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Research paper : Challenge for the development of micro SOFC manufacturing technology (Y. Fujishiro et al.)−54−Synthesiology - English edition Vol.4 No.1 (2011) Toshiaki YamaguchiCompleted the courses at the Graduate School of Engineering, Nagoya University in 2002. Assistant at the School of Engineering, Nagoya University until 2004. Researcher of the Functional Integrated Module Research Group, Advanced Manufacturing Research Institute, AIST from 2005. Specialties are inorganic chemistry and wet process technology for functional materials and devices such as and SOFCs. Visiting researcher at the Colorado School of Mines in 2010. For this paper, was mainly in charge of the R&D for coating technology of ceramics electrodes used in the honeycomb SOFC.Koichi HamamotoCompleted the doctoral course for Material Sciences at the Graduate School of Engineering, The University of Tokyo in 2001. Doctor (Engineering). Special researcher, Japan Society for Promotion of Science in 2001; special researcher, Synergy Materials Research Center, AIST in 2002; and researcher, Functional Integrated Module Research Group, Advanced Manufacturing Research Institute, AIST in 2008. Specialties are the functional material chemistry such as electronic ceramics and electrochemistry. For this paper, was mainly in charge of the electrode laminating technology in the ceramic integration process.Masanobu AwanoCompleted the doctorate course at the Hokkaido University in 1983. Worked at the National Industrial Research Institute of Nagoya; Synergy Materials Research Center, AIST; and Advanced Manufacturing Research Institute, AIST. Deputy director of Advanced Manufacturing Research Institute from 2009. Specialty is ceramics material science. For this paper, was mainly in charge of the R&D for highly integrated ceramic reactor manufacturing technology.Discussions with Reviewers1 Overall evaluation of the paperComment (Toshimi Shimizu, Deputy Director-General for Nanotechnology, Material, Manufacturing, AIST)This paper is a description of the ideas, the prototype fabrication, and the evaluation results for the power generation module that is compact, has high output, and is highly efficient. It was realized by utilizing the original ceramic integration and manufacturing technology. It contributes greatly to solving the energy issues that are raising social concerns today, and I feel it is appropriate as a paper for Synthesiology.However, in general, the logical construct and the expressions are like project reports or technical manuals. Therefore, while it can be understood by readers who are versed in fuel cells and related technologies, the text including the terminologies and figures is rather difficult for other readers. I think it will be a readable and fulfilling paper by improving the points indicated in the following discussions.2 Basic positioning of the R&DComment (Hiroshi Tateishi, New Energy and Industrial Technology Development Organization)The points and the flow of technological development are overall appropriately organized but the explanation of the strategy for R&D is weak as a paper of Synthesiology. I think the following three points are problems in terms of synthesis, so please consider revising them.(1) I think there is a lack of explanation on what social significance this development has. If it is a development of the ceramic reactor the content can stand as is, but since you state specifically that it is a development of SOFC, you need to provide a corresponding explanation. The technological goal of realizing characteristics never seen in conventional SOFC is clear, but it is unclear what you wish to accomplish with the results to be obtained. You need to state that in the beginning: “There are A, B, and C that are applications that could not be handled by the conventional SOFC, and we set as our goal such-and-such performance and cost for the specs required.” In reality, the application tends to become visible later in the course of events, but in a paper you should state the objective of the development at the beginning.(2) You set as the targets for SOFC, the low temperature operation and the speeding up of startup and shutdown. However, these issues are not directly related to the output capacity and aside from the required parameters, they are issues demanded in large-capacity devices as well. This means they are not issues limited to the capacity set as the target in this paper. The creation of a “micro-module” is clearly effective in solving these issues, but in this paper the establishment of the relationship between the above two issues and the output capacity is not sufficiently described. Does the micro-SOFC technology target only the 10~100 W class devices, or will it be extended to large-capacity devices in the long run? You may not be able to achieve this technologically at this point, but what is the strategy you have in mind? I don’t think you will be evaluated highly by electric power users if these points remain unclear.(3) The relationship between the microtube module and the honeycomb module is not clearly stated in the paper. I think that tubular comes first then honeycomb appears in terms of chronology, but what are their characteristics, will they be used according to different uses in the future, or will you eventually settle on one structure for practical use? What are the future issues for the two structures? You need to explain these points.Answer (Yoshinobu Fujishiro)As social significance, when the highly efficient SOFC is used particularly in the homes, significant reduction in CO2 emission will become possible if it can be operated by DDS (daily start and stop) according to the power load used. To do so, the realization of SOFC that is compact, of high performance, capable of rapid startup/shutdown, and that has high performance at low temperature to allow simple heat management is necessary. Until now, there was no technology to enhance the high performance or high integration by increasing the electrode surface area per volume and to address the issues of resistance of the ceramics material. The greatest significance of the research for the realization of high-performance, compact SOFC is that the ceramics integration technology developed by AIST was utilized to achieve the high integration and high performance at low temperature that were not possible before. We see the research strategy as the development and technological diffusion (through the presentation of readily-usable module) of the functional ceramics member manufacturing technology.Specifically, we considered the following social significance and modified the text.(1) We reconsidered the relationship of the issues of output

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