Each cell of a battery stores electrical energy as chemical energy in two electrodes, a reductant (anode) and an oxidant (cathode), separated by an electrolyte that transfers the ionic component of the chemical reaction inside the cell and forces the electronic component outside the battery. The output on discharge is an external electronic current I at a voltage V for a time Δt. The chemical reaction of a rechargeable battery must be reversible on the application of a charging I and V. Critical parameters of a rechargeable battery are safety, density of energy that can be stored at a specific power input and retrieved at a specific power output, cycle and shelf life, storage efficiency, and cost of fabrication. Conventional ambient-temperature rechargeable batteries have solid electrodes and a liquid electrolyte. The positive electrode (cathode) consists of a host framework into which the mobile (working) cation is inserted reversibly over a finite solid–solution range. The solid–solution range, which is...

The Li-ion rechargeable battery: a perspective.

Electrolytes and interphases in Li-ion batteries and beyond.

Energy-storage technologies, including electrical double-layer capacitors and rechargeable batteries, have attracted significant attention for applications in portable electronic devices, electric vehicles, bulk electricity storage at power stations, and “load leveling” of renewable sources, such as solar energy and wind power. Transforming lithium batteries and electric double-layer capacitors requires a step change in the science underpinning these devices, including the discovery of new materials, new electrochemistry, and an increased understanding of the processes on which the devices depend. The Review will consider some of the current scientific issues underpinning lithium batteries and electric double-layer capacitors.

Challenges Facing Lithium Batteries and Electrical Double‐Layer Capacitors

A review of the electrochemical performance of alloy anodes for lithium-ion batteries

Alloy negative electrodes for Li-ion batteries.

Effect of fluoroethylene carbonate additive on interfacial properties of silicon thin-film electrode

Phase transitions explanatory of the electrochemical degradation mechanism of Si based materials

The negative electrode for a rechargeable lithium battery includes a current collector and a negative active material layer disposed on the current collector. The negative active material layer includes a metal-based negative active material and sheet-shaped graphite and has porosity of 20 to 80 volume %. The negative electrode for a rechargeable lithium battery can improve cell characteristics by inhibiting volume change and stress due to active material particle bombardment during charge and discharge, and by decreasing electrode resistance.

Negative Electrode for Rechargeable Lithium Battery and Rechargeable Lithium Battery Including Same

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode for a rechargeable lithium battery includes a current collector, and a negative active material layer on the current collector. The negative active material layer includes an interpenetrating network network, and a negative active material in the interpenetrating network network. The interpenetrating network is formed by cross-linking a first polymer having a hydroxyl or amine group and a second polymer having a carboxylic acid group. The negative electrode for a rechargeable lithium battery minimizes volume expansion and imparts good cycle-life characteristics and initial formation efficiency.

Negative electrode for rechargeable lithium battery and rechargeable lithium battery including the same

PROBLEM TO BE SOLVED: To provide an negative electrode for a lithium secondary battery and a lithium secondary battery containing the same, with volume expansion minimized, excellent in life characteristics and early formation efficiency improved. SOLUTION: In the negative electrode for a lithium secondary battery and the lithium secondary battery containing the same, the negative electrode for the lithium secondary battery includes a collector and an negative electrode active material layer formed on the collector, the negative electrode active material layer includes an interpenetrative bridge network and an negative electrode active material existing in the interpenetrative bridge network, and the interpenetrative bridge network is formed of cross-linking bond with a first polymer having a hydroxy group or an amine group, and a second polymer having a carboxylic acid group. COPYRIGHT: (C)2009,JPO&INPIT

Min-Seok Sung

Papers

Effect of fluoroethylene carbonate additive on interfacial properties of silicon thin-film electrode

Phase transitions explanatory of the electrochemical degradation mechanism of Si based materials

Negative Electrode for Rechargeable Lithium Battery and Rechargeable Lithium Battery Including Same

Negative electrode for rechargeable lithium battery and rechargeable lithium battery including the same

Negative electrode for lithium secondary battery, and lithium secondary battery containing this