Ammonium carbonate (Ammonium carbonate), 99% is a solid amino compound that functions as a buffer, pH regulator, pore-forming agent, and electrocatalytic oxidation substrate. Ammonium carbonate, 99% is a GRAS-grade direct food additive with no restricted daily intake specified by FAO/WHO, and it shows no acute skin toxicity, clinical signs of toxicity, or effects on body weight in rats. Ammonium carbonate, 99% undergoes electrocatalytic oxidation in alkaline solutions with a Pt/C catalyst (carbonate adsorption interferes with activity). Ammonium carbonate, 99% can serve as a fuel for low-temperature polymer fuel cells and anion exchange membrane fuel cells (with performance superior to pure ammonia), and can also form pores in the carrier-free Pt cathode catalyst layer after low-temperature decomposition, thereby enhancing catalyst activity under low-humidity conditions and the performance of proton exchange membrane fuel cells[1][2][3].