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Hierarchical Ti3C2Tx MXene/Carbon Nanotubes for Low Overpotential and Long-Life Li-CO2 Batteries
ACS Nano ( IF 15.8 ) Pub Date : 2021-05-12 , DOI: 10.1021/acsnano.0c10558 Zhe Hu 1, 2 , Yaoyi Xie 1 , Deshuang Yu 1 , Qiannan Liu 2 , Limin Zhou 3 , Kai Zhang 3 , Peng Li 1 , Feng Hu 1 , Linlin Li 1 , Shulei Chou 2 , Shengjie Peng 1
ACS Nano ( IF 15.8 ) Pub Date : 2021-05-12 , DOI: 10.1021/acsnano.0c10558 Zhe Hu 1, 2 , Yaoyi Xie 1 , Deshuang Yu 1 , Qiannan Liu 2 , Limin Zhou 3 , Kai Zhang 3 , Peng Li 1 , Feng Hu 1 , Linlin Li 1 , Shulei Chou 2 , Shengjie Peng 1
Affiliation
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Electrochemical carbon dioxide conversion at ambient temperature is an efficient route to synchronously provide a continuous power supply and produce useful chemicals such as carbonates. Rigid catalysts with rational morphological and structural design are used to overcome the sluggish reaction kinetics and contribute to a better cycle life in Li-CO2 batteries. In this report, a two-dimensional Ti3C2Tx MXene/carbon heterostructure assembled parallel-aligned tubular architecture was delicately synthesized through a self-sacrificial templating method and delivered an ultralow overpotential of 1.38 V at 0.2 A·g–1. The heterostructure that inherited the high catalytic performance of Ti3C2Tx MXene and the outstanding stability of carbon material promoted the adsorption of CO2 and accelerated the decomposition of lithium carbonate, which was proved by in situ and ex situ characterizations and density functional theory calculations. The tubular architecture with large surface area was demonstrated to provide a high durability for long cycle life and ensure good contacts among gas, electrolyte, and electrode.
中文翻译：
Ti 3 C 2 T x MXene /碳纳米管分层结构，用于低电位和长寿命的Li-CO 2电池
在环境温度下进行电化学二氧化碳转化是同步提供连续电源并生产有用的化学品（例如碳酸盐）的有效途径。具有合理的形态和结构设计的刚性催化剂用于克服反应迟缓的反应动力学，并有助于延长Li-CO 2电池的循环寿命。在此报告中，通过自牺牲模板法精细合成了二维Ti 3 C 2 T x MXene /碳杂化结构平行排列的管状结构，并在0.2 A·g –1的条件下提供了1.38 V的超低超电势。继承了Ti 3的高催化性能的异质结构C 2 T x MXene和出色的碳材料稳定性促进了CO 2的吸附并加速了碳酸锂的分解，这通过原位和非原位表征以及密度泛函理论计算得到了证明。已证明具有大表面积的管状结构可提供较高的耐用性，以延长循环寿命，并确保气体，电解质和电极之间的良好接触。
更新日期：2021-05-25
中文翻译：
Ti 3 C 2 T x MXene /碳纳米管分层结构，用于低电位和长寿命的Li-CO 2电池
在环境温度下进行电化学二氧化碳转化是同步提供连续电源并生产有用的化学品（例如碳酸盐）的有效途径。具有合理的形态和结构设计的刚性催化剂用于克服反应迟缓的反应动力学，并有助于延长Li-CO 2电池的循环寿命。在此报告中，通过自牺牲模板法精细合成了二维Ti 3 C 2 T x MXene /碳杂化结构平行排列的管状结构，并在0.2 A·g –1的条件下提供了1.38 V的超低超电势。继承了Ti 3的高催化性能的异质结构C 2 T x MXene和出色的碳材料稳定性促进了CO 2的吸附并加速了碳酸锂的分解，这通过原位和非原位表征以及密度泛函理论计算得到了证明。已证明具有大表面积的管状结构可提供较高的耐用性，以延长循环寿命，并确保气体，电解质和电极之间的良好接触。
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