Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 31, No. 10 (October 2018) 1741-1748   

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  CHARACTERISTICS OF PANI/RGO NANOCOMPOSITE AS PROTECTIVE COATING AND CATALYST IN DYE-SENSITIZED SOLAR CELL COUNTER ELECTRODE DEPOSITED ON AISI 1086 STEEL SUBSTRATE
 
N. Sofyan, R. A. Nugraha, A. Ridhova, A. H. Yuwono and A. Udhiarto
 
( Received: February 24, 2018 – Accepted in Revised Form: April 26, 2018 )
 
 

Abstract    One of the possibilities to mass-produce dye-sensitized solar cell (DSSC) device is if it could be embedded to the area atop metal roof. However, the use of metal substrate is constrained by the corrosion caused by the electrolyte solution used in the DSSC device such as iodide/tri-iodide (I-/I3-). In this study, we propose the utilization of polyaniline/reduced graphene oxide (PANi/rGO) nanocomposite as protective coating and at the same time as catalyst for the DSSC counter electrode on AISI 1086 steel substrates. The work was started by synthesizing PANi and rGO and assembling the PANi/rGO nanocomposite in a DSSC device. The characterization was performed using X-ray diffraction (XRD) for crystal structure, infrared (FTIR) for functional groups, scanning electron microscope (SEM) for surface morphology, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) for corrosion testing, and semiconductor parameter analyzer (SPA) for the DSSC device performance. The result showed that the decrease of corrosion rates in AISI 1086 steel was proportional to the rGO concentrations in PANi/rGO nanocomposites. The lowest corrosion rate was obtained at the highest rGO composition, i.e. PANi/rGO 8 wt% with corrosion rate (CR) of 0.2 mm/year and protection efficiency of 80.3 %. The DSSC performance test revealed that PANi/rGO composite could be used as an alternative catalyst for I-/I3- based redox electrolyte in the DSSC solar cell applications in replacement for platinum. The highest power conversion efficiency of 5.38 % was obtained from PANi/rGO 4 wt%.

 

Keywords    AISI 1086 steel, Dye-sensitized Solar Cell counter electrode, Polyaniline, Protective coating, Reduced graphene oxide

 

چکیده   

یکی از امکاناتی که برای تولید سلولهای خورشیدی با حساسیت رنگی (DSSC) تولید می شود، این است که آیا می توان آن را به محفظه ای در پشت سقف فلزی جاسازی کرد. با این حال، استفاده از بستر فلزی توسط خوردگی ناشی از محلول الکترولیت مورد استفاده در دستگاه DSSC مثل یدید/تریدید (-I-/I3) محدود شده است. در این مطالعه، استفاده از نانوکامپوزیت گرافین پلی آنیلین / کاهش گرافیتی (PANi / rGO) را به عنوان پوشش محافظتی و در همان زمان به عنوان کاتالیزور برای الکترود ضد DSSC در زیرزمین فولاد AISI 1086 پیشنهاد می کنیم. این کار با تلفیق PANi و rGO و جمع آوری نانوکامپوزیت PANi / rGO در یک دستگاه DSSC آغاز شد. مشخصه ها با استفاده از پراش اشعه ایکس (XRD) برای ساختار کریستال، مادون قرمز (FTIR) برای گروه های کاربردی، میکروسکوپ الکترونی اسکن (SEM) برای مورفولوژی سطح، پلاریزاسیون پتانسیودینامیکی و طیف سنجی امپدانس الکتروشیمیایی (EIS) برای آزمایش خوردگی و پارامتر نیمه هادی تجزیه کننده (SPA) برای عملکرد دستگاه DSSC. نتایج نشان داد که کاهش میزان خوردگی فولاد AISI 1086 متناسب با غلظت rGO در نانوکامپوزیتهای PANi / rGO بود. کمترین میزان خوردگی در بالاترین ترکیب rGO بدست آمد، به عنوان مثال ٪ PANi / rGO 8 wtبا نرخ خوردگی (CR) 2/0 میلی متر در سال و راندمان حفاظت 3/80 درصد است. تست عملکرد DSSC نشان داد که کامپوزیت PANi / rGO می تواند به عنوان یک کاتالیزور جایگزین برای الکترولیت Redox بر اساس -I-/I3 در DSK های سلول خورشیدی در جایگزینی پلاتین استفاده شود. بیشترین بازده تبدیل قدرت از 38/5٪ از ٪ PANi / rGO 4 wt بدست آمد.

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