Method for preparing an electrode for a battery operating on the principle of ion insertion and removal and/or on the principle of alloy formation, said electrode comprising an active electrode material comprising the following steps: a) a step of preparing a powder mixture comprising at least one powder of an electron-conducting additive and at least one powder of a salt, one of the ions whereof is that which is involved in the ion insertion or removal process and/or alloy formation process, said salt being selected from: - azides of the formula N 3 A, where A corresponds to a lithium, sodium or potassium cation; diazides of the formula (N 3) 2 A 1 where A 1 corresponds to a magnesium or calcium cation; triazides of the formula (N 3) 3 A 2 where A 2 corresponds to an aluminium cation; - oxocarbon salts satisfying one of the following formulae to: the aforementioned formulae showing that two negative charges are carried by two oxygen atoms of the cycle to which they are bonded, the other oxygen atoms being bonded by a double bond to the cycle, A corresponding to a lithium, sodium, potassium, calcium, magnesium or aluminium cation and x corresponding to the number of charges of the cation; - ketocarboxylates satisfying the following formulae to: where A corresponds to a lithium, sodium, potassium, calcium, magnesium or aluminium cation and x corresponds to the number of charges of the cation; - lithium hydrazides satisfying the following formulae (VIII) and: where A corresponds to a lithium, sodium, potassium, calcium, magnesium or aluminium cation, x corresponds to the number of charges of the cation, and n corresponds to the number of occurrences of the unit taken between square brackets, this number of occurrences ranging from 3 to 1,000; b) a step of placing the powder mixture from step a) in contact with a suspension comprising a solvent and said active electrode material; c) a step of forming and drying the mixture obtained in b), whereby obtaining the electrode for a battery stipulated in the subject matter. a) a step of preparing a powder mixture comprising at least one powder of an electron-conducting additive and at least one powder of a salt, one of the ions whereof is that which is involved in the ion insertion or removal process and/or alloy formation process, said salt being selected from: - azides of the formula N 3 A, where A corresponds to a lithium, sodium or potassium cation; diazides of the formula (N 3) 2 A 1 where A 1 corresponds to a magnesium or calcium cation; triazides of the formula (N 3) 3 A 2 where A 2 corresponds to an aluminium cation; - oxocarbon salts satisfying one of the following formulae to: the aforementioned formulae showing that two negative charges are carried by two oxygen atoms of the cycle to which they are bonded, the other oxygen atoms being bonded by a double bond to the cycle, A corresponding to a lithium, sodium, potassium, calcium, magnesium or aluminium cation and x corresponding to the number of charges of the cation; - ketocarboxylates satisfying the following formulae to: where A corresponds to a lithium, sodium, potassium, calcium, magnesium or aluminium cation and x corresponds to the number of charges of the cation; - lithium hydrazides satisfying the following formulae (VIII) and: where A corresponds to a lithium, sodium, potassium, calcium, magnesium or aluminium cation, x corresponds to the number of charges of the cation, and n corresponds to the number of occurrences of the unit taken between square brackets, this number of occurrences ranging from 3 to 1,000; - azides of the formula N 3 A, where A corresponds to a lithium, sodium or potassium cation; diazides of the formula (N 3) 2 A 1 where A 1 corresponds to a magnesium or calcium cation; triazides of the formula (N 3) 3 A 2 where A 2 corresponds to an aluminium cation; - oxocarbon salts satisfying one of the following formulae to: the aforementioned formulae showing that two negative charges are carried by two oxygen atoms of the cycle to which they are bonded, the other oxygen atoms being bonded by a double bond to the cycle, A corresponding to a lithium, sodium, potassium, calcium, magnesium or aluminium cation and x corresponding to the number of charges of the cation; - ketocarboxylates satisfying the following formulae to: where A corresponds to a lithium, sodium, potassium, calcium, magnesium or aluminium cation and x corresponds to the number of charges of the cation; - lithium hydrazides satisfying the following formulae (VIII) and: where A corresponds to a lithium, sodium, potassium, calcium, magnesium or aluminium cation, x corresponds to the number of charges of the cation, and n corresponds to the number of occurrences of the unit taken between square brackets, this number of occurrences ranging from 3 to 1,000; b) a step of placing the powder mixture from step a) in contact with a suspension comprising a solvent and said active electrode material; c) a step of forming and drying the mixture obtained in b), whereby obtaining the electrode for a battery stipulated in the subject matter.