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Multi-scale physics of bipolar membranes in electrochemical processes

Journal Article · · Nature Chemical Engineering
 [1];  [2];  [3];  [4];  [5];  [2];  [6];  [6];  [5];  [1];  [2]
  1. University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  3. Stanford Univ., CA (United States)
  4. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States)
  5. Univ. of Oregon, Eugene, OR (United States)
  6. Stanford Univ., CA (United States). SUNCAT Center for Interface Science and Catalysis

Bipolar membranes (BPMs) enable control of ion concentrations and fluxes in electrochemical cells suitable for a wide range of applications. Here, in this work, we present the multi-scale physics of BPMs in an electrochemical engineering context and articulate design principles to drive the development of advanced BPMs. The chemistry, structure, and physics of BPMs are illustrated and related to the thermodynamics, transport phenomena, and chemical kinetics that dictate ion and species fluxes and selectivity. These interactions give rise to emergent structure–property–performance relationships that yield design criteria for BPMs that achieve high permselectivity, durability, and voltaic efficiency. The resulting performance trade-offs for BPMs are presented in the context of emerging applications in energy conversion or storage, and environmental remediation. By connecting the fundamental physical phenomena in BPMs to device-level performance and engineering, we aim to facilitate the development of next-generation BPMs for sustainable electrochemical processes.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; SC0021266
OSTI ID:
2544239
Journal Information:
Nature Chemical Engineering, Journal Name: Nature Chemical Engineering Journal Issue: 1 Vol. 1; ISSN 2948-1198
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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