A battery cell includes a battery cell stack including A anode electrodes including an anode active material layer arranged adjacent to an anode current collector; C cathode electrodes including a cathode active material layer arranged adjacent to a cathode current collector; and S separators arranged between the A anode electrodes and the C cathode electrodes. The anode active material layer of the A anode electrodes includes a lithium metal layer and a lithium alloy layer comprising an alloy of lithium and a lithiophilic metal.

A method for manufacturing an anode electrode for a battery cell includes providing a current collector; and forming a layer on the current collector to create a coated current collector. The layer includes one of a metal and a metal oxide that is not miscible in molten lithium. The method includes immersing the coated current collector in molten lithium to coat the coated current collector.

A secondary battery includes an laminated electrode in which positive electrode (1) and a negative electrode are arranged with a separator interposed therebetween. Positive electrode collector foil (3) is made of aluminum or an aluminum alloy. Positive electrode mixture layer (2) includes a positive electrode active material containing nickel and lithium. Protective layer (4) formed between positive electrode collector foil (3) and positive electrode mixture layer (2) includes a plurality of carbon particles (5). Carbon particles (5) are thin flakes which have principal plane (5a) and thickness (5b) orthogonal to principal plane (5a) and in which length L1 in one direction of principal plane (5a), length L2 in a direction orthogonal to the one direction within principal plane (5a), and length L3 in the direction of thickness (5b) satisfy the relationships of 5(L1/L2)1, (L1/L3)5, L2>L3, and L14 m. Within protective layer (4), principal plane (5a) intersects the thickness direction of protective layer (4). The average thickness of protective layer (4) is not less than 10 m and not more than 100 m.

The presently disclosed and/or claimed inventive concept(s) relates generally to a composition of a slurry for use in preparation of a lithium ion battery. The slurry comprises a binder composition comprising a modified guaran for use in battery electrodes and methods of preparing such. The presently disclosed and/or claimed inventive concept(s) also relates to compositions and methods of making electrodes, either anodes and/or cathodes, with the binder composition comprising the modified guaran.

An anode for a lithium-based energy storage device such as a lithium-ion battery is disclosed. The anode includes an electrically conductive current collector comprising an electrically conductive layer and a transition metal oxide layer overlaying the electrically conductive layer. The anode may include a continuous porous lithium storage layer provided over the transition metal oxide layer. The continuous porous lithium storage layer may include at least 80 atomic % silicon. A method of making the anode may include providing an electrically conductive current collector having an electrically conductive layer and a transition metal oxide layer provided over the electrically conductive layer. A continuous porous lithium storage layer is deposited over the transition metal oxide layer by PECVD. The continuous porous lithium storage layer has a total content of silicon of at least 80 atomic %.

A battery includes an outer package including a laminated film including one or more resin layers, a terminal, and a melt-bonding assisting member including a thermoplastic resin and extending along the terminal. The outer package includes a melt-bonded region at which the terminal is sandwiched between the one or more resin layers. The terminal includes an inner part, a sandwiched part, and an outer part arranged in a first direction. The melt-bonding assisting member internally and externally extends in the first direction beyond contact with the outer package.

A method for manufacturing an anode electrode includes supplying an anode current collector; coating a first portion of the anode current collector with a precursor coating; not coating a second portion of the anode current collector with the precursor coating; treating the anode current collector with plasma to at least one of decrease lithium wettability of the first portion and to increase lithium wettability of the second portion; and coating the anode current collector with lithium metal to form an anode active material layer.

A cathode electrode includes a multi-functional cathode current collector including a cathode current collector and a layer including a positive temperature coefficient (PTC) material arranged adjacent to the cathode current collector. A cathode active material layer is arranged on the multi-functional cathode current collector and includes a cathode active material including nickel.

Described herein is an all-solid-state battery comprising two or more mono cells connected in series, wherein: each mono cell comprises a lithium-based cathode, a sulfide solid electrolyte, and an anode; and adjacent mono cells are connected through a single, shared current collector in contact with a cathode and an anode of adjacent mono cells. The all-solid-state battery can be fabricated by stacking freestanding layers of the lithium-based cathode, the sulfide solid electrolyte, the anode, and the current collector in a bipolar design, and pressing the layers together to form the all-solid-state battery. The lithium-ion battery -can be incorporated into portable electronics and electric vehicles.

A high-strength steel foil for the positive and negative electrode current collectors of nickel-hydrogen secondary batteries which uses a light weight and economical steel foil and which is thin and strong and has excellent rust resistance and resistance to metal ion leaching. Also, a high-strength steel foil for the positive and negative electrode current collectors of nickel-hydrogen secondary batteries which has excellent elongation. The Ni-plated steel foil for hydrogen secondary battery current collectors comprises, by mass %, C: 0.0001 to 0.0200%, Si: 0.0001 to 0.0200%, Mn: 0.005 to 0.300%, P: 0.001 to 0.020%, S: 0.0001 to 0.0100%, Al: 0.0005 to 0.1000%, N: 0.0001 to 0.0040%, one or both of Ti and Nb: 0.800% or less respectively, and a balance of Fe and impurities. The Ni-plated steel foil has an Ni plating layer on both surfaces. The thickness of the Ni plating layer on both surfaces of the Ni-plated steel foil is greater than or equal to 0.15 m, the thickness of the Ni-plated steel foil is 5 to 50 m, the tensile strength is over 400 MPa but no greater than 1200 MPa, and the surface defect area percentage is less than or equal to 5.00% for both surfaces of the Ni-plated steel foil.