The Applications of Water-in-Salt Electrolytes in Electrochemical Energy Storage Devices

A review on trends in lignin extraction and valorization of lignocellulosic biomass for energy applications

Biomass-derived carbonaceous materials have been deemed to be one of the up-and-coming electrode materials for high-performance energy storage systems due to their cost-neutral abundant resources, sustainable nature, easy synthesis methods, and environmentally benign features. In this work, various graphene-like porous carbon networks (GPCs) with three-dimensional (3D) hierarchically ordered “ion highways” have been synthesized by the carbonization/activation of orange-peel wastes for use as an electrode material in high-energy supercapacitors. The porous structures and surface morphologies of the GPCs were rationally fine-tuned as a function of the activation agent ratio. The prepared GPCs offered superior specific surface area in addition to a 3D porous structure with a fine-tuned pore size distribution. The electrochemical behaviors of all the GPCs were evaluated in 6.0 M KOH aqueous electrolyte via a three-electrode electrochemical setup. Owing to their synergistic characteristics, including superior specific surface area (1150 m2 g−1), large pore volume, and fine-tuned 3D porous architecture, GPC-3.0 (synthesized with a KOH : GPC ratio of 3.0, by wt.) exhibited the best capacitive behavior amongst the studied GPCs. The 3D hierarchically ordered architecture acts like well-designed ion highways that boost electron transportation, thereby enhancing electrochemical energy storage. A coin-cell-type symmetrical supercapacitor based on GPC-3.0 was tested in both 1.0 M Na2SO4 (salt-in-water) and 12.0 m NaNO3 (water-in-salt) electrolytes. The supercapacitor cell based on the water-in-salt electrolyte offered a wide operating voltage of 2.3 V. The obtained energy density and power density values were comparable to those of commercial high-performance electrical double-layer capacitors. Such notable findings will shed light on next-generation high-rate electrochemical energy storage systems based on biomass-derived carbonaceous materials.

Sustainable electrode material for high-energy supercapacitor: biomass-derived graphene-like porous carbon with three-dimensional hierarchically ordered ion highways.

Aqueous Supercapacitor with Ultrahigh Voltage Window Beyond 2.0 Volt

Recent advances in dual-carbon based electrochemical energy storage devices

High-Performance and Ultra-Stable Aqueous Supercapacitors Based on a Green and Low-Cost Water-In-Salt Electrolyte

High voltage supercapacitor based on nonflammable high-concentration-ionic liquid electrolyte

The invention provides a bromine carbon phenolic aldehyde epoxy powder fire-retardant coating and preparation method, comprising(by weight percentage): bromine carbon phenolic aldehyde epoxy resin 25.0-50.0%, E-12 epoxy resin 5.0-20.0%, ammonium polyphosphate 12.0-21.0%, melamine 8.0-14.0%, di-pentaerythritol 4.0-7.0%, curing agent 10.0-15.0%, curing promoter0.02-0.05%, flow agent 0.5-2.0%, benzoin 0.3-0.5%, titanium dioxide 5.0-10.0%. The preparation method comprises: getting the materials ready; mixing bromine carbon phenolic aldehyde epoxy resin, E-12 epoxy resin, curing agent, flow agent for 1-3 minutes at high speed; mixing benzoin and titanium dioxide for 3-5 minutes; adding ammonium polyphosphate, melamine, di-pentaerythritol and curing promoter for 1-2 minutes; adding the mixture into the extruder to fuse and extrude, finally the fused material being obtained; tabletting the fuse material by tablet machine, cooling, crushing, grinding, screening to obtain the bromine carbon phenolic aldehyde epoxy powder fire-retardant coating.

Bromine-carbon pnenolic aldehyde epoxy powder fire-proof paint and preparation method thereof

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High-Performance and Ultra-Stable Aqueous Supercapacitors Based on a Green and Low-Cost Water-In-Salt Electrolyte

High voltage supercapacitor based on nonflammable high-concentration-ionic liquid electrolyte

Bromine-carbon pnenolic aldehyde epoxy powder fire-proof paint and preparation method thereof