journal article·2022-07-04

Hierarchically Constructed ZnO/Co3O4 Nanoheterostructures Synergizing Dendrite Inhibition and Polysulfide Conversion in Lithium–Sulfur Battery

Kaiping Zhu, Jianmei Chen, Can Guo, Hao Wang, Hongpeng Li, Pan Xue, Jong-Min Lee

ACS Materials Letters· Volume 4· Issue 7
Publisher page

Abstract

The efficiency and stability of lithium–sulfur (Li–S) batteries remain limited due to the slow redox kinetics, uncontrollable polysulfide shuttling, and irreversible lithium dendrite growth. Herein, we report a bifunctional composite of heterostructured ZnO/Co3O4 nanocrystals on a 3D hierarchical reduced graphene oxide/carbon nanotubes skeleton (ZCNC@GC). The strong polarity of ZCNC benefits the polysulfides adsorption and uniform Li deposition, inhibiting the polysulfides shuttling, and Li dendrite growth. Meanwhile, the micro/nano interface field effect combined with the overall network conductive skeleton establishes a smooth and hierarchical conductive pathway, facilitating the charge transfer, thus accelerating the reaction kinetics. As a result, the full battery affords a rate performance of 652 mAh g–1 at 5 C and a capacity decay of only 0.034% per cycle at 5 C over 500 cycles, surpassing most Li–S batteries. This work provides a perspective on the interface engineering of electrode materials for fabricating built-in electric fields to promote the Li–S battery system.
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Research context

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

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Affiliations

National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

School of Chemistry, South China Normal University, Guangzhou 510006, China

Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China

School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China

School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore

Funding

Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Key Research and Development Program of Xuzhou

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