▎ 摘　　要

NOVELTY - Electrochemical device comprises: an anode comprising sodium or lithium; a cathode comprising a carbonaceous material; a separator; and an electrolyte comprising a metal halide, a fluorinated electrolyte compound, and thionyl chloride, where the device is a secondary battery. USE - The device is useful for secondary battery (claimed) and primary battery. ADVANTAGE - The device: provides lithium metal batteries could be more beneficial due to higher processability and lower reactivity than sodium metal; with developed carbon materials with further improved micropore volume could further boost capacity and cycling stability of secondary batteries; and provides battery without any electrolyte additives, which shows improved performance, e.g. discharge capacity and improved battery life cycle. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) producing a microporous carbon material; and (2) microporous carbon material produced by the method, which exhibits a microporosity of at least 0.5 cm3/g, preferably at least 1 cm3/g. DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of the sodium-chlorine battery.