The effects of carbon-modified electrode on stability of lithium metal deposition with high areal capacity and high Coulombic efficiency

- The carbon-modified electrodes display high CE for lithium deposition.
- The amorphous crystal carbon-modified electrode shows a high initial CE (75%).
- The CE of HCFF electrode could approaches 99.5% for at least 100 cycles.
- The CE of HCFF electrode keep stable when the areal capacity approaches 6 mAh·cm2.

Three kinds of carbon-modified electrodes on stability of lithium metal deposition were investigated. Results indicated the amorphous carbon-modified electrode is more effective to improve initial Coulombic efficiency than the graphitized carbon-modified electrode. With high porosity (81%) and amorphous crystal structure, the low cost micro-hollow carbon fiber foam electrode provides high and stable Coulombic efficiency of 99.5% for more than 100 cycles when the areal capacity of electrode approaches 6 mAh·cm−2. The high areal capacity of high porosity electrode would be a promising anode for lithium-sulfur battery.

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