Xin Z Zhao

US Patent:

20160056467, Feb 25, 2016

Filed:

Oct 30, 2015

Appl. No.:

14/928559

Inventors:

- Camas WA, US
Yuhao Lu - Camas WA, US
Xin Zhao - Vancouver WA, US

International Classification:

H01M 4/58
H01M 2/16
H01M 10/0525
H01M 10/058
H01M 4/583
H01M 4/38
H01M 4/56
H01M 4/62
H01M 10/054

Abstract:

An alkali-ion battery is provided with a transition metal cyanometallate (TMCM) sheet cathode and a non-alkaline metal anode. The fabrication method mixes TMCM powders, conductive additives, and a polytetrafluoroethylene binder with a solution containing water, forming a wet paste. The wet paste is formed into a free-standing sheet of cathode active material, which is laminated to a cathode current collector, forming a cathode electrode. The free-standing sheet of cathode active material has a thickness typically in the range of 100 microns to 2 millimeters. The cathode electrode is assembled with a non-alkaline metal anode electrode and an ion-permeable membrane interposed between the cathode electrode and anode electrode, forming an assembly. The assembly is dried at a temperature of greater than 100 degrees C. The dried assembly is then inserted into a container (case) and electrolyte is added. Thick anodes made from free-standing sheets of active material can be similarly formed.

US Patent:

20150357646, Dec 10, 2015

Filed:

Aug 14, 2015

Appl. No.:

14/827001

Inventors:

- Camas WA, US
Sean Vail - Vancouver WA, US
Xin Zhao - Vancouver WA, US
Jie Song - Vancouver WA, US

International Classification:

H01M 4/62
H01M 4/38
H01M 10/0567
H01M 10/054

Abstract:

A sodium or potassium battery is provided, prior to an initial charge and discharge cycle, with a halogen salt additive. As is conventional, the battery is made up of the following components: an anode, a cathode, and an electrolyte. In addition, the battery includes a halogen salt (MX), where M is a metal and X is a halogen element. The halogen salt is added to the anode, the cathode, the electrolyte, or combinations thereof. The concentration MX with respect to the component(s) to which it is added is in the range of 0.01% to 10% in weight. The element X can be selected from the group of halogen elements listed in the Periodic Table. M is a material such as lithium, sodium, potassium, cesium, magnesium, calcium, barium, titanium, manganese, iron, cobalt, nickel, copper, zinc, ammonium, or combinations thereof. Advantageously, the electrolyte may be either aqueous or non-aqueous.