1. An integrated circuit comprising a semiconductor substrate in which active areas surround or are surrounded by hollowings filled with an insulator, wherein a conductive region is embedded in the insulator of at least one hollowing, the conductive region being connected to a reference voltage and being connected to at least one neighboring element of the circuit.
2. The integrated circuit of claim 1, wherein the conductive region is connected to a conductive supply or ground line of an interconnect network.
3. The integrated circuit of claim 1, wherein said element of the circuit is a terminal of a component or a bias contact of the substrate or of a well formed in the substrate.
4. The integrated circuit of claim 1, comprising components formed in active areas, the substrate and the components being covered with an insulating protective layer, a portion of an active area adjacent to one of said at least one hollowing being connected to the conductive region of this hollowing via a metal contact placed in a single opening of the protection insulating layer and of the insulator covering the conductive layer.
5. The circuit of claim 1, wherein the semiconductor substrate is made of single-crystal silicon, said insulator being formed of silicon oxide and nitride.
6. The integrated circuit of claim 1 forming a SRAM-type memory, in which the supply and ground voltage distribution network is formed of a network of conductive regions embedded in several hollowings of the substrate, the conductive regions being connected to several sourcedrain areas of the MOS transistors of the memory by contacts.
7-8. (canceled)
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A nonaqueous lithium battery comprising:
a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions;
a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions; and
a nonaqueous electrolytic solution containing lithium ions,
wherein a surface of the negative electrode active material, after initializing charging, is coated with a compound derived from vinylene carbonate.
2. A nonaqueous lithium battery comprising:
a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions;
a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions; and
a nonaqueous electrolytic solution containing lithium ions,
wherein a surface of the negative electrode active material, after initializing charging, is coated with a compound derived from a mixture of vinylene carbonate and an organic compound comprising one or more carboxylic anhydride groups selected from the group consisting of a chain or cyclic carbonate compound, an ester compound, an ether compound, and a compound having functional groups with other functional group substituent, the functional groups constituting the abobe-described compounds
3. The nonaqueous lithium secondary battery according to claim 2, wherein the organic compound comprising the carboxylic anhydride group has a molecular structure asymmetrical with respect to a symmetric axis 1 in Formula (1), wherein R1 and R2 in Formula (1) may couple with each other to form a ring and are organic groups whose carbon number is in a range of 1 to 20, and R1 and R2 in Formula (1) further contain at least one of hydrogen, sulfur, oxygen, nitrogen, fluorine, chlorine, bromine, and iodine.
4. The nonaqueous lithium secondary battery according to claim 1, wherein a weight power density of the lithium battery is no less than 100 Whkg.
5. A method of producing a nonaqueous lithium battery comprising a step of sealing a positive electrode active material comprising a lithium-containing oxide capable of inserting and detaching lithium ions, a negative electrode active material comprising a carbon material capable of inserting and detaching lithium ions, and a nonaqueous electrolytic solution containing lithium ions, using a sealed container to constitute a lithium battery, wherein after adding a predetermined amount of vinylene carbonate into the nonaqueous electrolytic solution and constituting the lithium battery, initializing charging is carried out to form a coating on a surface of the negative electrode active material, the coating being derived from the vinylene carbonate.
6. The method of producing a nonaqueous lithium battery according to claim 5, wherein an additive amount of the vinylene carbonate is in a range of 0.3-0.6 g100 g (electrolytic solution mass).
7. The method of producing a nonaqueous lithium battery according to claim 5, wherein the additive amount of the vinylene carbonate is in a range of 3-6 g100 g (electrolytic solution mass).
8. The method of producing a nonaqueous lithium battery according to claim 5, wherein a battery capacity of the lithium battery is not greater than 10 Ah, and wherein when an amount of the negative electrode active material is denoted as A, an amount of the negative electrode conductive material as B, a specific surface area of the negative electrode active material as X (m2g), and a specific surface area of the negative electrode conductive material as Y (m2g), the additive amount C (gm2) of vinylene carbonate is in a range calculated from an equation below.
0.0058
\u2266
C
\ue8a0
(
g
)
(
A
\xb7
X
+
B
\xb7
Y
)
\ue89e
(
m
2
)
\u2266
0.0115
Equation
\ue89e
\ue89e
(
1
)
9. The method of producing a nonaqueous lithium battery according to claim 5, wherein a weight power density of the lithium battery is no less than 100 Whkg.
10. The method of producing a nonaqueous lithium battery according to claim 5, wherein a nonaqueous electrolytic solution containing an organic compound with a carboxylic anhydride group has a molecular structure asymmetrical with respect to a symmetric axis 1 in Formula (1), wherein R1 and R2 in Formula (1) may couple with each other to form a ring and are organic groups whose carbon number is in a range of 1 to 20, and R1 and R2 in Formula (1) further contain at least one of hydrogen, sulfur, oxygen, nitrogen, fluorine, chlorine, bromine, and iodine.