A facile ice-templating-induced puzzle coupled with carbonization strategy for kilogram-level production of porous carbon nanosheets as high-capacity anode for lithium-ion batteries  

作　　者：Baolin Xing Feng Shi Zhanzhan Jin Huihui Zeng Xiaoxiao Qu Guangxu Huang Chuanxiang Zhang Yunkai Xu Zhengfei Chen Jun Lu 

机构地区：[1]Henan Key Laboratory of Coal Green Conversion,College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo,China [2]State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization,Jiaozuo,China [3]School of Biological and Chemical Engineering,NingboTech University,Ningbo,China [4]College of Chemical and Biological Engineering,Zhejiang University,Hangzhou,China

出　　处：《Carbon Energy》2024年第12期164-179,共16页碳能源(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:52274261,52074109,52304284;Natural Science Foundation of Henan Province,Grant/Award Number:222300420167;Research Fund of Henan Key Laboratory of Coal Green Conversion,Grant/Award Number:CGCF202201;Program for Science&Technology Innovation Talents in Universities of Henan Province,Grant/Award Number:21HASTIT008;Key Scientific Research Project in Colleges and Universities of Henan Province,Grant/Award Numbers:22A430022,24A440003;Scientific and Technological Project of Henan Province,Grant/Award Number:212102310564;Natural Science Fund from Ningbo Municipal Bureau of Science and Technology,Grant/Award Number:2023J040。

摘　　要：Two-dimensional porous carbon nanosheets(PCNSs)are considered promising anodes for lithium-ion batteries due to their synergetic features arising from both graphene and porous structures.Herein,using naturally abundant and biocompatible sodium humate(SH)as the precursor,PCNSs are prepared from the laboratory scale up to the kilogram scale by a method of a facile ice-templating-induced puzzle coupled with a carbonization strategy.Such obtained SH-derived PCNSs(SH-PCNSs)possess a hierarchical porous structure dominated by mesopores having a specific surface area(~127.192 g^(−1)),pore volume(~0.134 cm3 g^(−1)),sheet-like morphology(~2.18nm in thickness),and nitrogen/oxygen-containing functional groups.Owing to these merits,the SH-PCNSs present impressive Li-ion storage characteristics,including high reversible capacity(1011mAh g^(−1) at 0.1 A g^(−1)),excellent rate capability(465mAh g^(−1) at 5 A g^(−1)),and superior cycle stability(76.8%capacitance retention after 1000 cycles at 5 A g^(−1)).It is noted that the SH-PCNSs prepared from the kilogram-scale production procedure possess comparable electrochemical properties.Furthermore,coupling with a LiNi1/3Co1/3Mn1/3O2 cathode,the full cells deliver a high capacity of 167mAh g^(−1) at 0.2A g^(−1) and exhibit an outstanding energy density of 128.8Whkg^(−1),highlighting the practicability of this porous carbon nanosheets and the potential commercial opportunity of the scalable processing approach.

关 键 词：anode materials ice-templating-induced puzzle lithium-ion batteries porous carbon nanosheets sodium humate 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]