Abstract: Electrolytes, lithium ion cells and corresponding methods are provided, for extending the cycle life of fast charging lithium ion batteries. The electrolytes are based on fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly on ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component. Proposed electrolytes extend the cycle life by factors of two or more, as indicated by several complementary measurements.

Abstract: Electrolytes, lithium ion cells and corresponding methods are provided, for extending the cycle life of fast charging lithium ion batteries. The electrolytes are based on fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly on ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component. Proposed electrolytes extend the cycle life by factors of two or more, as indicated by several complementary measurements.

Abstract: An anode material for a lithium ion device includes an active material including silicon nanoparticles and boron carbide nanoparticles. The boron carbide nanoparticles are at least one order of magnitude smaller than the silicon nanoparticles. The weight percentage of the silicon is between about 4 to 35 weight % of the total weight of the anode material and the weight percentage of the boron carbide is between about 2.5 to about 25.6% of the total weight of the anode material. The active material may include carbon at a weight percentage of between 5 to about 60 weight % of the total weight of the anode material. Additional materials, methods of making and devices are taught.

Abstract: Electrolytes, lithium ion cells and corresponding methods are provided, for extending the cycle life of fast charging lithium ion batteries. The electrolytes are based on fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly on ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component. Proposed electrolytes extend the cycle life by factors of two or more, as indicated by several complementary measurements.

Abstract: Electrolytes, lithium ion cells and corresponding methods are provided, for extending the cycle life of fast charging lithium ion batteries. The electrolytes are based on fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly on ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component. Proposed electrolytes extend the cycle life by factors of two or more, as indicated by several complementary measurements.

Abstract: An anode material for a lithium ion device includes an active material including silicon nanoparticles and boron carbide nanoparticles. The boron carbide nanoparticles are at least one order of magnitude smaller than the silicon nanoparticles. The weight percentage of the silicon is between about 4 to 35 weight % of the total weight of the anode material and the weight percentage of the boron carbide is between about 2.5 to about 25.6% of the total weight of the anode material. The active material may include carbon at a weight percentage of between 5 to about 60 weight % of the total weight of the anode material. Additional materials, methods of making and devices are taught.

Abstract: Methods for manufacturing multi-functional electrode (MFE) devices for fast-charging of energy-storage devices are provided. The method includes assembling first MFE structure for forming a suitable electrochemical half-couple, the first MFE structure having a first fast-charging component (FCC) and a first MFE assembly and a counter-electrode structure for forming a complementary electrochemical half-couple and supplying an internal voltage controller (IVC) for applying a bias potential to the first MFE structure and/or the counter-electrode structure, the bias potential is set in accordance with the first MFE structure and said counter-electrode structure. The IVC is configured to regulate an intra-electrode potential gradient between the first FCC and the first MFE assembly to control a charge rate from the first FCC to the first MFE assembly.

Abstract: Methods for manufacturing multi-functional electrode (MFE) devices for fast-charging of energy-storage devices are provided. The method includes assembling first MFE structure for forming a suitable electrochemical half-couple, the first MFE structure having a first fast-charging component (FCC) and a first MFE assembly and a counter-electrode structure for forming a complementary electrochemical half-couple and supplying an internal voltage controller (IVC) for applying a bias potential to the first MFE structure and/or the counter-electrode structure, the bias potential is set in accordance with the first MFE structure and said counter-electrode structure. The IVC is configured to regulate an intra-electrode potential gradient between the first FCC and the first MFE assembly to control a charge rate from the first FCC to the first MFE assembly.

Abstract: An anode material for a lithium ion device includes an active material including silicon and boron. The weight percentage of the silicon is between about 4 to 35 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to 20 weight % of the total weight of the anode material. The active material may include carbon at a weight percentage of between between 5 to about 60 weight % of the total weight of the anode material. Additional materials, methods of making and devices are taught.

Abstract: The present invention discloses multi-functional electrode (MFE) devices for fast-charging of energy-storage devices. MFE devices include: a multi-functional electrode (MFE) device for fast-charging of energy-storage devices, the device including: a first MFE structure for forming a suitable electrochemical half-couple, the first MFE structure having a first fast-charging component (FCC) and a first MFE assembly; a counter-electrode structure for forming a complementary electrochemical half-couple to the first MFE structure; and an internal voltage controller (IVC) for applying a bias potential to the first MFE structure and/or the counter-electrode structure, whereby the bias potential is set in accordance with the chemical nature of the first MFE structure and the counter-electrode structure. Preferably, the IVC is configured to regulate an intra-electrode potential gradient between the first FCC and the first MFE assembly, thereby controlling a charge rate from the first FCC to the first MFE assembly.

Abstract: The present invention discloses multi-functional electrode (MFE) devices for fast-charging of energy-storage devices. MFE devices include: a multi-functional electrode (MFE) device for fast-charging of energy-storage devices, the device including: a first MFE structure for forming a suitable electrochemical half-couple, the first MFE structure having a first fast-charging component (FCC) and a first MFE assembly; a counter-electrode structure for forming a complementary electrochemical half-couple to the first MFE structure; and an internal voltage controller (IVC) for applying a bias potential to the first MFE structure and/or the counter-electrode structure, whereby the bias potential is set in accordance with the chemical nature of the first MFE structure and the counter-electrode structure. Preferably, the IVC is configured to regulate an intra-electrode potential gradient between the first FCC and the first MFE assembly, thereby controlling a charge rate from the first FCC to the first MFE assembly.