DataVXACS Energy LettersPaper
journal article·2025-12-12

Octahedral Microdistortion for Aqueous Ammonium-Ion Batteries

Zhongzhuo Yang, Yu Ding, Zhenjun Song, Yuanhao Shen, Chenyang Yang, Wei Peng, Weixiao Wang, Wenchao Shi, Shijie Feng, Lin Xu

ACS Energy Letters· Volume 10· Issue 12
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Source abstract

Abstract

Ammonium-ion battery (AIB) is an emerging energy storage system, owing to its inherent safety and low cost. However, the large size of NH 4 + and its strong interaction with the host lattice lead to severe stress accumulation and undesirable structural evolution. Here, we introduce Al 3+ into vanadium oxide to modulate the occupancy of the V t 2g orbital, thereby achieving a local chemical coordination manipulation. The electronic adjustment breaks the lattice symmetry and induces a VO 6 octahedral distortion. This microdistortion acts as a built-in stress buffer that suppresses lattice breathing and accelerates electron transport. As a result, the AlVO electrode delivers 112 mAh g –1 at 2 A g –1, retains 91% of its capacity over 10000 cycles. The pouch cell also delivers a durable cycling stability, further confirming the feasibility of this strategy. These findings clarify the relationship between local distortion and electrochemical performance, providing a rational route to optimize electrodes through precise regulation of coordination environments.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advanced battery technologies research · Advancements in Battery Materials · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering

Wuhan University of Technology

Engineering Research Center of Recycling and Comprehensive Utilization of Pharmaceutical and Chemical Waste of Zhejiang Province, School of Pharmaceutical and Chemical Engineering

Taizhou University

Henan Key Laboratory of High Efficiency Energy Conversion Science and Technology, Henan International Joint Laboratory of New Energy Materials and Devices, School of Physics and Electronics

Henan University

Hainan Institute

Hubei Longzhong Laboratory

Wuhan University of Technology (Xiangyang Demonstration Zone)

Zhongyu Feima New Material Technology Innovation Center (Zhengzhou) Co., Ltd.

Funding

National Key Research and Development Program of China · Department of Science and Technology of Hubei Province · National Natural Science Foundation of China · Hubei Longzhong Laboratory, Wuhan University of Technology

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