Dan Qing Liu

US Patent:

20230031332, Feb 2, 2023

Filed:

May 27, 2022

Appl. No.:

17/826997

Inventors:

- Providence RI, US
Dan LIU - Providence RI, US

International Classification:

H01M 4/136
H01M 10/054
H01M 4/36
H01M 4/58
C01B 25/37
H01M 4/62
C01B 25/45
C01B 25/38
C01B 25/445
H01M 10/0525

Abstract:

An energy storage composition can be used as a new Na-ion battery cathode material. The energy storage composition with an alluaudite phase of AT(PO4), NaT(PO4), NaFe(PO4)and NaFe(PO4), is described including the hydrothermal synthesis, crystal structure, and electrochemical properties. After ball milling and carbon coating, the compositions described herein demonstrate a reversible capacity, such as about 140.7 mAh/g. In addition these compositions exhibit good cycling performance (93% of the initial capacity is retained after 50 cycles) and excellent rate capability. These alluaudite compounds represent a new cathode material for large-scale battery applications that are earth-abundant and sustainable.

US Patent:

20210083265, Mar 18, 2021

Filed:

Apr 29, 2020

Appl. No.:

16/862286

Inventors:

- Providence RI, US
Dan LIU - Providence RI, US

International Classification:

H01M 4/136
H01M 10/054
H01M 4/36
H01M 4/58
C01B 25/37
H01M 4/62
C01B 25/45
C01B 25/38
C01B 25/445
H01M 10/0525

Abstract:

An energy storage composition can be used as a new Na-ion battery cathode material. The energy storage composition with an alluaudite phase of AT(PO4), NaT(PO4), NaFe(PO4)and NaFe(PO4), is described including the hydrothermal synthesis, crystal structure, and electrochemical properties. After ball milling and carbon coating, the compositions described herein demonstrate a reversible capacity, such as about 140.7 mAh/g. In addition these compositions exhibit good cycling performance (93% of the initial capacity is retained after 50 cycles) and excellent rate capability. These alluaudite compounds represent a new cathode material for large-scale battery applications that are earth-abundant and sustainable.

US Patent:

20180108905, Apr 19, 2018

Filed:

Apr 7, 2016

Appl. No.:

15/564711

Inventors:

- Providence RI, US
Dan LIU - Providence RI, US

International Classification:

H01M 4/136
H01M 10/0525
H01M 10/054
H01M 4/58
H01M 4/36
C01B 25/37
C01B 25/445

Abstract:

An energy storage composition can be used as a new Na-ion battery cathode material. The energy storage composition with an alluaudite phase of AT(PO4), NaT(PO4), NaFe(PO4)and NaFe(PO4), is described including the hydrothermal synthesis, crystal structure, and electrochemical properties. After ball milling and carbon coating, the compositions described herein demonstrate a reversible capacity, such as about 140.7 mAh/g. In addition these compositions exhibit good cycling performance (93% of the initial capacity is retained after 50 cycles) and excellent rate capability. These alluaudite compounds represent a new cathode material for large-scale battery applications that are earth-abundant and sustainable.

US Patent:

20160215404, Jul 28, 2016

Filed:

Oct 3, 2014

Appl. No.:

15/026304

Inventors:

- Providence RI, US
Sujat SEN - Providence RI, US
Dan LIU - Providence RI, US

International Classification:

C25B 11/03
C25B 11/04
C25B 3/04

Abstract:

This invention includes a catalytic copper electrode is selected from the group comprising copper nanofoam, copper aerogel, and copper nanoparticles. Particular note is made of the catalytic copper electrode having at least about 5 times and preferably about 10 times the electrochemically accessible surface area as determined by the Randles-Sevcik equation at 50 mV/s. particular note is made of the catalytic coper electrode being a copper nanofoam electrode.This invention further includes a method for the reduction of COby the steps of (i) providing a membrane divided electrochemical cell comprising an anode in a first cell compartment, a catalytic-copper electrode in a second cell compartment containing an aqueous electrolyte in contact with the anode and cathode; (ii) introducing COto said second cell compartment (iii) exposing said COto said catalytic-copper electrode at a step potential between about −0.8 and preferably about −1.0 and about −1.8 V versus the reference electrode; (iv) electrochemically reducing said COand solution by the catalytic-copper electrode in the second cell compartment; (v) thereby producing propylene and (vi) extracting said propylene from said second compartment.