Abstract All‐polymer and paper‐based energy storage devices have significant inherent advantages in comparison with many currently employed batteries supercapacitors regarding environmental friendliness, flexibility, cost versatility. The research within this field is undergoing an exciting development as new polymers, composites are being developed. In report, we review recent progress concerning the of flexible based on electronically conducting polymers cellulose containing particular...

Conducting polymers for battery applications have been subject to numerous investigations during the last two decades. However, functional charging rates and cycling stabilities so far found be insufficient practical applications. These shortcomings can, at least partially, explained by fact that thick layers of conducting used obtain sufficient capacities batteries. In present letter, we introduce a novel nanostructured high-surface area electrode material energy storage composed cellulose...

It is demonstrated that it possible to coat the individual fibers of wood-based nanocellulose with polypyrrole using in situ chemical polymerization obtain an electrically conducting continuous high-surface-area composite. The experimental results indicate high surface area water dispersed material, a large extent, maintained upon normal drying without use any solvent exchange. Thus, employed on microfibrillated cellulose (MFC) nanofibers hydrogel gives rise composite, structure which—unlike...

We demonstrate that surface modified nanocellulose fibers (NCFs) can be used as substrates to synthesize supercapacitor electrodes with the highest full electrode-normalized gravimetric (127 F g(-1)) and volumetric (122 cm(-3)) capacitances at high current densities (300 mA cm(-2) ≈ 33 A until date reported for conducting polymer-based active mass loadings 9 mg cm(-2). By introducing quaternary amine groups on of NCFs prior polypyrrole (PPy) polymerization, macropore volume formed PPy-NCF...

One of the biggest challenges we will face over next few decades is finding a way to power future while maintaining strong socioeconomic growth and clean environment. A transition from use fossil fuels renewable energy sources expected. Cellulose, most abundant natural biopolymer on earth, unique, sustainable, functional material with exciting properties: it low‐cost has hierarchical fibrous structures, high surface area, thermal stability, hydrophilicity, biocompatibility, mechanical...

Significant capacity losses due to lithium trapping are demonstrated for alloy forming anode materials such as silicon and tin.

Abstract Poor cycling stability and safety concerns regarding lithium (Li) metal anodes are two major issues preventing the commercialization of high‐energy density Li metal‐based batteries. Herein, a novel tri‐layer separator design that significantly enhances batteries is presented. A thin, thermally stable, flexible, hydrophilic cellulose nanofiber layer, produced using straightforward paper‐making process, directly laminated on each side plasma‐treated polyethylene (PE) separator. The...

The formation of self-assembled chemisorbed layers cystamine, cysteamine, and 4-aminothiophenol on gold has been studied by XPS voltammetry. These compounds, often used in the preparation biosensors modified electrodes, are shown to yield surface coverages approximately 80% that a octadecanethiol monolayer within 5 min millimolar aqueous ethanolic solutions. results experiments reveal shoulder S 2p3/2 peak (situated at 162.1 eV) develops 161.3 eV upon increasing adsorption time from minutes...

A nanostructured three-dimensional (3D) microbattery has been produced and cycled in a Li-ion battery. It consists of current collector aluminum nanorods, uniform layer 17 nm TiO2 covering the nanorods made using ALD, an electrolyte metallic lithium counter electrode. The battery is electrochemically more than 50 times. increase total capacity 10 times when 3D architechture compared to 2D system for same footprint area.

Galvanostatically electrodeposited coatings of pure Sb or co-deposited and Sb2O3 nanoparticles, prepared from antimony tartrate solutions, were studied as anode materials in Li-ion batteries. It is demonstrated that the co-deposition 20−25% (w/w) results a local pH increase at cathode (due to protonation liberated tartrate) poorly buffered solutions. This causes precipitation nanoparticles inclusion some particles deposit where they become coated with protecting layer Sb....

