Ma Pin, Lu Wenli, Yan Xiaoying, Li Weidan, Li Li, Fang Yanyan, Yin Xiong, Liu Zhengang, Lin Yuan
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
University of Chinese Academy of Sciences Beijing 100049 P. R. China.
RSC Adv. 2018 May 21;8(33):18427-18433. doi: 10.1039/c8ra02575d. eCollection 2018 May 17.
Strategies for environmentally friendly reutilization of waste biomass are highly desirable nowadays. Meanwhile, seeking Pt-free electrocatalysts for triiodide reduction with both high catalytic activity and low cost is critical for the development of dye-sensitized solar cells (DSCs). In the study, heteroatom tri-doped porous carbons (TPCs) were prepared carbonization of a typical food waste (fish waste) and explored as a counter electrode (CE) in a DSC. The as-prepared carbon materials possessed a porous structure with a large BET surface area of 2933 m g, while being simultaneously naturally doped by three heteroatoms (N, P and S). More importantly, the resultant N, P, S-tri-doped porous carbon exhibited outstanding electrochemical activity towards triiodide reduction with good stability. Moreover, the DSC with the optimized TPC electrode showed a power conversion efficiency of 7.83%, which is comparable to the device with a costly Pt-based CE (8.34%), measured under one sun illumination (AM 1.5G). This work demonstrates that carbonization of fish waste offers a cost-effective approach to prepare multifunctional carbon materials for advanced energy applications.
如今，对废弃生物质进行环境友好型再利用的策略非常必要。同时，寻找具有高催化活性和低成本的用于还原三碘化物的无铂电催化剂对于染料敏化太阳能电池（DSC）的发展至关重要。在本研究中，通过碳化典型的食物垃圾（鱼废料）制备了杂原子三掺杂多孔碳（TPC），并将其作为DSC中的对电极（CE）进行了探索。所制备的碳材料具有多孔结构，BET表面积大，为2933 m²/g，同时被三种杂原子（N、P和S）自然掺杂。更重要的是，所得的N、P、S三掺杂多孔碳对三碘化物还原表现出优异的电化学活性和良好的稳定性。此外，具有优化TPC电极的DSC在一个太阳光照（AM 1.5G）下测量时，功率转换效率为7.83%，与具有昂贵铂基CE的器件（8.34%）相当。这项工作表明，鱼废料的碳化提供了一种经济有效的方法来制备用于先进能源应用的多功能碳材料。
