Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

Cathode is the electrode from which a conventional current leaves a polarized electrical device. You can easily remember this definition by using the mnemonic CCD for Cathode Current Departs. A conventional current describes the direction in which positive charges move. Electrons have a negative electrical charge, so the movement of electrons is opposite to that of the conventional current flow. Consequently, the mnemonic cathode current departs also means that electrons flow into the device's cathode from the external circuit.

CHAdeMO is a DC charging standard for electric vehicles. It enables seamless communication between the car and the charger and is an abbreviation of “CHArge de MOve,” equivalent to “charge for moving,” and is a pun for “O cha demo ikaga desuka.” in Japanese, meaning “Let's have a cup of tea while charging.”

A charging station, also called electric vehicle charging station, electric recharging point, charging point, charge point, electronic charging station (ECS), and electric vehicle supply equipment (EVSE), is a machine that supplies electric energy to charge plug-in electric vehicles.

Cobalt is the chemical element of atomic number 27, a hard silvery-white magnetic metal. Some Cobalt is produced specifically from one of a number of metallic-lustered ores, such as cobaltite (CoAsS). The element is, however, more normally produced as a by-product of copper and nickel mining. The Copperbelt in the Democratic Republic of the Congo (DRC) and Zambia yields most of the global cobalt production. Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys.

Commercial energy storage (CES) or battery storage systems are battery units that are installed to offer businesses a way to store and discharge electricity at specific times, operate independently from the grid and offer backup power when needed.

Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity.  Copper is a major component in EVs used in electric motors, batteries, inverters, wiring and in charging stations. 

Critical minerals are metals and non-metals that are considered vital for the economic well-being of the world's major and emerging economies, yet whose supply may be at risk due to geological scarcity, geopolitical issues, trade policy or other factors. Among these important minerals are metals and semi-metals used in the manufacture of mobile phones, flat screen monitors, wind turbines, electric cars, solar panels, and many other high-tech applications.

DC (Direct Current) is the one directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC).

A low-carbon economy (LCE), low-fossil-fuel economy (LFFE), or decarbonised economy is an economy based on low-carbon power sources that therefore has a minimal output of greenhouse gas (GHG) emissions into the atmosphere, specifically carbon dioxide. GHG emissions due to human activities are the dominant cause of observed climate change since the mid-20th century. Continued emission of greenhouse gases may cause long-lasting changes around the world, increasing the likelihood of severe, pervasive, and irreversible effects for people and ecosystems. 

Definitive Feasibility Study (DFS) is undertaken to a high degree of accuracy to be used as a basis for raising finance for the construction of a project. The study usually has to be approved by the Board of Directors and is based on indicated and measured mineral resources.

Direct Lithium Extraction (DLE) technology uses physical or chemical selective processes to remove lithium from brines while leaving other components in the brine. This is one of the most environmentally-responsible methods of extracting lithium from solution and avoids the need for evaporation ponds. 

Driling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips (swarf) from the hole as it is drilled. 

An example of drilling is at Bolivia's Salar de Uyuni salt flat which holds an estimated 17% of lithium globally.  Workers drill though the crust with large rigs and are aiming for the brine underneath swathes of magnesium and potassium in the hope of finding lithium-rich spots. Since the 2000s, most of the world’s lithium has been extracted this way, rather than using mineral ore sources such as spodumene, petalite and lepidolite

An electric bicycle, also known as an e-bike or ebike, is a bicycle with an integrated electric motor used to assist propulsion. Many kinds of e-bikes are available worldwide, but they generally fall into two broad categories: bikes that assist the rider's pedal-power (i.e. pedelecs) and bikes that add a throttle, integrating moped-style functionality. Both retain the ability to be pedaled by the rider and are therefore not electric motorcycles.

An electrolyser is a system that uses electricity to break water into hydrogen and oxygen in a process called electrolysis. Through electrolysis, the electrolyser system creates hydrogen gas.