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Electrochemistry of P–C Bonds in Phosphorus–Carbon Based Anode Materials by Pai Li; Hongchang Jin; Guiming Zhong; Hengxing Ji; Zhenyu Li; Jinlong Yang is a Engineering article available to read on EtoBox.

What is Electrochemistry of P–C Bonds in Phosphorus–Carbon Based Anode Materials about?

Phosphorus-carbon anode materials for alkali-metal ion storage in rechargeable batteries can simultaneously achieve high-energy density and fast charging. The P-C-bonded structure in the phosphorus-carbon materials has been observed and acknowledged to be a critical structural feature that renders improved cycling stability and rate performance. However, the underlying mechanisms, especially the role played by P-C bonds, remain elusive. By combining computational simulations and spectroscopic characterizations, we reveal that the stability of P-C bonds is critical to the electrochemical performance. In the discharge process, P-P bonds are fragile, while the bonding state of the P-C bonds is almost unchanged since electrons were mainly received by the P atoms to form lone pairs. The preserved P-C clusters can effectively serve as a reunion center for the recovery of P-P bonds in the recharging process, leading to a moderate energy change and improved cycling reversibility and structural stability of the phosphorous for electrochemical energy storage.

Who reads Electrochemistry of P–C Bonds in Phosphorus–Carbon Based Anode Materials?

Author

Pai Li; Hongchang Jin; Guiming Zhong; Hengxing Ji; Zhenyu Li; Jinlong Yang

Publisher

American Chemical Society (ACS)

Published

2022

Language

EN

Field

Engineering (Physical Sciences)