Academy of Scientific and Innovative Research (AcSIR), New Delhi, India; Corrosion Materials Protection Division, CSIR-Central Electrochemical Research Institute, Karaikudi, India.
Department of Physics, University College of Engineering- Bharathidasan Institute of Technology (BIT) Campus, Anna University, Tiruchirappalli, India; Functional Materials Division, CSIR-Central Electrochemical Research Institute, Karaikudi, India.
J Colloid Interface Sci. 2018 Nov 15;530:179-188. doi: 10.1016/j.jcis.2018.06.082. Epub 2018 Jun 28.
Highly catalytic two dimensional and metal-doped two-dimensional nanomaterials (MoS and NiMoS) were deposited over free-standing graphene (FSG) paper using electrodeposition method and subsequently used as a counter electrode in quasi solid-state dye-sensitized solar cells (q-DSSCs). The replacement of FTO by FSG facilitates high electrical conductivity and electrodeposited metal sulphides provide electrocatalytic activity. The morphology, structural phase formation and chemical composition of FSG-MoS and FSG-NiMoS were investigated using FESEM, XRD, Raman and XPS analysis. The electrochemical behavior of metal sulphide decorated FSG cathodes is investigated using an electrochemical workstation and their effects on the photo-conversion efficiency of DSSCs were assessed. NiMoS with FSG substrate is an intriguing counter electrode material that can be utilized at low fabrication cost than the conventional platinum-based counter electrodes. FSG along with the metallic-two dimensional nanoparticles (NiMoS) functions as an effective catalytic material thereby allowing DSSCs to achieve enhanced efficiency of ∼7% to provide better alternative of FTO and Pt.
采用电沉积法在独立式石墨烯（FSG）纸表面沉积高催化二维和金属掺杂二维纳米材料（MoS 和 NiMoS），并将其用作准固态染料敏化太阳能电池（q-DSSC）的对电极。用 FSG 替代 FTO 有利于提高电导率，而电沉积的金属硫化物则提供了电催化活性。通过 FESEM、XRD、拉曼和 XPS 分析研究了 FSG-MoS 和 FSG-NiMoS 的形貌、结构相形成和化学组成。使用电化学工作站研究了金属硫化物修饰的 FSG 阴极的电化学行为，并评估了它们对 DSSC 光转换效率的影响。NiMoS 与 FSG 基底结合是一种很有前途的对电极材料，其制造成本比传统的基于铂的对电极低。FSG 与金属二维纳米颗粒（NiMoS）共同作为有效的催化材料，从而使 DSSC 的效率提高到约 7%，为 FTO 和 Pt 提供了更好的替代品。
