求助电化学催化的性能分析? 首先,没看见c图在哪里。 其次,a和b图的区别仅仅是电流密度的单位不同而已。如果按照电流密度的定义,单位面积通过的电流大小,那么单位应该是mA/cm2。在电化学领域中,更常见的单位是mA/g,也就是单位质量活性物 ... 谢谢你!As shown in Figure 4b,when applying an overpotential of 300 mV,a remarkable current density of 181.8 A g?1 is achieved, approximately 33.7- and 17.8-folds higher than that of the β-Ni(OH)2 nanosheets and Ni–Al LDH nanosheets, respectively, suggesting the high exposure of active sites brought by abundant nanopores. 图上找不到300mV QQ图片20170323125207.png ,查看更多