NOVELTY - A carbon nanotubes-like material, comprises bacterial cellulose carbonized under an anaerobic atmosphere.    USE - In lithium battery (claimed). Also useful in nanotechnology, electronics, and optics, such as transistors, semiconductors and other electronic components, solar cells, batteries, electronic displays, and optoelectronic devices.    ADVANTAGE - The bacterial cellulose films calcined under high temperature anaerobic condition are good anode material because they maintain the carbon nano-fiber structure formed by polysaccharide and have high electrical conductivity. The porous structure of the bacterial cellulose-carbon naotubes was particularly useful for use in lithium battery because it works to facilitate the LiFePO4 gel infiltration so as to improve the electrical conductivity and thermal tolerance of the lithium battery.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) producing (M1) the carbon nanotubes-like material, involving: calcining the bacterial cellulose under the anaerobic atmosphere at a temperature of 600-1200 degrees C;    (2) a cathode material for lithium batteries, comprising the carbonized bacterial cellulose and LiFePO4;    (3) an anode material for batteries, comprising the bacterial cellulose calcined in a reducing atmosphere containing 2 vo.%/vol.% H2 and 98 vol.%/vol.% Ar at 1000 degrees C;    (4) a separator membrane for a battery, comprising the bacterial cellulose;    (5) a lithium battery comprising a component comprising the bacterial cellulose;    (6) preparing (M2) a cathode material, involving: preparing a Li/Fe solution comprising Li+ and Fe3+; titrating the Li/Fe solution with citric acid; adding PO4- to titrated Li/Fe solution to form LiFePO4; adding bacterial cellulose to LiFePO4 to form a LiFePO4/bacterial cellulose mixture; and calcining the LiFePO4/bacterial cellulose mixture to form the cathode material;    (7) preparing (M3) the separator for a battery, involving: treating the bacterial cellulose film with an aldehyde; and baking treated bacterial cellulose film to remove residue aldehyde; and    (8) removing hydroxyl groups in a bacterial cellulose film, involving: soaking the bacterial cellulose film in 10% glutaraldehyde at 60 degrees C for 24 hours; and baking the bacterial cellulose film to remove residue glutaraldehyde.