Disclosed herein are improved methods and devices for recycling lithium cathodes from batteries using a Soxhlet extractor.

Described herein is a novel polymerization method that is useful for synthesizing regioregular conjugated polymers from electron rich aromatic monomers and oligomers of electron rich aromatic monomers.

A method for generating hydrogen and making graphenic carbon particles is disclosed comprising introducing an inert carrier gas and a hydrocarbon precursor material comprising a material capable of forming a two-carbon-fragment species and/or methane into a thermal zone, heating the hydrocarbon precursor material in the thermal zone to decompose the hydrocarbon precursor material and form the hydrogen and the graphenic carbon particles, and contacting the gaseous stream with a quench stream. Graphenic carbon particles having an average aspect ratio greater than 3:1, a B.E.T. specific surface area of from 70 to 1000 square meters per gram, and a Raman spectroscopy 2D/G peak ratio of at least 1:1.

Provided are an additive represented by Chemical Formula 1, an electrolyte for a lithium secondary battery including same, and a lithium secondary battery. The details of Chemical Formula 1 are as described in the specification.

An electrochemical device which includes an electrode plate and a porous layer formed on a surface of the electrode plate. The porous layer includes nanofibers and inorganic particles. The nanofibers and the inorganic particles are bonded together by a crosslinker. In addition, an electronic device, which includes this electrochemical device.

A negative electrode plate includes a current collector and an active substance layer provided on the current collector, where the active substance layer includes a silicon-based material, and a proportion by mass of element silicon in the active substance layer has a minimum value X1 and a maximum value X2 among different locations of a same area size, where a value of X1/X2 is M, and M≥0.7; and a weight loss rate of the active substance layer under thermogravimetric (TG) analysis within 800° C. has a minimum value Y1 and a maximum value Y2 among different locations of a same area size, where a value of Y1/Y2 is N, and N≥0.7. In this disclosure, the silicon-based material and a binder in the active substance layer are uniformly dispersed, improving C-rate performance and cycling performance of the electrochemical apparatus and reducing swelling of an electrode assembly.

The present invention relates to a negative electrode for a secondary battery which comprises a negative electrode collector, a negative electrode active material layer formed on the negative electrode collector, and a lithium metal layer, wherein an adhesive layer is disposed between the negative electrode active material layer and the lithium metal layer, and the lithium metal layer comprises lithium and metal oxide in a weight ratio of 50:50 to 99:1.

Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent heat shrinkage resistance and can cause a non-aqueous secondary battery to display excellent cycle characteristics. The composition for a non-aqueous secondary battery functional layer contains organic particles and a solvent. The organic particles include a polyfunctional ethylenically unsaturated monomer unit in a proportion of not less than 55 mass % and not more than 90 mass %, and have a volume-average particle diameter of not less than 50 nm and not more than 370 nm.

The present disclosure provides a method for forming a solid-state battery. The method includes stacking two or more cell units, where each cell unit is formed by substantially aligning a first electrode and a second electrode, where the first electrode includes one or more first electroactive material layers disposed on or adjacent to one or more surfaces of a releasable substrate and the second electrode includes one or more second electroactive material layers disposed on or adjacent to one or more surfaces of a current collector; disposing an electrolyte layer between exposed surfaces of the first electrode and the second electrode; and removing the releasable substrate to form the cell unit.

An electrolyte composition for a lithium secondary battery includes a lithium salt comprising a nitrogen element, a first additive having a LUMO (lowest occupied molecular orbital) value lower than a LUMO value of the lithium salt, and a second additive having a LUMO value higher than the LUMO value of the lithium salt.