Volume 51

Cost-Effective Hydrogen Storage Materials: Utilizing Biogas Slurry to Synthesize High-Performance Hollow porous Carbon Spheres Hang Yuan, Hongguang Zhu, Longlong Lei, Man Sun

Abstract

Achieving a balance between cost-effectiveness and high performance in hydrogen storage materials is a significant challenge. This study presents a novel method for synthesizing hollow porous carbon spheres with a cluster-like structure using economical materials such as biogas slurry, starch, and ferric oxide. Through a systematic analysis of activation temperatures and ratios, optimal conditions were identified. The resulting materials, CS850-4.5 and CS800-4, achieved high gravimetric H2 uptake of 4.5 wt% (77 K, 50 bar) and volumetric H2 uptake of 25.9 g/L (77 K, 30 bar), respectively. This approach offers dual advantages in both performance and economic viability.

Keywords Hydrogen Storage, Biogas Slurry, Hollow Porous Carbon Spheres, Cost-Effectiveness