Li intercalation in an MoSe_(2) electrocatalyst:In situ observation and modulation of its precisely controllable phase engineering for a high-performance flexible Li-S battery
作者机构：State Center for International Cooperation on Designer Low-carbon&Environmental Materials(CDLCEM)Zhengzhou UniversityZhengzhouChina Zhengzhou Materials Genome Institute(ZMGI)XingyangZhengzhouChina School of Chemical Engineering and Advanced MaterialsThe University of AdelaideAdelaideSouth AustraliaAustralia State Key Laboratory of Silicate Materials for ArchitectureWuhan University of TechnologyWuhanChina Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijingChina
出 版 物：《Carbon Energy》 (碳能源（英文）)
年 卷 期：2023年第5卷第2期
页 面：201-215页
核心收录：
学科分类：0808[工学-电气工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：National Natural Science Foundation of China,Grant/Award Numbers:U2004172,51972287 and 51502269 the Foundation for University Key Teachers of Henan Province,Grant/Award Number:2020GGJS009 Natural Science Foundation of Henan Province,Grant/Award Number:202300410368
主 题：electrocatalysts electrospinning Li intercalation lithium-sulfur batteries phase engineering
摘 要：Sophisticated efficient electrocatalysts are essential to rectifying the shuttle effect and realizing the high performance of flexible lithium-sulfur batteries(LSBs).Phase transformation of MoSe_(2) from the 2H phase to the 1T phase has been proven to be a significant method to improve the catalytic ***,precisely controllable phase engineering of MoSe_(2) has rarely been ***,by in situ Li ions intercalation in MoSe_(2),a precisely controllable phase evolution from 2H-MoSe_(2) to 1T-MoSe_(2) was *** importantly,the definite functional relationship between cut-off voltage and phase structure was first identified for phase engineering through in situ observation and modulation *** sulfur host(CNFs/1T-MoSe_(2))presents high charge density,strong polysulfides adsorption,and catalytic ***,Li-S cells based on it display capacity retention of 875.3mAh g^(-1) after 500 cycles at 1 C and an areal capacity of 8.71mAh cm^(-2) even at a high sulfur loading of 8.47mg cm^(-2).Furthermore,the flexible pouch cell exhibiting decent performance will endow a promising potential in the wearable energy storage *** study proposes an effective strategy to precisely control the phase structure of MoSe_(2),which may provide the reference to fabricate the highly efficient electrocatalysts for LSBs and other energy systems.
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