A Nonaqueous Na-Ion Hybrid Micro-Supercapacitor with Wide Potential Window and Ultrahigh Areal Energy Density

Zhang P, Wang L, Wang F, Tan D, Wang G, Yang S, Yu M, Zhang J, Feng X (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Batteries & Supercaps Wiley-VCH Verlag

Book Volume: 2

Pages Range: 918-923

Journal Issue: 11

DOI: 10.1002/batt.201900079

Abstract

The increasing demand on smart miniaturized electronics has greatly boosted the development of high-performance micro-supercapacitors (MSCs). However, the unsatisfied electrochemical performance (e. g., narrow potential window, low areal energy density) impedes their wide applications. Here, we demonstrate a novel type of nonaqueous Na-ion hybrid MSC, using VS2 nanosheets grown on electrochemically exfoliated graphene (VS2@EG) as the negative electrode and activated carbon as the positive electrode in nonaqueous sodium-ion electrolyte. Such constructed nonaqueous Na-ion hybrid MSCs show a remarkable areal capacitance of 110.7 mF cm−2 at 0.2 mA cm−2 in a wide potential range of 0.01–3.5 V and an outstanding areal energy density of 188.3 μWh cm−2. Besides, an impressive cycling stability up to 5000 cycles without noticeable decay is also achieved for the nonaqueous Na-ion hybrid MSCs. This new hybrid MSC holds great potential application in on-chip electronics.

Involved external institutions

Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Zhang, P., Wang, L., Wang, F., Tan, D., Wang, G., Yang, S.,... Feng, X. (2019). A Nonaqueous Na-Ion Hybrid Micro-Supercapacitor with Wide Potential Window and Ultrahigh Areal Energy Density. Batteries & Supercaps, 2(11), 918-923. https://doi.org/10.1002/batt.201900079

MLA:

Zhang, Panpan, et al. "A Nonaqueous Na-Ion Hybrid Micro-Supercapacitor with Wide Potential Window and Ultrahigh Areal Energy Density." Batteries & Supercaps 2.11 (2019): 918-923.

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