New oxathiazin-like compounds and their derivatives are useful as antineoplastic and antimicrobial agents. Compositions and methods of using oxathiazin-like compounds and their derivatives are disclosed.

The present application provides a secondary battery, and providing a battery module, a battery pack, and a powder device comprising the same. The secondary battery includes a positive electrode plate and a non-aqueous electrolytic solution, in which the positive electrode plate includes a positive electrode active material having a core-shell structure, the positive electrode active material includes an core and a shell covering the core, the core includes Li.sub.1+xMn.sub.1yA.sub.yP.sub.1zR.sub.zO.sub.4, the shell includes a first coating layer covering the core and a second coating layer covering the first coating layer, the non-aqueous electrolytic solution includes a first additive one or more selected from the compounds shown in formulae 1-A to 1-D. The secondary battery of the present application can have a relatively high energy density, and also a good rate performance, cycling performance, storage performance and safety performance.

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The present application provides a secondary battery, and providing a battery module, a battery pack, and a powder device comprising the same. The secondary battery includes a positive electrode plate and a non-aqueous electrolytic solution, in which the positive electrode plate includes a positive electrode active material having a core-shell structure, the positive electrode active material includes an core and a shell covering the core, the core includes Li.sub.1+xMn.sub.1yA.sub.yP.sub.1zR.sub.zO.sub.4, the shell includes a first coating layer covering the core and a second coating layer covering the first coating layer, the non-aqueous electrolytic solution includes a first additive one or more selected from the compounds shown in formulae 1-A to 1-D. The secondary battery of the present application can have a relatively high energy density, and also a good rate performance, cycling performance, storage performance and safety performance.

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Disclosed is a method for synthesizing 1,3,2-dioxathiolane 2,2-dioxide (DTD) by in-situ catalytic oxidation. A titanium silicon (TS)-1 molecular sieve is modified with a Pd salt and an Au salt to obtain an AuPd/TS-1 molecular sieve, which catalyzes oxygen and hydrogen to form hydrogen peroxide, and oxidizes glycol sulfite in situ in a reactor to synthesize DTD. An AuPd/TS-1 molecular sieve catalyst prepared by the present disclosure, which has two catalytic activities of catalytic synthesis of hydrogen peroxide and catalytic oxidation of sulfite, can significantly increase the reaction rate, enable the complete conversion of raw materials in a shorter residence time, and effectively inhibit the hydrolysis of products, and a high-purity DTD product can be obtained by washing and evaporatively crystallizing an organic phase.

Disclosed is a method for synthesizing 1,3,2-dioxathiolane 2,2-dioxide (DTD) by in-situ catalytic oxidation. A titanium silicon (TS)-1 molecular sieve is modified with a Pd salt and an Au salt to obtain an AuPd/TS-1 molecular sieve, which catalyzes oxygen and hydrogen to form hydrogen peroxide, and oxidizes glycol sulfite in situ in a reactor to synthesize DTD. An AuPd/TS-1 molecular sieve catalyst prepared by the present disclosure, which has two catalytic activities of catalytic synthesis of hydrogen peroxide and catalytic oxidation of sulfite, can significantly increase the reaction rate, enable the complete conversion of raw materials in a shorter residence time, and effectively inhibit the hydrolysis of products, and a high-purity DTD product can be obtained by washing and evaporatively crystallizing an organic phase.

New oxathiazin-like compounds and their derivatives are useful as antineoplastic and antimicrobial agents. Compositions and methods of using oxathiazin-like compounds and their derivatives are disclosed.

New oxathiazin-like compounds and their derivatives are useful as antineoplastic and antimicrobial agents. Compositions and methods of using oxathiazin-like compounds and their derivatives are disclosed.

The present invention relates to a thin film shielding agent, a thin film-forming composition including the thin film shielding agent, a method of forming a thin film using the thin film shielding agent, a semiconductor substrate including the thin film, and a semiconductor device including the semiconductor substrate. According to the present invention, by applying the thin film shielding agent, the reaction speed may be improved, and the thin film growth rate may be appropriately reduced. Accordingly, even when a thin film is formed on a substrate having a complex structure under high-temperature conditions, step coverage and the thickness uniformity of the thin film may be greatly improved, and a seamless thin film may be formed. In addition, by reducing impurities, film quality may be improved.

The present invention relates to a thin film shielding agent, a thin film-forming composition including the thin film shielding agent, a method of forming a thin film using the thin film shielding agent, a semiconductor substrate including the thin film, and a semiconductor device including the semiconductor substrate. According to the present invention, by applying the thin film shielding agent, the reaction speed may be improved, and the thin film growth rate may be appropriately reduced. Accordingly, even when a thin film is formed on a substrate having a complex structure under high-temperature conditions, step coverage and the thickness uniformity of the thin film may be greatly improved, and a seamless thin film may be formed. In addition, by reducing impurities, film quality may be improved.

The present invention is aimed at providing: a non-aqueous electrolyte solution for a sodium ion secondary battery, with which a sodium ion secondary battery having a low resistance and showing a limited amount of gas generation after a durability test can be provided; and a sodium ion secondary battery obtained by using the same. The non-aqueous electrolyte solution for a sodium ion secondary battery comprises: a non-aqueous solvent; NaPF.sub.6; and a compound represented by the following Formula (1) (wherein, R.sub.1 and R.sub.2 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, and n represents 0 or 1), and a ratio of the content of the compound represented by Formula (1) with respect to the content of NaPF.sub.6, [compound represented by Formula (1)]/[NaPF.sub.6] (molar ratio), is 0.001 to 1.5: ##STR00001##