In-situ evolution process understanding from a salan-ligated manganese cluster to supercapacitive application  

作　　者：Xu Zhang Kai Zhao Xu Peng Mohamedally Kurmoo Ming-Hua Zeng 

机构地区：[1]Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials,Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules&College of Chemistry&Chemical Engineering,Hubei University,Wuhan 430062,China [2]Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources,School of Chemistry and Pharmaceutical Sciences,Guangxi Normal University,Guilin 541004,China [3]Institut de Chimie de Strasbourg,CNRS-UMR7177,Universite de Strasbourg,4 rue Blaise Pascal,67070 Strasbourg Cedex,France

出　　处：《Nano Research》2022年第1期346-351,共6页纳米研究（英文版）

基　　金：supported by the National Natural Science Fund for Distinguished Young Scholars(No.21525101);the National Natural Science Foundation of China(NSFC)(No.21805074);the BAGUI talent program(No.2019AC26001);the NSF of Guangxi(NSFGX,No.2017GXNSFDA198040).

摘　　要：The goal of material chemistry is to study the relationship among hierarchical structure,chemical reaction and precision preparation for materials,yet tracking pyrolysis process on multi-dimensional scale is still at primary stage.Here we propose packing mode analysis to understand evolution process in high temperature reaction.As a proof of concept,we first design a salan-ligated Mn3(Mn3(3-MeOsalophen)_(2)(Cl)_(2))cluster and pyrolyze it under an inert atmosphere directly to a mixed valence MnOx embedded in a porous N-doped carbon skeleton(MnOx/C).Meanwhile,combining thermogravimetry-mass spectrometry(TG-MS)with other characterization techniques,its pyrolysis process is precisely tracked real-time and Mn^(2+)/Mn^(3+)ratios in the resulting materials are deduced,ensuring excellent electrochemical advantages.As a result,the as-preferred MnOVC-900 sample reaches 943 F/g at 1 A/g,maintaining good durability under 5,000 cycles with 90%retention.The highlight of packing mode analysis strategy in this work would provide a favorable approach to explore the potential relationship between structure and performance in the future.

关 键 词：evolution process understanding thermogravimetry-mass spectrometry salan-ligated manganese cluster packing mode analysis supercapacitive performance 

分 类 号：O64[理学—物理化学]