Turning biomass waste to a valuable nitrogen and boron dual-doped carbon aerogel for high performance lithium-sulfur batteries

Rational Design of Core‐Shell Structured C@SnO2@CNTs Composite with Enhanced Lithium Storage Performance

“…Moreover, diffraction peaks of S‐2 and SnO 2 @CNTs between 20∼40° (2‐theta degree) are obviously different. The S‐2 appears distinct swell when compared to SnO 2 @CNTs in Figure S1, which confirms the amorphous nature of outer carbon layer …”

“…The S-2 appears distinct swell when compared to SnO 2 @CNTs in Figure S1, which confirms the amorphous nature of outer carbon layer. [47] TG/DSC curves were employed to investigate the loading content of CNTs and pyrolytic carbon in the three samples. As shown in Figure 2a-c, there are three steps for the decomposition of S-1, S-2 and S-3 samples.…”

Recent progress in the conversion of biomass wastes into functional materials for value-added applications

“…These carbon-based materials not only possess high specific surface area, porous structure, and abundant surface functional groups, but also exhibit favorable chemical stability, great performance, and regeneration capacity [ 120 ]. Their scanning electron microscopy (SEM) images are shown in Figure 2 .…”

“…The introduction of interlayer is beneficial to reuse the active compounds during energy storage. Zhu et al [ 146 ] prepared nitrogen and boron dual-doped aerogel (NB-PPCA) from pomelo peel by hydrothermal process, freeze-drying, and pyrolysis process ( Figure 4 ). It was used as an interlayer on pristine separator in Li batteries, and showed superior initial discharge capacity, high specific capacity, and better cyclic stability and rate ability compared to other cells with PPCA separator and pristine separator.…”

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Figure 4. SEM images and elemental mapping of composite materials derived from biomass wastes: (a) silica-loaded biochars from bamboo; and (b) nitrogen and boron dual-doped aerogel from pomelo peel [ 146 , 148 ] (Reproduced by permissions from [ 146 ] and [ 148 ], copyright [2019, Elsevier])

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