首页|From longan peel waste to energy storage:Porous activated carbon as a cathode matrix for advanced Li/Na-selenium batteries

From longan peel waste to energy storage:Porous activated carbon as a cathode matrix for advanced Li/Na-selenium batteries

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This paper explores the potential of Longan peel waste(LPw)as a sustainable and cost-effective matrix for selenium-based cathodes in Li-Se and Na-Se batteries.Following activation,we created LP2—a designation for the carbon precursor derived from LPw,activated at a 1:2 ratio of carbonized LPw to KOH.This nomenclature,where'LP'stands for'Longan peel'and'2 reflects the optimization of this ratio,led to a hierarchical porous structure with an average pore size of 3.0307 nm and a significant BET surface area of 111.9386 m2 g-1.Selenium was incorporated into the LP2 matrix using a simple melt diffusion technique,yielding the composite Se@LP2.In Li-Se batteries,Se@LP2 exhibited an initial discharge capacity of 1033.75 mAh g-1 at 0.1C.At a 1C rate,the composite demonstrated a capacity retention of 301.14 mAh g-1 after 550 cycles and 380.91 mAh g-1 after 100 cycles.Moreover,for Na-Se batteries,the composite showcased a capacity retention of 347.18 mAh g-1 after 100 cycles at 0.1C.These findings underscore LP2's potential as a viable and efficient matrix for selenium-based cathodes,revealing promising prospects for the advancement of highly efficient Li-Se and Na-Se batteries.

Longan peel wasteSelenium-based cathodeHierarchical porous structureMelt diffusion techniqueLi/Na-Se batteries

Mustafa Khan、Suxia Yan、Mujahid Ali、Faisal Mahmood、Yang Zheng、Xiaohui Song、Guochun Li、Junfeng Liu、Yong Wang

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Institute for Energy Research,Jiangsu University,Zhenjiang,Jiangsu,212013,PR China

School of Energy and Power Engineering,Jiangsu University,Zhenjiang,Jiangsu,212013,PR China

School of Materials Science and Engineering,Hefei University of Technology,Anhui,230009,PR China

Jiangsu Distinguished Professors Projectfunding for Scientific Research Startup of Jiangsu Universityfunding for Scientific Research Startup of Jiangsu UniversityJiangsu Provincial Program for High-Level Innovative and Entrepreneurial Talents IntroductionNational Natural Science Foundation of ChinaChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationOpen Project of Luzhou Key Laboratory of Fine Chemical Application Technology

1711510024411151001519JDG044220080912020M6730382020M711381HYJH-2101-B

2024

10.1016/j.pnsc.2024.03.004

自然科学进展·国际材料(英文)
国家自然科学基金委员会

自然科学进展·国际材料(英文)

影响因子：0.25
ISSN：1002-0071
年,卷(期)：2024.34(2)
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