方案1、 ZnCo-MOF@PLB-800 的合成示意图。
图1、 循环测试后(a)和(b)PLB、(c)和(d)ZnCo-MOF@PLB-800 和(e)ZnCo-MOF@PLB-800 的 SEM 图像,以及(f)ZnCo-MOF@PLB-800 的 EDS 元素图谱。
图2、 (a)-(c) ZnCo-MOF@PLB-800的TEM图像。
图3、 PLB 和 ZnCo-MOF@PLB-800 的 XRD 图样(a)、拉曼光谱(b)、氮吸附/解吸等温线(c)和孔径分布(d)。
图4、
XPS survey spectrum (a) and (b) Co 2p, (c) C 1s, (d) N 1s, and (e) O 1s.
图5、(a) CV curves of ZnCo-MOF and ZnCo-MOF@PLB-800 at a scan rate of 20 mV s−1, (b) GCD curves of ZnCo-MOF and ZnCo-MOF@PLB-800 at 1 A g−1, (c) CV curves of ZnCo-MOF@PLB-800 at different scan rates from 5 to 200 mV s−1, (d) calculation of the b-value during charge–discharge processes from the relationship between the log v and log i for ZnCo-MOF@PLB-800, (e) the capacitive contribution ratio of the ZnCo-MOF@PLB-800 electrode at different scan rates, (f) GCD curve ZnCo-MOF@PLB-800 at different current densities, (g) EIS spectra of ZnCo-MOF@PLB-800, and (h) specific capacitance of ZnCo-MOF@PLB-800 at different current densities.
图6、(a) The CV curves of PLB and Zn/Co-MOF@PLB-800 at 20 mV s
−1
, (b) CV curves of PLB at different scan rates, (c) CV curves of Zn/Co-MOF@PLB-800 at different scan rates, (d) GCD curves of ZnCo-MOF@PLB-800//PLB from 1 A g
−1
to 20 A g
−1
, (e) EIS spectra of ZnCo-MOF@PLB-800//PLB, (f) the specific capacitance values of ZnCo-MOF@PLB-800//PLB ASC at different current densities, (g) Ragone plots of the ZnCo-MOF@PLB-800//PLB ASC, (h) cycle stability and coulombic efficiency of ZnCo-MOF@PLB-800//PLB at 5 A g
−1
.