Spacing graphene and Ni-Co layered double hydroxides with polypyrrole for high-performance supercapacitors

Jing Liang, Cuili Xiang, Yongjin Zou, Xuebu Hu, Hailiang Chu, Shujun Qiu, Fen Xu, Lixian Sun

Table 1 Comparison of the specific capacitance of RGO/PPy/NiCo-LDH electrode with some of the recent reports.

Electrode materials Current density (A g-1) Specific capacitance (F g-1) Ref. Co(OH)2/Ni-Co LDH 1 825 [20] Co9S8@Ni-Co LDH 1.25 1020 [34] Ni(OH)2/Co(OH)2/GO 1 2050.6 [43] Ni(OH)2/PNTs 1 864 [44] PPy/Ni(OH)2/SGO 2.8 1632.5 [45] Ni(OH)2/graphene sheets 0.5 1335 [46] Co(OH)2 nanowires 5 358 [47] Ni(OH)2/CNTs hybrids 3 1244.2 [48] Ni-Co binary hydroxides 5 1030 [49] Ni(OH)2/3D graphene 1 1450 [50] RGO/Ni-Co-OH 1 1622 [51] Carbon cloth/N-doped-LDH 1 1817 [52] NiCo2O4/RGO 0.5 947.4 [53] NiCo-LDH/RGO 2 1911.1 [54] RGO/Ag/NiCo2S4 2 2438 [55] RGO/PPy/NiCo-LDH 1 2534 This work