Towards High‐Performance Zinc‐Based Hybrid Supercapacitors via Macropores‐Based Charge Storage in Organic Electrolytes

Qiu, Xue; Wang, Nan; Wang, Zhuo; Wang, Fei; Wang, Yonggang

doi:10.1002/anie.202014766

Cited by 103 publications

(47 citation statements)

References 75 publications

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“…In parallel with aqueous zinc electrolyte, nonaqueous counterparts have been explored for ZIBs, e. g., 0.5 M Zn(OTf) 2 in N,N‐dimethylformamide (DMF), [23] and 0.2 M ZnCl 2 in tetraethylammonium tetrafluoroborate‐propylene carbonate (Et 4 NBF 4 ‐PC) [24] . For Zn(OTf) 2 in trimethyl phosphate (TMP)‐dimethyl carbonate (DMC), [25] porous Zn anode consists of ∼5 nm nanostructure was observed after cycling.…”

Section: Electrolyte Regulationmentioning

confidence: 99%

Current Advances on Zn Anodes for Aqueous Zinc‐Ion Batteries

Zeng

Yao

et al. 2021

ChemNanoMat

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As the representative in rechargeable multivalence ion batteries, aqueous zinc ion battery (ZIB) is a promising safe and green solution in the post‐lithium ion era. Though ZIB is being intensively investigated due to its unique merits, the development of ZIB is facing the fundamental obstacles during Zn stripping/plating, namely, zinc dendrite formation, hydrogen evolution, and solid‐electrolyte interface (SEI) formation, which severely affect the cycling stability of ZIB. In this minireview, we aim to provide current aspects of novel approaches to deal with the above critical issues. The approaches are discussed from the perspectives of regulation of electrolyte, construction of Zn anode, and design of surface coating or SEI layer, where their effects on Zn deposition and surface evolution are focused. Last, the challenges and outlooks on the current approaches towards highly reversible Zn anode are presented for the development of ZIB.

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Section: Electrolyte Regulationmentioning

confidence: 99%

Current Advances on Zn Anodes for Aqueous Zinc‐Ion Batteries

Zeng

Yao

et al. 2021

ChemNanoMat

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“…[ 6 ] Contrarily, supercapacitors usually possess high power density and fast charge/discharge rate but poor energy density because the energy storage mechanisms are based on the adsorption/desorption of ions in electrolyte. [ 7,8 ] To achieve innovative energy storage devices having high power density and high energy density, various hybrid strategies have been developed. For instance, lithium‐ion or potassium‐ion hybrid capacitors being composed of a battery anode and a capacitive cathode exhibit the advantages of high energy/power density and long lifespan.…”

Section: Introductionmentioning

confidence: 99%

A High‐Performance Dual‐Ion Battery‐Supercapacitor Hybrid Device Based on LiCl in Ion Liquid Dual‐Salt Electrolyte

Xiong

Guo

Yang

et al. 2021

Advanced Energy Materials

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A dual‐ion battery‐supercapacitor hybrid device (DIB‐SCHD), cleverly integrating a dual‐ion battery (DIB) and a supercapacitor (SC), is expected to endow both the high energy density of dual‐ion battery and the high power density of supercapacitor. Benefitting from the similar features of the electrolyte and symmetrical electrode configuration, a state‐of‐the‐art DIB‐SCHD is developed by using N‐doped micropores‐dominant carbon(N‐MPC) as the electrode and LiCl in a room‐temperature ion liquid hybrid as the electrolyte, which deliver an ultrahigh mass capacitance of 374 F g−1 with a high voltage of 3.5 V and a remarkable specific energy of 208 Wh kg−1 at 1144 W kg−1 and an ultrahigh specific power of 22834 W kg−1 at 77 Wh kg−1. Combined with ex situ characterizations and theoretical calculations, the assembled DIB‐SCHD presents a synergistic energy storage mechanism simultaneously involving ion intercalation/deintercalation and adsorption/desorption processes, which can promote the reaction kinetics and achieve exceptional electrochemical performance. The perfect integration of the dual‐ion battery‐type and supercapacitor‐type electrodes provides a new strategy toward high energy and power density electrochemical energy storage devices.

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“…This phenomenon is mainly due to the undesired Zn corrosion and the Zn dendrites formation [16–20] . Furthermore, most achieved high rate (or high power) performances are based on a low mass‐loading (less than 3 mg cm −2 ) of active material in cathode [21] . However, such low mass‐loading is still far away from the practical level mass‐loading (10 mg cm −2 ) [22] .…”

Section: Introductionmentioning

confidence: 99%

A High‐Voltage Zn–Organic Battery Using a Nonflammable Organic Electrolyte

Wang

Dong

et al. 2021

Angewandte Chemie

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Owing to undesired Zn corrosion and the formation of Zn dendrites in aqueous electrolytes, most of the examples of aqueous Zn batteries with reported excellent performance are achieved with low Zn‐utilization (<0.6 %) in the anode and low mass‐loading (<3 mg cm−2) in the cathode. Herein, we propose a new organic electrolyte for Zn batteries, which contains a zinc trifluoromethanesulfonate (Zn‐TFMS) salt and a mixed solvent consisting of propylene carbonate (PC) and triethyl phosphate (TEP). We demonstrate that this electrolyte with an optimized PC/TEP ratio not only exhibits high ionic conductivity and a wide stable potential window, but also facilitates dendrite‐free Zn plating/stripping. In particular, the TEP solvent makes the electrolyte nonflammable. Finally, a 2 V Zn//polytriphenylamine composite (PTPAn) battery is fabricated with the optimized electrolyte; it shows a high rate and a long lifetime (2400 cycles) even with a high mass‐loading (16 mg cm−2) of PTPAn in the cathode and with a high Zn‐utilization (3.5 %).

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Towards High‐Performance Zinc‐Based Hybrid Supercapacitors via Macropores‐Based Charge Storage in Organic Electrolytes

Cited by 103 publications

References 75 publications

Current Advances on Zn Anodes for Aqueous Zinc‐Ion Batteries

Current Advances on Zn Anodes for Aqueous Zinc‐Ion Batteries

A High‐Performance Dual‐Ion Battery‐Supercapacitor Hybrid Device Based on LiCl in Ion Liquid Dual‐Salt Electrolyte

A High‐Voltage Zn–Organic Battery Using a Nonflammable Organic Electrolyte

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