摘要:
The present invention aims at providing a nonaqueous electrolyte secondary battery that exhibits limited swelling during repeated charging and discharging. Provided is a nonaqueous electrolyte solution for use in a nonaqueous electrolyte secondary battery, the nonaqueous electrolyte secondary battery including: a positive electrode capable of absorbing and releasing metal ions; a negative electrode which is capable of absorbing and releasing metal ions and includes a negative electrode active material that contains a metal compound-based material containing a metal alloyable with Li, and a graphite; and a nonaqueous electrolyte solution containing a nonaqueous solvent and an electrolyte dissolved in the nonaqueous solvent, wherein the nonaqueous electrolyte solution contains at least one compound represented by the following Formula (A) or (B) (wherein, R 1 to R 3 each independently represent an alkyl group having 1 to 10 carbon atoms which optionally has a substituent, or an aryl group having 6 to 18 carbon atoms which optionally has a substituent; X represents hydrogen, or an alkenyl or alkynyl group having 1 to 10 carbon atoms; R 4 to R 6 each represent a hydrocarbon group having 1 to 20 carbon atoms which optionally has a substituent; Y represents S, NH, or NR 7 ; and R 7 represents a hydrocarbon group having 1 to 20 carbon atoms):
摘要:
The demand for improvements in lithium non-aqueous electrolyte secondary batteries has been constantly increasing in recent years, but the durability - most prominently the cycle characteristics - have resided in a trade off relationship with properties such as the capacity, resistance, and output characteristics. A problem has thus been a poor overall property balance. In order to solve this problem, the present invention uses a non-aqueous electrolyte solution including, in addition to an electrolyte and a non-aqueous solvent, (A) at least one compound selected from the group consisting of carbonates having a carbon-carbon unsaturated bond, compounds represented by the following general formula (1), sulfoxides, sulfites, sulfones, sulfonates, sultones, and sulfates; (B) a fluorine atom-containing cyclic carbonate; and (C) a compound that has at least two isocyanate groups in the molecule.
摘要:
Provided is a non-aqueous electrolyte secondary battery which comprises a positive electrode containing a transition metal oxide capable of having occluded therein and releasing metal ions, the transition metal oxide containing at least Ni and Co and having the Ni and Co constituting 50 mol% or more of the transition metal; a negative electrode capable of having occluded therein and releasing metal ions; and a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, wherein the non-aqueous electrolytic solution contains a compound having a structure represented by the following general formula (1):
wherein R 1 to R 3 are the same or different, and each is an organic group having 1 to 20 carbon atoms and optionally having a substituent, with the proviso that at least one of R 1 to R 3 has a carbon-carbon unsaturated bond; and wherein the transition metal oxide containing at least Ni and Co and having the Ni and Co constituting 50 mol% or more of the transition metal is a compound represented by the following compositional formula (4):
Li a3 Ni b3 Co c3 M d3 O 2 ..... (4)
wherein the following numbers: 0.9≤a3≤1.1, 0.35≤b3≤0.9, 0.1≤c3≤0.5 and 0.0≤d3≤0.5 satisfy the relationships: c3
摘要:
An object of the present invention 1 is to provide a non-aqueous electrolyte secondary battery having excellent general performance balance between durability performance and properties, such as a capacity, a resistance, and output characteristics. The present invention 1 is directed to a non-aqueous electrolytic solution for use in a non-aqueous electrolyte secondary battery which comprises: a positive electrode being capable of having occluded therein and releasing metal ions; a negative electrode being capable of having occluded therein and releasing metal ions, and comprising a negative electrode active material containing metal particles capable of forming an alloy together with Li and graphite particles; and a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, wherein the non-aqueous electrolytic solution contains a compound represented by the general formula (A), and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution.
摘要:
An object of the invention is to provide a nonaqueous electrolytic solution which is capable of bringing about a nonaqueous-electrolyte secondary battery improved in initial charge capacity, input/output characteristics, and impedance characteristics, The invention relates to a nonaqueous electrolytic solution which comprises: a nonaqueous solvent; LiPF 6 ; and a fluorosulfonic acid salt represented by formula (1): M(FSO 3 ) x [wherein M is a metal atom, N(R) 4 , or P(R) 4 (where R is either an organic group having 1-12 carbon atoms or a hydrogen atom (not all of the four R's are hydrogen atoms), the R's may be the same or different, and a part or all of the four R's may form a ring in cooperation with the nitrogen atom or phosphorus atom to which the R's have been bonded); when M is a metal atom, x indicates the valence of the metal atom M and is an integer of I or larger; and when M is N(R) 4 or P(R) 4 , x is 1], wherein the ratio of the molar content of FSO 3 , in the nonaqueous electrolytic solution to the molar content of PF 6 in the nonaqueous electrolytic solution is 0.001-1.2, and to a nonaqueous-electrolyte secondary battery containing the nonaqueous electrolytic solution.
摘要:
The present invention provides an energy device having excellent properties. Also provided is a nonaqueous electrolyte solution containing a compound represented by the following Formula (1), wherein R 11 , R 12 and R 13 each independently represent an organic group having 1 to 3 carbon atoms; and R 11 and R 12 , R 11 and R 13 , or R 12 and R 13 are optionally bound with each other to form a 5-membered ring or a 6-membered ring, with a proviso that a total number of carbon atoms of R 11 , R 12 and R 13 is 7 or less.