4 research outputs found
ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²Π»ΠΈΡΠ½ΠΈΡ Π½Π°Π»ΠΎΠΆΠ΅Π½ΠΈΡ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ ΠΈ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡΠΎΠ² Π½Π° Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΠ°ΠΆΠΈ, ΠΎΠ±ΡΠ°Π·ΡΡΡΠ΅ΠΉΡΡ Π² ΠΏΡΠΎΠΏΠ°Π½ - Π²ΠΎΠ·Π΄ΡΡΠ½ΠΎΠΌ ΠΏΠ»Π°ΠΌΠ΅Π½ΠΈ
Π ΠΏΡΠ΅Π΄Π»Π°Π³Π°Π΅ΠΌΠΎΠΉ ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π²Π»ΠΈΡΠ½ΠΈΡ Π²Π½Π΅ΡΠ½ΠΈΡ
Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΉ Π½Π° Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΠ°ΠΆΠΈ, ΠΎΠ±ΡΠ°Π·ΡΡΡΠ΅ΠΉΡΡ Π² ΠΏΡΠΎΠΏΠ°Π½ - Π²ΠΎΠ·Π΄ΡΡΠ½ΠΎΠΌ ΠΏΠ»Π°ΠΌΠ΅Π½ΠΈ. ΠΡΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΡΠ°ΠΆΠΈ Π½Π° Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΠΎΡΡΡ Π±ΡΠ»ΠΎ ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½ΠΎ, ΡΡΠΎ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΏΠΎΠ»Π΅ ΠΈ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡ ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎ Π²Π»ΠΈΡΡΡ Π½Π° Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΠΎΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠΉ ΡΠ°ΠΆΠΈ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ Π½Π°Π»ΠΎΠΆΠ΅Π½ΠΈΠΈ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ ΠΈ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡΠ° Π½Π° ΠΏΠ»Π°ΠΌΡ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π²ΡΠ°ΡΡΡ ΡΠ°ΠΆΠ° ΠΈΠΌΠ΅Π΅Ρ ΡΡΠΏΠ΅ΡΠ³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π°, Ρ.Π΅. ΡΠ³ΠΎΠ» ΡΠΌΠ°ΡΠΈΠ²Π°Π½ΠΈΡ ΡΠΎΡΡΠ°Π²Π»ΡΠ» 152-153Β°. ΠΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ ΠΈ ΠΊΠ°ΡΠ°Π»ΠΈΠ·Π°ΡΠΎΡΠ° Π½Π° Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠΉ ΡΠ°ΠΆΠΈ ΠΌΠΎΠΆΠ½ΠΎ ΠΎΠ±ΡΡΡΠ½ΠΈΡΡ Π½Π°Π»ΠΈΡΠΈΠ΅ΠΌ Π½Π°Π½ΠΎΡΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΡΡΠΊΡΡΡ ΠΈ ΠΈΡ
Π±Π»ΠΈΠ·ΠΊΠΈΠΌ ΡΠ°ΡΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π΄ΡΡΠ³ ΠΎΡ Π΄ΡΡΠ³Π°. ΠΠ»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ»Π½ΠΎΠΉ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ ΠΎ ΡΡΡΡΠΊΡΡΡΠ΅ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½Π°Ρ ΡΠ°ΠΆΠ° Π±ΡΠ»Π° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π° ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ (ΠΊΠΎΠΌΠ±ΠΈΠ½Π°ΡΠΈΠΎΠ½Π½ΠΎΠ΅ ΡΠ°ΡΡΠ΅ΡΠ½ΠΈΠ΅ ΡΠ²Π΅ΡΠ°, ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½Π°Ρ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΡ)
Modification of Biomass-Derived Nanoporous Carbon with Nickel Oxide Nanoparticles for Supercapacitor Application
Supercapacitors are one of the promising devices for the accumulation and storage of electrical energy. The purpose of this study is to develop a synthesis and modification method of carbon material to improve the electrochemical characteristics of a supercapacitor. In the proposed study, by varying the sequence and parameters of the processes of carbonization, mechanoactivation and thermochemical activation, the conditions for obtaining nanoporous carbon with a specific surface area of 2200 (Β±50) m2/g from walnut shells (WSs) are optimized. In addition, to increase the electrochemical efficiency of the electrode material, the resulting nanoporous carbon was modified with nickel oxide (NiO) nanoparticles by the thermochemical method. It is shown that the modification with nickel oxide nanoparticles makes it possible to increase the specific capacitance of the supercapacitor electrode by 16% compared to the original unmodified nanoporous carbon material
Preparation of Nanoporous Carbon from Rice Husk with Improved Textural Characteristics for Hydrogen Sorption
This study proposes a method to control the pore-forming process by performing preliminary mechanical activation of the initial rice husk before carbonization. Preliminary mechanical activation of the initial rice husk leads to the loosening of the intercellular substance and its partial depolymerization, thereby increasing the availability of its internal structure for pore formation during carbonization and chemical activation. Using the method described above, nanoporous carbon was obtained with a BrunauerβEmmettβTeller (BET)-calculated specific surface area of 2713 m2/g, a micropore specific surface area calculated by using the DubininaβRadushkevich (D-R) method of 3099 m2/g, and a total pore volume calculated by using the BarettβJoynerβHalenda (BJH) method of 1.625 cm3/g. Due to these characteristics, the adsorption capacity in the obtained sample was for hydrogen 3.7 wt.% at a temperature of β190 Β°C and a pressure of 9 kgf/cm2, which is 29.7% higher than the adsorption capacity of nanoporous carbon obtained based on rice husk without mechanical activation. The composite βcarbonβplatinumβ NC-2/Pt10%, at a temperature of 20 Β°C and a pressure of 9 kgf/cm2, showed an increase in sorption capacity of 27% compared to pure nanoporous carbon NC-2, which is explained by the emergence of the spillover effect