Heteroatom-Engineered Fibrous Biocarbon Electrodes for the Superior Performance of Microsupercapacitors

IF 5.5 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-04-29 DOI:10.1021/acsaem.5c0029310.1021/acsaem.5c00293

Prerna Sinha, Lingaraj Pradhan, Bhuvaneshwari Balasubramaniam*, Anshuman Tyagi, Aditya Goswami, Selvan Bellan, Ashutosh Sharma*, Akhila Kumar Sahu and Bikash Kumar Jena*,

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Abstract

A unique pyrolysis approach has been opted for the heteroengineering of green fibrous biocarbon. An in-depth electrochemical study facilitated the identification of the high-performing nitrogen-doped carbon (HDC-N) electrode as a favorable candidate for constructing a symmetric supercapacitor device. It exhibits a specific capacitance value of 150 F g^–1 at 1 A g^–1 and has an outstanding rate capability of 77% at 10 A g^–1. The flexible/wearable microsupercapacitor (FWMSC) device constructed with an HDC-N electrode delivers an excellent energy density by showcasing 79.9 mW h cm^–2 with respect to a power density of 2.98 W cm^–2. The miniaturized FWMSC device shows superior cyclic stability up to 9000th cyclic voltammetry (CV) cycles with excellent mechanical flexibility under different bending angles. This study advocates for the essentiality of green pathways in designing microsupercapacitor electrodes.

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用于微超级电容器优异性能的杂原子工程纤维生物碳电极

采用一种独特的热解方法制备绿色纤维生物炭。深入的电化学研究有助于确定高性能氮掺杂碳（HDC-N）电极作为构建对称超级电容器器件的有利候选者。它在1a g-1时的比电容值为150f - 1，在10a g-1时具有77%的出色倍率能力。采用HDC-N电极构建的柔性/可穿戴微型超级电容器（FWMSC）器件的能量密度为79.9 mW h cm-2，而功率密度为2.98 W cm-2。小型化的FWMSC装置具有优异的循环稳定性，高达9000次循环伏安（CV）循环，在不同弯曲角度下具有优异的机械灵活性。本研究提倡绿色路径在设计微超级电容器电极中的重要性。

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.