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Comment on the “Discovery of high-performance thermoelectric copper chalcogenide using modified diffusion-couple high-throughput synthesis and automated histogram analysis technique” by T. Deng, T. Xing, M. K. Brod, Y. Sheng, P. Qiu, I. Veremchuk, Q. Song, T.-R. Wei, J. Yang, G. J. Snyder, Y. Grin, L. Chen and X. Shi, Energy Environ. Sci., 2020, 13, 3041
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2022-12-01 , DOI: 10.1039/d2ee01588a P. Lemoine 1, 2 , B. Raveau 3 , P. Boullay 3 , E. Guilmeau 3
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2022-12-01 , DOI: 10.1039/d2ee01588a P. Lemoine 1, 2 , B. Raveau 3 , P. Boullay 3 , E. Guilmeau 3
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The recent paper by Deng et al. showed that a copper sulphide with Cu7Sn3S10 composition is a promising thermoelectric material reaching a figure of merit ZT of 0.8 at 750 K via Cl doping. However, structural reinvestigations of the Cu7Sn3S10 sample (i.e., Cu2.10Sn0.90S3) prepared in the reported conditions show that the phase of interest is not tetragonal (space group I![[4 with combining macron]](https://www.rsc.org/images/entities/char_0034_0304.gif)
2m, at = 5.4164 Å, ct = 10.832 Å), but crystallizes in the cubic symmetry (space group P3n, ac = 10.832 Å) with a composition close to Cu22Sn10S32 similar to the results published by Pavan Kumar et al. These observations indicate that the main phase around the composition Cu7Sn3S10 is cubic, and a revision needs to be imposed for the understanding of the relationships between the structure and thermoelectric properties in this family.
中文翻译：
评论 T. Deng、T. Xing、MK Brod、Y. Sheng、P. Qiu、I. Veremchuk 的“使用改进的扩散耦合高通量合成和自动直方图分析技术发现高性能热电铜硫族化物” , Q. Song, T.-R. Wei、J. Yang、GJ Snyder、Y. Grin、L. Chen 和 X. Shi，Energy Environ。科学, 2020, 13, 3041
邓等人最近发表的论文。表明具有 Cu 7 Sn 3 S 10成分的硫化铜是一种很有前途的热电材料，通过Cl 掺杂在 750 K 时达到 0.8的品质因数ZT 。然而，在报告条件下制备的 Cu 7 Sn 3 S 10样品（即Cu 2.10 Sn 0.90 S 3 ）的结构重新研究表明，感兴趣的相不是四方相（空间群I 2 m，t = 5.4164 Å，Ct = 10.832 Å)，但结晶呈立方对称（空间群P 3 n， ac =10.832 Å），其组成接近 Cu 22 Sn 10 S 32，类似于 Pavan Kumar等人发表的结果。这些观察结果表明，围绕成分 Cu 7 Sn 3 S 10的主要相是立方体，需要进行修正以了解该族中结构和热电性质之间的关系。
更新日期：2022-12-01
2m, at = 5.4164 Å, ct = 10.832 Å), but crystallizes in the cubic symmetry (space group P3n, ac = 10.832 Å) with a composition close to Cu22Sn10S32 similar to the results published by Pavan Kumar et al. These observations indicate that the main phase around the composition Cu7Sn3S10 is cubic, and a revision needs to be imposed for the understanding of the relationships between the structure and thermoelectric properties in this family.
中文翻译：
评论 T. Deng、T. Xing、MK Brod、Y. Sheng、P. Qiu、I. Veremchuk 的“使用改进的扩散耦合高通量合成和自动直方图分析技术发现高性能热电铜硫族化物” , Q. Song, T.-R. Wei、J. Yang、GJ Snyder、Y. Grin、L. Chen 和 X. Shi，Energy Environ。科学, 2020, 13, 3041
邓等人最近发表的论文。表明具有 Cu 7 Sn 3 S 10成分的硫化铜是一种很有前途的热电材料，通过Cl 掺杂在 750 K 时达到 0.8的品质因数ZT 。然而，在报告条件下制备的 Cu 7 Sn 3 S 10样品（即Cu 2.10 Sn 0.90 S 3 ）的结构重新研究表明，感兴趣的相不是四方相（空间群I 2 m，t = 5.4164 Å，C
t = 10.832 Å)，但结晶呈立方对称（空间群P 3 n， ac =10.832 Å），其组成接近 Cu 22 Sn 10 S 32，类似于 Pavan Kumar等人发表的结果。这些观察结果表明，围绕成分 Cu 7 Sn 3 S 10的主要相是立方体，需要进行修正以了解该族中结构和热电性质之间的关系。
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