Zn-Ion Hybrid Micro-Supercapacitors with Ultrahigh Areal Energy Density and Long-Term Durability

Panpan Zhang; Yang Li; Gang Wang; Faxing Wang; Sheng Yang; Feng Zhu; Xiaodong Zhuang; Oliver G Schmidt; Xinliang Feng

doi:10.1002/adma.201806005

Zn-Ion Hybrid Micro-Supercapacitors with Ultrahigh Areal Energy Density and Long-Term Durability

Adv Mater. 2019 Jan;31(3):e1806005. doi: 10.1002/adma.201806005. Epub 2018 Nov 27.

Authors

Panpan Zhang^{1

2}, Yang Li^{3

4}, Gang Wang^{1

2}, Faxing Wang^{1

2}, Sheng Yang^{1

2}, Feng Zhu^{3

4}, Xiaodong Zhuang^{1

2

5}, Oliver G Schmidt^{2

3

4}, Xinliang Feng^{1

2

5}

Affiliations

¹ Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany.
² Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062, Dresden, Germany.
³ Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany.
⁴ Institute for Integrative Nanosciences, IFW Dresden, 01069, Dresden, Germany.
⁵ The State Key Laboratory of Metal Matrix Composites and Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Dongchuan Road 800, 200240, Shanghai, China.

PMID: 30480352
DOI: 10.1002/adma.201806005

Abstract

On-chip micro-supercapacitors (MSCs), as promising power candidates for microdevices, typically exhibit high power density, large charge/discharge rates, and long cycling lifetimes. However, as for most reported MSCs, the unsatisfactory areal energy density (<10 µWh cm^-2 ) still hinders their practical applications. Herein, a new-type Zn-ion hybrid MSC with ultrahigh areal energy density and long-term durability is demonstrated. Benefiting from fast ion adsorption/desorption on the capacitor-type activated-carbon cathode and reversible Zn stripping/plating on the battery-type electrodeposited Zn-nanosheet anode, the fabricated Zn-ion hybrid MSCs exhibit remarkable areal capacitance of 1297 mF cm^-2 at 0.16 mA cm^-2 (259.4 F g^-1 at a current density of 0.05 A g^-1 ), landmark areal energy density (115.4 µWh cm^-2 at 0.16 mW cm^-2 ), and a superb cycling stability without noticeable decay after 10 000 cycles. This work will inspire the fabrication and development of new high-performance microenergy devices based on novel device design.

Keywords: Zn-ion; durability; energy density; hybrid micro-supercapacitors.

Abstract

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