材料科学
纳米-
兴奋剂
离子
电化学
阴极
碳纤维
储能
阳极
吸附
化学工程
电极
纳米技术
硼
光电子学
复合数
复合材料
物理化学
有机化学
热力学
功率(物理)
工程类
物理
化学
作者
Xinghua Chen,Pengcheng Ye,Haiyan Wang,Hao Huang,Yijun Zhong,Yong Hu
标识
DOI:10.1002/adfm.202212915
摘要
Abstract Dual doping of boron (B) and nitrogen (N) provides an effective strategy to tailor chemical properties and electron distributions in the carbon plane, as well as customize the energy storage performance. Herein, a systematic theoretical and experimental study on rationally constructing coralloidal B, N dual‐doped carbon (BNC) nano‐bundles with abundant BN bonds for efficient Zn‐ion storage is presented. Compared with the single B or N doped sample and other dual‐doped B and N sites, the BN bond sites are found to boost the adsorption of Zn ions and enhance the electronic conductivity, which efficiently contribute to Zn‐ion storage. As expected, the optimized BNC nano‐bundles display greatly improved electrochemical performance, manifested by the high specific capacity of 204 mAh g −1 at 0.2 A g −1 and ultralong cycling stability for 40 000 cycles, outperforming most of the state‐of‐the‐art carbon cathodes. Moreover, a distinguished energy density of 178.7 Wh kg −1 and a high‐power density of 17.5 kW kg −1 are achieved with a constructed BNC//Zn device. This work not only provides critical insight for designing advanced carbon materials but also deepens the fundamental understanding of the governing mechanisms in dual‐doped carbon electrodes.
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