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Instruments / Technical Area	Publication Details	Published	Actions
B18-Core EXAFS E01-JEM ARM 200CF	Precisely visit the performance modulation of functionalized separator in Li-S batteries via consecutive multiscale analysis Zhangxiang Hao , Jie Chen , Xuekun Lu , Liqun Kang , Chun Tan , Ruoyu Xu , Lixia Yuan , Dan J.l. Brett , Paul R. Shearing , Feng Ryan Wang , Yunhui Huang Energy Storage Materials 1 DOI: 10.1016/j.ensm.2022.04.003 Diamond Proposal Number(s): [19072, 19246] Open Access Show Abstract ▼ Abstract: Despite progress of functionalized separator in preventing the shuttle effect and promoting the sulfur utilization, the precise and non-destructive investigation of structure-function-performance associativity remains limited so far in Li-S batteries. Here, we build consecutive multiscale analysis via combining X-ray absorption fine structure (XAFS) and X-ray computational tomography (CT) techniques to precisely visit the structure-function-performance relationship. XAFS measurement offers the atomic scale changes in the chemical structure and environment. Moreover, a non-destructive technique of X-ray CT proves the functionalized separator role for microscopic scale, which is powerful chaining to bridge the chemical structures of the materials with the overall performance modulation of cells. Benefiting from this consecutive multiscale analysis, we report that the uniform doping of Sr2+ into the perovskite LaMnO3-δ material changes the Mn oxidation states and conductivity (chemical structure), leading to effective lithium polysulfide trapping and accelerated sulfur redox (separator function), and resulting in outstanding cell performance.	Apr 2022

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B18-Core EXAFS
E01-JEM ARM 200CF

Precisely visit the performance modulation of functionalized separator in Li-S batteries via consecutive multiscale analysis