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Dual‐ion batteries (DIBs) have gained great attention due to their advantages of high operating voltage and low cost. However, the overall performance of the reported DIBs falls far below expectation. In particular, electrode materials with rapid‐charging kinetics and high volumetric packing densities are still in short supply. Herein, a holistic design of the DIB is proposed by using a Wadsley–Roth...
The newly emerging supercapacitor‐diode (CAPode), integrating the characteristics of a diode into an electrical‐double‐layer capacitor, can be employed to extend conventional supercapacitors to new technological applications and may play a crucial role in grid stabilization, signal propagation, and logic operations. However, the reported CAPodes have only been able to realize charge storage in the...
Dual ion batteries (DIBs) have recently attracted ever‐increasing attention owing to the potential advantages of low material cost and good environmental friendliness. However, the potential safety hazards, cost, and environmental concerns mainly resulted from the commonly used nonaqueous organic solvents severely hinder the practical application of DIBs. Herein, a hybrid aqueous/nonaqueous water‐in‐bisalt...
In this paper, a relay cooperative scheme is proposed for cellular OFDM system. In the scheme, mobile station (MS) reorganizes and recombines the bits stream, and base station (BS) combines the signals from the two independent paths, direct and relay links; at the relay, signals are redesigned. And two relay modes are provided for different scenarios. Furthermore, a supplementary strategy of sub-carriers...
This paper considers zero-forcing beamforming (ZFBF) at the transmitter for a downlink multi-user multiple-input single-output (MU-MISO) system. Transmit beamforming as a simple yet efficient technique can exploit the benefits of multiple transmit antennas provided that the instantaneous channel state information (CSI) is known at both sides of transmission link. In order to have such improvements,...
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