Pei Liu

Intrinsic Planar Defects Govern Durability in Single-Crystal Ni-Rich Cathodes

Tao Huang, Hehe Zhang, Pei Liu, Lianfeng Zou et autres

Abstract Single-crystal Ni-rich layered oxides are promising cathodes for high energy-density lithium-ion batteries, yet their electrochemical stability remains unexpectedly difficult to reconcile with the anticipated benefits of a grain-boundary-free architecture. Here, we reveal intrinsic planar defects as a hidden structural origin of …

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Enhancing learning of spiking neural networks with lifetime-tunable optical neuron devices

Chiunghan Yeh, Shaotian Zhang, Chen Lu, Pei Liu et autres

Abstract Temporal heterogeneity is a defining feature of biological neural systems, where neurons with distinct membrane time constants support complementary information-processing functions. However, most hardware spiking neural networks (SNNs) still rely on artificial neurons with fixed membrane dynamics, limiting the ability to …

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Inter-Layer Edge Placement Error Measurement via Backscattered Electron Imaging for Process Window Improvement

Pei Liu, Yuyang Bian, Yu Zhang, Biqiu Liu et autres

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Scalable synthesis of graphitic aggregates for high-rate battery anode

Jiangtao Hu, Pei Liu, Shenghua Ye, Chao Peng et autres

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Enhanced Ferroelectricity in Hafnium-Based Films Grown on Silicon Substrate

Pei Liu, Z K Li, Ruihong Ruan, Xingcan Guo et autres

We explore the effect of hafnium-based thin film thickness on the ferroelectric characteristics. The 8-nm hafnium-based ferroelectric thin films show larger remanent polarization (2P ${}_{\mathbf {r}} \gt 40\mu $ C/cm ${}^{\mathbf {2}}$ ). Meanwhile, experimental results demonstrate that the HAO device can …

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A Dual-Layer Broadband Metasurface Absorber Design via Few Sample Learning with Efficient Data Acquisition

Q. B. Wang, Qiyuan Wang, Haoran Zu, Pei Liu et autres

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Advancements in cathode materials for dual-ion batteries

Zhiqin Sun, Honglei Jiang, Pei Liu, Ting Jin et autres

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Multidimensional carbon architecture empowering Na4Fe3(PO4)2P2O7 cathode: An ultra-stable sodium-ion battery design enduring 10,000 cycles

Shuai Yin, Jing Chen, Pei Liu, Zhiqiang Li et autres

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Toward Anode‐Free Sodium Metal Batteries: Engineering Metal Utilization from Excess to Zero

Pei Liu, Ting Jin, Lifang Jiao

Abstract Sodium metal batteries (SMBs) with limited metal content or anode‑free configurations hold significant potential to mitigate safety risks associated with active sodium (Na) metal, while delivering high energy density and reducing environmental impact. Nevertheless, the absence of a sustained Na supply …

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Toward Anode‐Free Sodium Metal Batteries: Engineering Metal Utilization from Excess to Zero

Pei Liu, Ting Jin, Lifang Jiao

Sodium metal batteries (SMBs) with limited metal content or anode‑free configurations hold significant potential to mitigate safety risks associated with active sodium (Na) metal, while delivering high energy density and reducing environmental impact. Nevertheless, the absence of a sustained Na supply readily …

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Fast‐Charging and Long‐Cycle Sodium‐Ion Batteries Enabled by an Ultra‐Stable Carbon Anode

Honglei Jiang, Pei Liu, Ting Jin, Qing‐Lun Wang et autres

Abstract The realization of rapid‐charging sodium‐ion batteries (SIBs) with exceptional power density represents a pivotal challenge for next‐generation electric vehicles. Currently, carbonaceous anodes are considered the most technologically mature yet rate‐limited candidate approaching commercialization. To address the bottlenecks of slow ion transport …

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BEOL-Compatible Annealing-Free HfxZr1-xO2 Ferroelectric Device and Investigation of Cycle-Dependent Evolution Mechanisms

Yongkai Liu, Yifan Song, Ruihong Yuan, Pei Liu et autres

This work focuses on the performance optimization and cycle-dependent evolution mechanisms of low-temperature anneal-free hafnium-based ferroelectric devices. By modulating oxygen plasma power, effective synthesis of ferroelectric o-phase was achieved at processing temperatures$\le$280∘C without the need for additional annealing process, compatible with CMOS …

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