文章信息/Info

Title:

Application of pyrolytic carbon derived from carbonized-biomass in AD/DSSCs

作者:

方雯;  云斯寧;  黃欣磊;  后玉芝;  朱江;  李雪

西安建筑科技大學(xué)材料與礦資學(xué)院

Author(s):

FANG Wen;  YUN Sining*;  HUANG Xinlei;  HOU Yuzhi;  ZHU Jiang;  LI Xue

Functional Materials Laboratory (FML), School of Materials & Mineral Resources, Xi’an University of Architecture and Technology

關(guān)鍵詞:

生物質(zhì)碳化; 厭氧發(fā)酵; 染料敏化太陽能電池; 對電極; 促進劑

Keywords:

Biomass carbonization;  Anaerobic digestion;  Dye-sensitised solar cells;  Counter electrode;  Accelerants

DOI:

10.7502/j.issn.1674-3962.2017.04.07

文獻(xiàn)標(biāo)志碼:

A

摘要:

沼氣和太陽能作為一種清潔的可再生能源已引起廣泛的關(guān)注。本文以麥稈、樹葉和玉米芯為原料，將其進行微波熱解碳化，并將碳化產(chǎn)物分別作為促進劑和對電極催化劑應(yīng)用于厭氧發(fā)酵(anaerobic digestion, AD)和染料敏化太陽能電池(dye-sensitized solar cells, DSSCs)中，研究其對沼氣厭氧發(fā)酵系統(tǒng)的產(chǎn)氣量、COD去除率、pH和DSSCs光伏性能的影響，探究其在太陽能和生物質(zhì)能領(lǐng)域的應(yīng)用潛能。結(jié)果表明：碳化生物質(zhì)作為厭氧發(fā)酵促進劑可明顯提高沼氣產(chǎn)量(549 mL/g VS vs. 409 mL/g VS)，提高COD去除率(68.00 % vs. 29.55 %)，且對厭氧發(fā)酵系統(tǒng)pH沒有顯著影響；碳化生物質(zhì)作為對電極催化劑，其DSSCs的光電轉(zhuǎn)換效率與同等實驗條件下傳統(tǒng)貴金屬Pt電極相近(3.52 % vs. 4.64 %)，可作為低成本的Pt的替代材料用于染料敏化太陽能電池。

Abstract:

As a renewable and clean energy, biogas and solar energy has attracted widely attention. In this paper, straw, leaves and corncob were carbonized by microwave pyrolytic carbonization technique, then, the carbonized-biomass were used as accelerant in anaerobic digestion (AD) and as counter electrode (CE) catalyst in dye-sensitized solar cells (DSSCs). The influence of the as-prepared carbon materials as accelerants on biogas production, chemical oxygen demand (COD) removing rate, pH value of the AD system and on the photovoltaic performance of DSSCs as CE catalysts was investigated, and further understanding the potential application of carbonized-biomass in the field of solar energy and biomass energy was discussed. Results indicate that, adding of carbonized-biomass as accelerant into anaerobic digestion system can obviously increase the biogas production (649 mL/g VS vs. 409 mL/g VS), improve the COD removing rate (68.00 % vs. 29.55 %), but has no effect on the pH value of the biogas AD system. The photoelectric conversion efficiency (PCE) of DSSCs using the carbonized-biomass is close to the traditional Pt electrode under the same condition (3.52 % vs. 4.64 %). The as-prepared carbon materials can be used as low-cost alternative Pt materials in DSSCs.