A space-confined strategy towards stable α/β-Bi2O3 heterojunction anode for high-energy aqueous battery

Keshu Yin; Dongli Zhou; Kun Tan; Shiji Li; Mengxiao Zhao; Qiong Lu; Chunlin Teng; Xihong Lu

doi:10.1016/j.jcis.2023.08.035

A space-confined strategy towards stable α/β-Bi₂O₃ heterojunction anode for high-energy aqueous battery

J Colloid Interface Sci. 2023 Dec:651:929-937. doi: 10.1016/j.jcis.2023.08.035. Epub 2023 Aug 8.

Authors

Keshu Yin¹, Dongli Zhou², Kun Tan², Shiji Li², Mengxiao Zhao², Qiong Lu², Chunlin Teng³, Xihong Lu⁴

Affiliations

¹ MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
² Hubei Key Laboratory of Pollutant Analysis &Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, People's Republic of China.
³ Hubei Key Laboratory of Pollutant Analysis &Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, People's Republic of China. Electronic address: chlteng@hbnu.edu.cn.
⁴ MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China. Electronic address: luxh6@mail.sysu.edu.cn.

PMID: 37579667
DOI: 10.1016/j.jcis.2023.08.035

Abstract

It is very necessary to design a high-capacity and stable Bi₂O₃ anode for nickel-bismuth (Ni//Bi) batteries. In this work, a stable α- and β- phase Bi₂O₃ heterojunction nanocomposite (α/β - Bi₂O₃) was successfully prepared via a simple "space-confined" strategy and it was used as a superior anode for nickel-bismuth (Ni//Bi) battery. The α/β-Bi₂O₃ obtained by using MCM-41 as a space-confined template possesses a stable structure and enhanced charge transfer capability. Such superior traits vest the designed α/β-Bi₂O₃ electrode with high specific capacity (235 mAh g^-1 at 1 A g^-1), extraordinary rate performance (137 mAh g^-1 at 40 A g^-1, and ∼58% capacity retention vs 1 A g^-1), and excellent cyclic durability (75% capacity retention after 5000 cycles). Such performances are far superior to that of mono-phase α-Bi₂O₃ and β-Bi₂O₃ electrodes. Furthermore, an excellent Ni//Bi battery with outstanding energy density (∼155 Wh kg^-1) and long cycle life was assembled using the obtained α/β-Bi₂O₃ electrode and a NiC₂O₄ electrode as anode and cathode, respectively (NiC₂O₄//α/β-Bi₂O₃). This work opens a new alternative strategy for the rational design of efficient electrodes for reliable aqueous rechargeable batteries.

Keywords: Anode; Bi(2)O(3); Heterojunction; High-energy; Ni//Bi battery.