Facile Synthesis of Corn Silk Derived Nanoporous Carbon for an Improved Supercapacitor Performance

Pore Size‐Engineered Three‐Dimensional Ordered Mesoporous Carbons with Improved Electrochemical Performance for Supercapacitor and Lithium‐ion Battery Applications

“…As evidenced from the rate capability profiles in Figure E, CMK‐8 (130) electrode retains a high specific capacitance of 154 F/g among all the materials even at a very high current density of 50 A/g, whereas CMK‐8 (100) and CMK‐8 (150) retains only a capacitance of 120 and 134 F/g, respectively. The Nyquist plots in Figure F, show an inclined line in the low‐frequency region and a semicircle in the high‐frequency warburg region, ascribed to diffusion of electrolyte ions and charge‐transfer resistance, respectively . Though the difference in resistive properties among the three electrodes is minimal, however the inset of the figure reveals the decreasing semicircle for CMK‐8 (130), which suggests a lower internal resistance for ion transport.…”

“…The Nyquist plots in Figure 5F, show an inclined line in the low-frequency region and a semicircle in the high-frequency warburg region, ascribed to diffusion of electrolyte ions and charge-transfer resistance, respectively. [35,36] Though the difference in resistive properties among the three electrodes is minimal, however the inset of the figure reveals the decreasing semicircle for CMK-8 (130), which suggests a lower internal resistance for ion transport. The charge transfer resistance (R ct ) values for CMK-8 (100), CMK-8 (130) and CMK-8 (150) electrodes are determined to be 0.72, 0.34 and 0.51 Ω, respectively.…”

Corn‐based Electrochemical Energy Storage Devices

“…The corn biochar preparation method and modification with different substances have significant influences on the specific surface area (SSA) [75] and the electrochemical performance of the corn biochar. [76][77][78] Corn pyrolysis in the molten salt, [79] microwave irradiation, [80] or the combination of some methods (hybrid carbonization). [81] Chiefly, the biochar needs modifications like chemical modification by potassium hydroxide (KOH) [82,83] to enhance the specific surface area (SSA) and electrochemical properties.…”

“…Several parameters have a significant influence on the carbonization process include the carbonization method, carbonization time, carbonization temperature, carbonization atmosphere, and chemical/physical modifications. The corn biochar preparation method and modification with different substances have significant influences on the specific surface area (SSA) and the electrochemical performance of the corn biochar . Corn pyrolysis in the molten salt, microwave irradiation, or the combination of some methods (hybrid carbonization) .…”

Simple and scalable synthesis of hierarchical porous carbon derived from cornstalk without pith for high capacitance and energy density

“…Currently, biomass has become the most promising carbon source due to its natural abundance, unique structure, renewability and low cost. 14 Numerous biomass materials, such as rice straw, 15 sorghum stalk, 16 hemp stem, 17 bamboo, 18 corn cob, [19][20][21][22] corn husk, 23,24 corn silk, 25,26 corn leaf, 27 corn grains 28 and soybean, 29 have been utilized as carbon precursors to prepare carbon materials for supercapacitors. Especially, cornstalk with an inherent interconnected structure has undoubtedly been an ideal carbon source for HPCs in recent years.…”