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Monolithic electrode integrated of ultrathin NiFeP on 3D strutted graphene for bifunctionally efficient overall water splitting

Journal Article


Abstract


  • High-performance earth-abundant electrocatalysts for oxygen and hydrogen evolutions are highly desired for renewable energy but remain challenging. Herein, we have developed ultrathin NiFeP nanosheets, and merged the NiFeP with a 3D support of sponge-like strutted graphenes (SG). The synthesized NiFeP/SG, a porous monolith, shows efficient electrocatalytic activities for oxygen and hydrogen evolutions in alkaline electrolyte with low overpotentials of 218 and 115 mV, respectively. Using NiFeP/SG as direct catalytic electrodes, the overall water splitting requires a low cell voltage of 1.54 V to achieve a current of 10 mA cm −2 . The high performances result from the shifted-up d states caused by iron incorporation, the ultrathin NiFeP, and the 3D network structure of SG. Additionally, NiFeP/SG demonstrates excellent gravimetric catalytic activities, meaningful to aerospace and portables. The material opens the way to a universal robust lightweight catalytic electrode for a variety of applications in electrochemical energy storage and conversion.

Authors


  •   Li, Rui (external author)
  •   Wang, Bao-Lu (external author)
  •   Gao, Tian (external author)
  •   Zhang, Ran (external author)
  •   Xu, Chenyang (external author)
  •   Jiang, Xiangfen (external author)
  •   Zeng, Jinjue (external author)
  •   Bando, Yoshio
  •   Hu, Pengfei (external author)
  •   Li, Yongle (external author)
  •   Wang, Xue (external author)

Publication Date


  • 2019

Citation


  • Li, R., Wang, B., Gao, T., Zhang, R., Xu, C., Jiang, X., Zeng, J., Bando, Y., Hu, P., Li, Y. & Wang, X. (2019). Monolithic electrode integrated of ultrathin NiFeP on 3D strutted graphene for bifunctionally efficient overall water splitting. Nano Energy, 58 870-876.

Scopus Eid


  • 2-s2.0-85061447260

Number Of Pages


  • 6

Start Page


  • 870

End Page


  • 876

Volume


  • 58

Place Of Publication


  • Netherlands

Abstract


  • High-performance earth-abundant electrocatalysts for oxygen and hydrogen evolutions are highly desired for renewable energy but remain challenging. Herein, we have developed ultrathin NiFeP nanosheets, and merged the NiFeP with a 3D support of sponge-like strutted graphenes (SG). The synthesized NiFeP/SG, a porous monolith, shows efficient electrocatalytic activities for oxygen and hydrogen evolutions in alkaline electrolyte with low overpotentials of 218 and 115 mV, respectively. Using NiFeP/SG as direct catalytic electrodes, the overall water splitting requires a low cell voltage of 1.54 V to achieve a current of 10 mA cm −2 . The high performances result from the shifted-up d states caused by iron incorporation, the ultrathin NiFeP, and the 3D network structure of SG. Additionally, NiFeP/SG demonstrates excellent gravimetric catalytic activities, meaningful to aerospace and portables. The material opens the way to a universal robust lightweight catalytic electrode for a variety of applications in electrochemical energy storage and conversion.

Authors


  •   Li, Rui (external author)
  •   Wang, Bao-Lu (external author)
  •   Gao, Tian (external author)
  •   Zhang, Ran (external author)
  •   Xu, Chenyang (external author)
  •   Jiang, Xiangfen (external author)
  •   Zeng, Jinjue (external author)
  •   Bando, Yoshio
  •   Hu, Pengfei (external author)
  •   Li, Yongle (external author)
  •   Wang, Xue (external author)

Publication Date


  • 2019

Citation


  • Li, R., Wang, B., Gao, T., Zhang, R., Xu, C., Jiang, X., Zeng, J., Bando, Y., Hu, P., Li, Y. & Wang, X. (2019). Monolithic electrode integrated of ultrathin NiFeP on 3D strutted graphene for bifunctionally efficient overall water splitting. Nano Energy, 58 870-876.

Scopus Eid


  • 2-s2.0-85061447260

Number Of Pages


  • 6

Start Page


  • 870

End Page


  • 876

Volume


  • 58

Place Of Publication


  • Netherlands