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EP0101240A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Electrode for electrolyte circulation-type cell stack secondary battery

Assignee: New Energy and Industrial Technology Development Organization
•
Filing: 1983-08-01
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Granted: —
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Expires: 2003-08-01
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Abstract

Abstract An electrode (18) for an electrolyte circulation-type cell stack secondary battery includes a pair of microchannels (34, 34a) for respectively supplying an electrolyte to or from an electrode member (30) and removing it therefrom. Each of the microchannels is formed with a first hindrance portion (361, 361a) having a plurality of wall-shaped projections (41, 42, 41a, 42a) and a second hindrance portion (362, 362a) integrally with a stepped portion (43, 43a) in the electrode thickness direction and numerous small cylindrical projections (44, 44a) arranged on the stepped portions in a staggered manner with respect to the flow direction of the electrolyte, thereby making uniform. Flow of the electrolyte on the surface of the electrode member is thereby rendered uniform, suppressing the formation of dendrites, providing uniform current density and improving the cell energy efficiency.

Inventors

  • 👤 Hiromichi Itoh
  • 👤 Takashi Hirose
  • 👤 Akira Yamamoto

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 02:30
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/365; H01M10/04; H01M10/0413; H01M10/0418; H01M4/00; H01M8/00; H01M8/02; H01M8/0271; H01M8/0273; H01M50/00; H01M50/70; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 148 words
An electrode for an electrolyte circulation-type secondary cell stack battery which comprises: a frame member; an electrode member enclosed by said frame member; a microchannel formed in each of electrolyte inlet and outlet sections of said electrode member; a pair of manifolds formed in said frame member; and a pair of channels each thereof being formed in said frame member to communicate one of said manifolds with one of said microchannels; characterized in that said microchannel in said inlet section includes a first hindrance portion and a second hindrance portion arranged in this order in a downstream direction; said first hindrance portion includes a plurality of wall-shaped projections; and said second hindrance portion includes a stepped portion extending beyond said first hindrance portion in a thickness direction of said electrode with a plurality of projections arranged in a staggered manner over a whole surface of said stepped portion.
Claim 2
Dependent Claim 148 words
An electrode for an electrolyte circulation-type secondary cell stack battery which comprises: a frame member; an electrode member enclosed by said frame member; a microchannel formed in each of electrolyte inlet and outlet sections of said electrode member; a pair of manifolds formed in said frame member; and a pair of channels each thereof being formed in said frame member to communicate one of said manifolds with one of said microchannels; characterized in that said microchannel in said inlet section includes a first hindrance portion and a second hindrance portion arranged in this order in a downstream direction; said first hindrance portion includes a plurality of wall-shaped projections; and said second hindrance portion includes a stepped portion extending beyond said first hindrance portion in a thickness direction of said electrode with a plurality of projections arranged in a staggered manner over a whole surface of said stepped portion.
Claim 3
Dependent Claim 93 words
An electrode according to Claim 1, characterized in that said microchannel in said outlet section includes another first hindrance portion and another second hindrance portion arranged in an upstream direction from the side of said outlet-section frame member channel, said first hindrance portion includes a plurality of wall-shaped projections; and said another second hindrance portion includes another stepped portion extending beyond said another first hindrance portion in the thickness direction of said electrode and has a plurality of projections arranged in a staggered manner over a whole surface of said another stepped portion.
Claim 4
Dependent Claim 21 words
An electrode according to Claim 1 or 2 characterized in that said projections have a same height with said frame member.
Claim 5
Dependent Claim 49 words
An electrode according to any preceding Claim, characterized in that said first hindrance portion include a plurality of first wall-shaped projecting portions arranged in a staggered manner and a plurality of second wall-shaped projecting portions arranged uniformly at predetermined intervals with respect to the flow direction of said electrolyte.

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