Abstract Composites of polypyrrole (PPy) and Cladophora nanocellulose, reinforced with 8 μm‐thick chopped carbon filaments, can be used as electrode materials to obtain paper‐based energy‐storage devices unprecedented performance at high charge discharge rates. Charge capacities more than 200 C g −1 are obtained for electrodes potential scan rates 500 mV s , whereas cell capacitances ∼60–70 F reached symmetric supercapacitor cells up 3.0 (i.e.,0.48 cm −2 ) when charged 0.6 V using current...

This work presents conductive aerogel composites of nanofibrillated cellulose (NFC) and polypyrrole (PPy) with tunable structural electrochemical properties. The are prepared by chemically polymerizing pyrrole onto TEMPO-oxidized nanofibers dispersed in water the various nanostructures obtained employing different drying methods. Supercritical CO2 is shown to generate high porosity largest surface area (246 m2 g−1) reported so far for a conducting polymer–paper based material, whereas...

Abstract The interfacial reactions in sodium‐ion batteries (SIBs) are not well understood yet. formation of a stable solid electrolyte interphase (SEI) SIBs is still challenging due to the higher solubility SEI components compared lithium analogues. This study therefore aims shed light on dissolution influenced by chemistry. By conducting electrochemical tests with extended open circuit pauses, and using surface spectroscopy, we determine extent self‐discharge dissolution. Instead...

A robust and flexible nanocellulose coupled PPy@GO paper electrode is straightforwardly prepared, exhibiting a capacitance of 198 F cm⁻³(301 cm⁻³based on PPy) ever reported for polymer-based electrodes.

Nanostructured flexible PEDOT paper can be constructed by straightforward chemical polymerization on nanocellulose building blocks, yielding a high surface area, low sheet resistance and outstanding capacitive performance.

Multicomponent carbide thin films of (CrNbTaTiW)C (30–40 at.% C) with different metal contents were deposited at temperatures using non-reactive DC magnetron sputtering. The lattice distortion for the was estimated to vary from about 3 5%. Most crystallized in cubic B1 structure but Ta/W-rich 600 °C exhibited a tetragonal distortion. X-ray diffraction results show that near-equimolar strong (111) texture. In contrast, shift (100) texture 450 °C. in-plane relationship determined...

Highly ordered anodic TiO2 nanotube arrays with a tube length of 9 μm are shown to provide areal capacities 0.24 mA h cm−2 (i.e. 96 g−1) at charge/discharge current density 2.5 (corresponding rate 5 C) and 0.46 184 0.05 cm−2, when used as 3D free-standing anodes in Li-ion microbatteries. The present electrodes, which could be cycled for 500 cycles only 6% loss capacity, exhibited significantly higher energy power densities, well an excellent cycling stability compared previously reported...

ConspectusBecause of its natural abundance, hierarchical fibrous structure, mechanical flexibility, potential for chemical modification, biocompatibility, renewability, and cellulose is one the most promising green materials a bio-based future sustainable economy. Cellulose derived from wood or bacteria has dominated industrial market been developed to produce number advanced applications in energy storage, environmental, biotechnology areas. However, Cladophora (CC) extracted algae...

Rational design of high capacity, flexible Si paper anodes based on 3D conductive<italic>Cladophora</italic>nanocellulose matrix.

It is demonstrated that 3D nanostructured polypyrrole (3D PPy) nanocomposites can be reinforced with PPy covered nanocellulose (PPy@nanocellulose) fibres to yield freestanding, mechanically strong and porosity optimised electrodes large surface areas. Such PPy@nanocellulose materials employed as free-standing paper-like in symmetric energy storage devices exhibiting cell capacitances of 46 F g(-1), corresponding specific electrode up ∼185 g(-1) based on the weight electrode, 5.5 cm(-2) at a...

Abstract Owing to its resource‐abundant and favorable theoretical capacity, sodium metal is regarded as a promising anode material for batteries. However, uncontrolled Na plating/stripping, including dendrite growth during cycling, has hindered practical application. Herein, sodiophilic, thin, flexible silver nanopaper (AgNP) designed based on interpenetrated nanocellulose nanowires used dendrite‐free electrode. Due network of highly conducting nanowire (0.6 Ω sq −1 , 8200 S cm ), the...