fig3
![Recent advances and perspectives of microsized alloying-type porous anode materials in high-performance Li- and Na-ion batteries](https://image.oaes.cc/e5a27bfe-a8ab-45f1-8d99-a2e3af359ad9/4937.fig.3.jpg)
Figure 3. (A) Basic configuration and working mechanism of a cell. A typical battery device consists of a porous anode and a cathode film sandwiched between two current collectors and isolated by an insulating separator. (B) Plot showing that the capacity of an electrode is positively proportional to the mass loading of active materials on it[4] (Copyright 2017, The American Association for the Advancement of Science).