Pseudocapacitive Heteroatom-Doped Carbon Cathode for Aluminum-Ion Batteries with Ultrahigh Reversible Stability
Jiahui Li , Jehad K. El-Demellawi , Guan Sheng , Jonas Björk , Fanshuai Zeng , Jie Zhou , Xiaxia Liao , Junwei Wu , Johanna Rosen , Xingjun Liu , Husam N. Alshareef , Shaobo Tu
Energy & Environmental Materials ›› 2024, Vol. 7 ›› Issue (5) : e12733
Pseudocapacitive Heteroatom-Doped Carbon Cathode for Aluminum-Ion Batteries with Ultrahigh Reversible Stability
Aluminum (Al)-ion batteries have emerged as a potential alternative to conventional ion batteries that rely on less abundant and costly materials like lithium. Nonetheless, given the nascent stage of advancement in Al-ion batteries (AIBs), attaining electrode materials that can leverage both intercalation capacity and structural stability remains challenging. Herein, we demonstrate a C3N4-derived layered N,S heteroatom–doped carbon, obtained at different pyrolysis temperatures, as a cathode material for AIBs, encompassing the diffusion–controlled intercalation and surface-induced capacity with ultrahigh reversibility. The developed layered N,S-doped corbon (N,S-C) cathode, synthesized at 900 °C, delivers a specific capacity of 330 mAh g–1 with a relatively high coulombic efficiency of ∼85% after 500 cycles under a current density of 0.5 A g-1. Owing to its reinforced adsorption capability and enlarged interlayer spacing by doping N and S heteroatoms, the N,S-C900 cathode demonstrates outstanding energy storage capacity with excellent rate performance (61 mAh g–1 at 20 A g–1) and ultrahigh reversibility (90 mAh g–1 at 5 A g–1 after 10 000 cycles).
2D carbon / adsorption energy / heteroatoms-doping / high capacity / long cycling life
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2024 The Authors. Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.
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