Electrical energy generation by squeezing a graphene-based aerogel in an electrolyte

Zhou, Xiaoshuang; Chen, Xin; Zhu, Hao; Dong, Xu; Li, Lvzhou; Cheng, Guanggui; Zhang, Zhong‐Qiang; Hu, Xinghao; Yuan, Ningyi; Ding, Jianning

doi:10.1039/d1nr00544h

Cited by 8 publications

(8 citation statements)

References 44 publications

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“…GO contains a variety of oxygen functional groups, and their interaction with lithium ions can increase the dissociation of lithium salts and thus can increase the ionic conductivity. In addition, it has been reported that it is possible for lithium ions to find low-energy conduction paths along the interface between the carbon-based filler and the polymer matrix . Meanwhile, it can be found from Figure S2 that the mechanical properties of large-sized graphene sheets are relatively better, which is another reason for choosing large-sized graphene sheets.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, it has been reported that it is possible for lithium ions to find lowenergy conduction paths along the interface between the carbon-based filler and the polymer matrix. 30 Meanwhile, it can be found from Figure S2 that the mechanical properties of large-sized graphene sheets are relatively better, which is another reason for choosing large-sized graphene sheets.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Since the conjugated structures of GO itself are disrupted by functionalization, the insulating properties are guaranteed, and the electrolyte application requirements are met. Meanwhile, GO contains an abundant number of oxygen-containing functional groups, exhibiting good affinity for Li ions and promoting the dissociation of Li salts. , The network framework skeleton has two main functions in the process of ion conduction. First, the intricate GO network inside the membrane can make ion-current distribution more uniform to hinder the linear growth of Li dendrites and improve the battery life.…”

Section: Introductionmentioning

confidence: 99%

“…12,18,19 Multiple methods have been adopted to solve the contradiction between ion conductivity and lithium dendrites. One method is to use additives or plasticizers, such as nano-SiO 2 , cationic ionic liquids, and trace amounts of grafted graphene oxide (GO), 14,[20][21][22][23]30 which can reduce the content of PEO crystal regions and increase the free ethylene oxide (EO) segments. However, some nano-scale materials often reduce the acid−base interaction between themselves and the lithium salt due to agglomeration.…”

Section: ■ Introductionmentioning

confidence: 99%

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Graphene Oxide Aerogel Foam Constructed All-Solid Electrolyte Membranes for Lithium Batteries

Zhou

et al. 2022

Langmuir

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With the development of electric vehicles and products, lithium metal batteries with solid-state electrolytes have shown a broad application prospect. However, the uneven deposition of lithium, low ion conductivity, narrow electrochemical window, and high interfacial impedance limit the safety and performance of the solid-state batteries. Herein, we develop a non-ceramic solid electrolyte based on the graphene oxide aerogel frame filling with polyethylene oxide (GSPE). The resulting uniform and resilient framework structure form a continuous Li-ion adsorption zone, which ensures uniform ion-current distribution at the interface while obtaining the relatively high ionic conductivity, effectively preventing the uneven deposition of lithium, and thus greatly improving the battery stability. Comprehensive electrochemical analysis showed that GSPE achieved an ionic conductivity of 4.12 × 10 −4 S cm −1 at 50 °C. The assembled LiFePO 4 (LFP) |GSPE| Li full battery can stably cycle for more than 100 cycles at 0.1 C, and the lithium symmetrical battery can continuously be plating−peeling for more than 600 h at 0.1 mA cm −2 . The method of using the carbon aerogel structure to achieve the uniform deposition of lithium ions has explored a new possible research direction for all-solid-state batteries.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Graphene Oxide Aerogel Foam Constructed All-Solid Electrolyte Membranes for Lithium Batteries

Zhou

et al. 2022

Langmuir

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“…3 f). This specific weight power density even holds advantages when compared to that of state-of-the-art environmental energy harvesters [ 35 – 42 ]. Selected representative reports are summarized in Fig.…”

Section: Resultsmentioning

confidence: 99%

Ultralight Iontronic Triboelectric Mechanoreceptor with High Specific Outputs for Epidermal Electronics

Wang

Guo

et al. 2022

Nano-Micro Lett.

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The pursuit to mimic skin exteroceptive ability has motivated the endeavors for epidermal artificial mechanoreceptors. Artificial mechanoreceptors are required to be highly sensitive to capture imperceptible skin deformations and preferably to be self-powered, breathable, lightweight and deformable to satisfy the prolonged wearing demands. It is still struggling to achieve these traits in single device, as it remains difficult to minimize device architecture without sacrificing the sensitivity or stability. In this article, we present an all-fiber iontronic triboelectric mechanoreceptor (ITM) to fully tackle these challenges, enabled by the high-output mechano-to-electrical energy conversion. The proposed ITM is ultralight, breathable and stretchable and is quite stable under various mechanical deformations. On the one hand, the ITM can achieve a superior instantaneous power density; on the other hand, the ITM shows excellent sensitivity serving as epidermal sensors. Precise health status monitoring is readily implemented by the ITM calibrating by detecting vital signals and physical activities of human bodies. The ITM can also realize acoustic-to-electrical conversion and distinguish voices from different people, and biometric application as a noise dosimeter is demonstrated. The ITM therefore is believed to open new sights in epidermal electronics and skin prosthesis fields.

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Fast, scalable, and environmentally friendly method for production of stand-alone ultrathin reduced graphene oxide paper

Zelenák,

Kováčová,

Moravec

et al. 2023

Carbon

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Electrical energy generation by squeezing a graphene-based aerogel in an electrolyte

Abstract: Mechanical energy harvesters are widely studied because of their diverse applications, such as harvesting of ocean wave energy, self-powered wireless sensors, portable power supplies and so on. To be feasible,...

Cited by 8 publications

References 44 publications

Graphene Oxide Aerogel Foam Constructed All-Solid Electrolyte Membranes for Lithium Batteries

Graphene Oxide Aerogel Foam Constructed All-Solid Electrolyte Membranes for Lithium Batteries

Ultralight Iontronic Triboelectric Mechanoreceptor with High Specific Outputs for Epidermal Electronics

Fast, scalable, and environmentally friendly method for production of stand-alone ultrathin reduced graphene oxide paper

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