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journal article·2023-06Open access

Double‐Walled NiTeSe–NiSe2 Nanotubes Anode for Stable and High‐Rate Sodium‐Ion Batteries

Han Wu, Ke Wang, Mengjun Li, Yutao Wang, Zhu Zhu, JialeLiang, Zhuzhu Du, Wei Ai, Song He, Ruilong Yuan, Binwu Wang, Pan He, Jinsong Wu

Small· Volume 19· Issue 22
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Abstract

Abstract Electrodes made of composites with heterogeneous structure hold great potential for boosting ionic and charge transfer and accelerating electrochemical reaction kinetics. Herein, hierarchical and porous double‐walled NiTeSe–NiSe2 nanotubes are synthesized by a hydrothermal process assisted in situ selenization. Impressively, the nanotubes have abundant pores and multiple active sites, which shorten the ion diffusion length, decrease Na+ diffusion barriers, and increase the capacitance contribution ratio of the material at a high rate. Consequently, the anode shows a satisfactory initial capacity (582.5 mA h g−1 at 0.5 A g−1), a high‐rate capability, and long cycling stability (1400 cycles, 398.6 mAh g−1 at 10 A g−1, 90.5% capacity retention). Moreover, the sodiation process of NiTeSe–NiSe2 double‐walled nanotubes and underlying mechanism of the enhanced performance are revealed by in situ and ex situ transmission electron microscopy and theoretical calculations.
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Research context

Energy storageNanomaterialsComposites

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

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

Affiliations

Frontiers Science Center for Flexible Electronics (FSCFE) Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 P. R. China

Key laboratory of Flexible Electronics of Zhejiang Province Ningbo institute of Northwestern Polytechnical University 218 Qingyi Road Ningbo 315103 P. R. China

Nanostructure Research Center State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 P. R. China

College of Materials Science and Engineering Xi'an University of Architecture and Technology 13 Yanta Road Xi'an 710055 P. R. China

Funding

Natural Science Foundation of Ningbo · National Natural Science Foundation of China

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