fig3

Figure 3. Ion transport regulation of the ACNT membrane. (A) I-V curves obtained from different configurations (symmetric and asymmetric): (i)ACNT/Al, (ii) ACNT/Al/ACNT and (iii) ACNT/Al/ACNT/Al, demonstrating a hysteretic loop behavior only in asymmetric configurations; (B) Comparative I-V responses of CNT membranes without oriented channels: (i) CNT and (iii) CNT/Al; and ACNT membranes with oriented channels: (ii) ACNT and (iv) ACNT/Al; (C) Schematic of the ACNT/Al system under applied stress; (D) I-V curves of ACNT/Al under various applied pressures. All I-V measurements were performed in 10 mM KCl at a scan rate of 0.3 V/s. ACNT: A carbon nanotube array; I-V: current-voltage; ACNT/Al: Al and CNT array-based aluminum; CNT: carbon nanotube.