fig24

Figure 24. Schematic and performance diagrams of pressure-driven electrochemical cell. (A) Pressure-driven electrochemical cell. (B) Current response under alternating pressure in different directions, indicating that the membrane can work when pressure is applied in different directions. (C) SEM image of the cross section of a BN membrane with a thickness of 22 μm. The inset shows the layered structure formed by the stacking of BN nanosheets. Figures reproduced with permission from Qin et al.^[135] (Copyright © 2018 Elsevier). BN: Boron nitride.