What question did this study set out to answer?

To develop a defect-rich, hierarchically porous carbon host from renewable lignin that suppresses sodium dendrite growth and corrosion in sodium metal batteries.

February 10, 2022Advanced Energy Materials

Highly Sodiophilic, Defect‐Rich, Lignin‐Derived Skeletal Carbon Nanofiber Host for Sodium Metal Batteries

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To develop a defect-rich, hierarchically porous carbon host from renewable lignin that suppresses sodium dendrite growth and corrosion in sodium metal batteries.
Synthesized skeletal carbon nanofiber (SCNF) hosts via electrospinning of renewable lignin biopolymer to construct SCNF@Na composite anodes.
Characterized sodium deposition mechanisms and interfacial chemistry using depth profiling experiments and density functional theory (DFT) calculations.
Evaluated electrochemical reversibility in symmetric and asymmetric cells, and tested full-cell performance by pairing SCNF@Na with Na3V2(PO4)2F3 cathodes.
Enabled uniform, dense sodium nucleation and planar growth alongside a defect-induced, fluorine-rich solid electrolyte interface (SEI) layer that protected the metallic anode.
Full cells paired with Na3V2(PO4)2F3 cathodes delivered a capacity retention of 106 mAh g⁻¹ for 350 cycles with an average Coulombic efficiency of 99.2% at 1C.
High-rate full cells achieved 103 mAh g⁻¹ after 200 cycles at 4C.

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Implication

Experimental study demonstrates a lignin-derived skeletal carbon nanofiber host for sodium anodes, indicating a pathway toward safe, high-performance sodium metal batteries.

Cite This Study

Mubarak et al. (2022) studied this question.

synapsesocial.com/papers/6a7b9c09d27879525375db2b https://doi.org/10.1002/aenm.202103904

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Implication

Experimental study demonstrates a lignin-derived skeletal carbon nanofiber host for sodium anodes, indicating a pathway toward safe, high-performance sodium metal batteries.

Highly Sodiophilic, Defect‐Rich, Lignin‐Derived Skeletal Carbon Nanofiber Host for Sodium Metal Batteries

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Cite This Study

Highly Sodiophilic, Defect‐Rich, Lignin‐Derived Skeletal Carbon Nanofiber Host for Sodium Metal Batteries

Key Points

Discussion

Implication

Cite This Study

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