Title:
NON-IONIZED PBI/PVP FILM, PREPARATION METHOD THEREFOR, AND FLOW CELL
Document Type and Number:
WIPO Patent Application WO/2022/073305
Kind Code:
A1
Abstract:
Disclosed are a non-ionized PBI/PVP film, a preparation method therefor, and a flow cell. The preparation method comprises the following steps: step A: preparing a PBI/PVP casting solution: adding PBI/PVPKn-x and 10-1000 ml of an organic solvent to a container provided with a stirring device, heating and stirring same at 20-60 °C until the polymer is dissolved so as to form a uniform and transparent PBI/PVP solution; cooling the polymer solution to room temperature, and removing bubbles and insolubles to obtain a PBI/PVP casting solution, where n = 16, 18, 23 or 30, and x is the mass fraction of PVPKn; and step B: forming a film: forming a film by using the PBI/PVP casting solution in step A, and heating and drying same so as to obtain the PBI/PVP film. Hydrophilic PVPKn of different mass fractions and different average molecular weights is mixed into PBI to prepare the non-ionized PBI/PVP film. PBI has excellent mechanical properties, strong vanadium barrier capability and good chemical stability. PVP has a weak base group which can be protonated, and has a strong electrical conductivity. The prepared PBI/PVPKn-x film has an excellent ionic conductivity, vanadium barrier capability and cell properties.
Inventors:
TAN QINGLONG (CN)
HAN YINFENG (CN)
LI QUN (CN)
JIA CONG (CN)
ZHUO LINHAI (CN)
WANG CHANGAN (CN)
CHENG XUELI (CN)
ZUO JIAN (CN)
WANG MINGJUAN (CN)
HAN YINFENG (CN)
LI QUN (CN)
JIA CONG (CN)
ZHUO LINHAI (CN)
WANG CHANGAN (CN)
CHENG XUELI (CN)
ZUO JIAN (CN)
WANG MINGJUAN (CN)
Application Number:
PCT/CN2020/140902
Publication Date:
April 14, 2022
Filing Date:
December 29, 2020
Export Citation:
Assignee:
UNIV TAISHAN (CN)
International Classes:
C08J5/22; C08L39/06; C08L79/04; H01M8/18
Domestic Patent References:
| WO2020169486A1 | 2020-08-27 |
Foreign References:
| CN107221693A | 2017-09-29 |
Other References:
SONG XIPENG, LIU JINYU; WANG LIHUA; HAN XUTONG; HUANG QINGLIN: "Preparation of Polybenzimidazole/Polyvinylpyrrolidone Proton Exchange Membranes for Vanadium Redox Flow Battery", CHEMICAL JOURNAL OF CHINESE UNIVERSITIES, vol. 40, no. 7, 1 July 2019 (2019-07-01), XP055922685, ISSN: 1543-1551, DOI: 10．7503 /cjcu20180720
ZHAO CAIXIU ～, YANG YI; LIU YITING; JIANG YING; YUAN FANG; WANG RUI; CHEN : "High Flux Polybenzimidazole Solvent Resistant Nanofiltration Membranes: Morphology Control and Performance", CHEMICAL JOURNAL OF CHINESE UNIVERSITIES, vol. 39, no. 4, 1 April 2018 (2018-04-01), pages 785 - 792, XP055922696, DOI: 10．7503 /cjcu20170618
LIU, JINYU: "Preparation and Modification of Different Acid-Doped PBI-based Proton Exchange Membranes and the Uses thereof in Vanadium Redox Flow Batteries", CHINESE MASTER’S THESES FULL-TEXT DATABASE, ENGINEERING SCIENCE AND TECHNOLOGY I, 15 November 2018 (2018-11-15), XP055922700
ZHAO CAIXIU ～, YANG YI; LIU YITING; JIANG YING; YUAN FANG; WANG RUI; CHEN : "High Flux Polybenzimidazole Solvent Resistant Nanofiltration Membranes: Morphology Control and Performance", CHEMICAL JOURNAL OF CHINESE UNIVERSITIES, vol. 39, no. 4, 1 April 2018 (2018-04-01), pages 785 - 792, XP055922696, DOI: 10．7503 /cjcu20170618
LIU, JINYU: "Preparation and Modification of Different Acid-Doped PBI-based Proton Exchange Membranes and the Uses thereof in Vanadium Redox Flow Batteries", CHINESE MASTER’S THESES FULL-TEXT DATABASE, ENGINEERING SCIENCE AND TECHNOLOGY I, 15 November 2018 (2018-11-15), XP055922700
Attorney, Agent or Firm:
JI'NAN ZHILAI INTELLECTUAL PROPERTY AGENCY(GENERAL PARTNER) (CN)
Download PDF:
Previous Patent: AP NETWORK CONFIGURATION PROCESSING METHOD AND APPARATUS
Next Patent: ULTRASONIC MEASUREMENT METHOD AND SYSTEM FOR DIAPHRAGM
Next Patent: ULTRASONIC MEASUREMENT METHOD AND SYSTEM FOR DIAPHRAGM