香港理工大学meng ni教授系列学术讲座-亚博im电竞

 香港理工大学meng ni教授系列学术讲座-亚博im电竞
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香港理工大学meng ni教授系列学术讲座


 

一、讲座题目:

1.solid oxide fuel cell electrode microstructure reconstruction and analysis

2.solid oxide fuel cell single cell and stack scale configuration and design by numerical modeling

3.testing of solid oxide fuel cells with different alternative fuels

4.hybrid zn-air/metal batteries for high energy efficiency and high energy capacity

二、讲座时间:2019年11月14日14:00 和2019年11月15日08:30

三、讲座地点:轮机楼317会议室

四、主讲人:prof. meng ni, hong kong polytechnic university

五、讲座摘要:

1.

solid oxide fuel cells (sofcs) are promising electrochemical energy converters. they are fuel flexible and suitable for combined heat and power cogeneration. the microstructure of solid oxide fuel cells are reconstructed numerically by dropping spherical particles into computational domain. kinetic monte carlo (kmc) simulations are performed to investigate the microstructure evolution in the sintering stage for sofc fabrication. the important parameters, such as the triple-phase boundary (tpb) length, the tortuosity factor and the porosity are computed at different sintering temperature and sintering times. an optimal sintering time is found which can yield the highest tpb length.

subsequently, the reconstruction techniques have been extended to reconstruct the nano-structured sofc electrodes by a 3-step method: (1) the backbone is generated by random packing of spherical particles within a domain which is discretized into pixels with a 5-nm resolution; (2) the nanosized particles are coated on the backbone surface randomly one-by-one; and (3) the infiltrated particles are enlarged to a designed size to