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Highly Reversible Zinc Metal Anode in a Dilute Aqueous Electrolyte Enabled by a pH Buffer Additive.
Zhang, Wei; Dai, Yuhang; Chen, Ruwei; Xu, Zhenming; Li, Jianwei; Zong, Wei; Li, Huangxu; Li, Zheng; Zhang, Zhenyu; Zhu, Jiexin; Guo, Fei; Gao, Xuan; Du, Zijuan; Chen, Jintao; Wang, Tianlei; He, Guanjie; Parkin, Ivan P.
Afiliação
  • Zhang W; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Dai Y; Electrochemical Innovation Lab (EIL), Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Chen R; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Xu Z; Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China.
  • Li J; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Zong W; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Li H; Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China.
  • Li Z; School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
  • Zhang Z; Electrochemical Innovation Lab (EIL), Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Zhu J; Electrochemical Innovation Lab (EIL), Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Guo F; Electrochemical Innovation Lab (EIL), Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Gao X; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Du Z; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Chen J; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Wang T; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • He G; Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
  • Parkin IP; Electrochemical Innovation Lab (EIL), Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
Angew Chem Int Ed Engl ; 62(5): e202212695, 2023 Jan 26.
Article em En | MEDLINE | ID: mdl-36375075
ABSTRACT
Aqueous zinc-ion batteries have drawn increasing attention due to the intrinsic safety, cost-effectiveness and high energy density. However, parasitic reactions and non-uniform dendrite growth on the Zn anode side impede their application. Herein, a multifunctional additive, ammonium dihydrogen phosphate (NHP), is introduced to regulate uniform zinc deposition and to suppress side reactions. The results show that the NH4 + tends to be preferably absorbed on the Zn surface to form a "shielding effect" and blocks the direct contact of water with Zn. Moreover, NH4 + and (H2 PO4 )- jointly maintain pH values of the electrode-electrolyte interface. Consequently, the NHP additive enables highly reversible Zn plating/stripping behaviors in Zn//Zn and Zn//Cu cells. Furthermore, the electrochemical performances of Zn//MnO2 full cells and Zn//active carbon (AC) capacitors are improved. This work provides an efficient and general strategy for modifying Zn plating/stripping behaviors and suppressing side reactions in mild aqueous electrolyte.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article