DataVXACS Applied Energy MaterialsPaper
journal article·2021-04-26

Ferromagnetic 1D-Fe3O4@C Microrods Boost Polysulfide Anchoring for Lithium–Sulfur Batteries

Yingchong Huang, Zeheng Li, Tuyuan Zhu, Xuehui Gao, Xiuqing Lv, Min Ling, Zhengwei Wan, Yongyao Xia

ACS Applied Energy Materials· Volume 4· Issue 4
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Source abstract

Abstract

A lithium–sulfur (Li–S) battery has become a promising energy storage device because of its remarkable excellent specific capacity density and energy density. However, low sulfur utilization and sharp decay of Coulombic efficiency caused by the “shuttle effect” are still gaps that cannot be filled in the long-term development of Li–S batteries. To break through these bottlenecks, we report a ferromagnetic one-dimensional porous Fe3O4@C (1D-Fe3O4@C) electrode as a sulfur host. Benefitting from its one-dimensional (1D) structure, coated carbon shell, and excellent magnetic properties, the as-prepared electrode, besides enhanced conductivity, has a strong binding effect on polysulfides through the Lorentz force and physical adsorption, thereby reducing the “shuttle effect”. At the same time, the porous morphology is conducive to sulfur loading and accommodates the huge volume changes during cycling. The 1D-Fe3O4@C/S electrode shows excellent specific capacity and superior high-rate cyclability, which is demonstrated by capacity retention rates of 95.1 and 92.7% for 200 cycles at 1 and 2 C, respectively.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced battery technologies research

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

Affiliations

Department of Chemistry, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China

College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

College of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, P. R. China

Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, China

Funding

Natural Science Foundation of Zhejiang Province · Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University · Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University

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