Highly oxygen/nitrogen doped enclosed carbon nanotubes as anode materials for advanced Li^(+)/Na^(+)/K^(+)hybrid ion batteriesOA
The utilization of hybrid ion batteries(HIBs)effectively reduces the consumption of scarce Li resources and harnesses the synergistic effect of mixed ions to achieve performance comparable to that of lithium-ion batteries.However,there is currently a lack of anode materials that possess both high safety and excellent performance for HIBs.Herein,we present a novel structure of enclosed hard carbon nanotubes(HCNTs)doped with high levels of nitrogen and oxygen as anodes for HIBs.When utilized in Li—Na—K HIBs,they exhibit superior reversible capacity(440.1 mA·h·g^(-1) at 100 mA/g)and enhanced rate performance(327.7 mA·h·g^(-1) at 1 A/g)compared to single alkali metal ion batteries.These im-provements can be attributed to the design of a one-dimensional structure that features highly doped hard carbon,which significantly enhances carrier transport.Furthermore,first-principles calculations reveal the synergistic effect of hybrid ions in nitrogen-doped hard carbon nanotubes,enhancing the ion adsorption stability in the carbon layer.This study introduces a substantial anode material for HIBs and expands the scope from binary to ternary HIB systems.
Shaoyang Dai;Xibing Wu;Dianhui Wang;Qianhui Fu;Peng Liu;Feng Wang;Daosheng Liu;Wenping Liu;Jianqiu Deng
School of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,ChinaSchool of Materials Science and Engineering,Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin,541004,China
信息技术与安全科学
Hybrid-ion batteriesAnodeHard carbon nanotubesHigh-rate performanceDoping
《Journal of Materiomics》 2026 (2)
P.115-123,9
funded by the Guangxi Key Research and Development Program(No.Gui Ke AB25069480)the Guangxi Science and Technology Major Program(No.Gui Ke AA24263059)the Natural Science Foundation of Guangxi Province(No.2024GXNSFBA010137)。
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