Sulfur/Nitrogen-Rich Albumen Derived "Self-Doping" Graphene for Sodium Ion Storage.

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ID: 31455
2019
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Abstract
The development of sodium ion battery (SIBs) is hindered by the rapid reduction in reversible capacity of the carbon-based anode materials. The outside-in doping on carbon-based anode has been extensively explored. Whereas nickel and NiS2 particles embedded nitrogen and sulfur co-doped porous graphene can significantly improve the electrochemical performance, we report a build-in heteroatom "self-doping" on albumen derived graphene for sodium storage. The build-in sulfur and nitrogen in albumen act as the doping source during the carbonization of proteins. The S-rich proteins in the albumen can also guide the doping and nucleation of the nickel sulfide nanoparticles. Besides, the porous architecture of the carbonized proteins is achieved through the removable KCl/NaCl salts (medium) at high-temperature melting conditions. And during the carbonization process, the nitrogen can reduce the carbonization temperature of thermally stable carbon materials. In this work, the NS- grapheme delivered a specific capacity of 108.3 mAh g-1 after 800 cycles under a constant current density of 500 mA g-1, In contrast, the Ni/NiS2/NS-graphene maintained a specific capacity of 134.4 mAh g-1. Manifests the improvement of Ni/NiS2 particles to the electrochemical performance of whole composites.
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li2019sulfurnitrogenrichchemistry Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Siyuan;Li, Zeheng;Cao, Gaoyao;Ling, Min;Ji, Jiapeng;Zhao, Dian;Sha, Ying;Gao, Xuehui;Liang, Chengdu;
Journal Chemistry (Weinheim an der Bergstrasse, Germany)
Year 2019
DOI
10.1002/chem.201902575
URL
Keywords Keywords not found

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