文献类型：期刊文献

英文题名：Accelerated Li+ Desolvation for Diffusion Booster Enabling Low-Temperature Sulfur Redox Kinetics via Electrocatalytic Carbon-Grazfted-CoP Porous Nanosheets

作者：Zhang, Xin[1];Li, Xiangyang;Zhang, Yongzheng[1];Li, Xiang[1,2];Guan, Qinghua[3,4];Wang, Jian[3,4,5];Zhuang, Zechao[6];Zhuang, Quan[2];Cheng, Xiaomin[1];Liu, Haitao[7];Zhang, Jing[8];Shen, Chunyin[1];Lin, Hongzhen[3,4];Wang, Yanli[1];Zhan, Liang[1];Ling, Licheng[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Green Chem Engn & Ind Catalysis, Key Lab Specially Funct Polymer Mat & Related Tech, State Key Lab Chem Engn,Minist Educ, Shanghai 200237, Peoples R China;[2]Inner Mongolia Minzu Univ, Nano Innovat Inst NII, Inner Mongolia Key Lab Carbon Nanomat, Tongliao 028000, Inner Mongolia, Peoples R China;[3]Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, I Lab, Suzhou 215123, Jiangsu, Peoples R China;[4]Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, CAS Key Lab Nanophoton Mat & Device, Suzhou 215123, Jiangsu, Peoples R China;[5]Helmholtz Inst Ulm HIU, D-89081 Ulm, Germany;[6]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;[7]Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China;[8]Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shanxi, Peoples R China

年份：2023

卷号：33

期号：36

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20232114126370);WOS:【SCI-EXPANDED(收录号:WOS:000991450300001)】；

基金：X.Z. and X.L. contributed equally to this work. This work was financially supported by the National Key R&D Program (2021YFA1201503), National Natural Science Foundation of China (nos. 22075081, 21972164, 22279161, 11874089, 11904187, and 12264038), the Fundamental Research Funds for the Central Universities (JKD01231701), Shanghai Sailing Program of China (23YF1408900), the Natural Science Foundation of Jiangsu Province (BK 20210130), and Natural Science Foundation of Inner Mongolia (no. 2022MS01013). J.W. thanks to the fellowship awarded by the Alexander von Humboldt Foundation. Y.Z. thanks to the Shanghai Super Postdoctoral Incentive Program. The authors also thank to the technical support from Nano-X, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences.

语种：英文

外文关键词：electrocatalysis modulation; Li+ diffusion booster; lithium-sulfur batteries; solvation structures; sulfur conversion kinetics

摘要：Lithium-sulfur (Li-S) batteries are famous for their high energy density and low cost, but prevented by sluggish redox kinetics of sulfur species due to depressive Li ion diffusion kinetics, especially under low-temperature environment. Herein, a combined strategy of electrocatalysis and pore sieving effect is put forward to dissociate the Li+ solvation structure to stimulate the free Li+ diffusion, further improving sulfur redox reaction kinetics. As a protocol, an electrocatalytic porous diffusion-boosted nitrogen-doped carbon-grafted-CoP nanosheet is designed via forming the N-Co-P active structure to release more free Li+ to react with sulfur species, as fully investigated by electrochemical tests, theoretical simulations and in situ/ex situ characterizations. As a result, the cells with diffusion booster achieve desirable lifespan of 800 cycles at 2 C and excellent rate capability (775 mAh g(-1) at 3 C). Impressively, in a condition of high mass loading or low-temperature environment, the cell with 5.7 mg cm(-2) stabilizes an areal capacity of 3.2 mAh cm(-2) and the charming capacity of 647 mAh g(-1) is obtained under 0 degrees C after 80 cycles, demonstrating a promising route of providing more free Li ions toward practical high-energy Li-S batteries.