Achieving wide‑temperature‑range physical and chemical hydrogen sorption in a structural optimized Mg/N‑doped porous carbon nanocomposite

As the hydrogen economy accelerates, solid-state storage that delivers high gravimetric and volumetric capacity at sub-ambient and moderate temperatures remains elusive. Now, researchers from Shanghai Jiao Tong University, led by Prof. Wenjiang Ding and Prof. Jianxin Zou, report an ammonia-etched, N-doped porous carbon (rN-pC) that simultaneously acts as a nanoconfinement scaffold and an active physisorbent for Mg/MgH ₂ . Published in Nano-Micro Letters , the 60MgH ₂ @rN-pC composite releases 0.9 wt% H ₂ at −196 °C and 0.1 bar, starts chemical dehydrogenation at only 175 °C, and delivers a pellet volumetric density of 33.4 g L ^-1 —outperforming 350 bar compressed H ₂ .

Why Dual-Mode Sorption Matters

Innovative Design & Features

Applications & Future Outlook

Scalable Pellet : Cold-pressed at 500 MPa, the material retains 33.4 g L ^-1 volumetric capacity, meeting DOE 2025 targets for onboard storage without heavy-metal catalysts.

Nano-Micro Letters

10.1007/s40820-025-01931-w

News article

Achieving Wide‑Temperature‑Range Physical and Chemical Hydrogen Sorption in a Structural Optimized Mg/N‑Doped Porous Carbon Nanocomposite

2-Jan-2026