采用氮氣吸附靜態容量法（氮氣吸附法），以氧化還原石墨烯/金屬氧化物粉體為研究對象，利用ASAP 2460型比表面積和孔隙度分析儀測量了其比表面積，確定了測量比表面積的理想測試條件，并對測量不確定度進行評定。結果表明：氮氣吸附法測量石墨烯類粉體比表面積的理想樣品用量為0.2~0.4 g。比表面積不確定度的評定僅考慮測量重復性、天平稱量樣品質量及標樣引入的標準不確定度，在置信水平p為95%，自由度V_rel為32時，采用氮氣吸附法物理吸附儀測量石墨樣品比表面積的擴展不確定度為14.55 m²·g^-1。

Specific surface area of redox graphene/metal oxide powder was measured by ASAP 2460 specific surface area and porosity analyzer using nitrogen adsorption static capacity method (nitrogen adsorption method). The ideal test conditions were determined, and the measurement uncertainty was evaluated. The results show that the ideal sample amount for measuring the specific surface area of graphene powder by nitrogen adsorption method is 0.2~0.4 g. The uncertainty evaluation of specific surface area only considers the standard uncertainty introduced by measurement repeatability, the weight of sample weighed by the balance and the standard sample. When the confidence level p is 95% and the degree of freedom V_rel is 32, the expanded uncertainty of specific surface area of graphite sample measured by nitrogen adsorption method physical adsorption instrument is 14.55 m²·g^-1.