Generalised predictability in the synthesis of biocarbons as clean energy materials: targeted high performance CO₂ and CH₄ storage

Abstract

This work shows how knowledge of any biomass and choice of carbonisation process can offer a generalised route to predictability in the preparation of activated biocarbons. We demonstrate that based...

Direct synthesis of organic salt-derived porous carbons for enhanced CO2 and methane storage

“…This indicates that the organic salt derived carbons are able to achieve comparatively high packing density relative to their overall porosity, which is beneficial in optimising volumetric surface area (Table 2) and more importantly volumetric gas uptake. 9,24,26 Interestingly, both surface area density and volumetric surface area increase with carbonisation temperature (and consequently overall porosity), which we ascribe to the fact that the extent of microporosity does not diminish as total porosity rises at higher carbonisation temperatures. This is the reverse of what is typically observed for conventional activated carbons and most other porous materials including MOFs.…”

“…, the ratio of total surface area to total pore volume, is related to the ratio of microporosity to mesoporosity, and that it may be used to predict the packing density of a porous carbon. 9,24,26 As shown in Table 2, the SAD of the PPI-T-2 carbons is in the narrow range of 1917–2127 m 2 cm −3 , and which is generally higher than for most activated carbons. 27–30,33 Given the relatively high SAD, the expectation is that the PPI-derived carbons would have high packing density.…”

“…26–30 The nominal O content is low compared to that of activated carbons especially for samples prepared at 800 °C and above. 2–22,26–30 The consequence of this is that at carbonisation temperature of 800 °C and above, the PPI-derived carbons may be considered as being comparatively C-rich (and O-poor) resulting in lower O/C ratio than for KHP-derived carbons and conventional activated carbons in general. 11,22–24,26–30 The carbonisation yield ( i.e.…”

“…[1][2][3][4][5]9,24,26,[57][58][59][60][61][62] The performance of the PPIderived carbons is comparable to that of the best-performing porous carbons to date, i.e., activated carbons derived from date seeds (Phoenix dactylifera) or cloves, which store up to 222 or 235 cm 3 (STP) cm −3 , respectively, at 25 °C and 35 bar. 9,26 The performance of the PPI-derived carbons is comparable to the best MOF reported to date, i.e., mono HKUST-1, which can store 224 cm 3 (STP) cm −3 at 25 °C and 35 bar. 63 mono HKUST-1, which exists in monolithic form, is reported to have packing density of 1.06 g cm −3 and is considered to be the benchmark material for volumetric methane storage in MOFs materials.…”

A multifunctional paper-based supercapacitor with excellent temperature adaptability, plasticity, tensile strength, self-healing, and high thermoelectric effects

“…Among them, paperbased materials, as a derivative product derived from biomass materials, not only have some advantages of biomass materials but also have good exibility and integrity with potential as excellent energy storage materials. [23][24][25][26] Many researchers have used paper-based materials for energy storage research and have also achieved a series of good research results. Currently, paper-based materials are used as exible substrates in the eld of energy storage.…”