TY - JOUR
T1 - Integration of Zn-Ag and Zn-Air Batteries
T2 - A Hybrid Battery with the Advantages of Both
AU - Tan, Peng
AU - Chen, Bin
AU - Xu, Haoran
AU - Cai, Weizi
AU - He, Wei
AU - Zhang, Houcheng
AU - Liu, Meilin
AU - Shao, Zongping
AU - Ni, Meng
PY - 2018/10/31
Y1 - 2018/10/31
N2 - We report a hybrid battery that integrates a Zn-Ag battery and a Zn-air battery to utilize the unique advantages of both battery systems. In the positive electrode, Ag nanoparticles couple the discharge behaviors through the two distinct electrochemical systems by working as the active reactant and the effective catalyst in the Zn-Ag and Zn-air reactions, respectively. In the negative electrode, in situ grown Zn particles provide large surface areas and suppress the dendrite, enabling the long-term operating safety. The battery first exhibits two-step voltage plateaus of 1.85 and 1.53 V in the Zn-Ag reaction, after which a voltage plateau of 1.25 V is delivered in the Zn-air reaction, and the specific capacity reaches 800 mAh gZn -1. In addition, excellent reversibility and stability with maintaining high energy efficiency of 68% and a capacity retention of nearly 100% at 10 mA cm-2 are demonstrated through 100 cycles, outperforming both conventional Zn-air and Zn-Ag batteries. This work brings forth a conceptually novel high-performance battery, and more generally opens up new vistas for developing hybrid electrochemical systems by integrating the advantages from two distinct ones.
AB - We report a hybrid battery that integrates a Zn-Ag battery and a Zn-air battery to utilize the unique advantages of both battery systems. In the positive electrode, Ag nanoparticles couple the discharge behaviors through the two distinct electrochemical systems by working as the active reactant and the effective catalyst in the Zn-Ag and Zn-air reactions, respectively. In the negative electrode, in situ grown Zn particles provide large surface areas and suppress the dendrite, enabling the long-term operating safety. The battery first exhibits two-step voltage plateaus of 1.85 and 1.53 V in the Zn-Ag reaction, after which a voltage plateau of 1.25 V is delivered in the Zn-air reaction, and the specific capacity reaches 800 mAh gZn -1. In addition, excellent reversibility and stability with maintaining high energy efficiency of 68% and a capacity retention of nearly 100% at 10 mA cm-2 are demonstrated through 100 cycles, outperforming both conventional Zn-air and Zn-Ag batteries. This work brings forth a conceptually novel high-performance battery, and more generally opens up new vistas for developing hybrid electrochemical systems by integrating the advantages from two distinct ones.
KW - cycling stability
KW - energy efficiency
KW - hybrid system
KW - Zn-Ag battery
KW - Zn-air battery
UR - http://www.scopus.com/inward/record.url?scp=85055150058&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b10778
DO - 10.1021/acsami.8b10778
M3 - Journal article
C2 - 30284815
AN - SCOPUS:85055150058
SN - 1944-8244
VL - 10
SP - 36873
EP - 36881
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 43
ER -
