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Updated: Jan 26, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
Engineering high reversibility and fast kinetics of Bi nanoflakes by surface modulation for ultrastable
Yinxiang Zeng1, Mengying Wang1, Wanyi He1
1MOE of the 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 , China . Email: luxh6@mail.sysu.edu.cn ;
Abstract:
The exploration of a stable and high-rate anode is of pivotal importance for achieving advanced aqueous rechargeable batteries. Owing to the beneficial properties of high conductivity, suitable negative working voltage, and three-electron redox, bismuth (Bi) is considered as a promising anode material, but it suffers from poor stability. Here, we successfully endow Bi nanoflakes (NFs) with prominent cycling performance by a one-step surface oxidation approach to remarkably boost its reversibility. As a result, the partially oxidized Bi NFs (BiO ) show an admirable capacity (0.38 mA h cm-2 at 2 mA cm-2), good rate capability and superior long-term stability (almost no capacity decay after 20 000 cycles). Furthermore, a durable aqueous Ni//Bi battery is constructed based on the optimized BiO anode, which exhibits excellent durability with 96% capacity retention after 5000 cycles. This study could open a new avenue for the rational design of efficient anodes for eco-friendly and reliable aqueous rechargeable batteries.
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