Garg Kuldeep K, Pandey Sandeep, Pathak Mayank, Sharma Chetan Prakash, Kumar Amit, Pandey Lata, Arnusch Christopher J, Sahoo Nanda Gopal, Dhawan S K, Lee Man-Jong, Singh Rajiv K
Photovoltaic Metrology Section, Advanced Materials and Devices Metrology Division, CSIR- National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110012, India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
Heliyon. 2024 Apr 26;10(9):e30263. doi: 10.1016/j.heliyon.2024.e30263. eCollection 2024 May 15.
Advanced graphene-based materials have been proficiently incorporated into next-generation solar cells and supercapacitors because of their high electrical conductivity, large surface area, excellent charge-transport ability, and exceptional optical properties. Herein, we report the synthesis of graphene nanosheets (GNs) from waste cardboard via pyrolysis, with ethyl alcohol as the growth initiator. Additionally, we demonstrated the use of GNs in energy conversion and storage applications. Using the GN electrode in perovskite solar cells resulted in an excellent power conversion efficiency of ∼10.41 % for an active area of 1 cm2, indicating an enhancement of approximately 27 % compared to conventional electrodes. Furthermore, the GNs were used as active electrode materials in supercapacitors with excellent electrochemical performance and a high gravimetric specific capacitance of 167.5 F/g at a scan rate of 2 mV/s. The developed GNs can be efficiently used for energy storage, conversion, and electrochemical sensing applications.
先进的石墨烯基材料因其高导电性、大表面积、优异的电荷传输能力和出色的光学性能，已被成功应用于下一代太阳能电池和超级电容器。在此，我们报告了以乙醇为生长引发剂，通过热解从废纸板合成石墨烯纳米片（GNs）的方法。此外，我们展示了GNs在能量转换和存储应用中的用途。在钙钛矿太阳能电池中使用GN电极，对于1平方厘米的活性面积，功率转换效率达到了约10.41%，与传统电极相比提高了约27%。此外，GNs被用作超级电容器的活性电极材料，具有优异的电化学性能，在2 mV/s的扫描速率下，重量比电容高达167.5 F/g。所开发的GNs可有效用于能量存储、转换和电化学传感应用。
