WO2023161894 - LITHIATED CARBOXYLATED NITRILE BUTADIENE RUBBER AND USE THEREOF AS BINDER IN SULFUR CATHODES
National phase entry:
Publication Number
WO/2023/161894
Publication Date
31.08.2023
International Application No.
PCT/IB2023/051811
International Filing Date
27.02.2023
Title **
[English]
LITHIATED CARBOXYLATED NITRILE BUTADIENE RUBBER AND USE THEREOF AS BINDER IN SULFUR CATHODES
[French]
CAOUTCHOUC NITRILE BUTADIÈNE CARBOXYLÉ LITHIÉ ET SON UTILISATION COMME LIANT DANS DES CATHODES AU SOUFRE
Applicants **
AIRBOSS OF AMERICA CORP.
Inventors
LI, Yuning
MA, Zhong
VAHIDIFAR, Ali
GHANBARI, Abbas
YU, Steven
Priority Data
63/268,491
25.02.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
| * | |
| Number of Office Actions | * |
| * | |
International Searching Authority |
CIPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
|
* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2334 | |
| EPO | Filing, Examination, Granting | 15674 | |
| Japan | Filing, Examination, Granting | 2408 | |
| South Korea | Filing, Examination, Granting | 2646 | |
| USA | Filing, Examination, Granting | 5940 |
Total:
29,002
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Contact Us
Abstract[English]
Synthesis of lithiated carboxylated nitrile butadiene rubber (XNBR-Li) and its use as a functional binder for the sulfur cathode of lithium sulfur batteries (LSBs) are disclosed. Compared to carboxylated nitrile butadiene rubber (XNBR), XNBR-Li has stronger adhesion to sulfur and carbon black particles, forming a more uniformly dispersed and robust sulfur cathode structure. Furthermore, due to the presence of the -COOLi groups, XNBR-Li has shown a greatly improved ability to trap lithium polysulfides (LPS), which helps to suppress the shuttle effect of LPS in LSBs. In addition, the cyclic voltammetry and electrochemical impedance spectroscopy data indicate that the use of XNBR-Li as the binder can accelerate lithium-ion diffusion kinetics in the sulfur cathode.[French]
Sont divulguées la synthèse d’un caoutchouc nitrile butadiène carboxylé lithié (XNBR-Li) et son utilisation comme liant fonctionnel pour la cathode au soufre de batteries au lithium soufre (LSB). Par comparaison avec un caoutchouc nitrile butadiène carboxylé (XNBR), le XNBR-Li présente une adhérence plus forte aux particules de soufre et de noir de carbone, en formant une structure de cathode au soufre plus uniformément dispersée et plus robuste. En outre, en raison de la présence de groupes -COOLi, le XNBR-Li a présenté une capacité fortement améliorée de piégeage des polysulfures de lithium (LPS), ce qui facilite la suppression de l’effet de navette du LPS dans les LSB. De plus, les données de voltampérométrie cyclique et de spectroscopie d’impédance électrochimique indiquent que l’utilisation de XNBR-Li comme liant accélère la cinétique de la diffusion des ions lithium dans la cathode au soufre.