Weavable, Conductive Yarn-Based NiCo//Zn Textile Battery with High Energy Density and Rate Capability

Huang, Yan; Ip, Wing Shan; Lau, Yuen Ying; Sun, Jinfeng; Zeng, Jie; Yeung, Nga Sze Sea; Ng, Wing Sum; Li, Hongfei; Pei, Zengxia; Xue, Qi; Wang, Yukun; Yu, Jie; Hu, Hong

doi:10.1021/acsnano.7b03322

Cited by 309 publications

(208 citation statements)

References 45 publications

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“…[45] Furthermore, a relatively Adv. 2019, 6,1900151 [16,45,46,51,52,55,57] b) Picture displays the LED lamps powered by quasisolid state Zn//MoO 3 batteries. 2019, 6,1900151 [16,45,46,51,52,55,57] b) Picture displays the LED lamps powered by quasisolid state Zn//MoO 3 batteries.…”

Section: Resultsmentioning

confidence: 99%

Stabilized Molybdenum Trioxide Nanowires as Novel Ultrahigh‐Capacity Cathode for Rechargeable Zinc Ion Battery

et al. 2019

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Exploration of high‐performance cathode materials for rechargeable aqueous Zn ion batteries (ZIBs) is highly desirable. The potential of molybdenum trioxide (MoO 3 ) in other electrochemical energy storage devices has been revealed but held understudied in ZIBs. Herein, a demonstration of orthorhombic MoO 3 as an ultrahigh‐capacity cathode material in ZIBs is presented. The energy storage mechanism of the MoO 3 nanowires based on Zn 2+ intercalation/deintercalation and its electrochemical instability mechanism are particularly investigated and elucidated. The severe capacity decay of the MoO 3 nanowires during charging/discharging cycles arises from the dissolution and the structural collapse of MoO 3 in aqueous electrolyte. To this end, an effective strategy to stabilize MoO 3 nanowires by using a quasi‐solid‐state poly(vinyl alcohol)(PVA)/ZnCl 2 gel electrolyte to replace the aqueous electrolyte is developed. The capacity retention of the assembled ZIBs after 400 charge/discharge cycles at 6.0 A g −1 is significantly boosted, from 27.1% (in aqueous electrolyte) to 70.4% (in gel electrolyte). More remarkably, the stabilized quasi‐solid‐state ZIBs achieve an attracting areal capacity of 2.65 mAh cm −2 and a gravimetric capacity of 241.3 mAh g −1 at 0.4 A g −1 , outperforming most of recently reported ZIBs.

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Section: Resultsmentioning

confidence: 99%

Stabilized Molybdenum Trioxide Nanowires as Novel Ultrahigh‐Capacity Cathode for Rechargeable Zinc Ion Battery

et al. 2019

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“…Organic weak acids, like carboxylic or aminocarboxylic acids, and their salts have been studied for many years as additives to aqueous zinc electrolytes to improve the quality of Zn deposition and suppress the HER . These acids are often polyprotic, the conjugate bases are negatively charged, and they can be combined with a positive counter‐ion.…”

Section: Electrolyte Design Methodsmentioning

confidence: 99%

Designing Aqueous Organic Electrolytes for Zinc–Air Batteries: Method, Simulation, and Validation

Clark

Mainar

Iruin

et al. 2020

Advanced Energy Materials

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Aqueous zinc–air batteries (ZABs) are a low‐cost, safe, and sustainable technology for stationary energy storage. ZABs with pH‐buffered near‐neutral electrolytes have the potential for longer lifetime compared to traditional alkaline ZABs due to the slower absorption of carbonates at nonalkaline pH values. However, existing near‐neutral electrolytes often contain halide salts, which are corrosive and threaten the precipitation of ZnO as the dominant discharge product. This paper presents a method for designing halide‐free aqueous ZAB electrolytes using thermodynamic descriptors to computationally screen components. The dynamic performance of a ZAB with one possible halide‐free aqueous electrolyte based on organic salts is simulated using an advanced method of continuum modeling, and the results are validated by experiments. X‐ray diffraction, scanning electron microscopy, and energy dispersive X‐ray spectroscopy measurements of Zn electrodes show that ZnO is the dominant discharge product, and operando pH measurements confirm the stability of the electrolyte pH during cell cycling. Long‐term full cell cycling tests are performed, and rotating ring disk electrode measurements elucidate the mechanism of oxygen reduction reaction and oxygen evolution reaction. The analysis shows that aqueous electrolytes containing organic salts could be a promising field of research for zinc‐based batteries, due to their Zn2+ chelating and pH buffering properties. The remaining challenges including the electrochemical stability of the electrolyte components are discussed.

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“…[52] Briefly, the rGO/NW (20 s) was directly regarded as the working electrode with immersing into 1 m ZnSO 4 solution at −0.8 V at room temperature for 240 s, while the Zn foil is the counter electrode. [52] Briefly, the rGO/NW (20 s) was directly regarded as the working electrode with immersing into 1 m ZnSO 4 solution at −0.8 V at room temperature for 240 s, while the Zn foil is the counter electrode.…”

Section: Methodsmentioning

confidence: 99%

Biomimetic and Radially Symmetric Graphene Aerogel for Flexible Electronics

Gao

Fan

Zhou

et al. 2019

Adv Elect Materials

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Developing a generalized route to effectively fabricate periodic mechanically flexible graphene aerogels across several size orders and whole structural integrity on a large scale for flexible electronics is still a challenge. Herein, inspired by bamboo's natural hierarchical structure, a general method is developed to effectively fabricate biomimetic cellular graphene fibers using hydrogen bubbles and ice simultaneously as templates, whose whole size ranges from micro to several centimeters. Owing to its superior mechanical flexibility demonstrated by the in situ scanning electron microscope test and intrinsically good electrical conductivity, its potential in flexible electronics such as sensors, supercapacitors, and Ni–Zn batteries is carefully investigated. It not only shows superior sensitivity in the monitoring of the pulse pressure in sensor devices but also directly serves as a promising binder, flexible scaffold, and conductive additive, as well as extra active material in the energy storage device without any extra additives. This strategy can also be extended to fabricate other configurations of graphene aerogels such as spring‐like type and bulk film, able to serve as the next generation of intelligent infrastructure for achieving multifunctional structural and functional tasks.

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Weavable, Conductive Yarn-Based NiCo//Zn Textile Battery with High Energy Density and Rate Capability

Cited by 309 publications

References 45 publications

Stabilized Molybdenum Trioxide Nanowires as Novel Ultrahigh‐Capacity Cathode for Rechargeable Zinc Ion Battery

Stabilized Molybdenum Trioxide Nanowires as Novel Ultrahigh‐Capacity Cathode for Rechargeable Zinc Ion Battery

Designing Aqueous Organic Electrolytes for Zinc–Air Batteries: Method, Simulation, and Validation

Biomimetic and Radially Symmetric Graphene Aerogel for Flexible Electronics

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