The present application belongs to a technical field of modifying natural polymer materials, provides a high-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof. Raw materials are fed into a reactor, and the high-viscosity lithium carboxymethyl cellulose is prepared through an alkalization reaction, an etherification reaction, an acidification reaction and a substitution reaction. The prepared high-viscosity lithium carboxymethyl cellulose can be used for preparing a negative electrode plate of a lithium-ion battery. Compared with the existing lithium carboxymethyl cellulose, the high-viscosity lithium carboxymethyl cellulose provided by the present application can not only reduce an application amount in preparing a negative electrode plate of a lithium-ion battery so as to save a using cost, but also promote an electrochemical performance of the material in combination with a sodium lignin sulfonate.

There is provided a composite comprising a) a short chain sulfur; and b) a carbon-supported conductive polymer such as polyacrylonitrile, wherein sulfur atoms of said short chain sulfur are covalently linked to the conductive polymer of said carbon-supported conductive polymer via a C—S bond. A method of preparing said composite comprising polymerizing a plurality of monomers in the presence of a carbon scaffold, mixing elemental sulfur and heating the mixture to obtain said composite is also disclosed. An electrochemical cell comprising said composite as cathode, a sodium anode and a liquid electrolyte such as sodium trifluoromethanesulfonate dissolved in a mixture of solvents is disclosed.

The present disclosure relates to an organic electrode manufactured into a non-woven type by using an electro-spin method, a stretchable battery which is stretchable and shrinkable, utilizing same, and a method of manufacturing the battery.

A nitrogen-containing carbon material includes carbon atoms, nitrogen atoms, and halogen atoms. The nitrogen-containing carbon material has a ratio of a number of moles of pyridinic nitrogen atoms to a total number of moles of the nitrogen atoms that is higher than 59% and a total content ratio of the nitrogen atoms with respect to the nitrogen-containing carbon material that is 7 at % or higher. The nitrogen-containing carbon material includes a fused polycyclic aromatic moiety formed by condensation of three or more aromatic rings, and the fused polycyclic aromatic moiety includes a partial structure for two pyridinic nitrogen atoms to be linked to each other through two carbon atoms.

An aqueous rechargeable zinc-iodine battery includes an aqueous electrolyte solution including zinc-iodine; a zinc anode; and a double-layered cathode having: a conductive substrate, and an adsorptive layer disposed over the conductive substrate.

Here is described an aluminum-ion battery technology having an electrolyte comprising an aluminum trichloride (Al—Cl3)/trimethylamine hydrochloride ionic liquid, aluminum metal as the anode material, and a compatible cathode active material. A wide variety of applications ranging from energy storage in consumer electronics to electric vehicles and to grid storage is also considered.

A polymer includes a repeating unit represented by at least one of Formula 1a or Formula 1b: ##STR00001## wherein, in Formulae 1a or 1b, CY.sub.1 is a group represented by at least one of Formula 1-2 or Formula 1-4, CY.sub.2 is a group represented by Formula 1-3, and L.sub.1, L.sub.2, a1, and a2 are defined the same as in the specification, and ##STR00002## in Formulae 1-2, Formula 1-3, or 1-4, X, Y, R.sub.1, R.sub.2, R.sub.11 to R.sub.14, b1, b2, R.sub.21, R.sub.22, b21, b22, Z.sub.1, Z.sub.2, c1, and c2 are defined the same as in the specification.

An anode passivation slurry of anti-dendritic lithium and a method of preparation are provided. The method comprises the steps of dissolving a divalent copper metal compound and a non-ionic polymer to obtain a first solution, dissolving trimesic acid to obtain a second solution, and mixing the first and second solutions to obtain a copper-based metal-organic framework. The dried precursor are mixed with ionic liquid, which has contained a first lithium salt, and then dried to obtain an anion impregnated copper-based metal-organic framework. Thereafter, an anion impregnated copper-based metal-organic framework, a second lithium salt, polymer materials, and a second solvent are mixed to obtain the anode passivation slurry. The anode passivation slurry homogenizes the concentration of conduction of lithium ions and improves ionic conductivity, reducing the formation of lithium dendrites, and improving the cycle life of batteries. A battery with the anode passivation slurry dried on an anode is also disclosed.

Composition includes: (A) a mixed oxide of lithium, nickel, manganese and cobalt and (B) a fluorinated anion salt of a polycationic polymer. The fluorinated anion salt of the polycationic polymer contains repeating units represented by one of formula (1) or formula (2):

##STR00001##

wherein, in the formula (1), N.sup.+ is a nitrogen atom constituting a quaternary ammonium cation, R.sup.1 and R.sup.2 being each independently a substituent containing a carbon atom bonded to the nitrogen atom,

##STR00002##

wherein, in the formula (2), R.sup.3 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

This disclosure provides systems, methods, and apparatus related to thermal energy storage with phase change materials having an adjustable transition temperature. In one aspect, a method includes providing a device. The devices includes a phase change material, a salt dissolved in the phase change material, and an anode and a cathode disposed in the phase change material. The phase change material changes from a solid to a liquid at a first temperature when the salt is dissolved in the phase change material. A voltage is applied to the anode and the cathode to substantially remove the salt from the phase change material. The phase change material changes from the solid to the liquid at a second temperature when the salt is substantially removed from the phase change material, with the first temperature being a lower temperature than the second temperature.