Biomass-derived hierarchical N, P codoped porous 3D-carbon framework@TiO2 hybrids as advanced anode for lithium ion batteries

Junkai Zhao; Daina Wei; Xiaobao Zhang; Shiguo Zhang; Ce Zhang; Xiaojing Yang

doi:10.1016/j.jcis.2021.08.005

Biomass-derived hierarchical N, P codoped porous 3D-carbon framework@TiO₂ hybrids as advanced anode for lithium ion batteries

J Colloid Interface Sci. 2022 Jan 15;606(Pt 1):577-587. doi: 10.1016/j.jcis.2021.08.005. Epub 2021 Aug 5.

Authors

Junkai Zhao¹, Daina Wei¹, Xiaobao Zhang¹, Shiguo Zhang², Ce Zhang³, Xiaojing Yang⁴

Affiliations

¹ Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China; Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 100094, PR China.
² Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China.
³ Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 100094, PR China. Electronic address: zhangce@qxslab.cn.
⁴ Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, PR China. Electronic address: yang.xiaojing@bnu.edu.cn.

PMID: 34416452
DOI: 10.1016/j.jcis.2021.08.005

Abstract

Advanced anode materials with high theoretical capacity and rate capability are urgently required for next generation lithium ion batteries (LIBs). In this study, hierarchical N, P codoped porous 3D-carbon framework@TiO₂ nanoparticle hybrid (N, PC@TiO₂) is synthesized by using pollen as biomass precursor through a facile template assisted sol-gel methode and exhibits hierarchical porous hollow structure with plenty of redox active sites and enhanced specific surface area. Compared with N, P codoped porous micro-carbon sphere framework and TiO₂ porous hollow microspheres anodes, the N, PC@TiO₂ anode shows superior reversible capacity of 687.3 mAh g^-1 at 0.1 A g^-1 after 200 cycles and 440.5 mAh g^-1 after 1000 cycles at 1 A g^-1. The excellent performance can be attributed to the rational hierarchical porous hollow structure and the synergetic contributions from the N, P codoped-carbon and TiO₂ components, which enhance Li⁺ storage capability, accelerate the reaction kinetics and stabilize the electrode structure and interface during charge/discharge process. This study suggests a practical strategy to prepare novel anode material with abundant natural resource and facile synthetic route, and the optimized hybrid anode with outstanding Li⁺ storage properties provides hopeful application prospect in advanced LIBs and other energy storage devices.

Keywords: Biomass; Hierarchical porous structure; Hybrid anode; Lithium-ion batteries; N P co-doped carbon.