US 2019/0296325 A1 · SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SUPPLY

Abstract

According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode including titanium oxide particles, and an aqueous electrolyte. The surfaces of the titanium oxide particles are partially covered with an alkyl-based silane compound. The ratio IB/IA of the intensity IB of the second peak PB to the intensity IA of the first peak PA is within a range of 4 to 10. The first peak PA is a maximum peak present within a range of 3200 cm−1 to 3600 cm−1 in an infrared absorption spectrum of the titanium oxide particles. The second peak PB is a maximum peak present within a range of 565 cm−1 to 570 cm−1 in the infrared absorption spectrum of the titanium oxide particles.

Claims10

Dependent claims

A secondary battery comprising:

a positive electrode;
a negative electrode comprising titanium oxide particles;
and an aqueous electrolyte, wherein
surfaces of the titanium oxide particles are partially covered with an alkyl-based silane compound, and
a ratio IB/IA of an intensity IB of a second peak PB to an intensity IA of a first peak PA is within a range of 4 to 10, where
the first peak PA is a maximum peak present within a range of 3200 cm−1 to 3600 cm−1 in an infrared absorption spectrum of the titanium oxide particles obtained by infrared spectroscopy, and the second peak PB is a maximum peak present within a range of 565 cm−1 to 570 cm−1 in the infrared absorption spectrum.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/124,574Filed 7 Sep 2018

Priority

JP 2018-05629023 Mar 2018

Published

26 Sep 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H01M 4/131
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
H01M 4/386
Of elements or alloys: silicon or alloys based on silicon
H01M 4/483
Of inorganic oxides or hydroxides: for non-aqueous cells
H01M 4/485
Of inorganic oxides or hydroxides: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy

Secondary battery, battery pack, vehicle, and stationary power supply

Life of this patent

Secondary battery, battery pack, vehicle, and stationary power supply

Life of this patent

Abstract

Claims10