The present invention includes the use of anhydride compositions, including alkyl and aryl anhydrides, for use as a demulsifier in resolving emulsions of water and oil. The heat sink has a top mating surface that is solder wettable, and the submount has a bottom mating surface that is solder wettable. Defects in the layer remedy themselves during operation of the fuel cell. In addition, the microtip is surrounded by a sheath of non-conducting material, such that the free ends of the core and the sheath are level at the end of the microtip. A terminal in electrical communication with one of the cathode sheet and the anode sheet extends through the end cap from an interior portion of the electrochemical storage cell to an external portion thereof. Mechanisms are also provided to control the transmit power andor data rate of the remote terminals to achieve high performance and avoid instability.