Three‐dimensional nitrogen rich bubbled porous carbon sponge for supercapacitor & pressure sensing applications,International Journal of Energy Research

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Three‐dimensional nitrogen rich bubbled porous carbon sponge for supercapacitor & pressure sensing applications
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-04-30 , DOI: 10.1002/er.5434
Arthi Gopalakrishnan _{1,

2} , Aimin Yu ₂ , Sushmee Badhulika ₁

Affiliation

Three‐dimensional (3D) porous carbonaceous materials offer numerous merits such as light‐weight, high surface area, flexibility, and thus hold immense potential in energy storage applications. In this work, we report preparation of nitrogen‐rich free‐standing compressible porous neuron‐like carbon sponge using commercially available kitchen sponge by a facile, cost‐effective, and scalable synthetic strategy. The unique neuron‐like bubbled interconnected carbon structure with enhanced N/O functionalities improves the electrochemical performance by providing sufficient space for ion transport and large accessible surface‐active sites. This material also delivers high current response under compressive stress acting as a pressure sensor. This bubbled carbon material achieves an improved specific capacitance of 268.5 F g⁻¹ at 0.5 A g⁻¹. As a self‐supporting electrode in a symmetrical supercapacitor cell, it still delivers a good specific capacitance of 167 F g⁻¹ at 0.35 A g⁻¹, retaining 92.5% of capacitance over 7000 charge/discharge cycles. Furthermore, the device delivers a maximum energy density of 14.8 Wh Kg⁻¹, demonstrating its immense potential for multi‐functional applications owing to its unique features.

中文翻译：

用于超级电容器和压力感测应用的三维富氮泡沫多孔碳海绵

三维（3D）多孔碳质材料具有许多优点，例如重量轻，表面积大，柔韧性好，因此在储能应用中具有巨大的潜力。在这项工作中，我们报告了通过一种简便，经济高效且可扩展的合成策略，使用市售的厨房海绵制备富含氮的自立式可压缩多孔神经元状碳海绵。独特的神经元状气泡互连碳结构，具有增强的N / O功能，可通过提供足够的离子迁移空间和较大的表面活性位来改善电化学性能。这种材料还在作为压力传感器的压缩应力下提供高电流响应。这种鼓泡的碳材料可实现268.5 F g ^-1的改进的比电容在0.5 A g ^-1下。作为对称超级电容器电池中的自支撑电极，它在0.35 A g ^-1时仍可提供167 F g ^-1的良好比电容，在7000个充电/放电循环中仍可保持92.5％的电容。此外，该设备提供的最大能量密度为14.8 Wh Kg ^-1，由于其独特的功能，展示了其在多功能应用中的巨大潜力。

更新日期：2020-04-30

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