Wood-based activated carbons for supercapacitor electrodes with a sulfuric acid electrolyte

Voļperts, Aleksandrs; Dobele, Gaļina; Zhurinsh, Aivars; Vervikishko, Darya; Школьников, Е. И.; Ozolinsh, Jurijs

doi:10.1016/s1872-5805(17)60125-2

Cited by 45 publications

(14 citation statements)

References 25 publications

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“…Nature materials with well‐defined microstructures, such as woods, animal shells, provide another important source for fabrication of porous carbon which can potentially be modified as advanced electrode scaffolds . These bioderived porous carbon materials are very attractive for application in ESDs it is not only because the raw materials are more sustainable and environmentally friendly, but also their porous structures are very unique (e.g., very uniform pore size and even well‐aligned pore configuration).…”

Section: Controlling Both Etn and Itn In Composite Electrodesmentioning

confidence: 99%

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Wang

Min

et al. 2018

Advanced Materials

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portable electronics, cell phones, electrical vehicles (EVs), aerospace, etc. For advanced batteries, higher and higher energy density and/or power density, long cycling stability, good device safety, and low-cost are the primary goals. Since the energy density is mainly dependent on the specific capacity and loading level of active materials (AMs), AMs usually dominate the volume and weight inside the batteries. Because of this, tremendous efforts have been focused on high-performance AMs. However, the electrochemical performance of energy storage devices (ESDs) is fundamentally determined by a collective contribution or teamwork of all the components: AMs, electrolyte, separator, conductive agent, binders, etc. More importantly, with the increasing interests on high-capacity AMs (e.g., silicon, sulfur, Li-rich cathode, etc.), it becomes very clear that the "traffic system" (i.e., the charge transport system) plays very critical roles in the performance of the high-capacity AMs. Take silicon anode for example, a durable and flexible conductive network inside the electrode composite has been vital for addressing the big volume change issue. In this case, high-performance binders and conductive agent that can generate advanced conductive network are the keys. [2] In addition, with the increasing interests on EVs and flexible electronics, building a powerful and robust charge transport system inside ESDs is an urgent and critical task to support fast charging/ discharging capability and even flexibility of ESDs. In short, with the fast development of energy storage technologies, EVs, cell phones, etc., there is a critical, urgent, and challenging task on building powerful and durable charge transport system in next-generation advanced ESDs. Charge Transport Inside ESDsThe thriving of big cities highly relies on a powerful traffic system that transports the people, foods, products, etc. Similar to this picture, ESDs are powered by the transportation of charges, including both ions and electrons. As illustrated in Figure 1a, one can analogize the charge transport system and AMs in the electrodes of ESDs to the traffic system and buildings (i.e., host system of people), respectively. This analogy example not only help to explain the relationship between The charge transport system in an energy storage device (ESD) fundamentally controls the electrochemical performance and device safety. As the skeleton of the charge transport system, the "traffic" networks connecting the active materials are primary structural factors controlling the transport of ions/electrons. However, with the development of ESDs, it becomes very critical but challenging to build traffic networks with rational structures and mechanical robustness, which can support high energy density, fast charging and discharging capability, cycle stability, safety, and even device flexibility. This is especially true for ESDs with high-capacity active materials (e.g., sulfur and silicon), which show notable volume change during cycling. Therefore, there is an ur...

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Section: Controlling Both Etn and Itn In Composite Electrodesmentioning

confidence: 99%

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Wang

Min

et al. 2018

Advanced Materials

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“…After cooling down to the room temperature, the mixture was neutralized by 2 M HCl solution and washed by distilled water. Finally, the AC was obtained by drying the resulting product at 80 °C for 12 h [17] . CMK-3 was bought from Nanjing Xianfeng Nanomaterial and Technology Co. Ltd. G-CNT was prepared following the method of Prof. Wei' group [18] .…”

Section: Electrode Preparationmentioning

confidence: 99%

Electrochemical process of sulfur in carbon materials from electrode thickness to interlayer

Tang

Sun

Yang

et al. 2019

Journal of Energy Chemistry

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“…High specific surface area enables storing a much bigger amount of charge in the electric double-layer at the phase boundary than is observed for other carbon materials. 14,[99][100][101][102][103]…”

Section: Active Carbons and Carbonized Materialsmentioning

confidence: 99%

Review of the Selected Carbon-Based Materials for Symmetric Supercapacitor Application

Ciszewski

Koszorek

Radko

et al. 2018

Journal of Elec Materi

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Carbon materials are among the most commonly used components of supercapacitor electrodes. Particularly, active carbons are recognized as cheap, available, and easily tailored materials. However, the carbon family, i.e. carbon products and carbon precursors, consists of many members. In this manuscript some of these materials, including laboratory scale-produced carbon gels, carbon nanotubes and carbonized materials, as well as industrial scale-produced graphites, pitches, coke and coal, were compared. Discussion was preceded by a short history of supercapacitors and review of each type of tested material, from early beginning to state-of-the-art. Morphology and structure of the materials were analyzed (specific surface area, pore volume and interlayer spacing determination), to evaluate their applicability in energy storage. Thermal analysis was used to determine the stability and purity. Finally, electrochemical evaluation using cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy was performed. Outcomes of each analytical technique were summarized in different sections.

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Wood-based activated carbons for supercapacitor electrodes with a sulfuric acid electrolyte

Cited by 45 publications

References 25 publications

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Electrochemical process of sulfur in carbon materials from electrode thickness to interlayer

Review of the Selected Carbon-Based Materials for Symmetric Supercapacitor Application

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