电催化剂
分解水
析氧
材料科学
双功能
非阻塞I/O
异质结
电化学
化学工程
碳纳米纤维
纳米技术
催化作用
电极
光电子学
化学
碳纳米管
物理化学
光催化
有机化学
工程类
作者
Subramani Surendran,Sebastian Cyril Jesudass,Gnanaprakasam Janani,Joon‐Young Kim,Yoongu Lim,Jihyun Park,Mi‐Kyung Han,In Sun Cho,Uk Sim
标识
DOI:10.1002/admt.202200572
摘要
Abstract Electrochemical water splitting is the eco‐friendly route to generate green hydrogen, which is recognized as sustainable energy for the future. However, the cost, operational efficiency, and long‐term durability of the electrochemical water splitting rely on the choice of the electrocatalysts. Hence, developing a superior design strategy is an important criterion to establish an efficient and sustainable water splitting system. Herein, a sulphur‐rich CoNiO heterostructure encapsulated on N‐rich carbon nanofibers (SCNO@N‐CNF) synthesized via a simple and efficient electrospinning technique is reported. The three‐way redox active centers, viz., the electron redistributed active Co δ ‐ NiO δ + interfaces, S‐dopant sites with modified electronic density, and the porous N‐CNF matrix, makes the prepared electrocatalyst more efficient toward oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The SCNO@N‐CNF electrocatalyst exhibits a low OER and HER overpotentials (η OER = 247 mV; η HER = 169 mV) at a current density of 10 mA cm −2 . Moreover, SCNO@N‐CNF was analyzed as the bifunctional electrocatalyst in overall electrochemical water splitting, and it is found to deliver 10 mA cm −2 at only 1.58 V. Thus, the design and engineering of multiple active elements in a single electrocatalyst is anticipated as an effective approach to establish an efficient and sustainable water splitting system.
科研通智能强力驱动
Strongly Powered by AbleSci AI