Microstructure and electrochemical properties of high performance graphene/manganese oxide hybrid electrodes

Hamade, Fatima; Radich, Emmy; Davis, Virginia A.

doi:10.1039/d1ra05323j

Cited by 3 publications

(1 citation statement)

References 87 publications

(139 reference statements)

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“…The as-assembled ESC using δ-MnO 2 / GH composite electrode delivered a high energy density of composited. Such as CB/CNT, 227 amorphous CNT, 228 free-standing 3D graphene, 229,230 CNT/graphene, 231,232 porous CNT, 233 graphene paper, 234 ordered mesoporous carbon, 235 hierarchical porous graphitic carbon, 236 rGO 237,238 and many more.…”

Section: Phosphorous Dopingmentioning

confidence: 99%

Progress on carbon for electrochemical capacitors

Bizuneh

Adam

2023

Battery Energy

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Electrochemical capacitors bridge the energy gap between conventional dielectric capacitors and batteries. The energy storage mechanism relies on purely physical electrical double‐layer charging (EDL) and the faradaic process involving fast electrochemical redox reactions. These processes are strongly influenced by the surface area, porosity, electrical conductivity of the electrode materials, and the operating potential window of the electrolyte used. Carbonaceous materials play enormous roles in delivering outstanding electrochemical performance in electrochemical supercapacitors (ESCs) due to attractive material features suitable for high charge storage and release. However, due to the purely EDL‐based charge storage mechanism in only carbon‐based ESCs, the achievable energy density is low and hardly meets the high energy density demanding applications. Therefore, various carbon structures such as activated carbon, carbon nanotubes, graphene, and so on are designed and integrated with other hetero atoms or combined with transition metal oxides and polymer components to induce the pseudo‐capacitive contributions via the electrochemical faradaic reaction. Thus, promoting the electrochemical performance of ESC based on the hybrid/composite material attributed to synergistic capacitances from EDLC and pseudocapacitance. Therefore, this review overviews the general perspective of the ESCs based on nanocarbons with various forms trending the progressive research contributions in developing high‐performance ESCs.

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