Superkapacitory

Superkapacitory is a term used in speculative discussions and some fictional works to denote a class of energy storage devices envisioned to combine the rapid charge-discharge capability of a supercapacitor with the high energy density of a battery. In these contexts, a superkapacitory would be able to sustain high power output over many cycles while storing more energy per unit mass than conventional electrochemical capacitors.

Typically imagined to employ a hybrid storage mechanism combining electric double-layer capacitance with fast, reversible faradaic reactions, possibly using novel electrode materials, solid-state electrolytes, or multi-layer architectures. Some proposals emphasize modular design, allowing scalable energy and power.

As of now, there is no widely adopted technical definition or commercially available device called a superkapacitory. The term appears mainly in theoretical literature and science fiction; substantial scientific challenges remain in achieving both high energy density and high cycle life.

If realized, applications could include electric vehicles, power grids, or portable electronics requiring rapid bursts of power and long-term energy storage. Research in related areas—double-layer capacitors, pseudocapacitors, and battery-supercapacitor hybrids—continues to inform the concept, but practical implementation remains speculative.

Related topics include supercapacitors, batteries, and energy storage systems.