水溶液
双功能
电化学
电池(电)
化学
纳米片
材料科学
固碳
阴极
锌
无机化学
化学工程
电极
催化作用
纳米技术
有机化学
二氧化碳
物理化学
冶金
功率(物理)
工程类
物理
量子力学
作者
Jiafang Xie,Xueyuan Wang,Jiangquan Lv,Yiyin Huang,Maoxiang Wu,Yaobing Wang,Jiannian Yao
标识
DOI:10.1002/anie.201811853
摘要
As a promising technique for CO2 fixation/utilization and energy conversion/storage, the metal-CO2 battery has been studied to improve its interconversion between CO2 and carbonates/oxalates. Herein, we propose and realize a reversible aqueous Zn-CO2 battery based on the reversible conversion between CO2 and liquid HCOOH on a bifunctional Pd cathode. The 3D porous Pd interconnected nanosheet with enriched edge and pore structure, has a highly electrochemical active surface to facilitate simultaneous selective CO2 reduction and HCOOH oxidation at low overpotentials. The resulting battery has a 1 V charge voltage, a cycling durability over 100 cycles, and a high energy efficiency of 81.2 %. The battery mechanism is proposed as Zn+CO2 +2 H+ +2 OH- ↔ ZnO+HCOOH+H2 O, through which the reversible conversion between CO2 and liquid HCOOH was realized.
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