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Eco-Friendly Higher Manganese Silicide Thermoelectric Materials: Progress and Future Challenges

机译：环保型高硅化锰热电材料：进展和未来挑战

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摘要

As a promising thermoelectric material, higher manganese silicides are composed of earth-abundant and eco-friendly elements, and have attracted extensive attention for future commercialization. In this review, the authors first summarize the crystal structure, band structure, synthesis method, and pristine thermoelectric performance of different higher manganese silicides. After that, the strategies for enhancing electrical performance and reducing lattice thermal conductivity of higher manganese silicides as well as their synergism are highlighted. The application potentials including the chemical and mechanical stability of higher manganese silicides and their energy conversion efficiency of the assembled thermoelectric modules are also summarized. By analyzing the current advances in higher manganese silicides, this review proposes that potential methods of further enhancing zT of higher manganese silicides, lie in enhancing electrical performance while simultaneously reducing lattice thermal conductivity via reducing effective mass, optimizing carrier concentration, and nanostructure engineering.
机译：作为一种有前途的热电材料，高锰硅化物由丰富的地球元素和生态友好的元素组成，并已引起广泛的关注，以进行未来的商业化。在这篇综述中，作者首先总结了不同高锰硅化物的晶体结构，能带结构，合成方法和原始热电性能。此后，重点介绍了增强电性能和降低高锰硅化物的晶格热导率及其协同作用的策略。还总结了包括高锰硅化物的化学和机械稳定性及其组装热电模块的能量转换效率在内的应用潜力。通过分析高锰硅化物的最新进展，该综述提出了进一步增强高锰硅化物的zT的潜在方法，在于增强电性能，同时通过降低有效质量，优化载流子浓度和纳米结构工程来降低晶格导热率。

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