TY  - JOUR
AB  - © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Lithium ion capacitors are new energy storage devices combining the complementary features of both electric double-layer capacitors and lithium ion batteries. A key limitation to this technology is the kinetic imbalance between the Faradaic insertion electrode and capacitive electrode. Here, we demonstrate that the Li3VO4 with low Li-ion insertion voltage and fast kinetics can be favorably used for lithium ion capacitors. N-doped carbon-encapsulated Li3VO4 nanowires are synthesized through a morphology-inheritance route, displaying a low insertion voltage between 0.2 and 1.0 V, a high reversible capacity of ?400 mAh g?1 at 0.1 A g?1, excellent rate capability, and long-term cycling stability. Benefiting from the small nanoparticles, low energy diffusion barrier and highly localized charge-transfer, the Li3VO4/N-doped carbon nanowires exhibit a high-rate pseudocapacitive behavior. A lithium ion capacitor device based on these Li3VO4/N-doped carbon nanowires delivers a high energy density of 136.4 Wh kg?1 at a power density of 532 W kg?1, revealing the potential for application in high-performance and long life energy storage devices.
AU  - Shen, L
AU  - Lv, H
AU  - Chen, S
AU  - Kopold, P
AU  - van Aken, PA
AU  - Wu, X
AU  - Maier, J
AU  - Yu, Y
DA  - 2017/07/19
DO  - 10.1002/adma.201700142
JO  - Advanced Materials
PY  - 2017/07/19
TI  - Peapod-like Li<inf>3</inf>VO<inf>4</inf>/N-Doped Carbon Nanowires with Pseudocapacitive Properties as Advanced Materials for High-Energy Lithium-Ion Capacitors
VL  - 29
Y1  - 2017/07/19
Y2  - 2026/07/04
ER  -