Sn-Te-Mn Thermoelectric Compound with Dopants for High Heat Resistance
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Solution Overview
Problem
The existing thermoelectric conversion materials, particularly those containing Sn, Te, and Mn, lack sufficient heat resistance, which limits their effectiveness in utilizing high-temperature exhaust heat sources.
Innovation Solution
A compound comprising Sn, Te, and Mn, optionally with Sb and Bi, and further incorporating elements like Mg, In, Na, Al, Si, K, Ca, Sr, Ba, Cu, Ag, Au, Sc, Ti, V, Cr, Fe, Co, Ni, Zn, Ga, Ge, As, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Cd, Cs, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Hg, Tl, S, Se, Cl, Br, and I, with specific stoichiometric ratios to enhance thermoelectric properties and heat resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compound containing Sn, Te and Mn is used as a thermoelectric conversion material, then thermoelectric conversion characteristics are achieved, but heat resistance is insufficient
Solution Approach 1:
The patent creates a composite thermoelectric material by combining Sn-Te-Mn base compound with additional elements (Sb, Bi, and other dopants). This composite approach maintains the thermoelectric conversion characteristics of the base compound while the added elements enhance heat resistance through solid solution formation and phase stabilization, directly resolving the contradiction between reliability and adaptability
Solution Approach 2:
The patent systematically varies compositional parameters (adding Sb at 0.01-0.10 atoms, Bi at 0.01-0.10 atoms, and other elements at controlled amounts) to optimize both heat resistance and thermoelectric performance. By changing the chemical composition parameters within specific ranges, the material achieves improved reliability while preserving the essential thermoelectric conversion characteristics
2Loss of energy
If exhaust heat from automobiles and factories is utilized, then energy resource consumption is reduced, but high heat resistance is required
Solution Approach 1:
The composite Sn-Te-Mn-based compound with Sb, Bi and other dopants provides the high heat resistance necessary for withstanding exhaust heat conditions. The multiple elements work synergistically to maintain structural stability at high temperatures, enabling the utilization of waste heat from automobiles and factories without compromising material reliability
Solution Approach 2:
By optimizing the compositional parameters (specific amounts of Sb, Bi, and other elements within defined ranges), the material achieves the required heat resistance for exhaust heat applications. The parameter optimization ensures the material can operate reliably in the high-temperature environment of waste heat recovery systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed compound exhibits improved thermoelectric conversion characteristics and high heat resistance, enabling more efficient conversion of thermal energy into electrical energy, particularly in high-temperature applications.
Implementation Method 1
thermoelectric conversion devices utilizing the exhaust heat of automobiles and the exhaust heat of factories that correspond to heat sources in a high temperature region
Data Source
AI summary
A compound containing Sn, Te and Mn, and further containing either one or both of Sb and Bi.