Abstract: A bipolar plate for an electrochemical cell is disclosed. The bipolar plate includes a unitary plate having first and second inlet ports, first and second outlet ports. The bipolar plate further includes a plurality of protrusions on each surface that forms a first plurality of flow channels, and second plurality flow channels. A first frame inlet header channel at one end of the first flow channels is in fluid communication with the first inlet port, and a first outlet header channel at the other end of the first flow channels is in fluid communication with the first outlet port. A second frame inlet header channel at one end of the second flow channels is in fluid communication with the second inlet port, and an outlet header channel at the other end of the second flow channels is in fluid communication with the second outlet port. Each of the header channels provides a fluid flow channel from one end of the respective header channel to the other end.

Abstract: Disclosed herein are mobile hydrogen gas dispensing apparatus, and methods for dispensing hydrogen gas. In one embodiment, the mobile hydrogen gas dispensing apparatus comprises a first outlet and a second outlet. The first outlet comprises a first valve, a first hydrogen gas output port, a first nozzle, a first display panel in operable communication with the first hydrogen gas output port, and a first hose forming fluid communication between the first hydrogen output port and the first nozzle. The apparatus further comprises: an electrochemical cell disposed in fluid communication with the first outlet, and a mobile platform, wherein the first outlet and the electrochemical cell are mechanically connected to the mobile platform.

Abstract: Disclosed herein are an electrochemical system, a hydrogen gas fueling system, a cascade system, and methods for using the same. The hydrogen gas fueling system comprises a multiple-stage compressor disposed in fluid communication with a hydrogen gas source, the compressor configured to cool hydrogen gas received at a stage of the compressor, a cascade section comprising at least two hydrogen gas storage zones disposed in fluid communication with the compressor at the outlet of the compressor, and a hydrogen gas dispensing section disposed in fluid communication with the cascade section.

Abstract: Disclosed herein are an electrochemical system, a hydrogen gas fueling system, a cascade system, and methods for using the same. The hydrogen gas fueling system comprises a multiple-stage compressor disposed in fluid communication with a hydrogen gas source, the compressor configured to cool hydrogen gas received at a stage of the compressor, a cascade section comprising at least two hydrogen gas storage zones disposed in fluid communication with the compressor at the outlet of the compressor, and a hydrogen gas dispensing section disposed in fluid communication with the cascade section.

Abstract: A ventilation system for an electrochemical cell includes a control unit, a sensor disposed in informational communication with the control unit, and a fan disposed in operable communication with the control unit. The sensor is configured to sense a condition within the ventilation system, and the fan is operable in response to information received at the sensor.

Abstract: Disclosed herein are mobile hydrogen gas dispensing apparatus, and methods for dispensing hydrogen gas. In one embodiment, the mobile hydrogen gas dispensing apparatus comprises a first outlet and a second outlet. The first outlet comprises a first valve, a first hydrogen gas output port, a first nozzle, a first display panel in operable communication with the first hydrogen gas output port, and a first hose forming fluid communication between the first hydrogen output port and the first nozzle. The apparatus further comprises: an electrochemical cell disposed in fluid communication with the first outlet, and a mobile platform, wherein the first outlet and the electrochemical cell are mechanically connected to the mobile platform.