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1. (WO2019049755) CARBON ELECTRODE MATERIAL FOR REDOX FLOW BATTERY, AND METHOD FOR MANUFACTURING CARBON ELECTRODE MATERIAL
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Pub. No.: WO/2019/049755 International Application No.: PCT/JP2018/032012
Publication Date: 14.03.2019 International Filing Date: 29.08.2018
IPC:
H01M 4/96 (2006.01) ,D01F 9/22 (2006.01) ,H01M 8/18 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
86
Inert electrodes with catalytic activity, e.g. for fuel cells
96
Carbon-based electrodes
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
F
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
9
Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
08
of inorganic material
12
Carbon filaments; Apparatus specially adapted for the manufacture thereof
14
by decomposition of organic filaments
20
from polyaddition, polycondensation or polymerisation products
21
from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
22
from polyacrylonitriles
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8
Fuel cells; Manufacture thereof
18
Regenerative fuel cells
Applicants:
東洋紡株式会社 TOYOBO CO., LTD. [JP/JP]; 大阪府大阪市北区堂島浜二丁目2番8号 2-8, Dojima Hama 2-chome, Kita-ku, Osaka-shi, Osaka 5308230, JP
Inventors:
円城寺 俊克 ENJOJI, Toshikatsu; JP
松村 貴弘 MATSUMURA, Takahiro; JP
岩原 良平 IWAHARA, Ryouhei; JP
小林 真申 KOBAYASHI, Masaru; JP
龍田 真佐子 TATSUTA, Masako; JP
Agent:
植木 久一 UEKI, Kyuichi; JP
植木 久彦 UEKI, Hisahiko; JP
菅河 忠志 SUGAWA, Tadashi; JP
伊藤 浩彰 ITO, Hiroaki; JP
竹岡 明美 TAKEOKA, Akemi; JP
Priority Data:
2017-17213307.09.2017JP
2017-17213407.09.2017JP
2017-17213507.09.2017JP
Title (EN) CARBON ELECTRODE MATERIAL FOR REDOX FLOW BATTERY, AND METHOD FOR MANUFACTURING CARBON ELECTRODE MATERIAL
(FR) MATÉRIAU D’ÉLECTRODE DE CARBONE POUR BATTERIE REDOX ET PROCÉDÉ DE FABRICATION ASSOCIÉ
(JA) レドックスフロー電池用炭素電極材およびその製造方法
Abstract:
(EN) Provided is a carbon electrode material for a carbon-electrode-material redox flow battery with which it is possible to reduce cell resistance during initial charge/discharge and which has exceptional battery energy efficiency. This electrode material comprises carbonaceous fibers (A) and a carbonaceous material (B) binding the carbonaceous fibers (A), and satisfies the following requirements. (1) Lc(B) is less than 10 nm, where Lc(B) is the c-axis-direction crystallite size obtained by X-ray diffraction in the carbonaceous material (B). (2) Lc(B)/Lc(A) is equal to or greater than 1.0, where Lc(A) is the c-axis-direction crystallite size obtained by X-ray diffraction in the carbonaceous fiber (A). (3) The number of bound oxygen atoms on the carbon electrode material surface is at least 1% of the total number of carbon atoms on the carbon electrode material surface.
(FR) L’invention concerne un matériau d’électrode de carbone pour batterie redox, lequel permet d’abaisser la résistance de cellule au moment de la charge/décharge initiale, et lequel est excellent en terme d’efficacité énergétique. Le matériau d’électrode selon l’invention est constitué de fibres de carbone (A), et d’une matière carbonée (B) qui permet de lier les fibres de carbone (A). En outre, ce matériau d’électrode satisfaisant les conditions suivantes. (1) Dans la matière carbonée (B), la taille des cristallites Lc (B), telle que mesurée par diffraction des rayons X en direction d'axe c, est inférieure à 10nm. (2) Dans les fibres de carbone (A), la taille des cristallites Lc (A), telle que mesurée par diffraction des rayons X en direction d’axe c est telle que Lc(B)/Lc(A) est supérieur ou égal à 1,0. (3) Le nombre d'atomes d’oxygène liés sur la surface du matériau d’électrode de carbone est supérieur au égal à 1% du nombre total d'atomes de carbone sur la surface du matériau d’électrode de carbone.
(JA) 初期充放電時のセル抵抗を低下でき、電池エネルギー効率に優れた炭素電極材レドックスフロー電池用炭素電極材を提供する。本発明の電極材は、炭素質繊維(A)と、前記炭素質繊維(A)を結着する炭素質材料(B)と、からなり、下記の要件を満足する。 (1)炭素質材料(B)における、X線回折で求めたc軸方向の結晶子の大きさをLc(B)としたとき、Lc(B)は10nm未満、 (2)炭素質繊維(A)における、X線回折で求めたc軸方向の結晶子の大きさをLc(A)としたとき、Lc(B)/Lc(A)は1.0以上、 (3)炭素電極材表面の結合酸素原子数が炭素電極材表面の全炭素原子数の1%以上
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)