| 摘要 |
An electrochemical cell, such as a fuel cell, having improved sealing against leakage includes (a) a first electrochemical cell component having a mating surface; (b) a cured sealant composition adhesively bonded to the mating surface of the first electrochemical cell component and (c) a second electrochemical cell component, having a mating surface abuttingly disposed over the cured sealant composition, The cured sealant composition includes an alkenyl terminated diallyl polyisobutylene oligomer, a silyl hardener having at least one hydrogen atom bonded to a silicon atom, a hydrosilylation catalyst and, optionally, a polyfunctional alkenyl monomer.
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