Flower-like Cu₂SnS₃ Nanostructure Materials with High Crystallinity for Sodium Storage

Lin Fu; Zhen Bi; Benben Wei; Lanyan Huang; Xuzi Zhang; Zhihong Chen; Hua Liao; Ming Li; Chaoqun Shang; Xin Wang

doi:10.3390/nano8070475

Flower-like Cu₂SnS₃ Nanostructure Materials with High Crystallinity for Sodium Storage

Nanomaterials (Basel). 2018 Jun 28;8(7):475. doi: 10.3390/nano8070475.

Authors

Lin Fu^{1

2}, Zhen Bi³, Benben Wei⁴, Lanyan Huang⁵, Xuzi Zhang⁶, Zhihong Chen^{7

8}, Hua Liao⁹, Ming Li¹⁰, Chaoqun Shang¹¹, Xin Wang^{12

13}

Affiliations

¹ International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526060, China. fulin.work@foxmail.com.
² National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. fulin.work@foxmail.com.
³ National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. zhen.bi@ecs-scnu.org.
⁴ National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. benben.wei@ecs-scnu.org.
⁵ National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. lanyan.huang@zq-scnu.org.
⁶ National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. xuzi.zhang@ecs-scnu.or.
⁷ International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526060, China. chenzhihong1227@sina.com.
⁸ Shenyang Institute of automation, Chinese Academy of Sciences, Guangzhou 511458, China. chenzhihong1227@sina.com.
⁹ Institute of Solar Energy, Yunnan Normal University, Kunming 650500, China. liaohua8@ynnu.edu.cn.
¹⁰ Institute of Solar Energy, Yunnan Normal University, Kunming 650500, China. lmllldy@126.com.
¹¹ National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. chaoqun.shang@ecs-scnu.org.
¹² International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526060, China. wangxin@scnu.edu.cn.
¹³ National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China. wangxin@scnu.edu.cn.

Abstract

In this study, ternary Cu₂SnS₃ (CTS) nanostructure materials with high crystallinity were successfully prepared via a facile solvothermal method, which was followed by high-temperature treatment. The morphology of the as-synthesized samples is uniform flower-like spheres, with these spheres consisting of hierarchical nanosheets and possessing network features. Sodium storage measurements demonstrate that the annealed CTS electrodes have high initial reversible capacity (447.7 mAh·g^−1 at a current density of 100 mA·g^−1), good capacity retention (200.6 mAh·g^−1 after 50 cycles at a current density of 100 mA·g^−1) and considerable rate capability because of their high crystallinity and unique morphology. Such good performances indicate that the high crystallinity CTS is a promising anode material for sodium ion batteries.

Keywords: Cu2SnS3; anode material; high crystallinity; sodium ion batteries.