High-performance magnesium ion asymmetric Ppy@FeOOH//Mn3O4 micro-supercapacitor

Polypyrrole-Derived Carbon Coated NiCoMn Layered Double Hydroxides for High-Performance Supercapacitors

“…45 According to the previous works, the N doped into C materials can lower the band gap of the material and improve the electrical conductivity, effectively enhancing the electrochemical property. 56 All the above observations and characterizations confirm the successful preparation of the 3D NCM@PPy-C electrode material on the macroporous Ni foam substrate and pave the way for its electrochemical supercapacitor performance investigation.…”

“…The spectrum of C 1s exhibits three distinct peaks at 284.8, 286, and 288.5 eV, which can be attributed to the presence of C, C, N, and CC functional groups, respectively (Figure f). It is noteworthy to mention that the peak at 285.9 eV corresponds to the C–N bond, which is a distinctive characteristic peak commonly associated with polypyrrole (PPy) . As depicted in Figure g, the N 1s peak provides visual evidence of the presence of five distinct bonding formations for nitrogen (N) incorporated into carbon.…”

“…It is noteworthy to mention that the peak at 285.9 eV corresponds to the C−N bond, which is a distinctive characteristic peak commonly associated with polypyrrole (PPy). 56 As depicted in Figure 4g, the N 1s peak provides visual evidence of the presence of five distinct bonding formations for nitrogen (N) incorporated into carbon. These configurations include pyridinic N (N-6), characterized by N atoms situated within a six-member ring; pyrrolic N, where N atoms are located within a five-member ring; quaternary N (N-Q), denoting N doped into the carbon rings; graphitic N (N− C), referring to N-doped carbon materials; and oxidized N (N−O).…”

“…These configurations include pyridinic N (N-6), characterized by N atoms situated within a six-member ring; pyrrolic N, where N atoms are located within a five-member ring; quaternary N (N-Q), denoting N doped into the carbon rings; graphitic N (N–C), referring to N-doped carbon materials; and oxidized N (N–O) . According to the previous works, the N doped into C materials can lower the band gap of the material and improve the electrical conductivity, effectively enhancing the electrochemical property . All the above observations and characterizations confirm the successful preparation of the 3D NCM@PPy-C electrode material on the macroporous Ni foam substrate and pave the way for its electrochemical supercapacitor performance investigation.…”

Fabrication of Porous Reduced Graphene Oxide Encapsulated Cu(OH)2 Core–shell Structured Carbon Fiber-Based Electrodes for High-Performance Flexible Supercapacitors

“…Transition metal hydroxides/oxides have captured significant interest as electrode materials for supercapacitors due to their high theoretical capacitance. − Among them, copper-based hydroxides and oxides have been widely applied in the fabrication of advanced electrode materials. Particularly, Cu­(OH) 2 , due to its abundant resources, chemical stability, morphology diversity, and simple preparation methods, has an excellent prospect for scalable application. , Chen et al employed a two-step method to prepare a three-dimensional (3D) Cu­(OH) 2 nanowire Cu/CF electrode material .…”