In future lanscape of sustainable energies and mission of combating global climate challenges, hydrogen plays a crucial role in both stationary and portable energy systems and could compromise 18% of total energy demand. High-capacity, safe, and cost-effective hydrogen storage is one of the keys to hydrogen economic growth but remains a daunting challence. A range of advanced material systems including metal hydrides, metal-organic frameworks, and 2D material are explored to achieve high storage capacity, but high operating pressures, low charging/discharging rate and energy intensive discharging process have hindered their growth and deployment. Here, we report a material paradigm for high storage capacity of 4.5 wt% at 11 bar surpassing the capacity of current materials by several folds, with fast charging/discharging and ambient temperature discharging process. The material platform store hydrogen in form of hydrogen hydrates in rationally-tuned and surface-modified mesoporous carbon structure with long-term stability. Despite tremendous potential of hydrogen hydrates as storage medium, decades old hurdles of high operating pressure and slow kinetics stalled their growth. The presented material paradigm herein addresses these challenges by an order of magnitude reduction in the operating pressure and twenty times faster kinetics. This thin material platform promises a compact and green platform for hydrogen storage for both stationary plants along with land and sea transportation.