsorb Li ions and CO
2
gas molecules for
the potential application of metal–air batteries. The newly
derived structure’s bond lengths are as follows: Si=Si,
2.2 Å; Si–B, 1.9 Å; Si–N, 1.7 Å; and
B–N, 1.4 Å, consistent with the experimental results of
relevant structures. The stability of the newly derived structures
is examined by the atom-centered density propagation study by varying
the temperature from 270 to 400 K, and no structural variations are
observed throughout the dynamics. Li adsorption on the Si
4
B
2
ring has the maximum binding energy of −3.9
eV, and the result is consistent with the previous results. The rings
with the 2:1 silicon–boron ratio provide strong adsorption
for Li atoms. The calculated maximum electromotive force of the newly
derived sheets is 0.56 V with the maximum theoretical density of 783
Wh/kg. Similarly, the maximum adsorption of CO
2
on the
sheet is −0.106 eV, which is considerably higher than that
on graphene and its derivatives. CO
2
adsorption has been
carried out in the presence of water molecules to investigate the
change in CO
2
adsorption with the moisture (water) content,
and the results show no significant change in the adsorption of CO
2
with moisture. However, water has a strong interaction with
the maximum interaction energy of −0.72 eV. Further, to explore
the potential ability of the sheets, each sheet’s edges are
examined as hydrogen storage expedient and the surface as an artificial
photosynthesis platform. The Si
4
B
2
ring is more
favorable for the adsorption of H atom with the chemisorption of −7.138
eV. Similarly, all of the major UV-absorption spectral peaks fall
between 450 and 800 nm, which shows that the sheet can be used as
an artificial photosynthesis platform.