From a process and macro-scale reactor engineering perspective, this breakthrough offers a seamless alignment with low-and medium-grade industrial waste heat (150–250 °C). It establishes a viable material foundation for heavy industrial decarbonization tracks, such as hydrogen-driven metallurgy and clean steel manufacturing. Future scaling paths must continue to address the economic optimizations of rare earth processing and device-level thermal management under dynamic gas loads. Nonetheless, Li and colleagues have delivered a definitive design paradigm, proving that precision multi-scale microstructure programing can successfully dismantle the fundamental thermodynamic boundaries of solid-state storage.