양천모 한학수 최운혁 조병원 조원일 윤경석 2024-01-21T06:00:59Z 2024-01-21T06:00:59Z 2021-09-06 2004-12 0304-128X https://pubs.kist.re.kr/handle/201004/136958 Capacitive deionization(CDI) process kinds of electrochemical adsorption method was employed in order to solve the water deficient problems. In our study, porous activated carbon-silica gel composite electrodes with high wet-ability and mechanical strengths are invented by paste rolling method in our laboratory and investigated electrochemical characteristics such as current changed values as a function of time, coulombs, specific coulombs and chargedischarge efficiencies as a function of cycles until 10th and 100th cycles in 1,000 ppm NaCl solution. Porous activated carbon-silica gel composite electrodes showed efficient CDI performances with decreasing active material usages and increasing wet-ability, mechanical strengths in NaCl solutions. In our electrochemical runs, all of the activated carbonsilica gel composite electrodes also showed good cyclic-ability without destroy of active materials during cycles. The electrode-manufacturing times decreased by 50%. Average specific charge-coulombs by 100th cycles are also appeared very higher 0.456(C composite electrode) than 0.317 (A·min.)/g(A electrode). The charge-discharge efficiencies by 100th cycles are showed good cycle-ability and appeared over 73% and 75.6% in case of A electrode and C composite electrode. However, at the 100th cycles, 76% of charge-discharge efficiencies is showed in C composite electrode but 66% of charge-discharge efficiencies is showed in A electrode. 한국화학공학회 다공성 활성탄소-실리카젤 복합전극의 전기용량적 탈이온 공정에의 응용 Applications of Porous Activated Carbon-Silica Gel Composite Electrodes for Capacitive Deionization Process Article 2 Korean Chemical Engineering Research(HWAHAK KONGHAK), v.42, no.6, pp.748 - 753 Korean Chemical Engineering Research(HWAHAK KONGHAK) 42 6 748 753 kci ART000945490 Porous Activated Carbon-Silica Gel Composite Electrodes Capacitive Deionization Activated Carbon