Multifunctional fullerene protective layer for dendrite-free Zn metal anode

Ge, Zhaofei; Zhang, Hao; Tian, Jiazhuang; Wu, Jiae; Xu, Yan; Deng, Wentao; Zou, Guoqiang; He, Dan; Hou, Hongshuai; Wang, Chunru; Ji, Xiaobo

doi:10.1016/j.cej.2023.143054

Cited by 18 publications

(2 citation statements)

References 52 publications

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“…Within the realm of organic small molecules, other functional compounds have also demonstrated good functionality. 124–127 For instance, Yu et al proposed that hexamethylenetetramine (HMTA) forms a SEI layer on the Zn metal anode through in situ adsorption, where N atoms with a large number of electron lone pairs exhibit high affinity for Zn ions (Fig. 9(c)).…”

Section: Organic Materials For Interfacial Layersmentioning

confidence: 99%

Organic solid–electrolyte interface layers for Zn metal anodes

He,

Huang,

Xiong

et al. 2024

Chem. Commun.

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Section: Organic Materials For Interfacial Layersmentioning

confidence: 99%

Organic solid–electrolyte interface layers for Zn metal anodes

He,

Huang,

Xiong

et al. 2024

Chem. Commun.

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“…Carbon dots (CDs), thanks to their ultrasmall size and abundant functional groups, had special physicochemical properties and were widely used in electrochemical energy storage applications. [21][22][23][24][25][26][27][28][29][30] The complexity of the synthesis process and the low yield of CDs had limited its development on a large scale, but our group reported an efficient and economical synthesis of kilogram-scale CDs by aldol condensation that perfectly avoided these disadvantages. [31] And concretely, the utilization of this type CDs for pore creation was undeniably innovative and valuable, owing to their diminutive size and low polymerization degree, as well as their propensity to deeply infiltrate materials during hydrothermal processes and decomposed at high temperatures, thereby interacting with the interior of carbon materials to generate closed pore structures upon incineration.…”

Section: Introductionmentioning

confidence: 99%

Rationally Designing Closed Pore Structure by Carbon Dots to Evoke Sodium Storage Sites of Hard Carbon in Low‐Potential Region

Huang,

Zhong,

et al. 2023

Adv Funct Materials

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Hard carbon (HC) is widely regarded as the most promising anode material for sodium‐ion batteries (SIBs). For improving the sodium storage capacity of HC anode, current research primarily focuses on the high‐voltage slope region. Actually, increasing the storage capability in the low‐voltage plateau region is more important for enhancing the energy density of full cells. Therefore, in this study, HC anode with rich closed pore structure is designed and constructed with the help of carbon dots (CDs), and it is demonstrated that the presence of closed pore structure can provide more sodium storage sites in the plateau region, resulting in an obvious increase of sodium storage capacity. Moreover, the pore‐filling and intercalation mechanism for sodium storage in plateau region is revealed by in situ Raman spectroscopy and ex situ transmission electron microscopy (TEM). It is worth noting that the increase in capacity induced by closed pore‐filling is not accompanied by a decrease in initial coulombic efficiency (ICE), due to the fact that the introduction of closed pores does not increase the contact area between electrode and electrolyte. This work presents novel concepts for the structural design of HC and provides valuable insights into the effective utilization of plateau region in SIBs.

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Integration of Pre‐Activated Carbon‐Fabric Layers for Ampere‐Hour‐Scale Quasi‐Solid‐State Pouch‐Type Zinc–Air Batteries

Lee,

Ahn

2024

Adv Funct Materials

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Achieving ampere‐hour‐scale capacities in pouch‐type zinc–air batteries (ZABs) requires optimizing key factors, such as preventing inactive ZnO dendrite formation on zinc anodes and enhancing catalytic activity with efficient gas diffusion in the air cathode. Here, a pioneering flexible, large‐area, ampere‐hour‐scale quasi‐solid‐state ZAB is introduced, addressing these challenges through a novel preactivation strategy combined with a layered assembly approach. This method employs mass‐producible fibrous carbon textiles to form flexible fabrics that separate functions within multi‐stacked layers. Preactivated carbon fabric layers, independently functionalized and easily reassembled, enhance scalability and manufacturability. A bilayer catalytic air electrode, incorporating hydrophilic NiFe hydroxide and hydrophobic FeNC regions, ensures efficient charge and mass transfer, significantly boosting catalytic activity. To prevent dendrite formation on the zinc anode, a zincophilic copper interlayer is implemented. This configuration supports rapid, stable charge–discharge cycles at a high current density of 20 mA cm⁻2. The large‐area stacked bipolar structure pouch cells, exceeding 36 cm2, achieve a discharge capacity of up to 2500 mAh, maintaining high cycle stability through discharge–charge cycles with 200 mAh per cycle. This approach significantly enhances the scalability, manufacturability, and production potential of ultrahigh‐capacity wearable ZABs, making them practical for widespread application in various portable and flexible devices.

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Multifunctional fullerene protective layer for dendrite-free Zn metal anode

Cited by 18 publications

References 52 publications

Organic solid–electrolyte interface layers for Zn metal anodes

Organic solid–electrolyte interface layers for Zn metal anodes

Rationally Designing Closed Pore Structure by Carbon Dots to Evoke Sodium Storage Sites of Hard Carbon in Low‐Potential Region

Integration of Pre‐Activated Carbon‐Fabric Layers for Ampere‐Hour‐Scale Quasi‐Solid‐State Pouch‐Type Zinc–Air Batteries

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