当前位置：
X-MOL 学术
›
ACS Appl. Mater. Interfaces
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Phase Engineering of Molybdenum Carbide–Cobalt Heterostructures for Long-Lasting Zn-Air Batteries
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-08-25 , DOI: 10.1021/acsami.3c06711
Wenxian Liu 1 , Xiaojing Dai 1 , Wei Guo 1 , Jiawei Tang 1 , Jinxiu Feng 1 , Dong Zheng 1 , Ruilian Yin 2 , Yuxi Wang 1 , Wenbin Que 1 , Fangfang Wu 1 , Wenhui Shi 3 , Xiehong Cao 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-08-25 , DOI: 10.1021/acsami.3c06711
Wenxian Liu 1 , Xiaojing Dai 1 , Wei Guo 1 , Jiawei Tang 1 , Jinxiu Feng 1 , Dong Zheng 1 , Ruilian Yin 2 , Yuxi Wang 1 , Wenbin Que 1 , Fangfang Wu 1 , Wenhui Shi 3 , Xiehong Cao 1
Affiliation
|
Developing highly active and robust oxygen catalysts is of great significance for the commercialization of Zn-air batteries (ZABs) with long-life stability. Herein, heterostructured catalysts comprising molybdenum carbide and metallic Co are prepared by a simple dicyandiamide-assisted pyrolysis strategy. Importantly, the crystalline phase of molybdenum carbide in the catalysts can be carefully regulated by adjusting the CoMo-imidazole precursor and dicyandiamide ratio. The electronic configuration of Co and Mo centers as well as the phase-dependent oxygen reduction reaction performance of these heterostructures (β-Mo2C/Co, β-Mo2C/η-MoC/Co, and η-MoC/Co) was disclosed. A highly active η-MoC/Co cathode enables ZABs with outstanding long-term stability over 850 h with a low voltage decaying rate of 0.06 mV·h–1 and high peak power density of 162 mW·cm–2. This work provides a new idea for the rational design of efficient and stable cathode catalysts for ZABs.
中文翻译：
用于长效锌空气电池的碳化钼-钴异质结构的相工程
开发高活性、强健的氧催化剂对于长寿命稳定性的锌空气电池（ZAB）的商业化具有重要意义。在此，通过简单的双氰胺辅助热解策略制备包含碳化钼和金属Co的异质结构催化剂。重要的是，催化剂中碳化钼的晶相可以通过调整CoMo-咪唑前体和双氰胺的比例来仔细调节。Co和Mo中心的电子构型以及这些异质结构（β-Mo 2 C/Co、β-Mo 2 C/η-MoC/Co和η-MoC/Co）的相依赖性氧还原反应性能被披露。高活性的η-MoC/Co阴极使ZAB在850小时内具有出色的长期稳定性，具有0.06 mV·h –1 的低电压衰减率和162 mW·cm –2的高峰值功率密度。该工作为合理设计高效稳定的ZAB阴极催化剂提供了新思路。
更新日期：2023-08-25
中文翻译：
用于长效锌空气电池的碳化钼-钴异质结构的相工程
开发高活性、强健的氧催化剂对于长寿命稳定性的锌空气电池（ZAB）的商业化具有重要意义。在此，通过简单的双氰胺辅助热解策略制备包含碳化钼和金属Co的异质结构催化剂。重要的是，催化剂中碳化钼的晶相可以通过调整CoMo-咪唑前体和双氰胺的比例来仔细调节。Co和Mo中心的电子构型以及这些异质结构（β-Mo 2 C/Co、β-Mo 2 C/η-MoC/Co和η-MoC/Co）的相依赖性氧还原反应性能被披露。高活性的η-MoC/Co阴极使ZAB在850小时内具有出色的长期稳定性，具有0.06 mV·h –1 的低电压衰减率和162 mW·cm –2的高峰值功率密度。该工作为合理设计高效稳定的ZAB阴极催化剂提供了新思路。
京公网安备 11010802027423号