新型炭材料（中英文）2025，Vol.40Issue(1)：188-199,12.DOI:10.1016/S1872-5805(25)60944-9
铁镍双金属修饰的氮掺杂多孔炭纳米片构筑超高稳定性锂硫电池
Ultra-stable lithium-sulfur batteries using nitrogen-doped porous car-bon nanosheets implanted with both Fe and Ni
摘要
Abstract
The major problem with lithium-sulfur(Li-S)batteries is their poor cycling stability because of slow redox kinetics in the cathode and the growth of lithium dendrites on the anode.We report the production of 2D porous carbon nanosheets doped with both Fe and Ni(Fe/Ni-N-PCNSs)by an easy and template-free approach that solve this problem.Because of their ultrathin porous 2D structure and uniform distribution of Fe and Ni dopants,they capture polysulfides,speed up the sulfur redox reaction,and improve the material's lithiophilicity,greatly suppressing the shuttling of polysulfides and dendrite growth on the lithium anode.As a result,it has an exceptional performance as a stable host for elemental sulfur and metallic lithium,producing a record long life of 1000 cycles with a very small capacity decay of 0.00025％per cycle in a Li-S battery and an excellent cycling stability of over 850 h with a small overpotential of＞72 mV in a lithium metal battery.This work suggests the use of multifunctional-based 2D porous carbon nanosheets as a stable host for both elemental sulfur and metallic lithium to improve the Li-S battery per-formance.关键词
多孔炭/二维纳米片/锂金属电池/锂硫电池/氧化还原动力学Key words
Li-S battery/Porous carbon/Lithium metal battery/Nanosheets/Redox kinetics分类
化学化工引用本文复制引用
Reddeppa Nadimicherla,唐友臣,卢宇恒,刘如亮..铁镍双金属修饰的氮掺杂多孔炭纳米片构筑超高稳定性锂硫电池[J].新型炭材料（中英文）,2025,40(1):188-199,12.基金项目
This work was supported by Basic and Applied Basic Research Fund Project of Guangdong(2022A1515011817,2023A1515030160),and Re-search and Innovation Group of Guangdong Uni-versity of Education(2024KYCXTD014). 广东省自然科学基金(2022A1515011817,2023A1515030160). （2022A1515011817,2023A1515030160）
