Ikki qavatli elektr kondansatkichlari (EDLC) yangi energiya saqlash qurilmasi boʻlib, u asosan ikki qavatli va psevdokapasitans zaryadiga bogʻliq. An'anaviy kimyoviy quvvat manbalaridan farqli o'laroq, EDLC is a kind of power source between traditional capacitors and batteries, with advantages such as high power density, short charge and discharge time, long cycle life and wide operating temperature range. Therefore, it can be widely used in different application scenarios such as auxiliary peak power, standby power supply, storage of renewable energy and alternative power supply. It has huge application value and market potential in industrial control, electric power, transportation, intelligent instrument, consumer electronics, national defense, communications, new energy vehicles and many other fields.
In the supercapacitor industry chain, the raw materials of production are mainly positive and negative electrodes/electrolyte and diaphragm. The active electrode material of double layer capacitor is mostly activated carbon, and its production process is as follows: batching → slurry mixing → electrode making → slice cutting → assembly → liquid injection → activation → detection → packaging. The whole process has high technical content and high entry threshold.
Hozirgi vaqtda o'ziga xos sirt maydoni 3000 m2 / g dan ortiq bo'lgan faollashtirilgan uglerod materiallari tayyorlangan, ammo superkondensatorning elektrodi uchun foydalanilganda haqiqiy foydalanish darajasi atigi 30 foizni tashkil qiladi. Shu sababli, hozirgi vaqtda odatda ishlatiladigan AC ning o'ziga xos sirt maydoni taxminan 1500 m2 / g ni tashkil qiladi, odatda 2000 m2 / g dan oshmaydi. Ularning maksimal o'ziga xos sig'imlari 280F/G (oqim elektrolitlari) va 120F/g (-oqim bo'lmagan elektrolitlar) gacha bo'lishi mumkin.
Faollashgan uglerodning o'tkazuvchanligi superkondensatorning zaryad-ajallash samaradorligiga ta'sir qiluvchi muhim omillardan biridir. Faollashgan uglerod materiallari uchun o'tkazuvchanlik sirt maydonining ortishi bilan kamayadi, bir tomondan, material mikroporlari devoridagi faol uglerod miqdori sirt maydonining oshishi bilan kamayadi; Boshqa tomondan, faollashtirilgan uglerod materialining o'tkazuvchanligi faollashtirilgan uglerod zarralari orasidagi aloqa maydoni va faollashtirilgan uglerod zarralari holati bilan chambarchas bog'liq. Elektrolit eritmasi faollashtirilgan uglerod zarralarining teshiklarida va zarralar orasidagi bo'shliqda singdiriladi. Faollashtirilgan uglerod va elektrolitlar o'rtasida to'liq singdirilganmi, kondansatörning o'tkazuvchanligiga katta ta'sir ko'rsatadi. Materialning sirt xarakteristikalari, ayniqsa mikroporlarning gözenek hajmi va teshik chuqurligi, o'tkazuvchanlikni aniqlash uchun muhim omillardir.
Hyuqori o'ziga xos sirt maydoni faollashtirilgan uglerod superkondensatorlar uchun ishlatiladigan asosiy katod materialidir Ayni vaqtda, lekin uning tannarxi mahsulotning umumiy qiymatining qariyb 40-50 foizini tashkil qiladi. Super kondansatör bozorining jadal o'sishi bilan uyda va chet elda super faollashtirilgan uglerodga bo'lgan talab ortib bormoqda.
