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

Medientyp: E-Artikel

Titel: Zn‐Ion Hybrid Micro‐Supercapacitors with Ultrahigh Areal Energy Density and Long‐Term Durability

Beteiligte: Zhang, Panpan [Verfasser:in]; Li, Yang [Verfasser:in]; Wang, Gang [Verfasser:in]; Wang, Faxing [Verfasser:in]; Yang, Sheng [Verfasser:in]; Zhu, Feng [Verfasser:in]; Zhuang, Xiaodong [Verfasser:in]; Schmidt, Oliver G. [Verfasser:in]; Feng, Xinliang [Verfasser:in]

Erschienen: Weinheim: WILEY‐VCH, [2019]

Sprache: Englisch; Deutsch

DOI: 10.1002/adma.201806005

RVK-Notation: VA 1120 : Zeitschriften

Schlagwörter: Zn‐ion ; Haltbarkeit ; durability ; Zn-Ion ; energy density ; hybrid micro‐supercapacitors ; hybride Mikrosuperkondensatoren ; Energiedichte

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Beschreibung: 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.

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Rechte-/Nutzungshinweise: Urheberrechtsschutz

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