J. Mater. Sci. Technol. ›› 2022, Vol. 131: 60-67.DOI: 10.1016/j.jmst.2022.05.024

• Research Article • Previous Articles     Next Articles

Promoting ion adsorption and desolvation kinetics enables high capacity and rate capability of stibium anode for advanced alkaline battery

Peng Zhanga, Jinhao Xieb, Fan Yangb, Xin Shib,*(), Yanxia Yub, Xihong Lub,c,*()   

  1. aCollege of Materials Science and Engineering, Guangdong Provincial Engineering Technology Research Center of Key Material for High Performance Copper Clad Laminate, Dongguan Cleaner Production Center, Dongguan University of Technology, Dongguan 523808, China
    bMOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
    cSchool of Applied Physics and Materials, Wuyi University, Jiangmen 529020, China
  • Received:2022-04-05 Revised:2022-05-05 Accepted:2022-05-15 Published:2022-06-08 Online:2022-06-08
  • Contact: Xin Shi,Xihong Lu
  • About author:luxh6@mail.sysu.edu.cn (X. Lu)
    *MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China. E-mail addresses: shix27@mail2.sysu.edu.cn (X. Shi),

Abstract:

Stibium (Sb) metal with high theoretic capacity, suitable negative working window and inexpensive nature are promising anode material for advanced aqueous alkaline batteries (AABs). However, the further development of Sb anode is severely hindered by the low capacity and poor rate capability which is originated from deficient adsorption of [Sb(OH)4] and its sluggish desolvation kinetics. Herein, a nitrogen doped carbon cages (NCCs) substrate is constructed as high capacity and rate capability anode by promoting the adsorption and following desolvation process of [Sb(OH)4] via the enhanced attraction toward (OH) in the solvated [Sb(OH)4]. Consequently, the designed Sb/NCCs anode delivers a high capacity of 627 mAh g−1 with an average 95% Sb utilization, an outstanding coulombic efficiency (CE) of 95% and an impressive lifespan (>110 h). Meanwhile, the Ni3Se2//Sb/NCCs batteries show great capacity retention of 86.7% after 2000 cycles with an areal capacity of 0.52 mAh cm−2. Implementation of the designed anode allows for the construction of Sb-based AABs with enhanced rate capability, energy density and cycling performance.

Key words: Aqueous alkaline batteries, Stibium anode, N-doped carbon, Ion adsorption, Desolvation kinetics