Open Conference Systems, International Conference on Electrochemical Energy and Technology

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Improved coking resistance and sulfur tolerance of nickel-based anodes for solid oxide fuel cells operating on practical fuels
zong ping shao

Last modified: 2014-10-08

Abstract


With increasing energy demand and diminishing fossil fuels  resources, the development of new energy materials and  technologies becomes important for a sustainable future.  Solid oxide fuel cell (SOFC) is known as an environmental-friendly and highly efficient electrochemical energy conversion  device, which is superior to the low-temperature fuel cells  because a number of carbonaceous fuels could be utilized  directly. The state-of-the-art anodes for SOFCs are the Ni-based cermets, which suffered from serious coke formation  and sulfur poisoning when operated on carbon-containing  fuels. These drawbacks have hindered the widespread  application of this attractive technology. In this report, we will  summerize our past efforts on the modification of convetional  nickel-based anodes for operating on practical hydrocarbons  or oxygenated hydcrocarbon fuels with improved power output,  coking resistance and sulphur tolerances. The innovative  methods include applying a funtional layer over the anode  surface, adding basic gas as fuel additive, selecting oxyegn-storing proton-conducting oxide as anode secondary  phase, and developing lithium-conductive electrolyte as  anode decorator. 

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