A High-Temperature Na-Ion Battery: Boosting the Rate Capability and Cycle Life by Structure Engineering

Yanping Zhou; Xianghua Zhang; Yanjing Liu; Xinxin Xie; Xianhong Rui; Xiong Zhang; Yuezhan Feng; Xiaojun Zhang; Yan Yu; Kama Huang

doi:10.1002/smll.201906669

A High-Temperature Na-Ion Battery: Boosting the Rate Capability and Cycle Life by Structure Engineering

Small. 2020 Feb;16(7):e1906669. doi: 10.1002/smll.201906669. Epub 2020 Jan 29.

Authors

Yanping Zhou¹, Xianghua Zhang², Yanjing Liu¹, Xinxin Xie¹, Xianhong Rui^{2

3}, Xiong Zhang⁴, Yuezhan Feng⁵, Xiaojun Zhang⁶, Yan Yu^{3

7

8}, Kama Huang¹

Affiliations

¹ Key Laboratory of Wireless Power Transmission of Ministry of Education, College of Electronics and Information Engineering, Sichuan University, Chengdu, 610065, China.
² Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China.
³ Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
⁴ School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.
⁵ Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, 450002, China.
⁶ College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241000, China.
⁷ Dalian National Laboratory for Clean Energy (DNL), Chinese Academy of Sciences (CAS), Dalian, Liaoning, 116023, China.
⁸ State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, 230026, China.

PMID: 31994345
DOI: 10.1002/smll.201906669

Abstract

High-temperature sodium ion batteries (SIBs) have drawn significant heed recently for large-scale energy storage. Yet, conventional SIBs are in the depths of inferior charge/discharge efficiency and cyclability at elevated temperatures. Rational structure design is highly desirable. Hence, a 3D hierarchical flower architecture self-assembled by carbon-coated Na₃ V₂ (PO₄ )₃ (NVP) nanosheets (NVP@C-NS-FL) is fabricated via a microwave-assisted glycerol-mediated hydrothermal reaction combined with a post heat-treatment. The growth mechanism of NVP@C-NS-FL is systematically investigated, by forming a microspherical glycerol/polyglycerol-NVP complex initially and then converting into flower-like architecture during the subsequent annealing at a low temperature ramping rate. Benefiting from the integrated structure, fast Na⁺ transportation, and highly effective heat transfer, the as-obtained NVP@C-NS-FL exhibits an excellent high-temperature SIB performance, e.g., 65 mAh g^-1 (100 C) after 1000 cycles under 60 °C. When coupled with NaTi₂ (PO₄ )₃ anode, the full cell can still display superior power capability of 1.4 kW kg^-1 and long-term cyclability (2000 cycles) under 60 °C.

Keywords: cycling stability; high-temperature performance; rate capability; sodium-ion batteries; structure engineering.

Abstract

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