ELECTROLYTIC SOLUTION, METHOD FOR PREPARING ESTER COMPOUND CONTAINED THEREIN AND LITHIUM SECONDARY CELL
申请人:NEC Corporation
公开号:US20180342769A1
公开(公告)日:2018-11-29
Provided is a lithium secondary cell which has high capacity, suppresses deterioration in capacity and improves cycle characteristics particularly when used in high-temperature environments and has long lifespan. Provided is a lithium secondary cell including a positive electrode active material layer containing a positive electrode active material, a negative electrode active material layer containing a negative electrode active material and an electrolytic solution for immersing the positive and negative electrode active material layers, wherein the electrolytic solution contains at least one certain ester compound.
Disclosed herein are methods that include providing a first particle having pores, the first particle having a first compression test value, and partially cross-linking the first particle to form a second particle having pores, the second particle having a second compression test value that is larger than the first compression test value by 25% or more, where a maximum dimension of the first particle is 5,000 microns or less, and a maximum dimension of the second particle is 5,000 microns or less.
SULFONIUM COMPOUND
申请人:MASUYAMA Tatsuro
公开号:US20100248135A1
公开(公告)日:2010-09-30
The present invention provides a sulfonium compound represented by the formula (I):
wherein Q
1
and Q
2
each independently represent a fluorine atom or a C1-C6 perfluoroalkyl group, R1 represents a C5-C42 organic group having a β-ketoester structure and A
+
represents an organic counter ion, and a chemically amplified photoresist composition comprising the above-mentioned sulfonium compound and a resin comprising a structural unit having an acid-labile group and being insoluble or poorly soluble in an aqueous alkali solution but becoming soluble in an aqueous alkali solution by the action of an acid.