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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Ultrathin paper-like boron-doped carbon nanosheet electrodes combined with boron-enriched gel polymer electrolytes for high-performance energy storage
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Ultrathin paper-like boron-doped carbon nanosheet electrodes combined with boron-enriched gel polymer electrolytes for high-performance energy storage

机译：超薄纸状掺硼碳纳米片电极与富含硼的凝胶聚合物电解质相结合，可实现高性能储能

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摘要

Flexible energy storage devices that can function under considerable physical deformation have shown great promise for applications in portable electronics. In this work, we report for the first time a novel design of all-solid-state symmetric supercapacitors (SCs) based on free-standing ultrathin boron-doped graphene paper (B-GP) electrodes with boron-enriched gel polymer electrolytes (GPEs). Specifically, the B-GP electrodes integrated with B-containing GPEs not only introduce more electrochemically active sites for absorption/desorption of electrolyte ions, but also facilitate diffusion of the electrolyte during charging/discharging processes. The novel design of B-GP with B-containing GPEs endows our symmetric SC with a voltage of 2.5 V, an unprecedented energy density of 39.31 W h kg(-1) (with a power density of 1.44 kW kg(-1)), a stable cycling performance (a capacity retention of 90% after 3000 continuous charge/discharge cycles), good rate capability, distinguished mechanical flexibility and temperature resistant stability. This work provides a promising candidate to design a new generation of electrochemical SCs for energy storage devices.
机译：可以在相当大的物理变形下工作的柔性能量存储设备已显示出在便携式电子设备中的广阔前景。在这项工作中，我们首次报告了一种新的全固态对称超级电容器（SCs）的新颖设计，该超级电容器基于独立的超薄掺硼石墨烯纸（B-GP）电极和富含硼的凝胶聚合物电解质（GPE） ）。具体地，与含B的GPE结合的B-GP电极不仅引入更多的电化学活性位以吸收/解吸电解质离子，而且在充电/放电过程中促进电解质的扩散。具有含B的GPE的B-GP的新颖设计使我们的对称SC电压达到2.5 V，空前的能量密度为39.31 W h kg（-1）（功率密度为1.44 kW kg（-1））。 ，稳定的循环性能（3000个连续充电/放电循环后，容量保持率达到90％），良好的倍率性能，出色的机械柔韧性和耐高温稳定性。这项工作为设计用于储能设备的新一代电化学SC提供了有希望的候选者。

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