Flower-like heterostructured MoP–MoS2 hierarchical nanoreactor enabling effective anchoring for LiPS and enhanced kinetics for high performance Li–S batteries

Sacrificial Template Method to Synthesize Atomically Dispersed Mn Atoms on S, N-Codoped Carbon as a Separator Modifier for Advanced Li–S Batteries

“…The Mn/SNC cell shows three pairs of almost symmetrical redox peaks at −0.003/0.005, −0.435/0.434, and −0.772/ 0.777 V, indicating an excellent reversible redox reaction between Li 2 S n (8 ≤ n ≤ 4) and Li 2 S. By contrast, the SNC and NC cells show smaller current responses and higher polarization voltages than Mn/SNC due to unsatisfactory polysulfide catalytic and electron transfer ability. 37 A similar phenomenon can also be found at low (0.2 mV s −1 ) and high scan rates (10 mV s −1 ; Figure S6a,b). In the EIS profiles (Figure 4g), the Mn/SNC symmetric cell exhibits the lowest charge transfer resistance (18.28 Ω) compared with SNC (30.33 Ω) and NC (42.32 Ω) cells, implying enhanced electron transport kinetics of Mn/SNC.…”

“…Figure f shows the CV curves of symmetric cells at a scan rate of 2 mV s –1 using different catalysts as electrode materials. The Mn/SNC cell shows three pairs of almost symmetrical redox peaks at −0.003/0.005, −0.435/0.434, and −0.772/0.777 V, indicating an excellent reversible redox reaction between Li 2 S n (8 ≤ n ≤ 4) and Li 2 S. By contrast, the SNC and NC cells show smaller current responses and higher polarization voltages than Mn/SNC due to unsatisfactory polysulfide catalytic and electron transfer ability . A similar phenomenon can also be found at low (0.2 mV s –1 ) and high scan rates (10 mV s –1 ; Figure S6a,b).…”

MOF-derived MoP nanorods decorated with a N-doped thin carbon layer as a robust lithiophilic and sulfiphilic nanoreactor for high-performance Li–S batteries

“…The high-resolution spectrum of S 2p aer cycling could be divided into ve peaks, reecting the presence of Li 2 S, elemental S 8 , thiosulfate, polythionate complexes, and sulfate. 91,92 The results showed that the MoP@NC nanorods can catalyze the conversion of soluble long-chain LiPS to insoluble thiosulfate and polythionate complexes, further anchoring LiPS from solution and allowing it to undergo conversion to Li 2 S. [93][94][95]…”

Molybdenum‐Based Catalytic Materials for Li–S Batteries: Strategies, Mechanisms, and Prospects

“…In addition, due to the unique advantages of MoP and MoS 2 , the MoP–MoS 2 heterostructure was also investigated to modify the PP separator for Li–S batteries (Figure 11c). [ 93 ] These flower‐like heterostructures, composed of stacked nanosheets, provide numerous activity sites for LiPSs, thus promoting the reaction kinetics of LiPSs.…”