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2D Silicene Nanosheets for High-Performance Zinc-Ion Hybrid Capacitor Application
ACS Nano ( IF 15.8 ) Pub Date : 2021-10-12 , DOI: 10.1021/acsnano.1c06104 Qiang Guo 1 , Jingjing Liu 2 , Congcong Bai 1 , Nan Chen 1 , Liangti Qu 3
ACS Nano ( IF 15.8 ) Pub Date : 2021-10-12 , DOI: 10.1021/acsnano.1c06104 Qiang Guo 1 , Jingjing Liu 2 , Congcong Bai 1 , Nan Chen 1 , Liangti Qu 3
Affiliation
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Supercapacitors possessing fast-charging characteristics and long lifespan are becoming increasingly important for powering portable and smart energy storage devices, and combining capacitive and battery-type materials into an integrated device is an effective method for increasing the overall performance of capacitors. Silicene is being designed as a cathode for the development of enhanced capacitance and ultra-cycle stable zinc-ion hybrid capacitors. Possessing a maximum areal capacity of 14 mF cm–2, a maximum power density of 9 mW cm–2, capacitance retention of 112% even after 10 000 cycles, and an unexpectedly high energy density of 23 mJ cm–2, this achievement of the zinc-ion hybrid capacitor would be superior to that of previously reported silicon-based supercapacitors. The DFT calculations further reveal that Zn ions dominate the capacitive behavior of the silicene electrode. The support association between silicene and zinc-ion hybrid capacitors so that they can take advantage of each other’s strengths, which takes electrochemical energy technology to a stage, offering a straightforward proposal for integration and implementation of silicon-based materials.
中文翻译：
用于高性能锌离子混合电容器应用的二维硅烯纳米片
具有快速充电特性和长寿命的超级电容器对于为便携式和智能储能设备供电变得越来越重要，将电容和电池类材料组合成一个集成设备是提高电容器整体性能的有效方法。硅烯被设计为阴极，用于开发增强电容和超循环稳定的锌离子混合电容器。拥有 14 mF cm –2的最大面积容量、9 mW cm –2的最大功率密度、即使在 10 000 次循环后仍保持 112% 的电容保持率以及 23 mJ cm –2的意外高能量密度，锌离子混合电容器的这一成就将优于先前报道的硅基超级电容器。DFT 计算进一步揭示了 Zn 离子主导了硅烯电极的电容行为。硅烯和锌离子混合电容器之间的支持关联，使它们可以发挥各自的优势，将电化学能源技术提升到一个阶段，为硅基材料的集成和实施提供了直接的建议。
更新日期：2021-10-26
中文翻译：
用于高性能锌离子混合电容器应用的二维硅烯纳米片
具有快速充电特性和长寿命的超级电容器对于为便携式和智能储能设备供电变得越来越重要，将电容和电池类材料组合成一个集成设备是提高电容器整体性能的有效方法。硅烯被设计为阴极，用于开发增强电容和超循环稳定的锌离子混合电容器。拥有 14 mF cm –2的最大面积容量、9 mW cm –2的最大功率密度、即使在 10 000 次循环后仍保持 112% 的电容保持率以及 23 mJ cm –2的意外高能量密度，锌离子混合电容器的这一成就将优于先前报道的硅基超级电容器。DFT 计算进一步揭示了 Zn 离子主导了硅烯电极的电容行为。硅烯和锌离子混合电容器之间的支持关联，使它们可以发挥各自的优势，将电化学能源技术提升到一个阶段，为硅基材料的集成和实施提供了直接的建议。
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