journal article·2019-09-11

Encapsulating MnSe Nanoparticles Inside 3D Hierarchical Carbon Frameworks with Lithium Storage Boosted by in Situ Electrochemical Phase Transformation

Tao Yang, Jianwen Liu, Manshu Zhang, Dexin Yang, Jianhui Zheng, Zhijin Ju, Jianlin Cheng, Jinyang Zhuang, Yangai Liu, Jiasong Zhong, Hao Liu, Guoxiu Wang, Rongkun Zheng, Zaiping Guo

ACS Applied Materials & Interfaces· Volume 11· Issue 36
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Abstract

Electrode materials that act through the electrochemical conversion mechanism, such as metal selenides, have been considered as promising anode candidates for lithium-ion batteries (LIBs), although their fast capacity attenuation and inadequate electrical conductivity are impeding their practical application. In this work, these issues are addressed through the efficient fabrication of MnSe nanoparticles inside porous carbon hierarchical architectures for evaluation as anode materials for LIBs. Density functional theory simulations indicate that there is a completely irreversible phase transformation during the initial cycle, and the high structural reversibility of β-MnSe provides a low energy barrier for the diffusion of lithium ions. Electron localization function calculations demonstrate that the phase transformation leads to high charge transfer kinetics and a favorable lithium ion diffusion coefficient. Benefitting from the phase transformation and unique structural engineering, the MnSe/C chestnut-like structures with boosted conductivity deliver enhanced lithium storage performance (885 mA h g–1 at a current density of 0.2 A g–1 after 200 cycles), superior cycling stability (a capacity of 880 mA h g–1 at 1 A g–1 after 1000 cycles), and outstanding rate performance (416 mA h g–1 at 2 A g–1).
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Research context

OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310036, People’s Republic of China

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials & Ministry of Educational Key Laboratory for the Synthesis and Application of Organic Functional, Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, People’s Republic of China

School of Physics, The University of Sydney, Camperdown, New South Wales 2006, Australia

Institute for Superconducting & Electronic Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia

School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, People’s Republic of China

College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China

School of Chemistry and Forensic Science, University of Technology Sydney, Sydney, New South Wales 2007, Australia

Funding

Ministry of Education of the People's Republic of China · China Postdoctoral Science Foundation · Australian Research Council · China Scholarship Council · National Natural Science Foundation of China

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