What question did this study set out to answer?

To create a high-performance electrode architecture that bridges the gap between battery-level energy density and supercapacitor-level power output using biomass-derived carbon materials.

March 11, 2014Nano Letters

Hybrid Device Employing Three-Dimensional Arrays of MnO in Carbon Nanosheets Bridges Battery–Supercapacitor Divide

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Authors

HWHuanlei WangQingdao University ZXZhanwei XuShaanxi University of Science and Technology ZLZhi LiUniversity of Alberta

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Implication

Experimental study demonstrates high energy and power density in a hybrid capacitor, indicating a viable bridge between batteries and supercapacitors.

Key Points

To create a high-performance electrode architecture that bridges the gap between battery-level energy density and supercapacitor-level power output using biomass-derived carbon materials.
Synthesized three-dimensional arrays of biomass-derived carbon nanosheets anchoring a monolayer of MnO nanocrystallites (3D-MnO/CNS) to shorten diffusion distances to approximately 20 nm.
Assembled and evaluated a hybrid capacitor using the 3D-MnO/CNS material as the anode and carbon nanosheets as the cathode across various current rates and cycle counts.
The 3D-MnO/CNS anode exhibited Li storage capacities of 1332 mAh g⁻¹ at 0.1 A g⁻¹, 567 mAh g⁻¹ at 5 A g⁻¹, and 285 mAh g⁻¹ at 20 A g⁻¹ with negligible capacity degradation after 500 cycles.
The complete hybrid capacitor delivered 184 Wh kg⁻¹ at 83 W kg⁻¹ and 90 Wh kg⁻¹ at 15,000 W kg⁻¹ based on active materials, retaining 76% of its capacity after 5000 cycles.

Cite This Study

Wang et al. (2014) studied this question.

synapsesocial.com/papers/6a811df98fb9cc96313be077 https://doi.org/10.1021/nl500011d

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Implication

Experimental study demonstrates high energy and power density in a hybrid capacitor, indicating a viable bridge between batteries and supercapacitors.

Hybrid Device Employing Three-Dimensional Arrays of MnO in Carbon Nanosheets Bridges Battery–Supercapacitor Divide

Discussion

Member takes

Implication

Key Points

Cite This Study

Hybrid Device Employing Three-Dimensional Arrays of MnO in Carbon Nanosheets Bridges Battery–Supercapacitor Divide

Discussion

Member takes

Implication

Key Points

Cite This Study

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