NEGATIVE-ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY CELL, NEGATIVE ELECTRODE FOR LITHIUM SECONDARY CELL, VEHICLE-MOUNTED LITHIUM SECONDARY CELL MAKING USE THEREOF, AND METHOD FOR MANUFACTURING NEGATIVE-ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECON

摘要

Coke material with additions of phosphorous compounds and boron compounds in phosphorus or boron equivalent at a proportion of 0.1 to 6.0 parts per weight each for 100 parts per weight of carbonaceous and/or petroleum-based ("green") coke is burned to obtain a novel negative-electrode active material for lithium secondary cell with stable charge-discharge characteristics and excellent output characteristics, initial stage efficiency and capacity maintenance rate.