Optimizing Hydrophilicity in NiO/Graphene Composites Via Stearic Acid Treatment for Humidity-to-Energy Applications
Year: 2024
Type: article
Abstract: Converting water molecules into energy, this research field has garnered significant attention, yet it is still in its early stages of exploration.The main challenge in humidity-to-energy development is the effectiveness of material in water absorption.This article presents a study on surface modification through stearic acid treatment aimed at optimizing the hydrophilicity of hygroscopic material, thereby improving humidity energy harvesting performance.Here, we successfully synthesized a novel NiO/Graphene on cellulose substrate (NiO/Gr/cellulose) as the hygroscopic material using the sonicated solution immersion method.A humidity-to-energy device was fabricated by utilizing the NiO/Gr/cellulose, yielding an output voltage of 2.26 mV, a current density of 0.18 nA/cm², and a power output of 0.51 pW at 75% relative humidity.This research highlights the potential of NiO/Gr/cellulose with sufficient hydrophilicity as a promising hygroscopic material, offering significant future prospects in humidity energy harvesting technology.
Authors: Universiti Teknologi MARA Shah Alam, Nurul Syafiqah Mohamed Mustakim, Dayana Kamaruzaman, Universiti Teknologi MARA Shah Alam, A Shamsul Rahimi A Subki, Universiti Teknikal Malaysia Melaka, Mohd Hanapiah Abdullah, Universiti Teknologi MARA Cawangan Pulau Pinang, Mohd Firdaus Malek, Universiti Teknologi MARA Shah Alam, Norfarariyanti Parimon, Mohd Khairul Ahmad, Universiti Tun Hussein Onn Malaysia, Suriani Abu Bakar, Universiti Pendidikan Sultan Idris, Nagamalai Vasimalai, Mohamad Hafiz Mamat, Universiti Teknologi MARA Shah Alam
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4406918280