ORCID Profile
0000-0001-8667-1929
Current Organisations
University of Cape Town
,
Hong Kong University of Science and Technology
,
American Chemical Society
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Publisher: Elsevier BV
Date: 12-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA05298A
Abstract: A scalable scaffold made of carbon nanofibers modified with embedded ZnO nanoparticles as facile nucleation sites for stable plating and stripping of Na is developed, leading to much ameliorated cyclic stability at high current densities.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TA11913B
Abstract: A dual-phase MoS 2 with expanded interlayer distance is fabricated for sodium storage. The dual-phase MoS 2 shows significantly improved electrical conductivity and enhanced Na + diffusivity compared to the common 2H-MoS 2 .
Publisher: Elsevier BV
Date: 06-2008
Publisher: Springer Science and Business Media LLC
Date: 09-2022
Publisher: Elsevier BV
Date: 11-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR07106C
Abstract: Lithium–oxygen batteries (LOBs) possess the highest theoretical specific density among all types of lithium batteries, making them ideal candidates to replace the current Li ion batteries for next-generation electric vehicle applications.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA02925H
Abstract: Atomically dispersed Co–Fe dual sites on nitrogen doped microporous carbon are constructed for ORR with superior performance, while XAS, differential PDF dPDF and DFT studies reveal the relationship between the catalytic performance and the local chemical environment.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR03942A
Abstract: Ternary metal sulfides and ternary metal oxides have received much attention as potential electrodes for high performance rechargeable batteries.
Publisher: American Chemical Society (ACS)
Date: 09-2021
Publisher: American Chemical Society (ACS)
Date: 11-12-2017
Publisher: Elsevier BV
Date: 02-2012
Publisher: Wiley
Date: 04-08-2021
Abstract: Reversible protonic ceramic cells (RePCCs) can facilitate the global transition to renewable energy sources by providing high efficiency, scalable, and fuel‐flexible energy generation and storage at the grid level. However, RePCC technology is limited by the lack of durable air electrode materials with high activity toward the oxygen reduction/evolution reaction and water formation/water‐splitting reaction. Herein, a novel nanocomposites concept for developing bifunctional RePCC electrodes with exceptional performance is reported. By harnessing the unique functionalities of nanoscale particles, nanocomposites can produce electrodes that simultaneously optimize reaction activity in both fuel cell/electrolysis operations. In this work, a nanocomposite electrode composed of tetragonal and Ruddlesden–Popper (RP) perovskite phases with a surface enriched by CeO 2 and NiO nanoparticles is synthesized. Experiments and calculations identify that the RP phase promotes hydration and proton transfer, while NiO and CeO 2 nanoparticles facilitate O 2 surface exchange and O 2‐ transfer from the surface to the major perovskite. This composite also ensures fast (H + /O 2‐ /e ‐ ) triple‐conduction, thereby promoting oxygen reduction/evolution reaction activities. The as‐fabricated RePCC achieves an excellent peak power density of 531 mW cm ‐2 and an electrolysis current of −364 mA cm ‐2 at 1.3 V at 600 °C, while demonstrating exceptional reversible operation stability of 120 h at 550 °C.
Publisher: Wiley
Date: 23-01-2022
DOI: 10.1002/INF2.12288
Abstract: Rechargeable sodium metal batteries (SMBs) have emerged as promising alternatives to commercial Li‐ion batteries because of the natural abundance and low cost of sodium resources. However, the overuse of metallic sodium in conventional SMBs limits their energy densities and leads to severe safety concerns. Herein, we propose a sodium‐free‐anode SMB (SFA‐SMB) configuration consisting of a sodium‐rich Na superionic conductor‐structured cathode and a bare Al/C current collector to address the above challenges. Sodiated Na 3 V 2 (PO 4 ) 3 in the form of Na 5 V 2 (PO 4 ) 3 was investigated as a cathode to provide a stable and controllable sodium source in the SFA‐SMB. It provides not only remarkable Coulombic efficiencies of Na plating/stripping cycles but also a highly reversible three‐electron redox reaction within 1.0–3.8 V versus Na/Na + confirmed by structural/electrochemical measurements. Consequently, an ultrahigh energy density of 400 Wh kg −1 was achieved for the SFA‐SMB with fast Na storage kinetics and impressive capacity retention of 93% after 130 cycles. A narrowed voltage window (3.0–3.8 V vs. Na/Na + ) further increased the lifespan to over 300 cycles with a high retained specific energy of 320 Wh kg −1 . Therefore, the proposed SFA‐SMB configuration opens a new avenue for fabricating next‐generation batteries with high energy densities and long lifetimes. image
No related grants have been discovered for Jiapeng Liu.