WSe2 Flakelets on N-Doped Graphene for Accelerating Polysulfide Redox and Regulating Li Plating
Dr. Peng Wang
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorFanghan Sun
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Shenglin Xiong
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorZhengchunyu Zhang
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorProf. Bin Duan
School of Control Science and Engineering, Shandong University, Jinan, 250061 P. R. China
Search for more papers by this authorProf. Chenghui Zhang
School of Control Science and Engineering, Shandong University, Jinan, 250061 P. R. China
Search for more papers by this authorProf. Jinkui Feng
Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Baojuan Xi
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorDr. Peng Wang
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorFanghan Sun
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Shenglin Xiong
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorZhengchunyu Zhang
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorProf. Bin Duan
School of Control Science and Engineering, Shandong University, Jinan, 250061 P. R. China
Search for more papers by this authorProf. Chenghui Zhang
School of Control Science and Engineering, Shandong University, Jinan, 250061 P. R. China
Search for more papers by this authorProf. Jinkui Feng
Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan, 250061 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Baojuan Xi
School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Ji Nan Shi, Jinan, 250100 P. R. China
Search for more papers by this authorAbstract
The practical application of lithium–sulfur batteries is still limited by the lithium polysulfides (LiPSs) shuttling effect on the S cathode and uncontrollable Li-dendrite growth on the Li anode. Herein, elaborately designed WSe2 flakelets immobilized on N-doped graphene (WSe2/NG) with abundant active sites are employed to be a dual-functional host for satisfying both the S cathode and Li anode synchronously. On the S cathode, the WSe2/NG with a strong interaction towards LiPSs can act as a redox accelerator to promote the bidirectional conversion of LiPSs. On the Li anode, the WSe2/NG with excellent lithiophilic features can regulate the uniform Li plating/stripping to mitigate the growth of Li dendrite. Taking advantage of these merits, the assembled Li−S full batteries exhibit remarkable rate performance and stable cycling stability even at a higher sulfur loading of 10.5 mg cm−2 with a negative to positive electrode capacity (N/P) ratio of 1.4 : 1.
Conflict of interest
The authors declare no conflict of interest.
Open Research
Data Availability Statement
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