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Probing the electrochemical evolutions of Na–CO2 nanobatteries on Pt@NCNT cathodes using in-situ environmental TEM

  • Yuanmin Zhu (Co-first Author)
  • , Shihui Feng (Co-first Author)
  • , Peng Zhang
  • , Mohan Guo
  • , Qi Wang
  • , Duojie Wu
  • , Lei Zhang
  • , Hui Li
  • , Haijiang Wang
  • , Lang Chen
  • , Xueliang Sun
  • , Meng Gu*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Na–CO2 batteries possess many virtues including low cost, abundant sodium-containing resources, and environment-friendly nature. Understanding the electrochemical reaction processes is fundamental for battery design and performance enhancement of Na–CO2 batteries. Using in-situ environmental transmission electron microscopy in CO2 gas, we directly probed the morphology evolution and phase transformations of the charge and discharge products with single Pt atom and nitride doped carbon nanotube (Pt@NCNT) cathode in a Na–CO2 nanobattery. The discharge reaction produces Na2CO3 and carbon, which subsequently decomposed into Na ions and CO2 during charge. The discharge rate was boosted with the help of the single-atom Pt catalyst. Our work provides a fundamental insight into the governing principles on Na–CO2 battery design for better energy storage devices. © 2020 Elsevier B.V.
Original languageEnglish
Pages (from-to)88-94
JournalEnergy Storage Materials
Volume33
Online published8 Aug 2020
DOIs
Publication statusPublished - Dec 2020
Externally publishedYes

Funding

The work is supported by National Natural Science Foundation of China (No.21802065), Guangdong Innovative and Entrepreneurial Research Team Program (2016ZT06N500), Shenzhen fundamental research project (JCYJ20190809181601639), Shenzhen DRC project [2018]1433, Shenzhen Clean Energy Research Institute (No. CERI-KY-2019-003). This work used the resources of the Pico Center from SUSTech Core Research Facilities that receives support from the Presidential Fund and Development and Reform Commission of Shenzhen Municipality.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Research Keywords

  • Electrochemical evolution
  • In situ ETEM
  • Na-CO2 nanobattery
  • Single atom catalyst
  • Structure evolution

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